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Seigo Sawada

Showa University

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Publication

Featured researches published by Seigo Sawada.

Chemical & Pharmaceutical Bulletin | 1991

Chemical Modification of an Antitumor Alkaloid Camptothecin: Synthesis and Antitumor Activity of 7-C-Substituted Camptothecins.

Seigo Sawada; Kenichiro Nokata; Tomio Furata; Teruo Yokokura; Tadashi Miyasaka

Chemical & Pharmaceutical Bulletin | 1994

Synthesis and antitumor activity of 20(S)-camptothecin derivatives. A-ring-substituted 7-ethylcamptothecins and their E-ring-modified water-soluble derivatives

Takashi Yaegashi; Seigo Sawada; Hiroshi Nagata; Tomio Furuta; Teruo Yokokura; Tadashi Miyasaka

Chemical & Pharmaceutical Bulletin | 1993

Chemical Modification of an Antitumor Alkaloid, 20(S)-Camptothecin : E-Lactone Ring-Modified Water-Soluble Derivatives of 7-Ethylcamptothecin

Seigo Sawada; Takashi Yaegashi; Tomio Furuta; Teruo Yokokura; Tadashi Miyasaka

Chemical & Pharmaceutical Bulletin | 1992

Chemical Modification of an Antitumor Alkaloid, 20(S)-Camptothecin : Glycosides, Phosphates and Sulfates of 7-Ethyl 10-hydroxycamptothecin

Takashi Yaegashi; Kenichiro Nokata; Seigo Sawada; Tomio Furuta; Teruo Yokokura; Tadasi Miyasaka

Chemical & Pharmaceutical Bulletin | 1993

Chemical modification of antitumor alkaloids, 20(S)-camptothecin and 7-ethylcamptothecin: reaction of the E-lactone ring portion with hydrazine hydrate.

Takashi Yaegashi; Seigo Sawada; Tomio Furuta; Teruo Yokokura; Kentaro Yamaguchi; Tadashi Miyasaka

Chemical & Pharmaceutical Bulletin | 1977

Studies of Heterocyclic Compounds. XVII. Synthesis of 3-(Substituted-phenyl)-thiazolo [2, 3-b] benzothiazolium Perchlorates

Seigo Sawada; Tadashi Miyasaka; Kiichi Arakawa

ChemInform | 1981

A SELECTIVE ONE-STEP INTRODUCTION OF HYDROXYLIC FUNCTIONS AT THE C-5 AND C-7 POSITIONS OF 20(S)-CAMPTOTHECIN, AN ALKALOID HAVING ANTITUMOR ACTIVITY

Tadashi Miyasaka; Seigo Sawada; Kenichiro Nokata

Chemical & Pharmaceutical Bulletin | 1978

Studies of heterocyclic compounds. XVIII. Synthesis of 1-(substitutedphenyl)-2,3-tetramethylenepyrrolo[2,1-b]benzothiazoles.

Seigo Sawada; Tadashi Miyasaka; Kiichi Arakawa

Archive | 1998

Camptothecin-derivate Camptothecin derivatives

Tomio Furuta; Takanori Minato-ku Ogawa; Seigo Sawada; Takashi Yaegashi

ChemInform | 1981

CHEMICAL MODIFICATION OF ANTITUMOR ALKALOID CAMPTOTHECIN. ACID-CATALYZED CONVERSION OF 7-HYDROXYMETHYLCAMPTOTHECIN INTO THE ALDEHYDE AND ITS ACETALS

Tadashi Miyasaka; Seigo Sawada; Kenichiro Nokata

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Tadashi Miyasaka

Showa University

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Takashi Yaegashi

Nagasaki University

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Teruo Yokokura

Showa University

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Tomio Furuta

Showa University

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Kenichiro Nokata

Showa University

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Kiichi Arakawa

Showa University

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Hiroshi Nagata

Showa University

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Kentaro Yamaguchi

Tokushima Bunri University

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Tadasi Miyasaka

Showa University

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Tomio Furata

Showa University

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