目的 建立HPLC-DAD法同时测定并比较分析陇西地区防风类药材中升麻素苷、5-O-甲基维斯阿米醇苷、升麻素、亥茅酚苷、补骨脂素、欧前胡素、佛手苷内酯、花椒毒素的量。方法 采用甲醇回流法得到提取物，HPLC-DAD法测定提取物中8种成分量，乙腈-水梯度洗脱，体积流量1.0 mL/min，检测波长为254 nm，柱温为30 ℃。结果 8种成分的回归方程r值均在0.999 2～0.999 9，平均加样回收率在96.2%～104.1%，RSD均＜3%。防风中以4种色原酮为主要成分，同时含有4种香豆素；葛缕子及白花前胡中未检测到色原酮，而香豆素量均高于防风。结论 该方法简便、准确，重复性好，可用于防风类药材中8种成分的测定。陇西地区的2种习用防风从8种主要成分量上看不能代替防风使用。

Objective To develop an HPLC-DAD method for the simultaneous determination and comparative analysis on the contents of prim-O-glucosylcimifugin, 4′-O-β-D-glucosyl-5-O-methylvisamminol, cimifugin, sec-O-glucosylhamaudol, psoralen, imperatorin, bergapten, and xanthotoxin in the roots of Saposhnikovia divaricata from Longxi areas. Methods The extracts were obtained by methanol reflux method and the contents of the eight compounds were determined by HPLC-DAD. The mobile phase, consisting of acetonitrile-water, was programmed for a gradient elution. The flow rate was 1.0 mL/min, the detection wavelength was 254 nm, and the column temperature was 25 ℃. Results Excellent linearity with correlation coefficents (r) of 0.999 2—0.999 9 was obtained. The average recoveries of the eight compounds were 96.2%—104.1% and all RSD values were less than 3%. The contents of the four coumarins in the roots of S. divaricata were much less than those four chromones. The contents of the four coumarins in the roots of Carum carvi and Peucedahum ledebourielloides were more than those in S. divaricta, while no chromones were detected except sec-O-glucosylhamaudol in P. ledebourielloides. Conclusion The method appears to be simple, accurate, and well reproducible, which could be used for the simultaneous determination of the above-mentioned eight compounds in S. divaricata. According to the above analysis, C. carvi and P. ledebourielloides could not be used as the succedaneum of S. divaricata on the basis of the eight compound contents.

国家科技支撑项目（2011BAI03B01）