Abstract: A new macrocyclic lactam which was named clausenlactam (1), together with known components zapoterin (2), myricetin-3-O-rhamnoside (3), ferulic acid (4), 7-hydroxycoumarin (5) and tnethylamine hydroiodide was isolated from Clausena exca.ata Burm. f. Its chemical structure was elucidated as 1, r-docosanedilactam by means of spectroscopic methods.

Key words: Rutaceae

摘要： 从臭假黄皮(Clausena excavata)叶的乙酸乙酯提取部分分离到9个化合物，化合物I为一新的大环内酰胺，经各种波谱分析，其化学结构鉴定为1，l' -二十二（碳）内二酰胺，命名为黄皮素（l）。化合物II、III、IV、V及VI分别11β-羧基黄柏酮(2)、5，7，3'，4'，5'一五羟基-3-O-鼠李糖黄酮甙(3)、阿魏酸（4）、7-羟基香豆素(5)及三乙胺氢碘酸盐。

关键词: 芸香科, 臭假黄皮, 大环内酰胺, 黄皮素, 11-β羟基黄柏酮