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Osamu Ohtsuki

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Featured researches published by Osamu Ohtsuki.

Archive | 1982

Crystalline salt of basic L-amino acid with L-malic acid and process for the preparation thereof

Ichiro Chibata; Akihiko Sumi; Hiroshi Ito; Osamu Ohtsuki; Nozomu Izutsu

Bulletin of the Chemical Society of Japan | 1987

The Optical Resolution and Asymmetric Transformation of DL-p-Hydroxyphenylglycine with (+)-1-Phenylethanesulfonic Acid

Ryuzo Yoshioka; Masanori Tohyama; Osamu Ohtsuki; Shigeki Yamada; Ichiro Chibata

Bulletin of the Chemical Society of Japan | 1994

Optical Resolution, Characterization, and X-Ray Crystal Structures of Diastereomeric Salts of Chiral Amino Acids with (S)-(-)-1-Phenylethanesulfonic Acid.

Ryuzo Yoshioka; Osamu Ohtsuki; Tadamasa Date; Kimio Okamura; Masaru Senuma

Chemical & Pharmaceutical Bulletin | 1989

Efficient preparation of D-aspartic acid β-methyl ester as an aspoxicillin material by optical resolution, epimerization, and asymmetric transformation

Ryuzo Yoshioka; Osamu Ohtsuki; Masaru Senuma; Tetsuya Tosa

Bulletin of the Chemical Society of Japan | 1987

A Facile Method for the Production of D-p-Hydroxyphenylglycine. Asymmetric Transformation of DL-p-Hydroxyphenylglycine Using (+)-1-Phenylethanesulfonic Acid

Ryuzo Yoshioka; Masanori Tohyama; Shigeki Yamada; Osamu Ohtsuki; Ichiro Chibata

Archive | 1981

Di-L-cysteine L-malate and process for the production thereof

Ichiro Chibata; Akihiro Sumi; Osamu Ohtsuki; Nozomu Izutsu

Archive | 1979

Neutral crystalline salt of a basic L-amino acid with L-malic acid, and process for its preparation

Ichiro Chibata; Akihiko Sumi; Hiroshi Ito; Osamu Ohtsuki; Nozomu Izutsu

Archive | 1979

Neutrales kristallines salz einer basischen l-aminosaeure mit l-apfelsaeure und verfahren zu dessen herstellung Neutral crystalline salt of a basic L-amino acid with L-apfelsaeure and process for its preparation

Ichiro Chibata; Akihiko Sumi; Hiroshi Ito; Osamu Ohtsuki; Nozomu Izutsu

Archive | 1978

Method of preparing monopotassium L-malate and its monohydrate

Ichiro Chibata; Akihiko Sumi; Osamu Ohtsuki

Archive | 1978

A process for the preparation of mono potassium L-malate monohydrate and its

Ichiro Chibata; Akihiko Sumi; Osamu Ohtsuki

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Hiroshi Ito

California Institute of Technology

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Tetsuya Tosa

University of Pennsylvania

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