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Masao Yaso

Hokkaido University

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Publication

Featured researches published by Masao Yaso.

Nucleosides, Nucleotides & Nucleic Acids | 1992

New neplanocin analogues. II: Enzymatic one-step synthesis and antitumor activity of 6'-(3-sn-phosphatidyl)neplanocin a derivatives

Satoshi Shuto; Hiromichi Ito; Takumi Obara; Keiji Nakagami; Masao Yaso; Satoshi Yaginuma; Masatoshi Tsujino; Tetsu Saito; Akira Matsuda; Tohru Ueda

Abstract A novel series of neplanocin analogues, 6′-(3-sn-phosphatidyl)neplanocin As bearing a variety of fatty acyl or alkyl residues in the glyceride moiety (2b-2h), were synthesized by means of phospholipase D-catalyzed transphosphatidylation. Among them, 2b, 2c, and 2e each exhibited significant antitumor effect against P388 leukemia in mice, which evidently surpassed that of parent compound neplanocin A.

Chemical & Pharmaceutical Bulletin | 1975

Studies on bredinin. III. Chemical synthesis of bredinin. (A novel imidazole nucleoside).

Mitsuo Hayashi; Takao Hirano; Masao Yaso; Kimio Mizuno; Tohru Ueda

Archive | 1988

6-Substituted alkoxy-2-oxo-1, 2-dihydroquinoxaline derivatives

Yukio Suzuki; Masao Yaso; Katumi Nisimura; Kenzi Saeki; Noriyasu Takayanagi; Tetsu Saito; Eiichi Hayashi

Archive | 1991

Biphenyl 5,5'-bis-alkanoic acid derivatives, their production and use thereof

Yukio Suzuki; Kouichi Kuno; Motoshi Shoda; Masao Yaso; Satoshi Yaginuma; Akira Asahi

Archive | 1990

6'-deoxy-6'-halogenoneplanosin A and its production

Satoshi Shuto; Takumi Obara; Hiromichi Itoh; Takehiro Koshio; Tatsuro Fujiwara; Masao Yaso

Archive | 1989

1-substituted alkyl-2-oxo-hexahydroquinoxaline derivatives

Masao Yaso; Yukio Suzuki; Kensuke Shibata; Eiichi Hayashi

Archive | 1993

2-ALKOXY-5,6,7,8-TETRAHYDROQUINOXALINE DERIVATIVE, PROCESS FOR PRODUCING THE SAME, AND USE THEREOF.

Hideyuki Watanabe; Masao Yaso; Daisuke Mochizuki

Archive | 1992

BIPHENYL-5,5'-BIS-ALKANOIC ACID DERIVATIVES, THEIR PRODUCTION AND ALDOSE REDUCTASE INHIBITORS CONTAINING THE SAME

Yukio Suzuki; Kouichi Kuno; Motoshi Shoda; Masao Yaso; Satoshi Yaginuma; Akira Asahi

Archive | 1993

UN PROCEDIMIENTO PARA PREPARAR UN COMPUESTO QUE ES UN DERIVADO DE PIRAZINA.

Masao Yaso; Yukio Suzuki; Kensuke Shibata; Daisuke Mochizuki; Eiichi Hayashi

Archive | 1993

UN PROCEDIMIENTO PARA PREPARAR UNA COMPOSICION FARMACEUTICA.

Eiichi Hayashi; Noriyasu Takayanagi; Katsumi Nishimura; Masao Yaso; Yukio Suzuki

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Yukio Suzuki

Asahi Kasei

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Tetsu Saito

Asahi Kasei

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Kensuke Shibata

Okayama University

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Satoshi Yaginuma

Gunma University

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Daisuke Mochizuki

Hokkaido University

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Satoshi Shuto

University of Shizuoka

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Takumi Obara

Hokkaido University

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Tohru Ueda

Hokkaido University

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Akira Matsuda

Juntendo University

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Hideyuki Watanabe

Asahi Kasei

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