描述:
(6AR,7S,9AS,11S,13AS)-5-benzyloxy-2-(t-butoxycarbonyl)-2,3,6,6a,7,8,9,9a,10,11,12,13-dodecahydro-6a,7,10,10-tetramethyl-11-(3-phenylureido)-3-oxo-1H-benzo[8,8a][1]benzopyrano[2,3-e]isoindole 以40 mg (95%)的产率得到(6aR,7S,9aS,11S,13aS)-5-benzyloxy-2,3,6,6a,7,8,9,9a,10,11,12,13-dodecahydro-6a,7,10,10-tetramethyl-11-(3-phenylureido)-3-oxo-1H-benzo[8,8a][1]benzopyrano[2,3-e]isoindole