香茅中一个新羊毛脂烷类三萜化合物

A new lanostane-type triterpenoid from Cymbopogon citratus

研究香茅Cymbopogon citratus的化学成分。采用硅胶,Sephadex LH-20和高效液相色谱法从中分离得到8个化合物,包括1个新化合物,通过理化性质和波谱数据分析鉴定其结构分别为3β-甲氧基羊毛甾-9（11）-烯-27-醇（1）,3β-羟基羊毛脂-9（11）-烯（2）,（24S）-3β-甲氧基羊毛甾-9（11）,25-二烯-24-醇（3）,8-羟基-新薄荷醇（4）,（2E）-3,7-二甲基-2,7-辛二烯-1,6-二醇（5）,（＋）-香茅醇（6）,7-羟基薄荷醇（7）和十九烷酸乙酯（8）。其中化合物1为新化合物,化合物2~3为首次从该植物中分离得到。

To study the chemical constituents of Cymbopogon citratus,isolation and purification of constituents were carried out on silica gel,Sephadex LH-20 and prepatative HPLC.The structures of the compounds were identified by physicchemical properties and spectral data analysis.Eight compounds were isolated and identified as 3β-methoxy lanosta-9（11）-en-27-ol（1）,3β-hydroxylanosta-9（11）-en（2）,（24S）-3β-methoxylanosta-9（11）,25-dien-24-ol（3）,8-hydroxyl-neo-menthol（4）,（2E）-3,7-dimethyl-2,7-octadiene-1,6-diol（5）,（ ＋）-citronellol（6）,7-hydroxymenthol（7）and ethyl nonadecanoate（8）.Compounds 1 is a new one.Compounds 2-3 are obtained from C.citratus for the first time.