Entry into 6-Methoxy-D(+)-tryptophans. Stereospecific Synthesis of 1-Benzenesulfonyl-6-methoxy-D(+)-tryptophan Ethyl Ester
作者:Michael S. Allen、Linda K. Hamaker、Anthony J. La Loggia、James M. Cook
DOI:10.1080/00397919208021343
日期:1992.7
Abstract A strategy for the synthesis of optically active ring-A methoxylated indole alkaloids which employs the Moody azide/Schollkopf chiral auxiliary protocol has resulted in the successful preparation of 1-benzenesulfonyl-6-methoxy-D(+)-tryptophan ethyl ester 16. This amino ester is required for the synthesis of Alstonia bisindole alkaloids including macralstonine 2 via an enantiospecific Pictet-Spengler
摘要 采用 Moody azide/Schollkopf 手性辅助方案合成光学活性环-A 甲氧基化吲哚生物碱的策略已成功制备 1-苯磺酰基-6-甲氧基-D(+)-色氨酸乙酯 16。该氨基酯是通过对映特异性 Pictet-Spengler 反应合成 Alstonia 双吲哚生物碱(包括 macralstonine 2)所必需的。