藏药镰形棘豆中黄酮类化学成分研究

目的：对藏药镰形棘豆Oxytropis falcata的黄酮类化学成分进行研究。方法：通过正相硅胶柱色谱,Sephadex LH-20柱色谱,ODS反相色谱分离﹑纯化,用NMR,MS鉴定结构。结果：从镰形棘豆的氯仿萃取部分分离鉴定了8个黄酮类化合物,分别为2′,4′-二羟基-4-甲氧基查尔酮(1),2′,4′-二羟基查尔酮(2),5,7-二羟基-4′-甲氧基黄酮醇(3),7-羟基-4′-甲氧基二氢黄酮(4),3′,7-二羟基-2′,4′-二甲氧基异黄烷(5),2′-羟基-4′-甲氧基查尔酮(6),2′-甲氧基-4′-羟基查尔酮(7),2′,4′-二羟基二氢查尔酮(8)。结论：这些化合物均为首次从该植物中分离得到。

Studies on flavonoids of Oxytropis falcata

OBJECTIVE: To investigate the flavonoids of Oxytropisfalcata. METHOD: Compounds were isolated by column chromatography using silica gel, Sephadex LH -20 and ODS as the adsorbents. Their structures were elucidated by NMR and MS spectroscopic data. RESULT: Eight compounds were isolated and elucidated as 2', 4'-dihydroxy-4-methoxy chalcone (1), 2', 4'-dihydroxy chalcone (2), 5,7-dihydroxy-4'-methoxy flavonol (3), 7-hydroxy-4'-methoxy flavanones (4), 3', 7-dihydroxy-2',4'-dimethoxy isoflavan (5), 2'-hydroxy-4'-methoxy chalcone (6), 2'-methoxy-4'-hydroxy chalcone (7), 2',4'-dihydroxy dihydrochalcone (8). CONCLUSION: All compounds were obtained from O. falcata for the first time.