(1R,2S,4S,5'R,6R,7S,8R,9S,12S,13R,16S,18R)-16-[(2R,3R,4S,5R,6R)-5-methoxy-6-(methoxymethyl)-3,4-bis[[(2S,3R,4S,5R,6R)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy]oxan-2-yl]oxy-5',7,9,13,18-pentamethylspiro[5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icosane-6,2'-oxane] 生成
methyl 4,6-di-O-methyl β-D-glucopyranoside