Flavonol glycosides from the flowers of Carthamus tinctorius and their anti-diabetic activity
Bo-Ram Choi,
Hyoung-Geun Kim,
Yoon Hee Nam
et al.
Abstract:The flowers of Carthamus tinctorius (Safflower) were extracted with 80% aqueous methanol (CTex) and the concentrates were partitioned into EtOAc (CTE), n-BuOH (CTB), and H 2 O (CTW) fractions. Repeated silica gel (SiO 2 ) and octadecyl silica gel column chromatographies for the EtOAc and n-BuOH fractions led to isolation of four flavonol glycosides. Nuclear magnetic resornance, infrarad spectroscopy, and mass spectroscopy revealed the chemical structure of the isolated compounds, astragalin (1), isoquercetin (… Show more
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