研究等業績 - 原著論文 - 藤原 憲秀
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Total synthesis of selaginellin A
K. Fujiwara, T. Itagaki, T. Tokiwano
Tetrahedron Letters ( Tetrahedron Letters ) 79 153295 2021年08月 [査読有り]
研究論文(学術雑誌) 国内共著
The total synthesis of selaginellin A, isolated from Selaginella tamariscina, was achieved through an eight-step process including a Diels-Alder reaction, formation of a quinone methide moiety and dehydrogenative aromatization. The NMR spectra collected for different samples of synthetic selaginellin A initially showed irregular peak shapes and variable chemical shifts for the signals of the phenol-substituted quinone methide moiety under neutral conditions. After detailed NMR analysis, it was found that the addition of a trace amount of trifluoroacetic acid accelerated the tautomerism of the phenol-substituted quinone methide moiety and improved the reproducibility of the chemical shifts of synthetic selaginellin A.
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Y. Aki, Y. Katsumata, H. Kakihara, K. Nonaka, K. Fujiwara
PLoS ONE ( PLoS ONE ) 16 ( 4 April 2021 ) e0250416 2021年04月 [査読有り]
研究論文(学術雑誌) 国内共著
There is a continuous demand to improve monoclonal antibody production for medication supply and medical cost reduction. For over 20 years, recombinant Chinese hamster ovary cells have been used as a host in monoclonal antibody production due to robustness, high productivity and ability to produce proteins with ideal glycans. Chemical compounds, such as dimethyl sulfoxide, lithium chloride, and butyric acid, have been shown to improve monoclonal antibody production in mammalian cell cultures. In this study, we aimed to discover new chemical compounds that can improve cell-specific antibody production in recombinant Chinese hamster ovary cells. Out of the 23,227 chemicals screened in this study, 4-(2,5-dimethyl-1H-pyrrol-1-yl)-N-(2,5-dioxopyrrolidin-1-yl) benzamide was found to increase monoclonal antibody production. The compound suppressed cell growth and increased both cell-specific glucose uptake rate and the amount of intracellular adenosine triphosphate during monoclonal antibody production. In addition, the compound also suppressed the galactosylation on a monoclonal antibody, which is a critical quality attribute of therapeutic monoclonal antibodies. Therefore, the compound might also be used to control the level of the galactosylation for the N-linked glycans. Further, the structure-activity relationship study revealed that 2,5-dimethylpyrrole was the most effective partial structure of 4-(2,5-dimethyl-1H-pyrrol-1-yl)-N-(2,5-dioxopyrrolidin-1-yl) benzamide on monoclonal antibody production. Further structural optimization of 2,5-dimethylpyrrole derivatives could lead to improved production and quality control of monoclonal antibodies.
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Total synthesis of selaginellin S
Kenshu Fujiwara, Takaya Itagaki, Yoshihiko Kondo, Uichi Akiba, Tetsuo Tokiwano
Tetrahedron Letters ( Tetrahedron Letters ) 61 ( 25 ) 152031 2020年06月 [査読有り]
研究論文(学術雑誌) 国内共著
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An Approach to a 2-Hydroxy-3-phenyldibenzofuran Skeleton Based on Rh(PPh3)3Cl-Catalyzed [2+2+2] Cycloaddition Between a 1-Ethynyl-2-(Ethynyloxy)benzene and an (Alkoxyethynyl)benzene
Daisuke Sato, Kenshu Fujiwara, Yoshihiko Kondo, Uichi Akiba, Tetsuo Tokiwano
HETEROCYCLES 101 ( 2 ) 417 - 422 2020年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Molecular Wires with Controllable π‐Delocalization Incorporating Redox‐Triggered π‐Conjugated Switching Units.
Wataru Nojo, Hitomi Tamaoki, Yusuke Ishigaki, Ryo Katoono, Kenshu Fujiwara, Takanori Fukushima, Takanori Suzuki
ChemPlusChem 84 ( 6 ) 634 - 642 2019年07月 [査読有り]
研究論文(学術雑誌) 国内共著
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Total synthesis of kehokorins A and B.
Kenshu Fujiwara, Ryosuke Motousu, Daisuke Sato, Yoshihiko Kondo, Uichi Akiba, Takanori Suzuki, Tetsuo Tokiwano
Tetrahedron Letters 60 1299 - 1301 2019年03月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the cyclohexene segment of portimine.
Takafumi Saito, Kenshu Fujiwara, Yoshihiko Kondo, Uichi Akiba, Takanori Suzuki
Tetrahedron Letters 60 386 - 389 2019年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Transmission of Point Chirality to Axial Chirality for Strong Circular Dichroism in Triarylmethylium- o,o -Dimers.
Yusuke Ishigaki, Tomohiro Iwai, Yuki Hayashi, Aiichiro Nagaki, Ryo Katoono, Kenshu Fujiwara, Jun-ichi Yoshida, Takanori Suzuki
Synlett 29 ( 16 ) 2147 - 2154 2018年06月 [査読有り]
研究論文(学術雑誌) 国内共著
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Enhanced Circular Dichroism at Elevated Temperatures through Complexation-Induced Transformation of a Three-Layer Cyclophane with Dualistic Dynamic Helicity.
Ryo Katoono, Yudai Obara, Kenshu Fujiwara, Takanori Suzuki
Chemical Science 9 2222 - 2229 2018年04月 [査読有り]
研究論文(学術雑誌) 国内共著
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Supramolecular chiroptical switching of helical-sense preferences through the two-way intramolecular transmission of a single chiral source
R. Katoono, K. Kusaka, Y. Tanaka, K. Fujiwara, T. Suzuki
Organic & Biomolecular Chemistry 16 ( 7 ) 1167 - 1171 2018年03月 [査読有り]
研究論文(学術雑誌) 国内共著
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An improved synthesis of the C42-C52 segment of ciguatoxin 3C.
T. Saito, K. Fujiwara, Y. Sano, T. Sato, Y. Kondo, U. Akiba, Y. Ishigaki, R. Katoono, T. Suzuki
Tetrahedron Letters 59 ( 14 ) 1372 - 1376 2018年03月 [査読有り]
研究論文(学術雑誌) 国内共著
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Double bond formation based on nitroaldol reaction and radical elimination: a prototype segment connection method for the total synthesis of nigricanoside A dimethyl ester.
T. Tsunoda, K. Fujiwara, S. Okamoto, Y. Kondo, U. Akiba, Y. Ishigaki, R. Katoono, T. Suzuki
Tetrahedron Letters 59 ( 19 ) 1846 - 1850 2018年03月 [査読有り]
研究論文(学術雑誌) 国内共著
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Oxidative desulfurization of electron-donating 5,5,7,7-tetraaryl-5,7-dihydrodibenzo[c,e] thiepins and the related heterocycles: Generation of dicationic dyes upon two-electron oxidation.
T. Suzuki, T. Kuroda, H. Tamaoki, S, Higasa, T. Nehira, R. Katoono, Y. Ishigaki, K. Fujiwara, T. Fukushima, H. Yamada
Heterocycles 95 ( 2 ) 816 - 829 2017年11月 [査読有り]
研究論文(学術雑誌) 国内共著
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High selectivity and extractability of palladium from chloride leach liquors of an automotive catalyst residue by azothiacalix(4)arene derivative.
