Acylated Flavonoids and Phenol Glycosides from Veronica thymoides Subsp. pseudocinerea

2'')-beta-glucopyranoside (5), 3,4-dihydroxyphenethyl alcohol 8-O-beta-glucopyranoside (7), benzyl alcohol 7-O-beta-xylopyranosyl (1" --> 2')-beta-glucopyranoside (8), and (+)-syringaresinol 4'-O-beta-glucopyranoside (9). Compounds 2, 3 and 7-9 were reported for the first time in the genus Veronica. The structures of the isolates were determined by means of spectroscopic (UV, IR, 1D and 2D NMR, HR ESI-MS) methods. Isolated compounds (1-7) exhibited potent radical scavenging activity against the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical. -->

ISSN:	1522-2667 0931-7597
Přístupová URL adresa:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::117b6521c03db8c2200b80c5d18b16b0 https://doi.org/10.1002/chin.200510227
Rights:	CLOSED
Přírůstkové číslo:	edsair.doi.dedup.....117b6521c03db8c2200b80c5d18b16b0
Autor:	U. Sebnem Harput, Akito Nagatsu, Mehtap Varel, Iclal Saracoglu
Rok vydání:	2005
Předmět:	Spectrometry Mass Electrospray Ionization Magnetic Resonance Spectroscopy Spectrophotometry Infrared DPPH Stereochemistry Alcohol Plant Science Horticulture Biochemistry chemistry.chemical_compound Phenols Picrates Glucoside Glycosides Molecular Biology Flavonoids Lignan chemistry.chemical_classification Molecular Structure Microscopy Ultraviolet Biphenyl Compounds Glycoside Acetylation General Medicine Veronica Isoscutellarein Biphenyl compound chemistry Benzyl alcohol Luteolin
Zdroj:	ChemInform. 36
ISSN:	1522-2667 0931-7597
Popis:	A new acylated flavone glucoside, 3'-hydroxyscutellarein 7-O-(6''-O-protocatechuoyl)-beta-glucopyranoside (1), and a new phenol glucoside, 3,5-dihydroxyphenethyl alcohol 3-O-beta-glucopyranoside (6) were isolated from Veronica thymoides subsp. pseudocinerea together with seven known flavone, phenol and lignan glycosides; 3'-hydroxyscutellarein 7-O-(6''-O-trans-feruloyl)-beta-glucopyranoside (2), 3'-hydroxy, 6-O-methylscutellarein 7-O-beta-glucopyranoside (3), luteolin 7-O-beta-glucopyranoside (4), isoscutellarein 7-O-(6'''-O-acetyl)-beta-allopyranosyl (1''' --> 2'')-beta-glucopyranoside (5), 3,4-dihydroxyphenethyl alcohol 8-O-beta-glucopyranoside (7), benzyl alcohol 7-O-beta-xylopyranosyl (1" --> 2')-beta-glucopyranoside (8), and (+)-syringaresinol 4'-O-beta-glucopyranoside (9). Compounds 2, 3 and 7-9 were reported for the first time in the genus Veronica. The structures of the isolates were determined by means of spectroscopic (UV, IR, 1D and 2D NMR, HR ESI-MS) methods. Isolated compounds (1-7) exhibited potent radical scavenging activity against the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical.
Databáze:	OpenAIRE
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