(6
R)-3-azidocarbonyl-8-oxo-7
t-(2-thiophen-2-yl-acetylamino)-(6
rH)-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2
c-carboxylic acid benzhydryl ester 生成
(6R)-3-carbamoyl-8-oxo-7t-(2-thiophen-2-yl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2c-carboxylic acid benzhydryl ester