Glycosides of tricetin methyl ethers as chemosystematic markers in Stachys subgenus Betonica.
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.
Marin
Petar D
PD
Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, UK.
Grayer
Renée J
RJ
Grujic-Jovanovic
Slavica
S
Kite
Geoffrey C
GC
Veitch
Nigel C
NC
D002851:Chromatography, High Pressure Liquid / Q000379:methods; D002867:Chromones / Q000737:chemistry* / Q000302:isolation & purification; D004987:Ethers / Q000737:chemistry / Q000302:isolation & purification; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry* / Q000235:genetics* / Q000302:isolation & purification; D013058:Mass Spectrometry / Q000379:methods; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D013045:Species Specificity; D013056:Spectrophotometry, Ultraviolet; D031366:Stachys / Q000737:chemistry* / Q000145:classification* / Q000235:genetics
D002867:Chromones; D004987:Ethers; D005419:Flavonoids; D006027:Glycosides; C469689:tricetin