Ring-ring interconversions. Part 3. On the effect of the substituents on the thiazole moiety in the ring-opening/ring-closing reactions of nitrosoimidazo[2,1-<i>b</i>][1,3]thiazoles with hydrochloric acid
作者:Roberta Billi、Barbara Cosimelli、Domenico Spinelli、Alberto Leoni
DOI:10.1002/jhet.5570370433
日期:2000.7
The reaction of 6-(4-chlorophenyl)-5-nitrosoimidazo[2,1-b][1,3]thiazole 1b, 6-(4-chlorophenyl)-2-methyl-5-nitrosoimidazo[2,1-b][1,3]thiazole 1c, 6-(4-chlorophenyl)-2,3-dimethyl-5-nitrosoimidazo-[2,1-b][1,3]thiazole 1d and 2-(4-chlorophenyl)-3-nitrosobenzo[d]imidazo[2,1-b][1,3]thiazole 1e with hydrochloric acid has been carried out in order to investigate the effect of substituents on the thiazole ring
6-(4-氯苯基)-5-硝基磺酰咪唑[2,1- b ] [1,3]噻唑1b,6-(4-氯苯基)-2-甲基-5-硝基磺酰咪唑[2,1- b]的反应] [1,3]噻唑1c,6-(4-氯苯基)-2,3-二甲基-5-亚硝基磺酰胺基-[2,1- b ] [1,3]噻唑1d和2-(4-氯苯基)-为了研究取代基在最近报道的环-环互变反应中对噻唑环的作用,已经进行了3-亚硝基苯并[ d ]咪唑并[2,1- b ] [1,3]噻唑1e与盐酸的反应。在每种情况下,相应的[1,4]-噻嗪[3,4- c ] [1,2,4]恶二唑-3-酮2b-e已获得。特别是,苯并衍生物1e提供了4-(4-氯苯基)-4-羟基-4 H-苯并[5,6] [1,4]噻嗪基[3,4- c ] [1,2,4]恶二唑-1-one 2e,包含一个新的具有拟平面几何形状的三环系统,其药理学潜力似乎是有希望的。