3-oxo-11α-phenylseleno-7,8αH-eudesma-1,4-dien-12,8-olide

methyl 2-((2R,4aS)-4a,8-dimethyl-7-oxo-1,2,3,4,4a,5,6,7-octahydronaphthalen-2-yl)propanoate

methyl (11S)-3-oxo-7αH-eudesma-1,4-dien-12-oate

(S)-2-((2R,3S,4aS)-3-hydroxy-4a,8-dimethyl-7-oxo-1,2,3,4,4a,7-hexahydronaphthalen-2-yl)propanoic acid

(3S,3aR,4S,5aS,9bR)-4-hydroxy-3,5a,9-trimethyl-3a,5,5a,9b-tetrahydronaphtho[1,2-b]furan-2,8(3H,4H)-dione