Journal
PHYTOCHEMISTRY
Volume 65, Issue 9, Pages 1247-1253Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2004.04.014
Keywords
Stachys; Betonica; lamiaceae; flavonoid glycosides; tricetin 3 ',4 ',5 '-trimethyl ether 7-O-beta-glucopyranoside; tricetin derivatives; chemosystematics
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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 LGAPCI-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. (C) 2004 Elsevier Ltd. All rights reserved.
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