在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 14.0h,
以100%的产率得到5-[(2S,3S,4R,5R,6S)-6-[(2S,3R,4S,5S)-2-[(4aS,6aR,6aS,6bR,8aR,10S,12aR,14bS)-10-[(2R,3R,4S,5R,6R)-3-[(2S,3R,4S,5S,6R)-6-(hydroxymethyl)-3,4,5-tris(phenylmethoxy)oxan-2-yl]oxy-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]oxy-2,2,6a,6b,9,9,12a-heptamethyl-1,3,4,5,6,6a,7,8,8a,10,11,12,13,14b-tetradecahydropicene-4a-carbonyl]oxy-4,5-bis(phenylmethoxy)oxan-3-yl]oxy-2-methyl-4,5-bis(phenylmethoxy)oxan-3-yl]oxy-5-oxopentanoic acid