申请人:Sandoz, Inc.
公开号:US03978059A1
公开(公告)日:1976-08-31
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 substituted by a thienyl or furyl group, e.g., 10-(2-thienylmethyl)-2,3-dihydro-imidazo[2,1-b] quinazolin-5(10)-one, and useful, for example, as broncho-dilator 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.
这些化合物是具有生物活性的三环喹唑啉酮,属于咪唑并[2,1-b]喹唑啉-5-酮、嘧啶并[2,1-b]喹唑啉-6-酮和二氮杂环[2,1-b]喹唑啉-7-酮类,被噻吩基或呋喃基取代,例如,10-(2-噻吩甲基)-2,3-二氢咪唑并[2,1-b]喹唑啉-5(10)-酮,可用作支气管扩张剂。制备这些化合物的方法包括将N-羧基蒽酰亚酸酐(异噻唑酸酐)与环状伪硫脲反应,例如2-有机硫代咪唑或2-有机硫代-3,4,5,6-四氢吡啶。