(6R)-7c-amino-3-methyl-8-oxo-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid methyl ester 在
magnesium sulfate 作用下,
以
二氯甲烷 为溶剂,
生成 (6
R)-3-methyl-8-oxo-7
t-(2-thiophen-2-yl-acetylamino)-(6
rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid methyl ester