To investigate the chemical constituents from the aerial parts of Plumbago zeylanica L. The chemical constituents were isolated by various column chromatographic methods and the structures were elucidated by various spectroscopic methods, especially 2D- NMR spectra. A new tfiterpenoid, 1β,3β,1 1α-trihydroxy-urs-12-ene （1）, together with six known compounds, androsta-l,4-diene-3,17- dione （2）, isoshinznolone （3）, neoechinulin A （4）, harman （5）, ergostadiene-3β,5α,6β-triol （6） and N-（N＇-benzoyl-S-phenylalaninyl）-S- phenylalaninol （7） were isolated from the aerial parts ofP. zeylanica. Compound 1 was a new compound, and compounds 2, 4-7 were obtained from this genus for the first time.
研究阴香种子油脂的提取工艺,从中分离并鉴定了其主要成分甘油三月桂酸酯。结果表明,阴香种子油脂的最佳提取条件为:以石油醚为溶剂,在50°C,料液比1∶7,提取40 m in,提取2次,总油脂的得率为64.2%,甘油三月桂酸酯的得率为40%。探讨了以阴香种子中甘油三月桂酸酯为原料合成甘油单月桂酸酯的方法。
