The compounds of formula (I) wherein R1 is a heterocyclic residue selected form pyridil and thiazolyl, where said heterocyclic residue may optionally be substituted with lower alkyl or lower alkenyl; and pharmaceutically acceptable salts thereof, are inhibitors of endothelin receptors and can therefore be used for the treatment of disorders which are associated with abnormal vascular tone and endothelial dysfunction; and the corresponding intermediates of formulae (III) and (V).
化合物的
化学式为(I),其中R1是从
吡啶基和
噻唑基中选择的杂环残基,所述杂环残基可以选择性地用较低的烷基或烯基取代;以及其药学上可接受的盐,是内皮素受体的
抑制剂,因此可用于治疗与异常血管张力和内皮功能障碍相关的疾病;以及
化学式(III)和(V)的相应中间体。