(1R,2S,4S,5'R,6S,7S,8R,9S,12S,13S,15R,16R,18S)-16-[(2R,3R,4S,5R,6R)-4-[(2S,3R,4S,5R)-4-[(2S,4S,5S)-2,5-dimethoxy-4-[(2S,3R,4R,5S,6S)-3,4,5-trimethoxy-6-methyloxan-2-yl]oxyoxan-2-yl]oxy-3,5-dimethoxyoxan-2-yl]oxy-3,5-dimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-5',7,9,13-tetramethylspiro[5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icosane-6,2'-oxane]-15-ol 生成
2,4-di-O-methyl-L-arabinose