This invention relates to novel compounds, their synthesis and use as selective .alpha..sub.1a adrenergic receptor antagonists. One application of the compounds is in the treatment of benign prostatic hyperplasia. The compounds are selective in their ability to relax smooth muscle tissue enriched in the .alpha..sub.1a receptor subtype without at the same time inducing hypotension. One such tissue is found surrounding the urethral lining. Therefore, one utility of the instant compounds is to provide acute relief to males suffering from benign prostatic hyperplasia, by permitting less hindered urine flow. Another utility of the instant compounds is provided by combination with a human 5-alpha reductase inhibitory compound, such that both acute and chronic relief from the effects of benign prostatic hyperplasia are achieved.
本发明涉及新型化合物、它们的合成和作为选择性α1a
肾上腺素受体拮抗剂的用途。该化合物的应用之一是治疗良性前列腺增生症。这些化合物在其放松富含α1a受体亚型的平滑肌组织的能力上具有选择性,同时不引起低血压。这种组织被发现围绕尿道内膜。因此,该化合物的一个用途是为男性良性前列腺增生症患者提供急性缓解,从而使尿液流动更加顺畅。该化合物的另一个用途是与人类5α-还原酶
抑制剂化合物结合,从而实现对良性前列腺增生症的急性和慢性缓解。