【摘要】 从中药酸枣仁二氯甲烷提取部位分离得到5个结晶性化合物。经光谱和化学方法证明其中四个为羽扇烷型(lupane)五环三萜类化合物,即白桦酯酸(Ⅰ),白桦酯醇(Ⅱ),ceanothic acid(Ⅲ)和alphitolic acid(Ⅳ),一个为甾体化合物,即胡萝卜甙。后三个化合物系从酸枣仁中首次分离得到。更多还原

【Abstract】 Suan Zau Ken (the seeds of Zizyphus spinosus Hu) is a widely used Chinese traditional drag for treatment of insomnia,neurasthenia and sometimes for sleepiness caused by physical emaciation in Chinese traditional medicine.Its dichloromethane extract afforded four pentacyclic triterpenes of the lup-20(29)-en group,namely betulin (Ⅱ), betulinic acid(Ⅰ),ceanothic acid(Ⅲ),and alphitolic acid (Ⅳ),and one sterol,daucosterol (Ⅴ).Their structures were identified by the spectroscopic analysis.The later three compounds were isolated from Suan Zau Ben for the first time.更多还原