Tanabe Seiyaku Company, Limited

Tanabe Seiysku Co., Ltd.

Yutaka Saiga

Ikuo Iijima

Mamoru Matsumoto

Yuzo Matsuoka

Toshikazu Miyagishima

Masakatsu Ozeki

Kunio Nosaka

Tohru Ishizuka

Koichi Homma

A novel benzofuran derivative of the formula: ##STR1## wherein R.sup.1 is hydrogen atom, a lower alkoxy group or a halogen atom, one of R.sup.2 and R.sup.3 is a lower alkyl group and the other is a lower alkyl group or a phenyl-lower alkyl group, or R.sup.2 and R.sup.3 combine together with adjacent nitrogen atom to form a heteromonocyclic group, Ring A is a substituted or unsubstituted phenyl group, Y is oxygen atom or sulfur atom and n is an integer of 2 or 3, or a pharmaceutically acceptable salt thereof is disclosed. The compound (I) or a pharmaceutically acceptable salt thereof has a potent inhibitory activity against reflective contractions of urinary bladder.

Benzofuran derivative and processes for preparing the same

Novel benzo-furan(or -thiophene) derivative of the formula: ##STR1## wherein R.sup.1 is hydrogen atom, a lower alkyl group, a cycloalkyl group, a phenyl-lower alkyl group or a substituted or unsubstituted phenyl group, R.sup.2 is hydrogen atom, a lower alkyl group, an acyl group or phenyl group, R.sup.3 is hydrogen atom, a halogen atom, nitro group, a lower alkoxy group, amino group or an acylamino group, R.sup.4 is a group of the formula: ##STR2## A is a lower alkylene group optionally substituted with hydroxy group, B is single bond or a lower alkylene group, one of R.sup.5 and R.sup.6 is hydrogen atom or a lower alkyl group and the other is a lower alkyl group or a phenyl-lower alkyl group, or R.sup.5 and R.sup.6 combine together with adjacent nitrogen atom to form a heteromonocyclic group, R.sup.7 is a lower alkyl group, X is oxygen atom or sulfur atom, Y is oxygen atom, imino group, a lower alkylimino group or a phenyl-lower alkylimino group and a salt thereof are disclosed. Said compound (I) and a salt thereof have a potent inhibitory activity against reflective contraction of urinary bladder.

Benzo-furan derivative

Novel thioketene derivatives of the formula: ##STR1## wherein R.sup.1 is hydrogen atom, an alkyl group, a lower alkenyl group, a phenyl group or a group of the formula: --B--Y;

3-(1,3-dithiol-2-ylidene)-2,4-dioxopyrrolidines, -piperidines, and

Novel tetrahydro-.beta.-carboline derivatives of the formula: ##STR1## wherein R.sup.1 is carboxyl, a lower alkoxycarbonyl, carbamoyl, an N,N-di-lower alkylcarbamoyl, an N-(phenyl-substituted lower alkylidenamino)carbamoyl, a [N,N-di(lower alkyl)amino]-lower alkyl, or a nitrogen-containing monocyclic heterocyclic group;

Tetrahydro-.beta.-carboline derivatives and treatment of liver diseases

Tetrahydro-.beta.-carboline derivative of the formula: ##STR1## wherein R.sup.2 is lower alkyl, and either (A)

Tetrahydro-.beta.-carboline derivatives

Tetrahydro-.beta.-carboline derivatives of the formula: ##STR1## wherein R.sup.1 is hydrogen atom, a lower alkyl group, a cycloalkyl group, phenyl group or a hydroxy-substituted lower alkyl group, R.sup.2 is hydrogen atom, an alkyl group, or a group of the formula: --(CH.sub.2).sub.m Y, Y is thienyl or a substituted or unsubstituted phenyl group, and m and n are an integer of 1 or 2, which have excellent alleviating, curing and preventing hepatic damages and are useful as a therapeutic or prophylactic agent for hepatic diseases, and a process for the preparation of said compounds.

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Ageo, Japan

Yutaka Saiga