Abstract
Nine species from the genus Stachys L. representing subgenera Stachys and Betonica were surveyed for flavonoid glycosides by means of HPLC coupled to diode-array detection and LC-APCI-MS. Those species belonging to subgenus Betonica were characterised by the presence of glycosides of tricetin methyl ethers, including a new derivative, which was isolated from S. scardica Griseb. and identified as tricetin 3',4',5' -trimethyl ether 7-O-beta-glucopyranoside by spectroscopic methods. This type of flavonoid was absent from species belonging to subgenus Stachys and can be considered as a chemosystematic marker for subgenus Betonica.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Chromatography, High Pressure Liquid / methods
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Chromones / chemistry*
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Chromones / isolation & purification
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Ethers / chemistry
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Ethers / isolation & purification
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Flavonoids / chemistry
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Flavonoids / isolation & purification
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Glycosides / chemistry*
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Glycosides / genetics*
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Glycosides / isolation & purification
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Mass Spectrometry / methods
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Molecular Structure
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Nuclear Magnetic Resonance, Biomolecular
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Species Specificity
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Spectrophotometry, Ultraviolet
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Stachys / chemistry*
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Stachys / classification*
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Stachys / genetics
Substances
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Chromones
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Ethers
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Flavonoids
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Glycosides
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tricetin