Acetylenes of the following formula (I): ##STR1## wherein Y, m, R.sup.1, R.sup.2, R.sup.3, n and R.sup.4 are defined herein and R.sup.5 is hydrogen, alkyl, cycloalkyl or substituted alkyl are useful vasodilators and antihypertensives.
以下式子的
乙炔类化合物(I):##STR1## 其中Y,m,R.sup.1,R.sup.2,R.sup.3,n和R.sup.4的定义如本文所述,R.sup.5为氢,烷基,环烷基或取代烷基,具有血管扩张和降压作用。