【摘要】 从祁连獐牙菜(Swertia przewalskii Pissiauk.)中分得四种(口山)酮、三种(口山)酮甙和一种三萜酸,通过化学法、光谱法和已知品的比较鉴定为:1,8-二羟基-3,7-二甲氧基咄酮(Ⅰ);1,7-二羟基-3,8-二甲氧基咄酮(Ⅱ);齐墩果酸(Ⅲ);1-羟基-3,7,8-三甲氧基咄酮(Ⅳ);1,7,8-三羟基-3-甲氧基咄酮(Ⅴ);8-O-[β-D-吡喃木糖-(1-6)-β-D-吡喃葡萄糖]-1,7-二羟基-3-甲氧基(口山)酮(Ⅵ);1-O-[β-D-吡喃木糖-(1—6)-β-D-吡喃葡萄糖]-7,8-二羟基一3一甲氧基(口山)酮(Ⅶ);1-O-[β-D-吡喃木糖-(1—6)-β-D-吡喃葡萄糖-8-羟基-3,7-二甲氧基咄酮(Ⅷ)。更多还原

【Abstract】 Seven xanthonenoid compounds and a triterpenic acid have been isolated from Swertia przewalskii Pissjauk. Their structures were identified as 1,8-dihydroxy-3,7-dimethoxyxarthone (Ⅰ), 1,7-dihydroxy-3,8-dimethoxyxanthone (Ⅱ), oleanolic acid (Ⅲ), 1-hydroxy-3,7,8-trime-thoxyxanthone (Ⅳ), 1,7,8-trihydroxy-3-methoxyxanthone (Ⅴ), 8-0-[β-D-xylopyranosyl-(1—6)-β-D-glucopyranosyl]-1,7-dihydroxy-3-methoxyxanthone (Ⅵ), 1-O-[β-D-xylopyranosyl-(1-6)-β-D-glucopyranosyl]-7,8-dihydroxy-3-methoxyxanthone (Ⅶ) and 1-O-[β-D-xylopyranosyl-(1-6)-β-D-glucopyranosyl]-8-hydroxy-3,7-dimethoxyanthone (Ⅷ)respectively, by means of chemical and spectral methods or comparing with the authentic samples directly.更多还原