The invention concerns pharmaceutically useful compounds of the formula I, in which A.sup.1, A.sup.2, A.sup.3, A.sup.4, B.sup.1, m, Ar, W, X, Y, Z and R.sup.1 have any of the meanings defined herein, and their pharmaceutically acceptable salts, and pharmaceutical compositions containing them. The novel compounds possess endothelin receptor antagonist activity and are useful, for example, in the treatment of diseases or medical conditions in which elevated or abnormal levels of endothelin play a significant causative role. The invention further concerns processes for the manufacture of the novel compounds and the use of the compounds in medical treatment.
本发明涉及公式I的具有药用价值的化合物,其中A.sup.1、A.sup.2、A.sup.3、A.sup.4、B.sup.1、m、Ar、W、X、Y、Z和R.sup.1具有本说明书中定义的任何含义,并且它们的药学上可接受的盐以及含有它们的制药组合物。这些新化合物具有内皮素受体拮抗剂活性,并且可用于治疗内皮素
水平升高或异常引起的疾病或医疗状况。本发明还涉及制造这些新化合物的方法以及将这些化合物用于医疗治疗的用途。