关键词: 青枣核果木, 豆甾醇, 6-甲基-1-癸醇, 木栓酮

Abstract: Chemical constituents of Drypetes cumingii were isolated through various chromatographic techniques and their structures were identified by spectroscopic data analysis and comparison with those reported in the literatures.Nine compounds were obtained from the petroleum ether and ethyl acetate extracts.Their structures were identified as steraric acid (1),stigmasterol (2), β-sitosterol(3),α-amyrin(4),6-methyl-1-decanol(5),friedelan-28-ol(6),friedelin(7),4-β-hydroxy-23-nor-friedel-3-one(8),friedelan-7-one(9).Component 5 and 6 were isolated for the first time from Drypetes, and compounds 1-4,7 and 8 were isolated from D.cumingii for the first time.

Key words: Drypetes cumingii, stigmasterol, friedelin, friedelan-28-ol