This invention is directed to dihydropyrimidine compounds which are selective antagonists for human .alpha..sub.1C receptors and which have the structure: ##STR1## wherein A is aryl; R.sub.1, R.sub.2 and R.sub.3 are alkyl or heteroalkyl; R.sub.4 is heterocyclic alkyl; and X is S, O or NR.sub.3. This invention also relates to use of these compounds for the treatment of benign prostatic hyperplasia and other diseases where antagonism of the human .alpha..sub.1C receptor is useful. The invention further provides pharmaceutical compositions comprising a therapeutically effective amount of such a compound and a pharmaceutically acceptable carrier.
这项发明涉及选择性拮抗人类α1C受体的二氢
嘧啶化合物,其结构为:##STR1##其中A为芳基;R.sub.1、R.sub.2和R.sub.3为烷基或杂原子烷基;R.sub.4为杂环烷基;X为S、O或NR.sub.3。该发明还涉及利用这些化合物治疗良性前列腺增生和其他需要拮抗人类α1C受体的疾病。该发明还提供包含该化合物的治疗有效量和药用可接受载体的药物组合物。