tert-butyl (1S,2S,6R,7R,9R)-12,12-dimethyl-4-oxo-7-propan-2-yloxy-3,8,11,13-tetraoxa-5-azatricyclo[7.4.0.02,6]tridecane-5-carboxylate 在
lithium hydroxide 作用下,
以
四氢呋喃 、
水 为溶剂,
反应 0.33h,
以94%的产率得到tert-butyl N-[(4aR,6R,7R,8S,8aS)-8-hydroxy-2,2-dimethyl-6-propan-2-yloxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-yl]carbamate