Benzopyran and benzoxazine derivatives

Details Benzopyran and benzoxazine derivatives Benzopyran and benzoxazine derivatives

C - Chemistry, Metallurgy

07

D

C07D 405/02 (2006.01) A61K 31/33 (2006.01) C07D 265/14 (2006.01) C07D 311/22 (2006.01) C07D 311/58 (2006.01) C07D 311/68 (2006.01) C07D 405/04 (2006.01) C07D 405/12 (2006.01) C07D 413/04 (2006.01) C07D 417/04 (2006.01)

Patent

CA 2142471

Novel benzopyran and benzoxazine derivatives represented by the general formula: Image wherein R1 and R2 represent a lower haloalkyl group, R3 represents a hydrogen atom, etc., R4 represents a heterocyclic group or A-O- wherein A represents a cyclic structure, etc., R5 and R6 represent a lower haloalkyl, X represents =N-, N?O, etc, are disclosed. These compounds exhibit K+ channel opening activating and can be widely used as an anti-asthma drug, an anti-epilepsy drug, etc.

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