甲醇 、 uscharidin 以
水 为溶剂,
生成 methyl (2S,3R,5R)-3-hydroxy-5-methyl-2-[[(2R,3R,5S,8R,9S,13R,14S,17R)-2,10,14-trihydroxy-13-methyl-17-(5-oxo-2H-furan-3-yl)-1,2,3,4,5,6,7,8,9,11,12,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-yl]oxy]oxolane-3-carboxylate 、 methyl (2S,3R,5R)-2-[[(2R,3R,5S,8R,9S,13R,14S,17R)-10-hydroperoxy-2,14-dihydroxy-13-methyl-17-(5-oxo-2H-furan-3-yl)-1,2,3,4,5,6,7,8,9,11,12,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-yl]oxy]-3-hydroxy-5-methyloxolane-3-carboxylate 、
calactinic acid methyl ester 、
19-carboxycalactic acid methyl ester