紫红獐牙菜(Swertia punicea Hemsl)系龙胆科(Gentianaceae)獐牙菜属植物。分布于去南、四川、贵州、湖北、湖南等省。民间全草入药,具清肝利胆,除湿清热功效,治急性黄疸型肝炎,胆囊炎等。国内外至今尚未见有关其化学成分的报道。我们从紫红獐牙菜乙醇提取物中分得五个(口山)酮类成分,经光谱分析及化学反应,鉴定为芒果甙(mangiferin,1,3,6,7-四羟基(口山)酮-2-C-β-D-吡喃葡萄糖甙,Ⅰ),bellidifodin(1,5,8-三羟基-3- Swertia punicea Hemsl is a genus of Gentianaceae. Distribution in the South, Sichuan, Guizhou, Hubei, Hunan and other provinces. The whole folk medicine is used for medicine, with clear liver and gallbladder, dehumidification and heat elimination effect, treatment of acute icteric hepatitis, cholecystitis and so on. Domestic and foreign countries have not yet seen reports on their chemical composition. We extracted five (keyama) ketones from the ethanol extract of Scutellaria purpurea and identified them as mangiferin (1,3,6,7-tetrahydroxyl) by spectral analysis and chemical reaction. Keto-2-C-β-D-glucopyranoside, I), bellidifodin (1,5,8-trihydroxy-3-one