The composition of flavonoids (glycosides) isolated from leaves of Serratula coronata L. s. l. (crowned saw-wort) growing in Primorsky Krai was investigated. Liquid extraction and preparative column chromatography isolated for the first time the flavonoids 3-methylquercetin-3′-O-β-D-glucuronopyranoside [5-(5,7-dihydroxy-3-methoxy-4-oxo-4H-chromen-2-yl)-2-hydroxyphenylhexopyranosideuronic acid] and quercetin- 3′-O-β-D-glucuronopyranoside [2-hydroxy-5-(3,5,7-trihydroxy-4-oxo-4H-chromen-2-yl)phenylhexopyranosideuronic acid]. The structures of the isolated compounds were elucidated and proved using UV and NMR spectroscopy and mass spectrometry with electrospray ionization. The flavonoid 3-methylquercetin-3′-O-β-D-glucuronopyranoside was new and not previously described in the literature. S. coronata grows abundantly in Primorsky Krai and could be considered a renewable and promising source for producing flavonoids.
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Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 51, No. 2, pp. 23 – 27, February, 2017.
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Myagchilov, A.V., Sokolova, L.I., Gorovoi, P.G. et al. New Flavonoids from Serratula coronata L.. Pharm Chem J 51, 119–123 (2017). https://doi.org/10.1007/s11094-017-1568-5
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DOI: https://doi.org/10.1007/s11094-017-1568-5