目的:建立HPLC同时测定了哥王中伞形花内酯、西瑞香素-7-O-β-D-葡萄糖苷、triumbelletin、西瑞香素含量的方法.方法:采用依利特Hypersil-ODS色谱柱(4.6 mm ×200 mm,5μm),流动相乙腈-0.1%磷酸水溶液梯度洗脱,检测波长345 nm,流速1.0 mL·min-1,柱温30℃,进样量20 μL.比较9个产地了哥王中4种香豆素含量的差异.结果:伞形花内酯、西瑞香素-7-O-β-D-葡萄糖苷、triumbelletin、西瑞香素线性范围分别为0.070~0.770(r=0.9999),0.190 ~2.09(r =0.9999),0.765~8.42(r =0.9998),4.08 ~44.9 mg·L-1(r =0.9999),平均回收率分别为98.0% (RSD 1.9%),96.6% (RSD 1.2%),96.5% (RSD 1.7%),101.3% (RSD 1.1%).不同产地了哥王中triumbelletin和西瑞香素含量明显高于伞型花内酯和西瑞香素-7-O-β-D-葡萄糖苷,伞形花内酯和西瑞香素含量差异较小,西瑞香素-7-O-β-D-葡萄糖苷和triumbelletin含量差异较大,其中云南产地2的西瑞香素-7-O-β-D-葡萄糖苷含量最高,四川产地的含量最低;江西产地的triumbelletin含量最高,云南产地1、广西产地3和贵州产地均未测到triumbelletin.结论:该方法简便、快速、准确,可作为了哥王药材的质量控制方法.
Objective:To establish a reversed-phase high performance liquid chromatographic method for simultaneous determination of 4 coumarins (umbelliferone,daphnoretin-7-O-β-D-glucoside,triumbelletin and daphnoretin) in Wikstroemia indica.Method:Chromatographic separation was performed on an Elite HypersilODS column (4.6 mm × 200 mm,5 μm) with a gradient elution of acetonitrile-0.1% phosphoric acid aqueous solution as mobile phase,UV detection wavelength was set at 345 nm,flow rate was 1.0 mL · min-1,column temperature was maintained at 30 ℃ and injection volumn was 20 μL.Difference of four coumarins in W.indica from nine regions was compared.Result:All the standard compounds showed a good linearity in the range of 0.070-0.770 (r=0.9999),0.190-2.09 (r =0.9999),0.765-8.42 (r=0.9998),4.08-44.9 mg·L-1(r =0.9999) for umbelliferone,daphnoretin-7-O-β-D-glucoside,triumbelletin and daphnoretin,respectively.Under these conditions,the average recoveries of these four coumarins were 98.0%,96.6%,96.5%,101.3%,respectively and RSD were 1.9%,1.2%,1.7%,1.1%,respectively.Contents of triumbelletin and daphnoretin were significantly higher than umbelliferone and daphnoretin-7-O-β-D-glucoside in W.indica from nine regions,difference between umbelliferone and daphnoretin was small,but difference between daphnoretin-7-O-β-D-glucoside and triumbelletin was big,the content of daphnoretin-7-O-β-D-glucoside was highest from Yunnan region2,Sichuan region was the lowest; The content of triumbelletin was highest from Jiangxi origin,but this ingredient was not detected from Yunnan region1,Guangxi origin3 and Guizhou origin.Conclusion:This developed method was accurate,sensitive and reproducible,it could be successfully applied to quality control of W.indica.