申请人:Pfizer Inc.
公开号:US04783467A1
公开(公告)日:1988-11-08
A series of novel heterocyclic-substituted 1,2,3,5-tetrahydroimidazo(2,1-b)quinazolin-2-(1H)-one compounds have been prepared, including their pharmaceutically acceptable salts, wherein the heterocyclic ring moiety is an optionally substituted 5- or 6-membered aromatic heterocyclic group attached to the 6-, 7-, 8- or 9-positions of the aforesaid tetrahydroquinaxolinone ring. These particular compounds are useful in therapy as highly potent inotropic and therefore, are of value in the treatment of various cardiac conditions. Preferred member compounds include 7-(2,4-dimethylimidaxol-1-yl)-9-methyl-1,2,4,5,-tetrahydroimidazo (2,1-b)quinazolin-2-(1H)-one, 3,9-dimethyl-7-(2,4-dimethylimidazol-1-yl) -1,2,3,5-tetrahydroimidazo(2,1-b)quinazolin-2-(1H)-one and 9-methyl-7 -(1,2,4-triazol-4-yl)-1,2,3,5-tetrahydroimidazo(2,1-b)quinazolin-2-(1H)-on e, respectively. Methods for preparing these compounds from known starting materials are provided.
已合成一系列新颖的杂环取代的1,2,3,5-四氢咪唑(2,1-b)喹唑啉-2-(1H)-酮化合物,包括它们的药学上可接受的盐,其中杂环环基是一个可选择取代的连接到上述四氢喹唑啉酮环的6-、7-、8-或9-位置的5-或6-成员芳香杂环基。这些特殊化合物在治疗中具有高效的正性肌力作用,因此在治疗各种心脏疾病方面具有价值。优选的化合物包括7-(2,4-二甲基咪唑-1-基)-9-甲基-1,2,4,5-四氢咪唑(2,1-b)喹唑啉-2-(1H)-酮,3,9-二甲基-7-(2,4-二甲基咪唑-1-基)-1,2,3,5-四氢咪唑(2,1-b)喹唑啉-2-(1H)-酮和9-甲基-7-(1,2,4-三唑-4-基)-1,2,3,5-四氢咪唑(2,1-b)喹唑啉-2-(1H)-酮。提供了从已知起始材料制备这些化合物的方法。