Arylpyrazole derivatives as platelet aggregation inhibitors.

摘要

Compounds of the formula <CHEM> wherein R<1> and R<2> each are independently hydrogen or phenyl, provided that R<1> and R<2> may not both be hydrogen; m is an integer from 3 to 9; n is an integer from 0 to 3 and the sum of m+n is an integer from 5 to 12; Z is O, S, SO, SO2, -CH=CH- or a direct bond; A is <CHEM> R<3> is hydrogen or C1-6 alkyl; and R<4> is hydrogen, C1-4 alkyl or methylsulfonyl; and pharmaceutically acceptable salts or hydrates thereof are novel inhibitors of adenosine diphosphate and collagen-induced aggregation of human platelet-rich plasma and are particularly useful as inhibitors of mammalian blood platelet aggregation.