Heterocyclic acids and esters useful as inhibitors of mammalian blood platelet aggregation characterized by Formula I or II are disclosed. HET.sub.1 -(CH.sub.2).sub.n CO.sub.2 R (I) ##STR1## Formula I compounds are those wherein n is 6-9, R is hydrogen, lower alkyl or an alkali metal ion, and HET.sub.1 is the heterocyclic radical 4,5-diphenyl-2-thiazoyl. Formula II compounds are those wherein R.sub.1 is hydrogen, lower alkyl or an alkali metal ion, and the radical --OCH.sub.2 CO.sub.2 R is attached in the 3 or 4 ring position; and HET.sub.2 is the heterocyclic radical 4,5-diphenyl-2-thiazoyl.
本发明涉及一种用于抑制哺乳动物血小板聚集的杂
环酸和酯,其特征为具有式I或II。 HET.sub.1-(CH.sub.2).sub.nCO.sub.2R(I)##STR1##式I化合物中,n为6-9,R为氢,低级烷基或碱
金属离子,HET.sub.1为杂环基4,5
-二苯基-2-
噻唑基。式II化合物中,R.sub.1为氢,低级烷基或碱
金属离子,基团--OCH.sub.2CO.sub.2R连接在3或4环位置;HET.sub.2为杂环基4,5
-二苯基-2-
噻唑基。