Formal Synthesis of Bioactive Indole Alkaloids Eburnamonine, Eburnaminol, and Vindeburnol
作者:Narshinha Argade、Pravat Mondal
DOI:10.1055/s-0036-1588386
日期:——
Abstract Starting from (±)-3-acetoxyglutarimide, diastereoselective formal synthesis of indole alkaloids (±)-eburnamonine, (±)-eburnaminol, and (±)-vindeburnol have been demonstrated via a common intermediate (±)-1-hydroxy-12-tosyl-2,3,6,7,12,12b-hexahydroindolo[2,3-a]quinolizin-4(1H)-one in very good overall yields. The acetoxy group from (±)-3-acetoxyglutarimide was first used to induce the diastereoselectivity
摘要 从(±)-3-乙酰氧基戊二酰亚胺开始,吲哚生物碱(±)-氨丁胺,(±)-氨基苯胺和(±)-vindeburnol的非对映选择性形式合成已通过常见的中间体(±)-1-羟基-12证明。 -tosyl-2,3,6,7,12,12b-六氢吲哚[2,3- a ]喹诺嗪-4(1 H)-一,总收率非常好。(±)-3-乙酰氧基戊二酰亚胺的乙酰氧基首先被用于诱导非对映选择性,也被用作酮羰基的潜在来源。立体选择性消除,还原和分子内环化是其中涉及的关键步骤。 从(±)-3-乙酰氧基戊二酰亚胺开始,吲哚生物碱(±)-氨丁胺,(±)-氨基苯胺和(±)-vindeburnol的非对映选择性形式合成已通过常见的中间体(±)-1-羟基-12证明。 -tosyl-2,3,6,7,12,12b-六氢吲哚[2,3- a ]喹诺嗪-4(1 H)-一,总收率非常好。(±)-3-乙酰氧基戊二酰亚胺的乙酰氧基首先被用于诱导非对映