(3aR,11aR)-11a-[(2S)-4-[tert-butyl(diphenyl)silyl]oxy-2-methyl-2-phenylmethoxybutyl]-5,10-dihydroxy-2,2-dimethyl-7-[(2R,4R,5R,6R)-6-methyl-4,5-bis(phenylmethoxy)oxan-2-yl]-6-phenylmethoxy-3a,4-dihydronaphtho[2,3-f][1,3]benzodioxol-11-one 在
HF*(Pyr)n 、
potassium carbonate 作用下,
以
四氢呋喃 、
丙酮 为溶剂,
反应 12.0h,
生成 (3aR,11aR)-9-Benzyloxy-3a-((S)-2-benzyloxy-4-hydroxy-2-methyl-butyl)-8-((2R,4R,5R,6R)-4,5-bis-benzyloxy-6-methyl-tetrahydro-pyran-2-yl)-5,10-dimethoxy-2,2-dimethyl-11,11a-dihydro-3aH-1,3-dioxa-cyclopenta[b]anthracen-4-one