Compounds of Formula I: ##STR1## where R.sup.5 is a group selected from Formulae (a), (b), (c) and (d): ##STR2## and the pharmaceutically acceptable salts and N-oxides thereof, are .alpha..sub.1 -adrenergic receptor antagonists useful for the treatment of diseases involving directly or indirectly an obstruction of the lower urinary tract, such as benign prostatic hyperplasia.
公式I的化合物:##
STR1## 其中R.sup.5是从公式(a),(b),(c)和(d)中选择的基团:##
STR2##以及其药学上可接受的盐和N-
氧化物,是治疗直接或间接涉及下泌尿道阻塞的疾病,例如良性前列腺增生的α1-
肾上腺素受体
拮抗剂。