(+)-Negamycin was synthesised employing the highly diastereoselective conjugate addition of lithium (alpha-methylbenzyl)benzylamide in the key step. The synthesis was completed in 13 steps starting from ethyl 4-chloroacetoacetate with an overall yield of 24 %. Copyright (C) 1996 Elsevier Science Ltd
(+)-Negamycin 通过在关键步骤采用
锂 (α-甲基苯甲基) 苯甲酰胺的高度对映选择性共轭加成反应进行合成。整个合成过程从乙基 4-
氯乙酰乙酸酯开始,经过 13 步反应,总体产率为 24%。版权 (C) 1996 Elsevier Science Ltd