Heterocycles With a Benzothiadiazepine Moiety. IV. Synthesis of Novel Tetracyclic Rings by Intramolecular Cyclization of 10-Bromoacetyl-10,11-dihydro-11-ethoxycarbonyl-pyrrolo[1,2-b] [1,2,5] Benzothiadiazepine 5,5-Dioxide and Its Derivatives
作者:Romano Silvestri、Eugenia Pagnozzi、Giorgio Stefancich、Marino Artico
DOI:10.1080/00397919408010583
日期:1994.10
Abstract Two novel tetracyclic derivatives, namely 5 and 8, have been synthesized by intramolecular cyclization of the 10-bromoacetyl-10,11-dihydro-11-ethoxycarbonylpyrrolo[1,2-b] [1,2,5]benzothiadiazepine 5,5-dioxide (3) and, respectively, the bis-methylamide of 11-carboxy-10,11-dihydropyrrolo[1,2-b] [1,2,5]benzothiadiazepine-11-acetic acid 5,5-dioxide (4). The last compound formed when treating with
摘要 通过 10-溴乙酰基-10,11-二氢-11-乙氧基羰基吡咯并[1,2-b] [1,2,5]苯并噻二氮卓 5,5 的分子内环化合成了两种新型四环衍生物,即 5 和 8。 -dioxide (3) 和 11-carboxy-10,11-dihydropyrrolo[1,2-b] [1,2,5]benzothiadiazepine-11-乙酸 5,5-dioxide (4 )。当用过量的甲胺处理内酰胺 5 或 11-羧基-10,11-二氢吡咯并[1,2-b] [1,2,5] 苯并噻二氮杂-11-乙酸 5 的二乙酯时形成的最后一种化合物,5-二氧化物 (7)。实现了二酯 7 的明确合成,以确认衍生物 4 和 5 的化学结构。