| 摘要 |
A benzopyran derivative represented by formula <CHEM> wherein: R1 and R2 each represents a hydrogen atom, a lower alkyl group, a substituted or unsubstituted cyclic alkyl group, a mono- or di-lower alkylamino group, a substituted or unsubstituted cyclic amino group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; Y1 and Y2 each represents a hydrogen atom, a lower alkyl group, a halogen atom or a trihalomethyl group; Z represents a carboxyl group, a lower alkoxycarbonyl group, a tetrazolyl group, a hydroxyl group or -CONR3R4 wherein R3 and R4 each represents a hydrogen atom or a lower alkyl group; n represents an integer of from 1 to 6; and the bond @ between the 2- and 3-positions represents a single bond or a double bond; provided that a combination wherein Y1, Y2, and R2 each represents a hydrogen atom, R1 represents a phenyl group, n represents 1, Z represents a carboxyl group or an alkoxycarbonyl group, and the bond @ represents a double bond, and a combination wherein Y1, Y2, and R1 each represents a hydrogen atom, R2 represents a phenyl group, n represents 1, Z represents a carboxyl group or an alkoxycarbonyl group, and the bond @ represents a double bond are excluded, and pharmaceutically acceptable salts thereof are disclosed. These compounds have uricosuric activity, diuretic activity and antihypertensive activity, and are useful as pharmaceuticals. |
