OBJECTIVETo study the chemical constituents of Angelica sinensis.

METHODThe constituents were separated by chromatographic methods, and their structures were identified on the basis of spectroscopic analysis.

RESULTEight compounds were isolated and identified as levistolide A (1), senkyunolide O (2), (3Z, 3Z')-6.8', 7.3'-diligustilide (3), tokinolide B (4), isotokinolide B (5), (3'Z)-(3R, 8S, 3a'R, 6'S)-3, 3a': 8, 6'-biligustilide (6), E, E'-3. 3', 8. 8'-diligustilide (7) and E, E'-3. 3', 8. 8'-isodiligustilide (8), which are all diligustilides.

CONCLUSIONCompound 7 was obtained from the plant for the first time; compounds 6 and 8 are new compounds.