3,12-二氧代齐墩果-9(11)-烯-28-酸甲酯

2-氰基-3,12-二氧代齐墩果-1,9-二烯-28-酸

2-氰基-3,12-二氧代齐墩果-1,9(11)-二烯-28-酸甲酯

Methyl (5ξ,18α)-2-cyano-3-hydroxy-12-oxooleana-2,9(11)-dien-28-oa te

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