K. Senthil, U. Akiba, K. Fujiwara, F. Hamada, Y. Kondo
Hydrometallurgy 169 478 - 487 2017年10月 [査読有り]
研究論文(学術雑誌) 国内共著
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Highly Selective Separation and Recovery of Pd(II) from the Automotive Catalyst Residue with the Thiocarbamoyl substituted Azothiacalix[4]arene Derivative
K. Senthil, U. Akiba, K. Fujiwara, Y. Kondo
Separation Science and Technology (Philadelphia) 52 ( 8 ) 1365 - 1376 2017年02月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the ABCDEF-ring of ciguatoxin 3C
T. Sato, K. Fujiwara, K. Nogoshi, A. Goto, D. Domon, N. Kawamura, Y. Nomura, D. Sato, H. Tanaka, A. Murai, Y. Kondo, U. Akiba, R. Katoono, H. Kawai, T. Suzuki
Tetrahedron 73 ( 6 ) 703 - 726 2017年02月 [査読有り]
研究論文(学術雑誌) 国内共著
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Bis(diarylethenyl)-thiophenes, -bithiophenes, and -terthiophenes: a new series of electrochromic systems that exhibit a fluorescence response
Y. Ishigaki, H. Kawai, R. Katoono, K. Fujiwara, H. Higuchi, H. Kikuchi, T. Suzuki
Canadian Journal of Chemistry 95 ( 3 ) 243 - 252 2017年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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New Heterocyclic Dithioether Ligands for Highly Selective Separation and Recovery of Pd(II) from Acidic Leach Liquors of Spent Automobile Catalyst
K. Senthil, U. Akiba, K. Fujiwara, F. Hamada, Y. Kondo
Industrial and Engineering Chemistry Research 56 ( 4 ) 1036 - 1047 2017年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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食用きのこから単離したp-ターフェニル化合物の生理作用
乗鞍敏夫, 藤原憲秀, 松江一, 岩井邦久
FFI Journal 221 ( 3 ) 232 - 238 2016年08月 [査読有り]
研究論文(学術雑誌) 国内共著
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Redox-induced Conformational Changes in 1,3-Propylene- and m-Xylylenebis[5-(10-butyl-5,10-dihydrobenzo[a]indolo[2,3-c]carbazole)]: Twin-BIC Donors that Form Sandwich-like Dimeric Cations Exhibiting NIR Absorption
T. Suzuki, W. Nojo, Y. Sakano, R. Katoono, Y. Ishigaki, H. Ohno, K. Fujiwara
Chem. Lett. 45 ( 7 ) 720 - 722 2016年07月 [査読有り]
研究論文(学術雑誌) 国内共著
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Axially chiral dynamic redox system with a perfluorobiphenyl skeleton: Assembly to the optically pure dumbbell- or tripod-type electron donors undergoing facile 4e- and 6e-transfer
H. Tamaoki, R. Katoono, K. Fujiwara, T. Suzuki
Angew. Chem. Int. Ed. 55 ( 7 ) 2582 - 2586 2016年02月 [査読有り]
研究論文(学術雑誌) 国内共著
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Two-way chromic interconversion of the 2,2'-biphenol-6,6'-diyl dication with 5H,10H-dioxapyrene or 9H,10H-4,5-dihydroxyphenanthrene
Y. Sakano, R. Katoono, K. Fujiwara, T. Suzuki
Chem. Commun. 51 ( 76 ) 14303 - 14305 2015年10月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of Ganbajunins-D and -E and the Proposed Structure of Thelephantin-D
K. Fujiwara, K. Kushibe, T. Sato, T. Norikura, H. Matsue, K. Iwai, R. Katoono, T. Suzuki
Eur. J. Org. Chem. 2015 ( 26 ) 5798 - 5809 2015年09月 [査読有り]
研究論文(学術雑誌) 国内共著
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Controllability of dynamic double helices: quantitative analysis of the inversion of a screw-sense preference upon complexation
R. Katoono, S. Kawai, K. Fujiwara, T. Suzuki
Chem. Sci. 6 ( 11 ) 6592 - 6600 2015年08月 [査読有り]
研究論文(学術雑誌) 国内共著
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Dynamic Figure Eight Chirality: Multifarious Inversions of a Helical Preference Induced by Complexation
R. Katoono, Y. Tanaka, K. Kusaka, K. Fujiwara, T. Suzuki
J. Org. Chem. 80 ( 15 ) 7613 - 7625 2015年08月 [査読有り]
研究論文(学術雑誌) 国内共著
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Reversible Interconversion between 11,11,12,12-Tetraaryl-1,4-diaza/-1,4,5,8-tetraazaanthraquinodimethanes and Their Cationic Species: Electrochromic and Halochromic Responses
T. Suzuki, Y. Umezawa, Y. Sakano, H. Tamaoki, R. Katoono, K. Fujiwara
Chem. Lett. 44 ( 7 ) 905 - 907 2015年07月 [査読有り]
研究論文(学術雑誌) 国内共著
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New Insights into the Hexaphenylethane Riddle: Formation of an α,o-Dimer
Y. Uchimura, T. Takeda, R. Katoono, K. Fujiwara, T. Suzuki
Angew. Chem. Int. Ed. 54 ( 13 ) 4010 - 4013 2015年03月 [査読有り]
研究論文(学術雑誌) 国内共著
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Bis(10-methylacridinium)s as a versatile platform for redox active functionalized dyes and novel structures
T. Suzuki, T. Takeda, E. Ohta, K. Wada, R. Katoono, H. Kawai, K. Fujiwara
Chem. Rec. 15 ( 1 ) 280 - 294 2015年02月 [査読有り]
研究論文(学術雑誌) 国内共著
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Stereoselective Synthesis of the A-Ring of Armatol A from a Bromo-Substituted Chiral Building Block Based on Ireland-Claisen Rearrangement and Ring-Closing Olefin Metathesis
Y. Hirose, K. Fujiwara, Takafumi Saito, R. Katoono, T. Suzuki
Heterocycles 91 ( 1 ) 76 - 106 2015年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Bis(diarylethenyl)thiophene, -bithiophene, and -terthiophene: A New Series of Violene-Cyanine Hybrid-Type Electron Donors
Y. Ishigaki, H. Kawai, R. Katoono, K. Fujiwara, T. Suzuki
Heterocycles 90 ( 1 ) 136 - 143 2015年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Three-Way Output Molecular Response System based on Tetrakis(3,4-dialkoxyphenyl)-3,4-dihydro[5]helicenes: Perturbation of Properties by Long Alkyl Chains
Y. Ishigaki, S. Yoshida, H. Kawai, R. Katoono, K. Fujiwara, T. Fukushima, T. Suzuki
Heterocycles 90 ( 1 ) 126 - 135 2015年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Wurster's Blue-type Cation Radicals Framed in a 5,10-Dihydrobenzo[a]indolo[2,3-c]carbazole (BIC) Skeleton: Dual Electrochromism with Drastic Changes in UV/Vis/NIR and Fluorescence.
Suzuki, Takanori; Sakano, Yuto; Tokimizu, Yusuke; Miura, Youhei; Katoono, Ryo; Fujiwara, Kenshu; Yoshioka, Naoki; Fujii, Nobutaka; Ohno, Hiroaki.
Chem. Asian J. 9 1841 - 1846 2014年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Complexation-induced inversion of helicity by an organic guest in a dynamic molecular propeller based on a tristerephthalamide host with a two-layer structure.
Katoono, Ryo; Fujiwara, Kenshu; Suzuki, Takanori.
Chem. Commun. 50 5438 - 5440 2014年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Preparation and structure of acenaphthylene-1,2-diyldi(9-acridine) derivatives with a long C=C bond.
Takeda, Takashi; Uchimura, Yasuto; Kawai, Hidetoshi; Katoono, Ryo; Fujiwara, Kenshu; Suzuki, Takanori.
Chem. Commun. 50 3924 - 3927 2014年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Total Synthesis of Pectenotoxin-2.
