New spiro compounds of the formula: ##STR1## wherein n is an integer of 1 to 4, and X is halogen, lower alkyl, nitro, amino which may be substituted, hydroxyl which may be substituted, acyl, carboxyl, lower alkoxycarbonyl, carbamoyl which may be substituted, sulfamoyl which may be substituted, lower alkylthio or lower alkylsulfonyl, or two of X at the 5- and 6-positions together form --CH.dbd.CH--CH.dbd.CH--, exhibit inhibitory activity to thrombocyte aggregation and are useful for the prophylaxis or treatment of cardiovascular disturbance such as thrombosis.
新的
螺环化合物的公式:## STR1##
其中n是1到4的整数,X是卤素,低级烷基,硝基,
氨基(可能被取代),羟基(可能被取代),酰基,羧基,低级烷氧羰基,
氨基甲酰基(可能被取代),磺酰胺基(可能被取代),低级烷基
硫基或低级烷基磺酰基,或X在5-和6-位置上的两个共同形成--CH.dbd.CH--CH.dbd.CH--,具有抑制血小板聚集的活性,并且可用于预防或治疗心血管紊乱,如血栓形成。