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.
一系列新型杂环取代的1,2,3,5-四氢咪唑并(2,1-b)喹唑啉-2-(1H)-酮化合物已经制备出来,包括它们的药用可接受的盐。其中,杂环环基是一个可选取代的5-或6-成员芳香杂环基,附加在上述四氢喹唑啉酮环的6、7、8或9位。这些特定的化合物在治疗中非常有效,因此对于治疗各种心脏病有价值。首选的成员化合物包括7-(2,4-二甲基咪唑-1-基)-9-甲基-1,2,4,5-四氢咪唑并(2,1-b)喹唑啉-2-(1H)-酮、3,9-二甲基-7-(2,4-二甲基咪唑-1-基)-1,2,3,5-四氢咪唑并(2,1-b)喹唑啉-2-(1H)-酮和9-甲基-7-(1,2,4-三唑-4-基)-1,2,3,5-四氢咪唑并(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。