作者:David J. Bentley、Christopher J. Moody
DOI:10.1039/b414996c
日期:——
The C-6 substituted tryptophan di- and tri-peptides 5 and 6, representing the tryptophan core of stephanotic acid, have been synthesized, the key steps being the formation of the phosphono-di- and tri-peptides 8 and 10 by a highly chemoselective rhodium(II) catalyzed carbene N-H insertion reaction, their subsequent Horner–Wadsworth–Emmons reactions with N-Boc-6-bromoindole-3-carboxaldehyde, and the rhodium(I) catalyzed asymmetric hydrogenation of the resulting dehydro di- and tri-peptides.
我们合成了 C-6 取代的色氨酸二肽和三肽 5 和 6,它们代表了阶梯色氨酸的色氨酸核心,其关键步骤是通过高化学选择性铑(II)催化的碳烯 N-H 插入反应形成膦酰二肽和三肽 8 和 10、它们随后与 N-叔丁氧羰基-6-溴吲哚-3-甲醛发生 Horner-Wadsworth-Emmons 反应,并在铑(I)催化下对生成的脱氢二肽和三肽进行不对称氢化。