Sanwa Kagaku Kenkyusho Co., Ltd.

Nobuyuki Asaeda

Toshinao Usui

Takuji Kakigami

Yutaka Baba

Yoshiro Ozeki

Katsura Tsukamoto

Nobuyuki Itoh

There are disclosed a benzopyrancarboxamide derivative of the formula ##STR1## wherein R.sup.1 is hydrogen atom or a lower alkyl group; R.sup.2 is hydrogen atom, a lower alkyl group, halogen atom, an amino radical or an acylamino group; R.sup.3 is hydrogen atom, a lower alkyl group, a lower alkoxy group or halogen atom; dotted line is a possible double bond; and n is an integer of 1-5, and a pharmacologically acceptable salt of the compound, a process for the preparation of the compound and salt as well as use thereof.

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Nagoya, Japan

Nobuyuki Asaeda