Benzoic acid (S)-4-{(4S,5R)-5-[(1R,2R)-2-benzyloxycarbonylamino-1,3-bis-(tert-butyl-dimethyl-silanyloxy)-propyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-4-methanesulfonyloxy-butyl ester 在
potassium tert-butylate 作用下,
以
四氢呋喃 为溶剂,
生成 (3aR,4R,6R,7R,7aR)-4-(3-Benzoyloxy-propyl)-7-(tert-butyl-dimethyl-silanyloxy)-6-(tert-butyl-dimethyl-silanyloxymethyl)-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyridine-5-carboxylic acid benzyl ester