(2S,3R,4R,5S,6S)-3,4,5-Tris-(tert-butyl-dimethyl-silanyloxy)-6-[3-(toluene-4-sulfonyloxy)-propyl]-tetrahydro-pyran-2-carboxylic acid methyl ester 在
四丁基氟化铵 、
水 、
N,N-二异丙基乙胺 、 sodium iodide 作用下,
以
四氢呋喃 、
乙腈 为溶剂,
生成 (2S,3S,4R,5R,6S)-3,4,5-trihydroxy-6-[3-[4-[(8S,11R,13S,14S,17S)-17-hydroxy-13-methyl-3-oxo-17-prop-1-ynyl-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-11-yl]-N-methylanilino]propyl]oxane-2-carboxylic acid