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从辽宁产人参(Panax ginseng C.A.Meyer)新鲜根中分得17种单体成分。用化学法、IR、~1H-NMR、~(15)C-NMR、EI-MS、FD-MS 法等鉴定了其中9种化学结构,分别为β-谷甾醇、β-谷甾醇3-O-β-D-葡萄吡喃糖甙、人参皂甙 Rg_3、Rg_2、Rg_1、Re、Rc、Rb_2、Rb_1,前三种为国内首次从人参根内分得的已知成分。本文利用 Grant-Paul 加和公式归属了 daucosterinc~(13)C-NMR 谱中 C_(17)位侧链各碳的信号,利用 Asakawa 提出的达玛烷型皂甙 C_(20)位差向异构体的差值归属了 ginsenoside Rg_3的~(13)C-NMR 谱中部分碳的信号。
Seventeen monomer components were isolated from fresh roots of Panax ginseng C.A. Meyer from Liaoning. Nine chemical structures, namely β-sitosterol and β-sitosterol 3-O, were identified by chemical method, IR, 1H-NMR, 15C-NMR, EI-MS and FD-MS. -β-D-pyranoside, ginsenoside Rg_3, Rg_2, Rg_1, Re, Rc, Rb_2, and Rb_1. The first three species are known for the first time in the country from ginseng roots. In this paper, the signals of carbons in the side chain of C_(17) in the daucosterinc~(13)C-NMR spectra were assigned by using the Grant-Paul additive sum formula, and the metameromerization of the C_(20) site of the saponins of Damanthane was proposed by Asakawa. The difference in volume is assigned to the partial carbon signal in the ~(13)C-NMR spectrum of ginsenoside Rg_3.