作者:Jozsef Aszodi、Alain Bonnet、Georges Teutsch
DOI:10.1016/s0040-4020(01)81967-0
日期:1990.1
Enantioselective synthesis of the isocephem synthon has been carried out by assembling 3 building blocks. Cycloaddition of phthalimido acetyl chloride with a chiral imine gave the β-lactam nucleus in 80% diastereoisomeric excess (d.e.). The elaboration of the thiazine ring was carried out using a highly functionalised epoxy ester and P2I4 mediated water elimination.
对映异构体合成子的对映选择性合成是通过组装3个结构单元来进行的。邻苯二甲酰亚胺基乙酰氯与手性亚胺环加成后,β-内酰胺核的非对映异构体过量为80%(de)。噻嗪环的修饰是使用高度官能化的环氧酯和P 2 I 4介导的水消除进行的。