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目的:对榕须的化学成分进行研究。方法:采用硅胶柱色谱及凝胶色谱等方法进行分离纯化,并利用理化常数和波谱数据鉴定化合物结构。结果:从榕须甲醇提取物的石油醚和醋酸乙酯萃取部位分离获得8个化合物,其中包括1个神经酰胺类化合物和3个三萜类化合物,分别为(2S,3S,4R)-2-[(2′R)-2′-羟基-二十五碳酰胺]-十七碳-1,3,4-三醇[(2S,3S,4R)-2-[(2′R)-2′-hydroxypentracosanoylamino]-heptadecane-1,3,4-triol,1],12,20(30)-乌苏二烯-3α-醇[12,20(30)-ursa-dien-3α-ol,2]、表木栓醇(epifriedelanol,3)、α-香树醇乙酸酯(α-amyrin acetate,4)、β-谷甾醇(β-sitosterol,5)、β-胡萝卜苷(β-daucostcrol,6)、二十六烷酸(hexacosanoic acid,7)和二十二烷酸(docosanoic acid,8)。结论:化合物1为新化合物,命名为榕树酰胺A;化合物2为首次从该植物中分离得到。
Purpose: To study the chemical constituents of whiskers. Methods: Silica gel column chromatography and gel chromatography were used to separate and purify the compounds. The physicochemical constants and spectral data were used to identify the structures of the compounds. Results: Eight compounds were isolated from the petroleum ether and ethyl acetate extraction fractions of methanol extract, including one ceramide compound and three triterpenoids (2S, 3S, 4R)-2. -[(2’R)-2’-Hydroxy-pentacosamide]-Hexadecan-1,3,4-triol [(2S,3S,4R)-2-[(2’R)- 2′-hydroxypentracosanoylamino]-heptadecane-1,3,4-triol,1],12,20(30)-Urisodyn-3α-ol[12,20(30)-ursa-dien-3α-ol, 2] Epifries (epifriedelanol, 3), α-amyrin acetate (4), β-sitosterol (5), β-daucostol (β-daucostcrol) 6) Hexacosanoic acid (7) and Docosanoic acid (8). Conclusion: Compound 1 is a new compound named as quercetinamide A; compound 2 was isolated from this plant for the first time.