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Profiling the phenolic compounds of Artemisia pectinata by HPLC‐PAD‐MS n
Author(s) -
Ma ChaoMei,
Hattori Masao,
Chen HuBiao,
Cai ShaoQing,
Daneshtalab Mohsen
Publication year - 2008
Publication title -
phytochemical analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 72
eISSN - 1099-1565
pISSN - 0958-0344
DOI - 10.1002/pca.1045
Subject(s) - chemistry , quinic acid , glycoside , artemisia , chromatography , high performance liquid chromatography , stereochemistry , organic chemistry , botany , biology
An HPLC‐PAD‐MS n method was employed to profile the phenolic compounds of the aerial part of Artemisia pectinata ( Neopallasia pectinata ), a plant with no previous reports concerning its phenolic constituents. Three isomers of trans ‐caffeoylquinic acid accompanied by cis ‐5‐caffeoylquinic acid, six isomers of trans ‐dicaffeoylquinic acid, two isomers of methyl trans ‐dicaffeoylquinate (including one new isomer), a trans ‐caffeoylferuloylquinic acid and three flavanoids were identified unambiguously by analysis of their UV and MS n spectra in comparison with standard compounds that were isolated from natural sources, or synthesised, or were surrogate standards (green coffee extract). Other compounds were identified by analysis of their UV and MS n data in comparison with those reported in the literature. MS n experiments also suggested the presence of groups of dicaffeoylquinic acid glycosides, caffeoylquinic acid diglycosides, caffeoylquinic acid glycosides and quinic acid diglycosides. Copyright © 2007 John Wiley & Sons, Ltd.