p. 2591 - 2594
(2007/10/02)5-{2-[(3S,8S,9S,10R,13R,14S,17R)-10,13-Dimethyl-3-(tetrahydro-pyran-2-yloxy)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-propyl}-3-hydroxy-3-methyl-dihydro-furan-2-one
(R)-5-{2-[(3S,8S,9S,10R,13R,14S,17R)-10,13-Dimethyl-3-(tetrahydro-pyran-2-yloxy)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-propyl}-3-methyl-dihydro-furan-2-one
Acetic acid (3S,8S,9S,10R,13R,14S,17R)-17-[2-(4-hydroxy-4-methyl-5-oxo-tetrahydro-furan-2-yl)-1-methyl-ethyl]-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester
3-Hydroxy-5-[2-((3S,9S,10R,13R,14R,17R)-3-hydroxy-10,13-dimethyl-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)-propyl]-3-methyl-dihydro-furan-2-one
(R)-3-((3S,9S,10R,13R,14R,17R)-3-Acetoxy-10,13-dimethyl-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)-butyric acid methyl ester