Fujiwara, Kenshu; Suzuki, Yuki; Koseki, Nao; Aki, Yu-ichi; Kikuchi, Yuta; Murata, Shun-ichi; Yamamoto, Fuyuki; Kawamura, Mariko; Norikura, Toshio; Matsue, Hajime; Murai, Akio; Katoono, Ryo; Kawai, Hidetoshi; Suzuki, Takanori.
Angew. Chem. Int. Ed. 53 780 - 784 2014年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Expandability of ultralong C-C bonds: largely different C1-C2 bond lengths determined by low-temperature X-ray structural analyses on pseudopolymorphs of 1,1-bis(4-fluorophenyl)-2,2-bis(4-methoxyphenyl)pyracene.
Suzuki, Takanori; Uchimura, Yasuto; Nagasawa, Fumika; Takeda, Takashi; Kawai, Hidetoshi; Katoono, Ryo; Fujiwara, Kenshu; Murakoshi, Kei; Fukushima, Takanori; Nagaki, Aiichiro; Yoshida, Jun-ichi.
Chem. Lett. 43 86 - 88 2014年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Chiral memory units based on dynamic redox systems with a dibenzoxepinone skeleton: drastic change in racemization barrier and electrochemical bistability.
Wada, Kazuhisa; Chiba, Yuna; Takeda, Takashi; Kawai, Hidetoshi; Katoono, Ryo; Fujiwara, Kenshu; Suzuki, Takanori.
Heterocycles 88 945 - 952 2014年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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A new variant of fused cyclic ether synthesis based on Ireland-Claisen rearrangement and RCM.
Domon, Daisuke; Fujiwara, Kenshu; Kawamura, Natsumi; Katoono, Ryo; Kawai, Hidetoshi; Suzuki, Takanori.
Nat. Prod. Commun. 8 929 - 934 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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A stereoselective method for the construction of the C8'-O-C6'' ether of nigricanoside-A: synthesis of simple models for the C20 lipid chain/galactosyl glycerol segment.
Kinashi, Naoto; Fujiwara, Kenshu; Tsunoda, Takayuki; Katoono, Ryo; Kawai, Hidetoshi; Suzuki, Takanori.
Tetrahedron Lett. 54 4564 - 4567 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Time-integrated one-pot synthesis, X-ray structure, and redox properties of electrochromic 1,3-diarylisobenzofurans.
Hamura, Toshiyuki; Nakayama, Ryosuke; Hanada, Keisuke; Sakano, Yuto; Katoono, Ryo; Fujiwara, Kenshu; Suzuki, Takanori.
Chem. Lett. 42 1244 - 1246 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Geometrical remote steric effects in 4,5-disubstituted-9,10-dihydrophenanthrenes: expansion of prestrained C9-C10 bond in di(spiroacridan) derivatives.
Wada, Kazuhisa; Takeda, Takashi; Kawai, Hidetoshi; Katoono, Ryo; Fujiwara, Kenshu; Suzuki, Takanori.
Chem. Lett. 42 1194 - 1196 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Preparation, properties, and X-ray structures of bis(10-methyl-9-methyleneacridan)-type electron donors with a thiophene, bithiophene, or terthiophene skeleton: redox switching of thiophene-thienoquinoid structure accompanied by UV-vis-NIR electrochromic
Suzuki, Takanori; Hoshiyama, Yuuki; Wada, Kazuhisa; Ishigaki, Yusuke; Miura, Youhei; Kawai, Hidetoshi; Katoono, Ryo; Fujiwara, Kenshu; Fukushima, Takanori.
Chem. Lett. 42 1004 - 1006 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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5,10-dihydrobenzo[a]indolo[2,3-c]carbazole: a highly fluorescent disk-shaped electron donor exhibiting dual UV-vis-NIR and fluorescence spectral changes upon electrolysis.
Suzuki, Takanori; Tokimizu, Yusuke; Sakano, Yuto; Katoono, Ryo; Fujiwara, Kenshu; Naoe, Saori; Fujii, Nobutaka; Ohno, Hiroaki.
Chem. Lett. 42 1001 - 1003 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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A C3-symmetric chiroptical molecular propeller based on hexakis(phenylethynyl)benzene with a threefold terephthalamide: stereospecific propeller generation through the cooperative transmission of point chiralities on the host and guest upon complexation.
Katoono, Ryo; Kawai, Hidetoshi; Ohkita, Masakazu; Fujiwara, Kenshu; Suzuki, Takanori.
Chem. Commun. 49 10352 - 10354 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Oxidative conversion of tetraaryldihydrodibenzothiepins into elemental sulfur and stable cationic dyes accompanied by dual UV-vis and CD spectral changes.
Suzuki, Takanori; Kuroda, Takuma; Tamaoki, Hitomi; Higasa, Sho; Katoono, Ryo; Fujiwara, Kenshu; Fukushima, Takanori; Yamada, Hidetoshi.
Chem. Lett. 42 706 - 708 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Redox switching of conjugation length using 9,9,10,10-tetraaryl-9,10-dihydrophenanthrene as an ON/OFF unit: preparation, X-ray structure, and redox properties of perfluorobiphenyl derivative and its SNAr reactions to π-extended analogues.
Suzuki, Takanori; Tamaoki, Hitomi; Katoono, Ryo; Fujiwara, Kenshu; Ichikawa, Junji; Fukushima, Takanori.
Chem. Lett. 42 703 - 705 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Hydrindacene-Based Acetylenic Macrocycles with Horizontally and Vertically Ordered Functionality Arrays.
Kawai, Hidetoshi; Utamura, Tatsuya; Motoi, Erina; Takahashi, Tomoko; Sugino, Hiroyoshi; Tamura, Manabu; Ohkita, Masakazu; Fujiwara, Kenshu; Saito, Takao; Tsuji, Takashi; Suzuki, Takanori.
Chem. Eur. J. 19 4513 - 4524 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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p-Terphenyl Derivatives from the Mushroom Thelephora
Norikura, T., Fujiwara, K., Yanai, T., Sano, Y., Sato, T., Tsunoda, T., Kushibe, K., Todate, A., Morinaga, Y., Iwai, K., Matsue, H.
J. Agric. Food Chem. 61 ( 6 ) 1258 - 1264 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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An Ireland-Claisen rearrangement/RCM based approach for the construction of the EF-ring of ciguatoxin 3C
Nogoshi, K., Domon, D., Fujiwara, K., Kawamura, N., Katoono, R., Kawai, H., Suzuki, T.
Tetrahedron Lett. 54 ( 7 ) 676 - 680 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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7,7,8,8-Tetraaryl-o-quinodimethane Stabilized by Dibenzo Annulation: A Helical π-Electron System That Exhibits Electrochromic and Unique Chiroptical Properties
Suzuki, T., Sakano, Y., Iwai, T., Iwashita, S., Miura, Y., Katoono, R., Kawai, H., Fujiwara, K., Tsuji, Y., Fukushima, T.
Chem.--Eur. J. 2013年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Stable neutral radicals based on the polyazaacene skeleton that exhibit high electrochemical amphotericity
Miura, Y., Chiba, H., Katoono, R., Kawai, H., Fujiwara, K., Suzuki, S., Okada, K., Suzuki, T.
Tetrahedron Lett. 53 ( 48 ) 6561 - 6564 2012年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Effects of Axle-Core, Macrocycle, and Side-Station Structures on the Threading and Hydrolysis Processes of Imine-Bridged Rotaxanes
Sugino, H., Kawai, H., Umehara, T., Fujiwara, K., Suzuki, T.
