剑叶血竭素国产血竭中一个新的二聚查耳酮

目的　研究国产商品血竭的活性成分。方法　用甲醇提取,SephadexL-20，MCIgel和硅胶柱色谱进行分离纯化,用现代波谱学方法进行结构鉴定。结果　从国产雨林牌血竭的甲醇浸提物中得到9个查耳酮化合物,分别鉴定为:1-［5-(2,4,4′-三羟基二氢查耳酮基)］-1-对羟基苯基-3-(2-甲氧基-4-羟基苯基)-丙烷(1),2′-methoxysocotrin-5′-ol(2),socotrin-4′-ol(3),2-甲氧基-4,4′-二羟基二氢查耳酮(4),2,4,4′-三羟基二氢查耳酮(5),2,4,4′-三羟基-6-甲氧基二氢查耳酮(6),2′,4′,4-三羟基查耳酮(7),2-甲氧基-4,4′-二羟基查耳酮(8),2′-甲氧基-4′,4-二羟基查耳酮(9)。结论　1为一新的查耳酮二聚体,命名为剑叶血竭素(cochinchinenin),2-9为首次从该血竭中分离得到。

Cochinchinenin--a new chalcone dimer from the Chinese dragon blood]

AIM: To study the active constituents of Dracaena cochinchinensis (Lour.) S.C. Chen. in the commercial dragon blood. METHODS: Various column chromatographies with Sephadex L-20 gel, MCI gel and silica gel were employed for the isolation and purification. The structures of compounds were elucidated by spectral analysis. RESULTS: Nine chalcones were isolated from the commercial dragon's blood which was made of D. cochinchinensis (Lour.) S.C. Chen.. By means of spectral data, they were identified as 1-5-(2,4,4'-trihydroxydihydrochalconyl)]-1- (p-hydroxyphenyl)-3-(2-methoxy-4-hydroxy-phenyl)-propane (1), 2'-methoxysocotrin-5'-ol (2), socotrin-4'-ol (3), 2-methoxy-4, 4'-dihydroxydihydrochalcone (4), 2, 4, 4'-trihydroxy-dihydrochalcone (5), 2, 4, 4'-trihydroxy-6-methoxydihydrochalcone (6), 2', 4', 4-trihydroxychalcone (7), 2-methoxy-4, 4'-dihydroxychalcone (8) and 2'-methoxy-4', 4-dihydroxychalcone (9). CONCLUSION: Compound 1 is a new chalcone dimer and named as cochinchinenin. Compounds 2-9 were isolated from D. cochinchinensis (Lour.) S.C. Chen. for the first time.