Kazuyuki Umemura

Asymmetric alkylation of .beta.-keto esters with optically active sulfonium salts

Kazuyuki Umemura, Haruo Matsuyama, Nobuko Watanabe et al. · The Journal of Organic Chemistry · 1989 · 55 citations

Enantioselective Synthesis, Engineering, Chemical Analysis +14

Alkylation of Several Nucleophiles with Alkylsulfonium Salts

Kazuyuki Umemura, Haruo Matsuyama, Nobumasa Kamigata · Bulletin of the Chemical Society of Japan · 1990 · 35 citations

Biochemistry, Natural Sciences, Alkylsulfonium Salts +8

A new synthesis of 2,3,4,6-tetra-O-benzyl-d-glucopyranosylidene acetals, using trimethylsilyl trifluoromethanesulfonate as the catalyst

Shigeomi Horito, Katsuji Asano, Kazuyuki Umemura et al. · Carbohydrate Research · 1983 · 33 citations

Chemical Engineering, Cross-coupling Reaction, Engineering +9

Convenient Synthesis of the Central 3,6-Di(2-thiazolyl)-2-(4-thiazolyl)pyridine Skeleton of a Macrocyclic Antibiotic, GE 2270 A

Kazuo Okumura, Hiroyuki Saito, Chung‐gi Shin et al. · Bulletin of the Chemical Society of Japan · 1998 · 30 citations

Engineering, Heterocyclic, Macrocyclic Antibiotic +11

Convenient Synthesis of Fragment E of Antibiotic, Nosiheptide

Chung‐gi Shin, Yasuhiro Yamada, Keiichiro Hayashi et al. · Heterocycles · 1996 · 29 citations · Full text

Srreptomyces Acruosus, Medicinal Chemistry, Bioorganic Chemistry +12