Creation of chirality in the reaction of the chiral ester enolate-imine condensation leading to the stereodivergent synthesis of β-lactams
作者:Makoto Shimizu、Yoshihiro Teramoto、Tamotsu Fujisawa
DOI:10.1016/0040-4039(94)02327-8
日期:1995.1
4-positions in the ester enolate-imine condensation is studied using different metal enolates of the chiral esters possessing amino alcohols derived all from (+)-camphor as an auxiliary, and 4R- or 4S-β-lactam is obtained in a highly stereoselective manner, respectively. The effects of the structure of the chiral auxiliary and the coordination ability of the heteroatoms in the ester part are also discussed
使用具有全部来自(+)-樟脑的氨基醇的氨基醇的手性酯的不同金属烯醇盐,研究了酯烯醇盐-亚胺缩合中在3-和4-位具有取代基的β-内酰胺在C-4的立体控制,和4 R-或4 S - β-内酰胺分别以高度立体选择性的方式获得。还讨论了手性助剂结构和酯部分杂原子配位能力的影响。