申请人:Sandoz, Inc.
公开号:US03969506A1
公开(公告)日:1976-07-13
The compounds are biologically active tricyclic quinazolinones of the class of imidazo[2,1-b]quinazolin-5-ones, pyrimido[2,1-b]quinazolin-6-ones and diazepino[2,1-b]quinazolin-7-ones, useful, for example, as bronchodilator agents. Processes for preparation of said compounds include the reaction of a N-carboxy anthranilic anhydride (an isatoic anhydride) with a cyclic pseudothiourea such as 2-organomercapto-4,5-dihydroimidazole or 2-organomercapto-3,4,5,6-tetrahydropyrimidine.
这些化合物属于咪唑[2,1-b]喹唑啉-5-酮、嘧啶并[2,1-b]喹唑啉-6-酮和二氮杂[2,1-b]喹唑啉-7-酮的三环喹唑啉酮类,具有生物活性,例如可作为支气管扩张剂。制备这些化合物的方法包括将N-羧基蒽醌酐(异酰亚胺)与环状伪硫脲反应,例如与2-有机硫醇基-4,5-二氢咪唑或2-有机硫醇基-3,4,5,6-四氢嘧啶反应。