已开发出对苯并[ a ]-和吲哚并[2,3- a ]喹啉联苯胺的对映选择性两步法。它由(i)外消旋或前手性δ-氧代(二)酯与(S)-(3,4-二甲氧基苯基)丙氨醇或(S)-色氨酸的立体选择性环缩合反应涉及动态动力学拆分和/或对映体或非对映体酯基的区分,和(ii)随后利用所得恶唑并哌啶酮内酰胺中存在的被掩蔽的N-酰基亚氨基亚胺离子在芳环上进行立体控制环化。
已开发出对苯并[ a ]-和吲哚并[2,3- a ]喹啉联苯胺的对映选择性两步法。它由(i)外消旋或前手性δ-氧代(二)酯与(S)-(3,4-二甲氧基苯基)丙氨醇或(S)-色氨酸的立体选择性环缩合反应涉及动态动力学拆分和/或对映体或非对映体酯基的区分,和(ii)随后利用所得恶唑并哌啶酮内酰胺中存在的被掩蔽的N-酰基亚氨基亚胺离子在芳环上进行立体控制环化。
Complementary routes for the stereoselective synthesis of functionalized benzoquinolizidine targets
作者:Steven M. Allin、Liam J. Duffy、Philip C. Bulman Page、Vickie McKee、Mark Edgar、Michael J. McKenzie、Mercedes Amat、Oriol Bassas、Maria M.M. Santos、Joan Bosch
DOI:10.1016/j.tetlet.2006.06.035
日期:2006.8
We report new and complementary routes for the highly stereoselective construction of functionalized benzoquinolizidine targets from readily available, non-racemic chiral templates. The methods developed allow us to predetermine relative product stereochemistries by judicious choice of substrate sub-structure, and provide ready access to alternative stereoisomers. (c) 2006 Elsevier Ltd. All rights reserved.
Straightforward Methodology for the Enantioselective Synthesis of Benzo[<i>a</i>]- and Indolo[2,3-<i>a</i>]quinolizidines
作者:Mercedes Amat、Maria M. M. Santos、Oriol Bassas、Núria Llor、Carmen Escolano、Arantxa Gómez-Esqué、Elies Molins、Steven M. Allin、Vickie McKee、Joan Bosch
DOI:10.1021/jo070539g
日期:2007.7.1
substituted benzo[a]- and indolo[2,3-a]quinolizidines has been developed. It consists of (i) a stereoselective cyclocondensation of a racemic or prochiral δ-oxo(di)ester with either (S)-(3,4-dimethoxyphenyl)alaninol or (S)-tryptophanol in a process involving a dynamic kinetic resolution and/or the differentiation of enantiotopic or diastereotopic ester groups, and (ii) a subsequent stereocontrolled cyclization
已开发出对苯并[ a ]-和吲哚并[2,3- a ]喹啉联苯胺的对映选择性两步法。它由(i)外消旋或前手性δ-氧代(二)酯与(S)-(3,4-二甲氧基苯基)丙氨醇或(S)-色氨酸的立体选择性环缩合反应涉及动态动力学拆分和/或对映体或非对映体酯基的区分,和(ii)随后利用所得恶唑并哌啶酮内酰胺中存在的被掩蔽的N-酰基亚氨基亚胺离子在芳环上进行立体控制环化。