主要成分 |
中药化学成分 含酸性多糖,系由D-半乳糖(D-ga;actpse)32%-40%,D-甘露糖(D-mannose)10%-14%,L-石澡糖(L-fucose)13%-16%,L-鼠李糖(L-rhamnose)6%-9%,D-木糖(D-xylose)2%-7%,L-阿拉伯糖(L-arabinose)2%-3%和微量D-葡萄糖(D-glucose)所组成。还含少量维生素B12(VitaminB12)。又发现胃疡和皮肤癌的抑制因子,系由氨基酸、蛋白质、葡聚糖(glucan)和葡配甘露配甘露聚糖(glucomannan)所组成。 |
全草含有杧果甙(mangiferin),齐墩果酸(oleanolic acid),1,8-二羟基-3,5-二甲氧基呫吨酮(1,8-dihydroxy-3,5-dimethoxyxanthone),1-羟基-3,5-二甲氧基呫吨酮(1hydroxy-3,5-dimethoxyxanthone),1-羟基-3,7,8-三甲氧基呫吨酮(1-hydroxy-3,7,8-trimethoxyxanthone),8-羟基-1,3,5-三甲氧基呫吨酮(8-hydroxy-1,3,5-trimethoxyxanthone),1,8-二羟基-3,7-二甲氧基呫吨酮(1,8-dihydroxy-3, 7-dimethOxyxanthone),1,7,8-三羟基-3-甲氧基呫吨酮(1,7,8-trihydroxy-3-methoxyxanthone),1,3,8-三羟基-5-甲氧基呫吨酮(1,3,8-trihydrox-十methoxyxanthone),1,7-二羟基-3,4,8-三甲氧基呫吨酮(1,7-dihydrox-3,4,8-trimethoxyxanthone)又名芷茵陈呫吨酮(zangyinchenin)。还含苦龙甙(amarogentin),当药素(swertisin),8-0β-D-吡喃葡萄糖-1,3,5-三羟基呫吨酮(8-0-β-D-glucopyranosyl-1,3,5-trihydroxyxanthone),8-O-β-D-吡喃葡萄糖基-(1→6)-β-D-吡喃葡萄糖基〕-1,7-二羟基-3-甲氧基呫吨酮{8-O-[β-D-glucopyranosyl(1→6)-β-D-glucopyranosyl]-1,7-dihydroxy-3-methoxyxanthone},7-O-β-D-吡喃木糖基-1,8-二羟基-3-甲氧基呫吨酮(7-O-β-D-xylopyranosyl-1,8-dihydroxy-3-methoxyxanthone),70-[α-L-吡喃鼠李糖基(1→2)-β-D-吡喃木糖基]-.1,8-二羟基-3甲氧基呫吨酮{7-O-[α-L-rhamnopyrancoyl(l→2)-β-D-xy1opyranosyl]-1,8-dihydrox-3-methoxyxanthone},3-O-β-D-吡喃葡萄糖基-1,8-二羟基-5-甲氧基呫吨酮(3-O-β-D-glucopyranosyl-1,8-dihydroxy-5-methoxyxanthone)。 |