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Ryo Kikuchi

Okayama University

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Publication

Featured researches published by Ryo Kikuchi.

Tetrahedron Letters | 1990

Deprotection of carboxylic esters assisted by hydrogen bonding network in phenolic media. Its application to β-lactam antibiotic syntheses

Hideo Tanaka; Masatoshi Taniguchi; Yutaka Kameyama; Sigeru Torii; Michio Sasaoka; Takashi Shiroi; Ryo Kikuchi; Ichiro Kawahara; Akihiro Shimabayashi; Sigemitsu Nagao

Deprotection of p-methoxybenzyl, diphenylmethyl, and tert-butyl ester groups, which is an essential step of β-lactam antibiotic synthesis, can be performed successfully by gentle heating in phenolic media.

Tetrahedron | 1996

CHEMOSELECTIVE AEROBIC OXIDATION OF PENICILLIN AND CEPHALOSPORIN DERIVATIVES INTO SULFOXIDES

Hideo Tanaka; Ryo Kikuchi; Sigeru Torii

Abstract Aerobic oxidation of penicillin and cephalosporin derivatives in the presence of cobalt(III) acetylacetonate and an aldehyde under oxygen atmosphere took place in a chemoselective manner to afford the corresponding sulfoxides, exclusively.

Journal of Organic Chemistry | 1991

Deprotection of carboxylic esters of β-lactam homologues. Cleavage of p-methoxybenzyl, diphenylmethyl, and tert-butyl esters effected by a phenolic matrix

Sigeru Torii; Hideo Tanaka; Masatoshi Taniguchi; Yutaka Kameyama; Michio Sasaoka; Takashi Shiroi; Ryo Kikuchi; Ichiro Kawahara; Akihiro Shimabayashi; Shigemitsu Nagao

Bulletin of the Chemical Society of Japan | 1985

Synthesis of Dicyclopropylideneethane and Its Reaction with Some Dienophiles

Takashi Tsuji; Ryo Kikuchi; Shinya Nishida

Archive | 1986

PROCESS FOR PRODUCING BETA-LACTAM DERIVATIVES

Michio Sasaoka; Norio Saito; Takashi Shiroi; Shigemitsu Nagao; Ryo Kikuchi; Yutaka Kameyama

Bulletin of the Chemical Society of Japan | 1995

Electrooxidative Fission of Carbon–Carbon Double Bond in a K2OsO2(OH)4/HIO4 Double Mediatory System

Hideo Tanaka; Ryo Kikuchi; Masakatsu Baba; Shigeru Torii

Archive | 1989

Method for production of β-lactam derivatives

Michio Sasaoka; Nori Saito; Takashi Shiroi; Shigemitsu Nagao; Ryo Kikuchi; Yutaka Kameyama

Archive | 1989

Method for production of 3-exomethylenecepham derivatives

Sigeru Torii; Hideo Tanaka; Masatoshi Taniguchi; Michio Sasaoka; Norio Saito; Takashi Shiroi; Shigemitsu Nagao; Ryo Kikuchi; Yutaka Kameyama

Bulletin of the Chemical Society of Japan | 1996

Synthesis of 3-Chloro-Δ3-cephem-4-carboxylate by Addition/Cyclization of Allenecarboxylate. Copper(II)-Promoted Aerobic Oxidation of Arenesulfinic Acids

Hideo Tanaka; Ryo Kikuchi; Sigeru Torii

Archive | 1992

Use of halogenated beta-lactam compounds for producing 3-hydroxycephem derivatives

Yutaka Kameyama; Ryo Kikuchi; Mitio Sasaoka; Takashi Shiroi; Hideo Tanaka; Masatoshi Senrimidorigaoka Taniguchi; Shigeru Torii

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Hideo Tanaka

Chiba University

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Yutaka Kameyama

Okayama University

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Takashi Shiroi

Okayama University

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Michio Sasaoka

Okayama University

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Sigeru Torii

Okayama University

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Shigeru Torii

Okayama University

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Masatoshi Taniguchi

Okayama University

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Shigemitsu Nagao

Hokkaido University

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Norio Saito

Okayama University

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Kouichi Sorajo

Okayama University

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