作者:David J. Ager、Diane E. Froen、Russell C. Klix、Benxin Zhi、John M. McIntosh、Rasiah Thangarasa
DOI:10.1016/s0040-4020(01)85061-4
日期:1994.2
Alkylations of anions derived from dipeptides with a glycine at the C-terminus have been investigated. A hydrocarbon sedition in the N-terminal residue does impart some asymmetric induction. The use of a chiral ester derivative provides the potential for double asymmetric induction and good selectivity. With an aspartyl residue at the N-terminus, problems were encountered due to competing side reactions
已经研究了源自二肽的阴离子在C端与甘氨酸的烷基化。N末端残基中的烃类确实会产生一些不对称的诱导作用。手性酯衍生物的使用提供了双重不对称诱导和良好选择性的潜力。在N末端带有天冬氨酰残基时,由于竞争性副反应而遇到问题。使用氮杂环丁酮可以绕开其中一些,但是观察到的诱导并不高。