3-{4-[(benzhydryl-amino)-(2-benzhydryloxycarbonyl-3,3-dimethyl-7-oxo-4-thia-1-aza-bicyclo[3.2.0]hept-6-ylcarbamoyl)-methyl]-phenoxymethyl}-5,8-dioxo-7-(2-phenoxy-acetylamino)-5λ4-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid tert-butyl ester 在
苯甲醚 、
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
反应 1.5h,
以87%的产率得到(6R,7R)-3-[[4-[(1R)-1-amino-2-[[(2S,5R,6R)-2-carboxy-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptan-6-yl]amino]-2-oxoethyl]phenoxy]methyl]-5,8-dioxo-7-[(2-phenoxyacetyl)amino]-5lambda4-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid