明党参是一种常用中药,为伞形科植物明党参(Changium sm vrnioides H. Wolff.)的根。具有补气生津、和胃解毒、润肺化痰、养阴和胃、强壮筋骨的功效。明党参的化学成分目前尚未见文献报道。我们采用乙醇提取、薄层分离和柱层析方法,分离得到3个化合物。根据熔点、紫外、红外、核磁、质 Ming Dangshen is a commonly used Chinese medicine and is the root of the Changxing sm vrnioides H. Wolff. It has the effect of replenishing vital gas, detoxifying the stomach, lungs and phlegm, nourishing yin and stomach, and strengthening bones and muscles. The chemical constituents of Radix Codonopsis have not yet been reported in the literature. We used ethanol extraction, thin layer separation and column chromatography to separate three compounds. Based on melting point, ultraviolet, infrared, nuclear magnetic, quality