sodium;[(2R,3R,4S,5S)-4-hydroxy-3-methoxy-5-[(3S,6R)-2-methyl-6-[(3S,5S,6S,8S,9R,10S,13R,14S,15R,17R)-3,6,8,15-tetrahydroxy-10,13-dimethyl-1,2,3,4,5,6,7,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-17-yl]heptan-3-yl]oxyoxolan-2-yl]methyl sulfate 、
4-溴苯甲酰氯 生成
methyl 3-O-methyl-2,4-di-O-(p-bromobenzoyl)-α-D-xylopyranoside