4,5,8,9-tetrahydro-8-methyl-9-oxothieno[3′,2′:5,6]cyclohepta[1,2-<i>b</i>]- pyrrole-7-acetic acid. A new anti-inflammatory/analgesic agent
作者:A. C. Goudie、H. E. Rosenberg、R. W. Ward
DOI:10.1002/jhet.5570200437
日期:1983.7
The synthesis of the thienocyclohepta[1, 2-b]pyrrole acid 1 from the morpholide 3 is reported. This novel morpholide was prepared by regiospecific alkylation of the dianion of 4-(1, 3-dioxobutyl)morpholine with 3-bromomethylthiophene. Subsequent Knorr pyrrole synthesis led to the morpholide 8b which was converted to the desired tricyclic ring system under Vilsmeier conditions. An alternative route involving
据报道由吗啉3合成噻吩并环庚[1,2- b ]吡咯酸1。该新型吗啉化物是通过4-(1,3-二氧杂丁基)吗啉与3-溴甲基噻吩的二价阴离子的区域特异性烷基化制备的。随后的克诺尔吡咯合成导致吗啉化物8b,其在维尔斯迈尔条件下转化为所需的三环系统。使用涉及Friedel-Crafts环化的替代方法来制备相关的苯并环庚吡咯2。