[(1R,13R,14S,18S,19S,20S)-19-[tert-butyl(dimethyl)silyl]oxy-16,16-dimethyl-11-oxo-5,7,15,17-tetraoxa-12-azapentacyclo[11.7.0.02,10.04,8.014,18]icosa-2,4(8),9-trien-20-yl]methyl acetate 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
以74%的产率得到((3aS,3bR,10bR,11S,12S,12aR)-12-hydroxy-2,2-dimethyl-5-oxo-3a,3b,4,5,10b,11,12,12a-octahydrobis[1,3]dioxolo[4,5-c:4',5'-j]-phenanthridin-11-yl)methyl acetate