Chem.--Eur. J. 18 ( 43 ) 13722 - 13732 2012年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Chirality sensing based on changes in conformation of dynamic terephthalamide hosts: propeller-, double-arm-, and figure-of-eight-shaped hosts
Katoono, R., Kawai, H., Fujiwara, K., Suzuki, T.
有機合成化学協会誌 70 ( 6 ) 640 - 650 2012年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Nonadditive substituent effects on expanding prestrained C-C bond in crystal: X-ray analyses on unsymmetrically substituted tetraarylpyracenes prepared by a flow microreactor method
Suzuki, T., Uchimura, Y., Ishigaki, Y., Takeda, T., Katoono, R., Kawai, H., Fujiwara, K., Nagaki, A., Yoshida, J.
Chem. Lett. 41 ( 5 ) 541 - 543 2012年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Total Synthesis of Thelephantin O, Vialinin A/Terrestrin A, and Terrestrins B-D
Fujiwara, K., Sato, T., Sano, Y., Norikura, T., Katoono, R., Suzuki, T., Matsue, H.
J. Org. Chem. 77 ( 11 ) 5161 - 5166 2012年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Molecular gyroscope with a trans-cyclohexane-1,4-diimine rotor unit: isolation and characterization of a geometric isomer as a formal intermediate of hindered rotation
Sugino, H., Kawai, H., Fujiwara, K., Suzuki, T.
Chem. Lett. 41 ( 1 ) 79 - 81 2012年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Induced preference for axial chirality in a triarylmethylium o,o-dimer upon complexation with natural γ-cyclodextrin: strong ECD signaling and fixation of supramolecular chirality to molecular chirality
Suzuki, T., Tamaoki, H., Wada, K., Katoono, R., Nehira, T., Kawai, H., Fujiwara, K.
Chem. Commun. 48 ( 22 ) 2812 - 2814 2012年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Construction of main-chain type oligorotaxanes and their switching properties: controlled dynamic behavior by imine-bonding formation and cleavage.
Sugino, H., Kawai, H., Fujiwara, K., Suzuki, T.
Kobunshi Ronbunshu 68 ( 12 ) 795 - 803 2011年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Hysteretic tricolor electrochromic systems based on the dynamic redox properties of unsymmetrically substituted dihydrophenanthrenes and biphenyl-2,2'-diyl dications: efficient precursor synthesis by a flow microreactor method.
Ishigaki, Y., Suzuki, T., Nishida, J.-i., Nagaki, A., Takabayashi, N., Kawai, H., Fujiwara, K., Yoshida, J.-i.
Materials 4 1906 - 1926 2011年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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1,4-Diaryl-7,10-dimethoxyquinoxalino[2,3-b]quinoxalines and their dihydro derivatives: redox switching of NIR absorption and fluorescence.
Miura, Y., Kawai, H., Fujiwara, K., Suzuki, T.
Chemistry Letters 40 ( 9 ) 975 - 977 2011年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Improved synthesis of C8-C20 segment of pectenotoxin-2.
Fujiwara, K., Suzuki, Y., Koseki, N., Murata, S.-i., Murai, A., Kawai, H., Suzuki, T.
Tetrahderon Letters 52 ( 43 ) 5589 - 5592 2011年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Anticancer Activities of Thelephantin O and Vialinin A Isolated from Thelephora aurantiotincta.
Norikura, T., Fujiwara, K., Narita, T., Yamaguchi, S., Morinaga, Y., Iwai, K., Matsue, H.
J. Agric. Food Chem. 59 ( 13 ) 6974 - 6979 2011年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the C22-C37 segment of prorocentin.
A. Takemura, Y. Katagiri, K. Fujiwara, H. Kawai, and T. Suzuki
Tetrahedron Letters 52 ( 11 ) 1222 - 1224 2011年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Model studies for the stereoselective construction of the BC-ring of armatol F based on Ireland-Claisen rearrangement and relay ring-closing olefin metathesis
K. Fujiwara, K. Tanaka, Y.Katagiri, H. Kawai, and T. Suzuki
Tetrahedron Letters 51 ( 34 ) 4543 - 4546 2010年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Studies toward the total synthesis of armatol F: stereoselective construction of the C6 and C7 stereocenters and formation of the A-ring skeleton
K. Fujiwara, Y. Hirose, D. Sato, H. Kawai, and T. Suzuki
Tetrahedron Letters 51 ( 32 ) 4263 - 4266 2010年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Drastic change in racemization barrier upon redox reactions: novel chiral-memory units based on dynamic redox systems
T. Suzuki, K. Wada, Y. Ishigaki, Y. Yoshimoto, E. Ohta, H. Kawai, and K. Fujiwara
Chem. Commun. 46 ( 23 ) 4100 - 4102 2010年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Intramolecular chirality transfer in trans-5,6-diaryl-5,6-dihydro-1,10-phenanthroline-5,6-diols: solvato- and halochromic responses by circular dichroism.
T. Suzuki, Y. Miura, T. Nehira, H. Kawai, and K. Fujiwara
Chemistry Letters 39 ( 7 ) 695 - 697 2010年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Halochromic chiroptical response of novel bis(9-acridinyl)-type fluorophores with a helical pi-framework.
T. Nehira, Y. Yoshimoto, K. Wada, H. Kawai, K. Fujiwara, and T. Suzuki
Chemistry Letters 39 ( 3 ) 165 - 167 2010年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Phenanthrene-4,5-diylbis(10-methylacridinium) with a short C+ -- C+ contact: preparation, molecular structure, redox properties, and electrochromic interconversion with dihydropyrene derivative
T. Suzuki, Y. Yoshimoto, K. Wada, T. Takeda, H. Kawai, and K. Fujiwara
Heterocycles 80 ( 1 ) 149 - 155 2010年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Dynamic Molecular Propeller: Supramolecular Chirality Sensing by Enhanced Chiroptical Response through the Transmission of Point Chirality to Mobile Helicity
R. Katoono, H. Kawai, K. Fujiwara, and T. Suzuki
Journal of the American Chemical Society 131 ( 46 ) 16896 - 16904 2009年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Multi-Input/Multi-Output Molecular Response System Based on the Dynamic Redox Behavior of 3,3,4,4-Tetraaryldihydro[5]helicene Derivatives: Reversible Formation/Destruction of Chiral Fluorophore and Modulation of Chiroptical Properties by Solvent Polarity
T. Suzuki, Y. Ishigaki, T. Iwai, H. Kawai, K. Fujiwara, H. Ikeda, Y. Kano, and K. Mizuno
Chemistry--A European Journal 15 ( 37 ) 9434 - 9441 2009年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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4,5-bis(diarylmethylene)-1,3-dithiole: a novel helical electron donor exhibiting electrochromic behavior
T. Suzuki, S. Mikuni, Y. Ishigaki, H. Higuchi, H. Kawai, and K. Fujiwara
Chemistry Letters 38 ( 7 ) 748 - 749 2009年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Preparation and X-ray structures of trans-5,6-diaryl-5,6-dihydro-1,10-phenanthroline-5,6-diols: formation of supramolecular rod by hydrogen bonds
T. Suzuki, Y. Miura, R. Tamaki, H. Kawai, and K. Fujiwara
Chemistry Letters 38 ( 7 ) 670 - 671 2009年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Negligible diradical character for the ultralong C-C bond in 1,1,2,2-tetraarylpyracene derivatives at room temperature
T. Takeda, H. Kawai, R. Herges, E. Mucke, Y. Sawai, K. Murakoshi, K. Fujiwara, and T. Suzuki
Tetrahedron Letters 50 ( 26 ) 3693 - 3697 2009年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Intramolecular methylacridan-methylacridinium complexes with a phenanthrene-4,5-diyl or related skeleton: geometry-property relationships in isolable C-H bridged carbocations
T. Suzuki, Y. Yoshimoto, T. Takeda, H. Kawai, and K. Fujiwara
