9-Substituted-4-oxopyrido[1,2-.alpha.]pyrimidine-3-carboxylic acids and related compounds are disclosed. In addition, their methods of preparation and use as central nervous system depressants and hypotensive agents are taught.
                            本发明公开了9-取代-4-氧代
吡啶[1,2-α]
嘧啶-3-
羧酸及其相关化合物。此外,本发明还教授了它们的制备方法以及作为中枢神经系统
抑制剂和降压剂的用途。