(R)-4-((3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-3-Benzyloxy-7,12-dihydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-pentanoic acid methyl ester 、
phenyl 2,3,4,6-tetra-O-benzyl-1-sulfinyl-α/β-D-glucopyranoside 在
palladium dihydroxide 2,6-二叔丁基-4-甲基吡啶 、
氢气 、
三氟乙酸 作用下,
生成 (R)-4-[(3R,5R,7R,8R,9S,10S,12S,13R,14S,17R)-3-Benzyloxy-10,13-dimethyl-7,12-bis-((2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-hexadecahydro-cyclopenta[a]phenanthren-17-yl]-pentanoic acid methyl ester