(6aR,7S,9aS,11R,12S,13aS)-5-benzyloxy-2,3,6,6a,7,8,9,9a,10,11,12,13-dodecahydro-11,12-dihydroxy-6a,7,10,10-tetramethyl-3-oxo-1H-benzo[8,8a][1]benzopyrano[2,3-e]isoindole
(6aR,7S,9aS,11R,12S,13aS)-5-benzyloxy-2-(t-butoxycarbonyl)-2,3,6,6a,7,8,9,9a,10,11,12,13-dodecahydro-11-hydroxy-6a,7,10,10-tetramethyl-12-phenylsulfonyloxy-3-oxo-1H-benzo[8,8a][1]-benzopyrano[2,3-e]isoindole
(6aR,7S,9aS,11R,12S,13aS)-12-acetoxy-5-benzyloxy-2-(t-butoxycarbonyl)-2,3,6,6a,7,8,9,9a,10,11,12,13-dodecahydro-11-hydroxy-6a,7,10,10-tetramethyl-3-oxo-1H-benzo[8,8a][1]benzopyrano[2,3-e]isoindole