Hokuriku Pharmaceutical Co., Ltd.

Yasuo Itho

Hideo Kato

Eiichi Koshinaka

Nobuo Ogawa

Kagari Yamagishi

Hiroyuki Nishino

Kazuya Mitani

Sakae Kurata

Certain 4'-alkyl-2-methyl-3-pyrrolidinopropiophenones, acid addition salts thereof, their method of preparation, pharmaceutical compositions embodying the same, and a method of muscle relaxation therewith, are disclosed.

Derivatives of 3-pyrrolidinopropiophenone and a process for preparation

Derivatives of N-substituted flavone-8-carboxamides represented by general formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom, a methyl group or an ethyl group, R.sub.2 represents a hydrogen atom, a lower alkyl group, a lower alkoxyl group, a halogen atom or a nitro group, R.sub.3 represents a hydrogen atom or a lower alkyl group, k represents 0, 1, 2, or 3, m represents 0 or 1; X and Y, which must be different, represent a hydrogen atom or methyl group. A represents an amino group having the formula ##STR2## wherein, R.sub.4 and R.sub.5, which may be the same or different, represent a lower alkyl group or a cyclic amino group together with the nitrogen atom and with or without an oxygen atom, R.sub.6 represents a lower alkyl group and n represents 2 or 3, are disclosed, as well as pharmaceutical compositions thereof and method of treating therewith. The N-substituted flavone-8-carboxamides derivatives are useful as agents for treatment of dysurea.

N-substituted flavone-8-carboxamides

1-(3,4,5-Trimethoxycinnamoyl)-4-aminocarbonylethyl-substituted piperazine derivatives represented by general formula (I): ##STR1## wherein R is a straight- or branched-chain alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 5 to 7 carbon atoms, and pharmaceutically acceptable acid addition salts thereof are disclosed. The 1-(3,4,5-trimethoxycinnamoyl)-4-aminocarbonylethyl-substituted piperazine derivatives are useful as vasodilator agents.

1-(3,4,5-Trimethoxycinnamoyl)-4-alkylaminocarbonylethyl piperazines

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Katsuyamashi, Japan

Yasuo Itho