p-Methoxybenzyl 2α-methyl-2β-<(S)-acetoxymethoxymethyl>-6β-(phenoxyacetamido)penam-3α-carboxylate (R)-sulfoxide 以
苯 为溶剂,
反应 4.0h,
以90 mg的产率得到(2S,3S,4S,5R,6R)-3-((S)-Acetoxy-methoxy-methyl)-3-methyl-4,7-dioxo-6-(2-phenoxy-acetylamino)-4λ
4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid 4-methoxy-benzyl ester