Sanwa Kagaku Kenkyusho Co., Ltd.

Keiko Hasegawa

Masayasu Kurono

Kiichi Sawai

Takashi Ito

Ryoichi Unno

Hiromoto Kimura

Mitsuru Oka

Noboru Kuboyama

Shinichi Ikeda

Shunshuke Ito

A glycyrrhetic acid derivative of the formula ##STR1## wherein X and Y are hydrogen atom, respectively or X is oxygen atom together with Y, A.sub.1 is methylene or carbonyl radical, A.sub.2 is hydrogen atom, cyano, carbamoyl, carboxyl radical or alkoxycarbonyl group, m and n are an integer, respectively, R.sub.1 is a radical of ##STR2## in which R.sub.2 is an alkyl, alkenyl group, phenyl radical or a substituted phenyl radical, A.sub.3 is S, O or NH, and l is an integer, a process for the preparation of the derivatives, and use of the derivative as a pharmaceutical agent.

Glycyrrhetic acid derivatives and use thereof

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Inazawa, Japan

Keiko Hasegawa