Synthesis and vasorelaxant activity of 2-fluoromethylbenzopyran potassium channel openers
摘要:
The synthesis and vasorelaxant activity of 2-fluoromethylbenzopyran potassium channel openers are described. These (2-fluoromethyl) derivatives displayed smooth muscle relaxant activities comparable to or more potent than the corresponding 2-methyl analogues. (C) 1998 Elsevier Science Ltd. All rights reserved.
Synthesis and vasorelaxant activity of 2-fluoromethylbenzopyran potassium channel openers
摘要:
The synthesis and vasorelaxant activity of 2-fluoromethylbenzopyran potassium channel openers are described. These (2-fluoromethyl) derivatives displayed smooth muscle relaxant activities comparable to or more potent than the corresponding 2-methyl analogues. (C) 1998 Elsevier Science Ltd. All rights reserved.
Novel benzopyran and benzoxazine derivatives represented by the general formula: ##STR1## wherein R.sub.1 and R.sub.2 represent a lower haloalkyl group, R.sub.3 represents a hydrogen atom, etc., R.sub.4 represents a heterocyclic group or A--O-- wherein A represents a cyclic structure, etc., R.sub.5 and R.sub.6 represent a lower haloalkyl, X represents .dbd.N--, N.fwdarw.O, etc, are disclosed. These compounds exhibit K.sup.+ channel opening activating and can be widely used as an anti-asthma drug, an anti-epilepsy drug, etc.
Benzopyran and benzoxazine derivatives represented by general formula (I) and the use thereof as a K⁺ channel activator for treating asthma, epilepsy and so forth, wherein R₁ and R₂ represent each lower haloalkyl; R₃ represents hydrogen, etc.; R₄ represents a heterocyclic group, A-O- (A being a ring structure), etc.; R₅ and R₆ represent each lower haloalkyl; and X represents =N-, N->O or (II) (R₇ and R₈ being each hydrogen, hydroxyl, etc.).