Regio- and stereoselective α-alkylation of N-terminal amino acid residue of peptides using a pyridoxal model compound with a chiral ansa-structure
作者:Kazuyuki Miyashita、Hiroshi Iwaki、Kuninori Tai、Hidenobu Murafuji、Naoko Sasaki、Takeshi Imanishi
DOI:10.1016/s0040-4020(01)00512-9
日期:2001.7
stereoselective α-alkylation of N-terminal amino acid residue of peptides was achieved by Li+-mediated alkylation of aldimines prepared from the peptides and a pyridoxal model compound having a chiral ansa-structure and an ethoxyethoxy group at C-3. The stereochemistry and stereoselectivity of the reaction were found to be influenced predominantly by the chirality of the model compound and Li+, but little
肽的N末端氨基酸残基的区域和立体选择性α-烷基化是通过由Li +介导的由肽和在C-3具有手性ansa结构和乙氧基乙氧基的吡ido醛模型化合物制备的醛亚胺的烷基化而实现的。发现反应的立体化学和立体选择性主要受模型化合物和Li +的手性影响,而受原始肽的立体化学影响很小。