methyl (6S)-6-[(2S,3S,4R,5S,6R,8R,9R,10R)-10-[(2R,4S,5S,6S)-4,5-dihydroxy-6-methyloxan-2-yl]oxy-9-ethyl-4-hydroxy-3,5,8-trimethyl-1,7-dioxaspiro[5.5]undecan-2-yl]heptanoate 在
sodium hydroxide 作用下,
以
四氢呋喃 为溶剂,
反应 2.0h,
生成 (S)-6-[(2S,3S,4R,5S,6R,8R,9R,10R)-10-((2R,4S,5S,6S)-4,5-Dihydroxy-6-methyl-tetrahydro-pyran-2-yloxy)-9-ethyl-4-hydroxy-3,5,8-trimethyl-1,7-dioxa-spiro[5.5]undec-2-yl]-heptanoic acid