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研究了日本旋复花(Inula britannica subsp. japonica)中抗肝炎成分的分离和鉴定。①活性成分的分离:旋复花的花朵以甲醇(3L×5)回流提取,甲醇提取物(IB-1)经氯仿-水分配层析,得氯仿可溶部分(IB-3)。活性部分IB-3含5种物质(R_f=0.76,0.47,0.34,0.17,R_f<0.17),IB-3经硅胶柱层析,以正己烷-二氯甲烷(1:1)洗脱,洗脱液经TLC
The isolation and identification of anti-hepatitis components in Inula britannica subsp. japonica were studied. Isolation of active ingredients: The flowers of inflorescences were extracted by refluxing with methanol (3L×5). The methanol extract (IB-1) was chromatographed with chloroform-water to give chloroform-soluble fractions (IB-3). The active fraction IB-3 contains 5 substances (R_f=0.76, 0.47, 0.34, 0.17, R_f<0.17). IB-3 was chromatographed on a silica gel column eluting with n-hexane-dichloromethane (1:1). Liquid removal by TLC