在
lithium hydroxide 作用下,
以
四氢呋喃 、
水 为溶剂,
反应 41.0h,
以87%的产率得到2-[(2S,3R,4S,4aS,6R,8aS)-2-[(1S)-6-[(2S,5S)-5-[2-[(2S,4R,6R)-6-[[(2S,3R,4R,4aS,6R,7R,8aS)-7-[tert-butyl(dimethyl)silyl]oxy-6-[2-[tert-butyl(dimethyl)silyl]oxyethyl]-3-hydroxy-4-methyl-2,3,4,4a,6,7,8,8a-octahydropyrano[3,2-b]pyran-2-yl]methyl]-4-methyl-5-methylideneoxan-2-yl]ethyl]-4-methylideneoxolan-2-yl]-1-[tert-butyl(dimethyl)silyl]oxy-4-oxohex-2-ynyl]-3,4-bis[[tert-butyl(dimethyl)silyl]oxy]-2,3,4,4a,6,7,8,8a-octahydropyrano[3,2-b]pyran-6-yl]acetic acid