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芸香科植物九里香(Murrayapaniculata Jack)在民间用来治疗腹泻,痢疾和水肿等疾病。作者从其叶分离得二种香豆素衍生物,一种是已知的phebalosin(Ⅰ),另一种经鉴定为7-甲氧基-8(1:2-二羟基-3甲基-3丁烯基)香豆素(Ⅱ),为新的香豆素衍生物。方法及鉴定:将新鲜干燥后的九里香叶,先用60～80℃的石油醚加热提取,然后用95%乙醇冷浸。浓缩石油醚提取液,放冷,即得熔点126°的结晶,经元素分析、红外光谱、核磁共振谱和质谱分析鉴定,此化合物即(Ⅰ)。乙醇提取液浓缩后,在硅胶G柱上,用
Rutaceae plants such as Murrayapaniculata Jack are used in the private sector to treat diseases such as diarrhea, dysentery and edema. The authors isolated two coumarin derivatives from their leaves, one known phebalosin (I) and the other identified as 7-methoxy-8 (1: 2-dihydroxy- 3 butenyl) coumarin (II), a new coumarin derivative. Methods and identification: Freshly dried nine leaves, first with 60 ~ 80 ℃ petroleum ether heating extraction, and then cold soaked with 95% ethanol. Concentration of petroleum ether extract, let cool, that is, the crystallization temperature of 126 °, by elemental analysis, infrared spectroscopy, nuclear magnetic resonance and mass spectrometry identified that the compound (I). The ethanol extract was concentrated and applied to a silica gel G column