(7R,8S)-7-(3-(1,3-dithian-2-ylidene)propyl)-8-methyl-8-((1E,3E)-penta-1,3-dien-1-yl)-1,4-dioxaspiro[4.5]decane

(2'R,4a'S,4b'S,8a'R,10a'R)-2',4b'-dimethyl-4a',4b',5',8',8a',9',10',10a'-octahydro-2'H,6'H-dispiro[[1,3]dioxolane-2,7'-phenanthrene-1',2''-[1,3]dithiane]

(3S,5R,8R,9S,10S,13R,14S)-3-((tert-butyldimethylsilyl)oxy)-10,13-dimethyl-17-methylenehexadecahydro-14H-cyclopenta[a]phenanthren-14-ol

(1S,4aS,4bS,7S,8aR,10aR)-1-(but-3-yn-1-yl)-7-((tert-butyldimethylsilyl)oxy)-2,4b-dimethyl-1,4,4a,4b,5,6,7,8,8a,9,10,10a-dodecahydrophenanthren-1-ol

(3S,5R,8R,9S,10S,13R,14S,17R)-3-(tert-Butyl-dimethyl-silanyloxy)-14-hydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthrene-17-carbaldehyde