(6
R)-3-acetoxymethyl-8-oxo-7
t-(3-oxo-3
H-isobenzofuran-1-ylideneamino)-(6
rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 4-nitro-benzyl ester 在
肼 作用下,
以
四氢呋喃 为溶剂,
生成
(6R)-3-acetoxymethyl-7t-amino-8-oxo-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 4-nitro-benzyl ester