Chemistry--A European Journal 15 ( 9 ) 2210 - 2216 2009年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Stereoselective construction of an anti-beta -alkoxy ether by Ireland-Claisen rearrangement for medium-ring ether synthesis
K. Fujiwara, N. Kawamura, H. Kawai, and T. Suzuki
Tetrahedron Letters 50 ( 11 ) 1236 - 1239 2009年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Unprecedented four-way-output molecular response system based on biphenyl-2,2'-diyldiacridiniums: induction of axial chirality through intramolecular hydrogen bonds between chiral amide groups
T. Suzuki, K. Ohta, T. Nehira, H. Higuchi, E. Ohta, H. Kawai, and K. Fujiwara
Tetrahedron Letters 49 ( 5 ) 772 - 776 2008年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Designed molecular propellers based on tetraarylterephthalamide and their chiroptical properties induced by biased helicity through transmission of point chirality
R. Katoono, H. Kawai, K. Fujiwara, and T. Suzuki
Chemical Communications ( 40 ) 4906 - 4908 2008年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Four-way-output molecular response system based on the dihydrodibenzo[c,g]phenanthrene skeleton: modulation of CD and FDCD activity by acid and electron-transfer
E. Ohta, T. Nehira, H. Kawai, K. Fujiwara, and T. Suzuki
Tetrahedron Letters 49 ( 5 ) 777 - 781 2008年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the ABC-ring models of goniodomin A: preference for the unnatural configuration at C11 of the BC-ring in a non-macrocyclic model system
T. Katagiri, K. Fujiwara, H. Kawai, and T. Suzuki
Tetrahedron Letters 49 ( 20 ) 3242 - 3247 2008年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the DE-ring of goniodomin A and prediction of its natural relative stereochemistry
T. Katagiri, K. Fujiwara, H. Kawai, and T. Suzuki
Tetrahedron Letters 49 ( 2 ) 233 - 237 2008年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Ultralong carbon-carbon bonds in dispirobis(10-methylacridan) derivatives with an acenaphthene, pyracene, or dihydropyracylene skeleton
H. Kawai, T. Takeda, K. Fujiwara, M. Wakeshima, Y. Hinatsu, and T. Suzuki
Chemistry--A European Journal 14 ( 19 ) 5780 - 5793 2008年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Concise stereoselective synthesis of cis-3-alkoxy-2-carbomethoxy medium-ring oxacycles from (R)-3-(3-butenyl)-4-propynoyloxazolidin-2-one
D. Sato, K. Fujiwara, H. Kawai, and T. Suzuki
Tetrahedron Letters 49 ( 9 ) 1514 - 1517 2008年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Ultralong C-C bonds in hexaphenylethane derivatives
T. Suzuki, T. Takeda, H. Kawai, and K. Fujiwara
Pure and Applied Chemistry 80 ( 3 ) 547 - 553 2008年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Entropy- and Hydrolytic-Driven Positional Switching of Macrocycle between Imine- and Hydrogen-Bonding Stations in Rotaxane-Based Molecular Shuttles
T. Umehara, H. Kawai, K. Fujiwara, and T. Suzuki
Journal of the American Chemical Society 130 ( 42 ) 13981 - 13988 2008年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Electrochiroptical systems based on biphenyl-2,2'-diyl-type dicationic dyes: strong chiroptical signals through the transmission of point chirality to axial chirality
T. Suzuki, T. Iwai, E. Ohta, H. Kawai, and K. Fujiwara
Tetrahedron Letters 48 ( 20 ) 3599 - 3603 2007年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Polycavernoside C and C2, the new analogs of the human lethal toxin polycavernoside A, from the red alga, Gracilaria edulis,
M. Yotsu-Yamashita, K. Abe, T. Seki, K. Fujiwara, and T. Yasumoto
Tetrahedron Letters 48 ( 13 ) 2255 - 2259 2007年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Multi-input-multi-output molecular response system based on dynamic redox behavior of hexaphenylethane-type electron donors with the tetrahydrophenanthrazepine skeleton: strong chiroptical signals through the transmission of point chirality to helicity
T. Suzuki, S. Tanaka, H. Kawai, and K. Fujiwara
Chemistry--An Asian Journal 2 ( 1 ) 171 - 177 2007年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Chromic and fluorescence response system based on the dihydrophenanthroline-bipyridine skeleton: dynamic redox behavior and metal binding properties
T. Suzuki, R. Tamaki, E. Ohta, T. Takeda, H. Kawai, K. Fujiwara, and M. Kato
Tetrahedron Letters 48 ( 22 ) 3823 - 3827 2007年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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プレローレアチンとローレンシンの全合成およびシガトキシンの中員環エーテル部の合成
K. Fujiwara
有機合成化学協会誌 65 ( 5 ) 502 - 510 2007年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Dynamic redox systems as electrochromic materials: bistability and advanced response
T. Suzuki, E. Ohta, H. Kawai, K. Fujiwara, and T. Fukushima
Synlett ( 6 ) 851 - 869 2007年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis and relative stereochemistry of the A- and F-rings of goniodomin A
K. Fujiwara, J. Naka, T. Katagiri, D. Sato, H. Kawai, and T. Suzuki
Bulletin of the Chemical Society of Japan 80 ( 6 ) 1173 - 1186 2007年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the C8-C20 and C21-C30 segments of pectenotoxin 2
K. Fujiwara, Y.-i. Aki, F. Yamamoto, M. Kawamura, M. Kobayashi, A. Okano, D. Awakura, S. Shiga, A. Murai, H. Kawai, and T. Suzuki
Tetrahedron Letters 48 ( 26 ) 4523 - 4527 2007年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Intramolecular triarylmethane-triarylmethylium complexes with a naphthalene-1,8-diyl skeleton: isolation, structure, and reactivities of the C-H-bridged carbocations
T. Takeda, H. Kawai, K. Fujiwara, and T. Suzuki
Chemistry--A European Journal 13 ( 28 ) 7915 - 7925 2007年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the EF-Ring of Ciguatoxin 3C Based on the [2,3]-Wittig Rearrangement and Ring-Closing Olefin Metathesis
A. Goto, K. Fujiwara, A. Kawai, H. Kawai, and T. Suzuki
Organic Letters 9 ( 26 ) 5373 - 5376 2007年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the common FGHI-ring part of ciguatoxins.
A. Takizawa, K. Fujiwara, E. Doi, A. Murai, H. Kawai, and T. Suzuki
Tetrahedron Lett. 47 ( 5 ) 747 - 751 2006年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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The first stable tetraarylacenaphthenequinodimethanes: Preparation, highly deformed structure, and reversible interconversion with acenaphthylene-5,6-diyl dicationic dyes
T. Suzuki, S. Iwashita, T. Yoshino, H. Kawai, K. Fujiwara, M. Ohkita, T. Tsuji, K. Ono, and M. Takenaka
Tetrahedron Lett. 47 467 - 471 2006年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Convergent synthesis of the common FGHI-ring part of ciguatoxins.
A. Takizawa, K. Fujiwara, E. Doi, A. Murai, H. Kawai, and T. Suzuki
Tetrahedron 62 ( 31 ) 7408 - 7435 2006年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Dynamic covalently bonded rotaxanes cross-linked imine bonds between the axle and ring: inverse temperature dependence of subunit mobility.
H. Kawai, T. Umehara, K. Fujiwara, T. Tsuji, and T. Suzuki
Angew. Chem. Int. Ed. 45 ( 26 ) 4281 - 4286 2006年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Stereospecific change in conformation upon complexation of an exoditopic tetraamide host with a bis(ammonium) guset: chiral recognition and strong CD signaling
Katoono, R., Kawai, H., Fujiwara, K., Suzuki, T.
