Novel benzopyran derivatives

Details Novel benzopyran derivatives Novel benzopyran derivatives

C - Chemistry, Metallurgy

07

D

C07D 311/58 (2006.01) A61K 31/35 (2006.01) C07D 405/04 (2006.01) C07D 493/10 (2006.01)

Patent

CA 2128603

-59- NOVEL BENZOPYRAN DERIVATIVES ABSTRACT: Benzopyran derivatives represented by formula (I): Image (I) wherein X represents =O, S, =N-Z, etc. (Z represents a lower alkyl group, etc.); Y represents a substituted amino group, an alkoxy group, an alkylthio group, etc., and R1, R2, R3, R4 and R5 each represents a hydrogen atom, a lower alkyl group, etc, are disclosed. The benzopyran derivative exhibit K channel opening activities and are widely applicable as antiasthmatics, antiepileptics, and the like.

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