Practical, asymmetric synthesis of aromatic-substituted bulky and hydrophobic tryptophan and phenylalanine derivatives
作者:Wei Wang、Chiyi Xiong、Junyi Zhang、Victor J Hruby
DOI:10.1016/s0040-4020(02)00162-x
日期:2002.4
Burk's DuPHOS-based Rh (I) catalysts generated high enantiomerically pure α-amino acid derivatives, which subsequently underwent Suzuki cross couplings with boronic acid derivatives to afford these aromatic substituted amino acids in high yields and high enantioselectivity. The method can allow for the preparation of such amino acids in large scales for extensive structure–activity studies.
芳香环取代的色氨酸和苯丙氨酸可以提供有价值的工具,以开发具有特定结构特征的强效和选择性肽配体,此外还可以提供一个大的亲脂性表面来与受体结合并穿越膜屏障。已经开发了合成这些新氨基酸的有效方法。在该方法中,使用Burk基于DuPHOS的Rh(I)催化剂进行α-酰胺的不对称氢化生成高对映体纯的α-氨基酸衍生物,随后将其与硼酸衍生物进行Suzuki交叉偶联,从而以高收率获得这些芳族取代的氨基酸和高对映选择性。该方法可以大规模制备此类氨基酸,以进行广泛的结构活性研究。