Chem. Commun. ( 41 ) 5154 - 5156 2005年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Exceptionally large difference in bond length among conformational isomorphs of a hexaphenylethane derivative with a dispiropyracene skeleton
Kawai, H., Takeda, T., Fujiwara, K., Inabe, T., Suzuki, T.
Crystal Growth & Design 5 ( 6 ) 2256 - 2260 2005年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Tetracyanoanthraquinodimethanes with a Chiral Amide Group: Preparation, Properties, and Charge-Transfer Photochirogenetic Reaction with 1,2-Dianisylacenaphthene-1,2-diol
Suzuki, T., Ichioka, K., Higuchi, H., Kawai, H., Fujiwara, K., Ohkita, M., Tsuji, T., Takahashi, Y.
J. Org. Chem. 70 ( 14 ) 5592 - 5598 2005年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the EF-ring segment of ciguatoxin CTX1B based on novel regioselective reduction of unsaturated cyanohydrins and ring-closing olefin metathesis
Takemura, A., Fujiwara, K., Shimawaki, K., Murai, A., Kawai H., Suzuki, T.
Tetrahedron 61 ( 31 ) 7392 - 7419 2005年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of (+)-laurencin via ring expansion of a C-glycoside derivative
Fujiwara, K., Yoshimoto, S., Takizawa, A., Souma, S.-i., Mishima, H., Murai, A., Kawai, H., Suzuki, T.
Tetrahedron Lett. 46 ( 40 ) 6819 - 6822 2005年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Stereoselective synthesis of cis- and trans-2,3-disubstituted eight-membered medium-ring ethers based on Ireland-Claisen rearrangement of 3-alkoxy-2-propenyl glycolate esters and ring-closing olefin metathesis
Fujiwara, K., Goto, A., Sato, D., Kawai, H., Suzuki, T.
Tetrahedron Lett. 46 ( 20 ) 3465 - 3468 2005年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Convergent synthesis of the IJKLM-ring part of ciguatoxin CTX3C
Domon, D., Fujiwara, K., Murai, A., Kawai, H., Suzuki, T.
Tetrahedron Lett. 46 ( 48 ) 8285 - 8288 2005年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Multipoint Recognition of Catecholamines by Hydrindacene-Based Receptors Accompanied by the Complexation-Induced Conformational Switching
Kawai, H., Katoono, R., Fujiwara, K., Tsuji, T., Suzuki, T.
Chem. Eur. J. 11 ( 3 ) 815 - 824 2005年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Butane-1,4-diyl dications stabilized by steric factors: electrochiroptical response systems based on reversible interconversion between dihydro[5]helicene-type electron acceptors and electron-donating 1,1'-binaphthyls
Ohta, E., Higuchi, H., Kawai, H., Fujiwara, K., Suzuki, T.
Org. Biomol. Chem. 3 ( 16 ) 3024 - 3031 2005年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the common left-half part of pectenotoxins
Fujiwara,K., Kobayashi, M., Yamamoto, F., Aki, Y.-i., Kawamura, M., Awakura, D., Amano, S., Okano, A., Murai, A., Kawai , H., Suzuki, T.
Tetrahedron Lett. 46 ( 30 ) 5067 - 5069 2005年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Isolation and Low-Temperature X-ray Analysis of Intramolecular Triarylmethane-Triarylmethylium Complex: Preference for a C-H-Bridged Unsymmetric Structure Exhibiting a Facile 1,5-Hydride Shift and Charge-Transfer Interaction
Kawai, H., Takeda, T., Fujiwara, K., Suzuki, T.
J. Am. Chem. Soc. 127 ( 35 ) 12172 - 12173 2005年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the C42-C52 part of ciguatoxin CTX3C
Domon, D., Fujiwara, K., Ohtaniuchi, Y., Takezawa, A., Takeda, S., Kawasaki, H., Murai, A., Kawai, H., Suzuki, T.
Tetrahedron Lett. 46 ( 48 ) 8279 - 8283 2005年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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peri-Interaction between Diarylmethyl and Diarylmethylium Units in 1,8-Disubstituted Naphthalenes: Preference of Localized Structure for the C-H Bridged Carbocation
Kawai, H., Nagasu, T., Takeda, T., Fujiwara, K., Tsuji, T., Ohkita, M., Nishida, J.-i. and Suzuki, T.
Tetrahedron Lett. 45 ( 23 ) 4553 - 4558 2004年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Convergent Synthesis of the ABCDE-Ring Part of Ciguatoxin CTX3C
Fujiwara, K., Goto, A., Sato, D., Ohtaniuchi, Y., Tanaka, H., Murai, A., Kawai, H. and Suzuki, T.
Tetrahedron Lett. 45 ( 38 ) 7011 - 7014 2004年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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[10]Paracyclophanediamides and Their Octadehydro Derivatives: Novel Exotopic Receptors with Hydrogen-Bonding Sites on the Bridge
Katoono, R., Kawai, H., Fujiwara, K. and Suzuki, T.
Tetrahedron Lett. 45 ( 46 ) 8455 - 8459 2004年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Dynamic Redox Systems Based on Bis(spiroxanthene)-Type Donors with a Polycyclic Aromatic Hydrocarbons: Preparation, X-Ray Structures and Electrochromic Response with Fluorescence Change
Suzuki, T., Tanaka, S., Higuchi, H., Kawai, H. and Fujiwara, K.
Tetrahedron Lett. 45 ( 46 ) 8563 - 8567 2004年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Novel Branched Ether Formation via Conjugate Reduction of an Unsaturated Cyanohydrin Derivative and Its Synthetic Application to the EF-Ring Segment of Ciguatoxin
Takemura, A., Fujiwara, K., Murai, A., Kawai, H. and Suzuki, T.
Tetrahedron Lett. 45 ( 41 ) 7567 - 7571 2004年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Positive Homotropic Allosteric Binding of Benzenediols in a Hydrindacene-Based Exoditopic Receptor: Cooperativity in Amide Hydrogen Bonding
Kawai, H., Katoono, R., Nishimura, K., Matsuda, S., Fujiwara, K., Tsuji, T. and Suzuki, T.
J. Am. Chem. Soc. 126 ( 16 ) 5034 - 5035 2004年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Pyrazino-Tetracyanonaphthoquinodimethanes: Sterically Deformed Electron Acceptors Affording Zwitterionic Radicals
Suzuki, T., Miyanari, S., Kawai, H., Fujiwara, K., Fukushima, T., Miyashi, T. and Yamasiha, Y.
Tetrahedron 60 ( 9 ) 1997 - 2003 2004年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Preparation, Properties, and X-Ray Structures of 5,5'-Bi(8-aminoquinoxalyl)s: Novel Wurster-Type Electron Donors with a Heterobiaryl Skeleton
Suzuki, T., Saito, M., Kawai, H., Fujiwara, K. and Tsuji, T.
Tetrahedron Lett. 45 ( 2 ) 329 - 333 2004年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Formal Total Synthesis of Hemibrevetoxin B by a Convergent Strategy
Fujiwara, K., Sato, D., Watanabe, M., Morishita, H., Murai, A., Kawai, H. and Suzuki, T.
Tetrahedron Lett. 45 ( 27 ) 5243 - 5246 2004年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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First stable 7,7,8,8-tetraaryl-o-quinodimethane: isolation, X-ray structure, electrochromic response of 9,10-bis(dianisylmethylene)-9,10-dihydrophenanthrene
Iwashita, S., Ohta, E., Higuchi, H., Kawai, H., Fujiwara, K., Ono, K., Takenaka, M. and Suzuki, T.
