dimethyl (4R)-4-hydroxy-24-nor-3,4-secolupane-3,28-dioate

(3S,4S,5R,8R,9R,10R,13S,14R,15S)-4-(2-Cyano-ethyl)-15-isopropyl-4,9,10-trimethyl-3-((R)-1-methyl-2-oxo-ethyl)-hexadecahydro-cyclopenta[a]phenanthrene-13-carboxylic acid methyl ester

(3R,4R,5R,8R,9R,10R,13S,14R,15S)-3-((S)-1-Formyloxy-ethyl)-15-isopropyl-4-(2-methoxycarbonyl-ethyl)-4,9,10-trimethyl-hexadecahydro-cyclopenta[a]phenanthrene-13-carboxylic acid methyl ester

28-methyl ester, 3-nitrile of (4R)-4-benzoyloxy-24-nor-3,4-secolupane-3,28-dioic acid

methyl dihydrobetulonate

methyl 3-oxo-24-norlupan-28-oate

methyl (5S,5aR,7aR,7bR,9aS,12S,12aR,12bR,14aR,14bR)-12-isopropyl-5,7a,7b,14b-tetramethyl-3-oxoicosahydro-9aH-cyclopenta[7,8]phenanthro[2,1-c]oxepine-9a-carboxylate