| Structure Identification: |
| Journal of Chromatography A, 1998, 810(1–2):71-79. | | Liquid chromatographic-electrospray mass spectrometric study of Angelica sinensis and chemical changes of Z-ligustilide[Reference: WebLink] |
High-performance liquid chromatography–electrospray ionization–mass spectrometry has been applied to analyze the chemical constituents of Danggui (the rhizome of Angelica sinensis) and to study chemical changes of Z-ligustilide.
METHODS AND RESULTS:
Twelve phthalides were unambiguously identified as senkyunolide I (3), senkyunolide H (4), sedanenolide (8), butylphthalide (9), E-ligustilide (13), Z-ligustilide (14), Z-butylidenephthalide (15), Z,Z′-6.8′,7.3′-diligustilide (16), Angelicide (17), levistolide A (18), Z-ligustilide dimer E-232 (19) and Z,Z′-3.3′,8.8′-diligustilide (20) in Danggui extract. The existence of 12 other phthalides (2, 5–7, 11, 12, 22–27), ferulic acid (1) and coniferyl ferulate (10) in Danggui extract has also been demonstrated. Phthalides 3, 4, 16–18 and 20 were determined to be the products from chemical change of Z-ligustilide.
CONCLUSIONS:
This is the first report of the existence of 16 compounds (2–8, 10–12, 20, 22–25 and 27) in Danggui extract. |
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