4-aminobenzopyran derivatives

C - Chemistry – Metallurgy – 07 – D

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Details

C07D 311/70 (2006.01) A61K 31/353 (2006.01) A61P 9/06 (2006.01)

Patent

CA 2436438

This invention relates to benzopyran derivatives of the formula (I)wherein, R1 and R2 represent each independently a C1-6alkyl group, etc, R3 represents a hydroxyl group, etc, R4 represents a hydrogen atom, etc, R6 represents a hydrogen atom, R7 represents a hydrogen atom, etc, X is absent, or represents C=O, etc, R8 represents a hydrogen atom, a C1-6alkyl group, etc, R9 represents a hydrogen atom or a nitro group, when R9 represents a nitro group, Y represents a C4-8alkylene group, -(CH2)m-CR11R12-(CH2)n- or -(CH2)o-O-(CH2)p-, R5 represents a hydrogen atom, an amino group, a C1-6alkoxy group, a C1- 6alkylthio group, a C1-6alkylamino group, a C1-6 alkoxycarbonylamino group, etc, or pharmaceutically acceptable salts thereof. These compounds are useful as an antiarrhythmic agent.

L'invention porte sur des dérivés d'aminobenzopyran représentés par la formule (I) dans laquelle R?1¿ et R?2¿ représentent chacun indépendamment un groupe C¿1-6? alkyle, etc, R?3¿ représente un groupe hydroxyle, etc. R?6¿ représente un atome hydrogène, R?7¿ représente un atome hydrogène, etc. X est absent ou représente C=O, etc, R?8¿ représente un atome hydrogène, un groupe C¿1-6 ?alkyle, etc. R?9¿ représente un atome hydrogène ou un groupe nitro, Y représente un groupe C¿4-8? alkylène, -(CH¿2?)¿m?-CR?11¿R?12¿-(CH¿2?)¿n?- ou (CH¿2?)¿o?-O-(CH¿2?)¿p?-, R?5¿ représente un atome hydrogène un groupe amino, un groupe C¿1-6 ?alkoxy, un groupe C¿1-6 ?alkylthio, un groupe C¿1-6 ?alkylamino, un groupe C¿1-6 ?alkoxycarbonylamino, etc. ou des sels pharmaceutiquement acceptables de ces composés. Ces composés sont utilisés en tant qu'agents antiarythmiques.

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