The present invention relates to a compound of the formula and the pharmaceutically acceptable salts thereof wherein W is a bicyclic heterocyclic ring system. The compounds are .alpha.-1 adrenergic antagonists and are useful in the treatment of BPH; also disclosed are .alpha.-1 antagonist compositions and a method for antagonizing .alpha.-1 adrenoreceptors and treating BPH.
本发明涉及一种公式及其药学上可接受的盐的化合物,其中W为双环杂环环系统。这些化合物是α-1
肾上腺素受体拮抗剂,可用于治疗前列腺增生症;此外,还披露了α-1拮抗剂组合物和拮抗α-1
肾上腺素受体和治疗前列腺增生症的方法。