An alcoholic extract of the root bark of L. tulipifera which showed significant activity against the KB cell culture was systematically fractionated by solvent partitioning and column chromatography on silicic acid. Two active constituents, costunolide and a new germacranolide, tulipinolide, were isolated. Preliminary characterization of tulipinolide is described.
通过溶剂分配和
硅酸柱色谱法系统地分级显示了对郁
金香细胞具有显着活性的郁
金香L.tulipifera根皮的
酒精提取物。分离了两种活性成分,木香
酚内酯和一种新的马六甲内酯,tulipinolide。描述了郁
金香油内酯的初步表征。