作者:Jack E. Baldwin、Robert M. Adlington、Richard H. Jones、Christopher J. Schofield、Constantine Zaracostas、Colin W. Greengrass
DOI:10.1016/s0040-4020(01)82070-6
日期:1986.1
biological activities of the γ-lactamanalogues (-25), (-25) and (26) of carbapenicillanicacids are described. The strategy employed for the synthesis of effected construction of a γ-lactam onto a preformed azetidine, followed by direct amination of the lactam enolate (20) with diphenylphosphinoyl-hydroxylamine. X-ray crystallographic studies demonstrated that the analogues bore a strong morphological