FLAVONOIDS FROM THE AERIAL PARTS OF ALHAGI CANESCENS OF THE FLORA OF UZBEKISTAN
Abstract
The aim of this work is the phytochemical research had not previously studied camel's-thorn species – Alhagi canescens – (greyish camel’s-thorn). The species is distributed in the territory of Uzbekistan, Tajikistan, Turkmenistan, Afghanistan and in southern Kazakhstan, in Kyzylkum, Karakum desert, the valleys of the rivers Syrdarya and Amudarya, Syrdarya Karatau, South-Western Tien Shan and South Pamir-Alai.
Phenolic compounds from the aerial part (stems, leaves, thorns and flowers) of Alhagi canescens (Regel) B. Keller & Shap. - (camel's-thorn, family Fabaceae) growing in Uzbekistan were studied. For the first time from this type of camel's-thorn by column chromatography of the ethyl acetate fraction of water-ethanol extract sequentially isolated following active flavonoids: kaempferol (0,054 g, 0,22% in terms of the dry weight of the ethyl acetate extraction), quercetin (0,065 g, 0,26%) isorhamnetin (0,072 g, 0,29%), chrysosplenetin (0,082 g, 0,33%), (+)-catechin (0,022 g; 0,09%), (-)-epigallocatechingallate (0,026 g, 0,10%) isoquercitrin (0,087 g, 0,35%), isorhamnetin-3-O-b-D-glucopyranoside (0,175 g, 0,7%), narcissin (0,212 g, 0,85%) and rutin (0,108 g, 0,43%). The isolated flavonoids identified by spectral methods (IR-, UV- and NMR spectra) and by comparison with known authentically samples.
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