、
(1S,3S,4S,5S,6R)-5,6-dihydroxy-2-azabicyclo[2.2.1]heptane-3-carboxylic acid tert-butyl ester 以
N,N-二甲基甲酰胺 为溶剂,
以6.34 g的产率得到tert-butyl (1S,3S,4S,5S,6R)-5,6-dihydroxy-2-[(2S,4R)-4-(4-methylphenyl)sulfonyloxy-1-phenylmethoxycarbonylpyrrolidine-2-carbonyl]-2-azabicyclo[2.2.1]heptane-3-carboxylate