Chem. Commun. ( 18 ) 2076 - 2077 2004年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Three-Way-Output Response System by Electric Potential: UV-Vis, CD, and Fluorescence Spectral Changes upon Electrolysis of the Chiral Ester of Tetracyanoanthraquinodimethane
Higuchi, H., Ichioka, K., Kawai, H., Fujiwara, K., Ohkita, M., Tsuji, T. and Suzuki, T.
Tetrahedron Lett. 45 ( 15 ) 3027 - 3030 2004年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Short Nonbond and Long C-C Bond in Naphthalene-1,8-diylbis(10-methylacridinium) and the Corresponding Hexaphenylethane derivative: A New Electrochromic Pair Exhibiting Dynamic Redox Properties
Kawai, H., Takeda, T., Fujiwara, K. and Suzuki, T.
Tetrahedron Lett. 45 ( 45 ) 8289 - 8293 2004年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Electrochiroptical Responce of 2,2'-(2,2-Diarylethenyl)binaphthyl-type Electron Donors that Undergo Reversible C-C Bond Formation/Breaking Upon Two-Electron Transfer
Higuchi, H., Oota, E., Kawai, H., Fujiwara, K., Tsuji, T., and Suzuki, T.
J. Org. Chem. 68 ( 17 ) 6605 - 6610 2003年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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A Novel Redox Switch for Fluorescence: Drastic UV-Vis and Fluorescence Spectral Changes upon Electrolysis of a Hexaphenylethane Derivative of 10,10 '-Dimethylbiacridan
Suzuki, T., Migita, A., Higuchi, H., Kawai, H., Fujiwara, K. and Tsuji, T.
Tetrahedron Lett. 44 ( 36 ) 6837 - 6840 2003年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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4,7-Bis(dimethylamino)benzimidazoles and Twin-type Derivatives: Reversible Two-stage Redox System Modulated by Proton-transfer
Suzuki, T., Tsubata, Y., Obana, Y., Fukushima, T., Miyashi, T., Saito, M., Kawai, H., Fujiwara, K. and Akiyama, K.
Tetrahedron Lett. 44 ( 43 ) 7881 - 7884 2003年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Formation of Keto-carbenium from 1,2,2-Triarylacenaphten-1-ols by Breaking a Long C-C Bond: Unusual Alcohol Protonolysis Accompanied by Formal Hydride Abstraction
Suzuki, T., Nagasu, T., Kawai, H., Fujiwara, K. and Tsuji, T.
Tetrahedron Lett. 44 ( 32 ) 6095 - 6098 2003年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Syntheses of the D-, E-, F-, and I-Ring Parts of Ciguatoxin by a Common Strategy Starting from Tri-O-acetyl-D-glucal
Fujiwara, K., Koyama, Y., Doi, E., Shimawaki, K., Ohtaniuchi, Y., Takemura, A., Souma, S.-i., and Murai, A.
Synlett ( 9 ) 1496 - 1499 2002年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the AB-Ring Segment for the Convergent Construction of the Left Half in Ciguatoxin
Tanaka, H., Kawai, K., Fujiwara, K., and Murai, A.
Tetrahedron 58 ( 50 ) 10017 - 10031 2002年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Total Synthesis of Prelaureatin
Fujiwara, K., Souma, S.-i., Mishima, H., and Murai, A.
Synlett ( 9 ) 1493 - 1495 2002年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Convergent Synthesis of the BCDE-Ring Part of Ciguatoxin
Fujiwara, K., Koyama, Y., Kawai, K., Tanaka, H., and Murai, A.
Synlett ( 11 ) 1835 - 1838 2002年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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海産縮環型ポリエーテルの生合成仮説の有機化学的実現
Fujiwara, K.
有機合成化学協会誌 59 ( 10 ) 948 - 959 2001年01月 [査読有り]
研究論文(学術雑誌) 単著
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Benzyloxymethyl Group as a Convertible Internal Ligand for La(OTf)3-Catalyzed 7-endo Ring-opening of Hydroxy Epoxide
Fujiwara, K., Morishita, H., Tokiwano, T. and Murai, A.
Heterocycles 54 109 - 110 2001年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Convergent Syntheses of the Enantiomeric CD- and JK-Ring Parts of Ciguatoxin
Fujiwara, K., Takaoka, D., Kusumi, K., Kawai, K. and Murai, A.
Synlett 691 - 693 2001年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Novel Oxepane Formation by TiCl4-Catalyzed Nucleophilic Cleavage of 1-Alkoxymethyl-6,8-dioxabicyclo[3.2.1]octanes
K. Fujiwara, A. Amano, T. Tokiwano, and A. Murai
Tetrahedron 56 ( 8 ) 1065 - 1080 2000年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Effect of Molecular Sieves and Methanol on the endo-Selectivity in La(OTf)3-catalyzed Cyclization of 5-Hydroxy-2-methoxymethyl-1,2-epoxide System
T. Tokiwano, K. Fujiwara, and A. Murai
Chem. Lett. ( 3 ) 272 - 273 2000年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Asymmetric Synthesis of the A-ring Part of Ciguatoxin by the Strategy Based on Diastereoselective Hydroboration and Ring Closing Metathesis
K. Fujiwara, H. Tanaka, and A. Murai
Chem. Lett. ( 6 ) 610 - 611 2000年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Stereochemistry in the Bromination of 2,7-Dialkyl-3-hydroxyoxepane System Induced by R3P-Br2 Complex
K. Fujiwara, M. Kobayashi, D. Awakura, and A. Murai
Synlett ( 8 ) 1187 - 1189 2000年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Biomimetic Construction of Fused Tricyclic Ether by Cascaded endo-Cyclization of the Hydroxy Triepoxide
T. Tokiwano, K. Fujiwara, and A. Murai
Synlett ( 3 ) 335 - 338 2000年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthetic Studies on Pectenotoxins: Synthesis of the Common C8-C18 THF Fragment
D. Awakura, K. Fujiwara, and A. Murai
Synlett ( 12 ) 1733 - 1736 2000年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Four-Step Convergent Synthesis of trans-Fused Tetracyclic Oxane
K. Fujiwara, H. Morishita, K. Saka, and A. Murai
Tetrahedron Lett. 41 ( 4 ) 507 - 508 2000年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Total Synthesis of Polycavernoside A
Fujiwara, K. and Murai, A.
J. Synth. Org. Chem. Jpn. 57 ( 11 ) 993 - 1003 1999年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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A Simple Convergent Method for the Construction of Fused Tri- and Tetracyclic Ethers
Fujiwara, K., Saka, K., Takaoka, D. and Murai, A.
Synlett 1037 - 1040 1999年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Total Synthesis of (+)-Obtusenyne
Fujiwara, K., Awakura, D., Tsunashima, M., Nakamura, A., Honma, T. and Murai, A.
J. Org. Chem. 64 ( 8 ) 2616 - 2617 1999年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis and Biological Evaluation of Analogues of the Marine Toxin Polycavernoside A
Barriault, L., Boulet, S. L., Fujiwara, K., Murai, A., Paquette, L. A. and Yotsu-Yamashita, M.
Bioorg. Med. Chem. Lett. 9 ( 14 ) 2069 - 2072 1999年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Determination of the Absolute Configurations of Norte's Obtusenynes by Total Syntheses of (12R,13R)- (-)- and (12S,13R)-(+)-Obtusenynes
Awakura, D., Fujiwara, K. and Murai, A.
Chem. Lett. ( 6 ) 461 - 462 1999年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Chemical Realization of the Biogenetic Pathways Proposed for the Fused-Polycyclic Ethers of Marine Origins
Fujiwara, K., Hayashi, N., Tokiwano, T. and Murai, A.
