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H. Nakai

Hokkaido University

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Journal of The Chemical Society-perkin Transactions 1 | 1972

Slow ring-inversion of the nine-membered lactam in 4-azabicyclo[5,2,2]-undeca-8,10-dien-3-one systems

Keiji Hemmi; H. Nakai; Shunji Naruto; Osamu Yonemitsu

The kinetic parameters for hindered inversion of the nine-membered lactam ring in 4-azabicyclo[5,2,2]undeca-8,10-dien-3-one systems have been determined by n.m.r. total line-shape analysis. These data may provide an example of hindered ring-inversion of a medium-sized ring caused by hindered rotation of the amide group.

Journal of the American Chemical Society | 1976

Photochemistry of the phthalimide system. VII. Regioselective remote photocyclization. Examples of a photochemical macrocyclic synthesis with sulfide-containing phthalimides

Y. Sato; H. Nakai; T. Mizoguchi; Yasumaru Hatanaka; Yuichi Kanaoka

Chemical & Pharmaceutical Bulletin | 1982

Photodecarboxylation of N-Phthaloyl-α-amino Acids

Yasuhiko Sato; H. Nakai; Tomishige Mizoguchi; Masazumi Kawanishi; Yasumaru Hatanaka; Yuichi Kanaoka

Journal of the American Chemical Society | 1972

Photocyclizations of pharmacodynamic amines. VII. Photorearrangements and roentgen-ray analyses of novel tyramine dimers.

Takeo Iwakuma; H. Nakai; Osamu Yonemitsu; D. S. Jones; Isabella L. Karle; Bernhard Witkop

Chemical & Pharmaceutical Bulletin | 1992

Application of Remote Photocyclization with a Pair System of Phthalimide and Methylthio Groups. A Photochemical Synthesis of Cyclic Peptide Models

Yasuhiko Sato; H. Nakai; Masao Wada; Tomishige Mizoguchi; Yasumaru Hatanaka; Yuichi Kanaoka

Chemical & Pharmaceutical Bulletin | 1983

Application of the Remote Photocyclization with a Pair System of Phthalimide and Methylthio Groups. A Photochemical Synthesis of Crown Ether Analogs

Masao Wada; H. Nakai; Yasuhiko Sato; Yasumaru Hatanaka; Yuichi Kanaoka

Chemical & Pharmaceutical Bulletin | 1982

Photocyclization of N-Alkoxyalkylphthalimides with Favored δ-Hydrogen Abstraction : Syntheses of Oxazolo [4, 3-α] isoindoles and Oxazolo [4, 3-α]-isoindole-1-spiro-1'-cycloalkane Ring Systems

Yasuhiko Sato; H. Nakai; Masao Wada; Hiroshi Ogiwara; Tomishige Mizoguchi; Yoshihiro Migita; Yasumaru Hatanaka; Yuichi Kanaoka

Journal of the American Chemical Society | 1970

Photocyclizations of pharmacodynamic amines. V. Unusual rearrangements of the mescaline skeleton

Osamu Yonemitsu; H. Nakai; Yuichi Kanaoka; Isabella L. Karle; Bernhard Witkop

Chemical & Pharmaceutical Bulletin | 1982

A REMOVABLE FUNCTIONAL GROUP IN A PHOTOCHEMICAL MACROCYCLIC SYNTHESIS : REMOTE PHOTOCYCLIZATION WITH A PAIR SYSTEM OF PHTHALIMIDE AND 1, 3-DITHIOLANYL GROUPS

Masao Wada; H. Nakai; Yasuhiko Sato; Yuichi Kanaoka

Journal of the American Chemical Society | 1974

Photocyclizations of N-chloroacetyltyramine. I. Formation of novel dimeric cage compounds.

Takeo Iwakuma; H. Nakai; Osamu Yonemitsu; Bernhard Witkop

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Yasuhiko Sato

Hokkaido University

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Yuichi Kanaoka

Tokyo Institute of Technology

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Tomishige Mizoguchi

University of Tokyo

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Osamu Yonemitsu

Okayama University of Science

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Yasumaru Hatanaka

University of Toyama

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Bernhard Witkop

National Institutes of Health

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Takeo Iwakuma

Hokkaido University

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Keiji Hemmi

Hokkaido University

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Yoshihiro Migita

Hokkaido University

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Isabella L. Karle

United States Naval Research Laboratory

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