Methyl (3β,5ξ,18α)-3-acetoxy-12-oxoolean-9(11)-en-28-oate

3,12-二氧代齐墩果-9(11)-烯-28-酸甲酯

Methyl (4aS,6aR,6bS,13aS,15aR,15bR)-2,2,6a,6b,9,9,13a-heptamethyl -15-oxo-1,3,4,5,6,6a,6b,7,8,8a,9,13,13a,15,15a,15b-hexadecahydrop iceno[2,3-d][1,2]oxazole-4a(2H)-carboxylate

Methyl (2E,5ξ,18α)-2-(hydroxymethylene)-3,12-dioxoolean-9(11)-en- 28-oate

methyl (4aS,6aR,6bS,8aR,12aS,14aR,14bS)-11-formyl-2,2,6a,6b,9,9,12a-heptamethyl-10,14-dioxo-1,3,4,5,6,6a,6b,7,8,8a,9,10,11,12,12a,14,14a,14b-octadecahydropicene-4a(2H)-carboxylate