(1S,2S,4R,5S)-4-((R)-1-carboxy-2-phenyl-ethoxy)-5-(2-acetamido-3,4,6-O-triacetyl-2-deoxy-β-D-glucopyranosyl)-cyclohexane-1,2-dicarboxylic acid di-tert-butyl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以90%的产率得到(1S,2S,4S,5R)-4-((R)-1-carboxy-2-phenyl-ethoxy)-5-(2-acetamido-2-deoxy-β-D-glucopyranosyl)-cyclohexane-1,2-dicarboxylic acid di-tert-butyl ester