Monocyclic β-lactam, d1- prepared by the diketene cycloaddition method was subjected to microbial transformation to give 3,4-trans-(R), (S)-OH mixture and 3,4-cis-(R)-OH and 3,4-cis-(S)-OH depending on the microorganisms.
单环β内酰胺,D1 -通过双烯酮环加成方法制备物进行微
生物转化,得到3,4-反式- (R),(S)-OH混合物和3,4-顺式- (R)-OH和3 ,4-顺式-(S)-OH,取决于微
生物。