An efficient lactamisation/N-acyliminium Pictet–Spengler domino strategy for the diasteroselective synthesis of polyhydroxylated quinoxalinone, β-carboline and quinazolinone derivatives
作者:B. V. Subba Reddy、B. P. Reddy、P. V. G. Reddy、A. Siriwardena
DOI:10.1039/c6ob00250a
日期:——
A novel cascade strategy has been developed for the synthesis of polyhydroxylated-indolizidino[8,7-b]indole, -indolo[2,1-c]quinoxalinone, -pyrrolo[2,1-c]quinoxalinone, -benzo[6,7]azepino[3,4-b]indol]-4'(3a'H)-one, -benzo[4,5]imidazo[1,2-c]quinazolin]-4'(3a'H)-one, and -tetrazolo[1,5-c]quinazolin]-9'(9a'H)-one scaffolds. The key step is a lactamisation/Pictet-Spengler condensation of a bifunctional
已开发出一种新颖的级联策略,用于合成多羟基化的吲哚并[8,7-b]吲哚,-吲哚[2,1-c]喹喔啉酮,-吡咯并[2,1-c]喹喔啉酮,-苯并[6, 7] azepino [3,4-b]吲哚] -4'(3a'H)-1,-苯并[4,5]咪唑并[1,2-c]喹唑啉] -4'(3a'H)-1和-tetrazolo [1,5-c] quinazolin] -9'(9a'H)-支架。关键步骤是将双功能糖衍生的内酰胺化/ Pictet-Spengler缩合。