2,4-Dimethoxy-benzoic acid (2R,3R,4R,5S,6R)-3-methoxy-5-(4-methoxy-benzyloxy)-2-methyl-6-phenylsulfanyl-tetrahydro-pyran-4-yl ester

4-Methoxy-benzoic acid (2R,3R,4R,5S)-3-methoxy-5-(4-methoxy-benzyloxy)-2-methyl-6-(2,2,2-trichloro-acetimidoyloxy)-tetrahydro-pyran-4-yl ester

ethyl (1R,3aR,4S,4aR,7R,7aR,8aS)-4-formyl-8a-((((2R,3S,4S,5R,6R)-3-hydroxy-5-methoxy-4-((4-methoxybenzoyl)oxy)-6-methyltetrahydro-2H-pyran-2-yl)oxy)methyl)-3-isopropyl-7-methyl-4,4a,5,6,7,7a,8,8a-octahydro-1,4-methano-s-indacene-3a(1H)-carboxylate