7α-methoxy-7β-(3,5-di-tert-butyl-4-hydroxybenzylideneamino)-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, diphenylmethyl ester 以
甲醇 、
水 、
乙酸乙酯 为溶剂,
生成
7β-amino-7α-methoxy-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid,diphenylmethyl ester