北五味子有效成分的高效液相层析测定

本文报道了用高效液相层析测定北五味子种子中有效成分的方法。生药用己烷提出有效成分,再转移至甲醇中,在YWG-C₁₈H₃₅(十八烷基键合相)柱上,用77%甲醇作流动相,各成分能很好分离。以联苯作内标,用峰高比测定了其中五味子酯甲与酯乙、醇甲、醇乙、甲素、乙素及丙素的含量。用本法测定了不同地区生长的北五味子及五味子属其它几种植物(红花、华中、翼梗五味子)种子中有效成分的含量。本法简便、快速、重现性好,而且样品用量少。

HIGH PERFORMANCE LIQUID CHROMATOGRAPHIC ANALYSIS OF ACTIVE INGREDIENTS OF SCHIZANDRA

Fruetus Schizandrae, the dried fruit of Schizandra chinensis Baill, is a widely used traditional Chinese drug which recently has been used for the treatment of hepatitis. Seven pharmacologically active compounds with marked efficacy in lowering the elevated SGPT levels have been isolated from the kernels. Because of the need to evaluate the quality of the drug, a HPLC method was developed to analyze the active ingredients in the kernels.The procedure is as follows: Macerate 100mg of powdered sample with 5ml hexane. Vapourize 4 ml of supernatent hexane layer to dryness. Extract the residue repeatedly with methanol and put the methanolic extract into a 2 ml volumetric flask. After adding a certain amount of diphenyl (internal standard), make to volume with methanol.Inject 1～3μl of the methanol solution on an oetadecylsilane bonded stationary phase column (30cm×5mm i.d.). Run the chromatogram with 77% methanol as the mobile phase, using a 254 nm detector. By this procedure, the active constituents, Wuweizisu C, Wuweizisu B (γ-schizandrin), Wuweizisu A (deoxyschizandrin), Wuweiziehun B, Wuweizichun A (schizandrin), Wuweizi ester A and Wuweizi ester B, were separated successfully, except the last two compounds which behaved as one compound peak. The quantity of each compound is determined by the ratio of peak heights.Some samples obtained from various sources and other species of this genus were analyzed by this method.