Heterocycles 50 561 - 593 1999年01月 [査読有り]
研究論文(学術雑誌) 国内共著
-
La(OTf)3-Catalyzed 7-Endo and 8-Endo Selective Cyclizations of Hydroxy Epoxides
Fujiwara, K., Mishima, H., Amano, A., Tokiwano, T., and Murai, A.
Tetrahedron Lett. 39 ( 5-6 ) 393 - 396 1998年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Novel Oxepane Formation by Reductive Cleavage of 1-Methoxymethyl-6,8-dioxabicyclo[3.2.1]octanes
Fujiwara, K., Amano, A., Tokiwano, T., and Murai, A.
Heterocycles 47 111 - 112 1998年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Total Synthesis and Absolute Configuration of Polycavernoside A
Fujiwara, K., Murai, A., Yotsu-Yamashita, M., and Yasumoto, T.
J. Am. Chem. Soc. 120 ( 41 ) 10770 - 10771 1998年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthetic Studies on Ciguatoxin [2]; Synthesis of the A,B,C-ring System
Oka, T., Fujiwara, K., and Murai, A.
Tetrahedron 54 ( 1-2 ) 21 - 44 1998年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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The Substituent Effect on Stereoselective Reductive Lithiation of 4,5-Disubstituted 2-Phenylthiooxolane
Amano, S., Fujiwara, K., and Murai, A.
Chem. Lett. ( 5 ) 409 - 410 1998年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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The Synthesis of the Common C31-C40 Fragment of Pectenotoxins
Amano, S., Fujiwara, K. and Murai, A.
Synlett ( 11 ) 1300 - 1302 1997年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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The Biomimetic Construction of Fused Cyclic Polyethers
Hayashi, N., Fujiwara, K. and Murai, A.
Tetrahedron 53 ( 37 ) 12425 - 12468 1997年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Equilibrium in the Ring Expansion Reaction of the Bromo Epoxides
Hayashi, N., Fujiwara, K. and Murai, A.
Synlett ( 7 ) 793 - 794 1997年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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The Construction of the A, B, C-ring System of Ciguatoxin
Oka, T., Fujiwara, K. and Murai, A.
Tetrahedron Lett. 38 ( 46 ) 8053 - 8056 1997年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Diastereoselective Synthesis of the GH Ring Part of Ciguatoxin
Atsuta, H., Fujiwara, K. and Murai, A.
Synlett ( 3 ) 307 - 309 1997年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of 3-Hydroxy-5-oxonene via 2,3-Epoxy-5-oxonene
Fujiwara, K., Tsunashima, M., Awakura, D. and Murai, A.
Chem. Lett. ( 7 ) 665 - 666 1997年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of Both Enantiomers of the BC-Ring Part of Ciguatoxin
T. Oka, K. Fujiwara and A. Murai
Tetrahedron 52 ( 37 ) 12091 - 12110 1996年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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AgOTf-Promoted Conversion of 4,5-Epoxy-1-bromide into Tetrahydropyran Ring
N. Hayashi, K. Fujiwara and A. Murai
Chem. Lett. ( 5 ) 341 - 342 1996年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Fused Cyclic Ether Formations from Bromo-Diepoxides by AgOTf- Promoted Successive Ring Expansion Reactions
N. Hayashi, K. Fujiwara and A. Murai
Tetrahedron Lett. 37 ( 34 ) 6173 - 6176 1996年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis and relative configuration of the sugar part of a marine toxin polycavernoside-A
K. Fujiwara, S. Amano, and A. Murai
Chem. Lett. ( 3 ) 191 - 192 1995年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Relative configuration of a marine toxin polycavernoside-A
K. Fujiwara, S. Amano, and A. Murai
Chem. Lett. ( 9 ) 855 - 856 1995年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Stereoselective synthesis of Δ5-oxonene and its novel ring contraction to Δ4-oxocene.
K. Fujiwara, M. Tsunashima, D. Awakura, and A. Murai
Tetrahedron Lett. 36 ( 45 ) 8263 - 8266 1995年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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La(OTf)3-catalyzed 6-endo epoxide opening of 4,5-epoxy-4-methoxymethyl-1-hexanols
K. Fujiwara, T. Tokiwano, and A. Murai
Tetrahedron Lett. 36 ( 44 ) 8063 - 8066 1995年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Reactions of neocarzinostatin chromophore analogs with molecular oxygen
K. Fujiwara, H. Sakai, T. Tanaka, and M. Hirama
Chem. Lett. ( 3 ) 457 - 460 1994年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the tetrahydrofuran ring part of a marine toxin polycavernoside-A
N. Hayashi, T. Mine, K. Fujiwara, and A. Murai
Chem. Lett. ( 11 ) 2143 - 2146 1994年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of the tetrahydropyran ring part of a marine toxin polycavernoside-A
K. Fujiwara, S. Amano, T. Oka, and A. Murai
Chem. Lett. ( 11 ) 2147 - 2150 1994年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis of a hybrid molecule containing neocarzinostatin chromophore analog and minor groove binder
M. Tokuda, K. Fujiwara, T. Gomibuchi, M. Hirama, M. Uesugi, and Y. Sugiura
Tetrahedron Lett. 34 ( 4 ) 669 - 672 1993年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Origin of photo-lability of neocarzinostatin chromophore
T. Gomibuchi, K. Fujiwara, T. Nehira, and M. Hirama
Tetrahedron Lett. 34 ( 36 ) 5753 - 5756 1993年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Site-specific generation of nonstabilized α-amino carbanions a novel methodology toward the synthesis of 2-amino alcohols
T. Tsunoda, K. Fujiwara, Y. Yamamoto, and S. Ito
Tetrahedron Lett. 32 ( 17 ) 1975 - 1978 1991年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Enyne[3]cumulene. Synthesis and mode of aromatization
K. Fujiwara, H. Sakai, and M. Hirama
J. Org. Chem. 56 ( 5 ) 1688 - 1689 1991年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis and DNA cleaving abilities of functional neocarzinostatin chromophore analogs. Base discrimination by a simple alcohol
M. Hirama, T. Gomibuchi, K. Fujiwara, Y. Sugiura, and M. Uesugi
J. Am. Chem. Soc. 113 ( 26 ) 9851 - 9853 1991年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Synthesis and cycloaromatization of a neocarzinostatin chromophore analog equipped with an intramolecular nucleophile.
M. Hirama, M. Tokuda, and K. Fujiwara
Synlett ( 9 ) 651 - 653 1991年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Two diverse modes of aromatization of a new 10-membered ring analog of neocarzinostatin chromophore
K. Fujiwara, A. Kurisaki, and M. Hirama
Tetrahedron Lett. 31 ( 30 ) 4329 - 4332 1990年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Oxidative triggering for aromatization of the neocarzinostatin chromophore
T. Tanaka, K. Fujiwara, and M. Hirama
Tetrahedron Lett. 31 ( 41 ) 5947 - 5950 1990年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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The 10-membered ring analogs of neocarzinostatin chromophore: design, synthesis and mode of decomposition
M. Hirama, K. Fujiwara, K. Shigematu, and Y. Fukazawa
J. Am. Chem. Soc. 111 ( 11 ) 4120 - 4122 1989年01月 [査読有り]
研究論文(学術雑誌) 国内共著
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Baeyer-Villiger oxidation of β-ionone with surfactant-type peracid
Y. Fujise, K. Fujiwara, and Y. Ito
Chem. Lett. ( 9 ) 1475 - 1476 1988年01月 [査読有り]
研究論文(学術雑誌) 国内共著