- FLAVONOIDS FROM THE TWIGS OF EUCRYPHIA GLUTINOSA
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The rare dihydroquercetin 3-O-β-D-xyloside, caryatin 7-O-β-D-glucoside and the previously unknown 6-methoxylated flavonoid glycoside jaceidin 5-O-β-D-glucoside were isolated from the twigs of Eucryphia glutinosa where they co-occur with the widespread reynoutrin. Key words: Eucryphia glutinosa; Eucryphiaceae; twigs; flavonoids; dihydroquercetin 3-O-β-D-xyloside; reynoutrin; jaceidin 5-O-β-D-glucoside; caryatin 7-O-β-D-glucoside.
- Sepulveda-Boza, Silvia,Delhvi, Sualaheen,Cassels, Bruce K.
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- THREE HIGHLY OXYGENATED FLAVONE GLUCURONIDES IN LEAVES OF SPINACIA OLERACEA
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Droplet counter-current chromatographic separation and subsequent TLC demonstrated the existence of at least 14 phenolics in the leaves of Spinacia oleracea.Three have now been isolated and identified, respectively, as the 4'-glucuronides of 5,7,4'-trihydroxy-3,6,3'-trimethoxyflavone (jaceidin), 5,3',4'-trihydroxy-3-methoxy-6:7-methylenedioxyflavone and 5,4'-dihydroxy-3,3'-dimethoxy-6:7-methylenedioxyflavone.Key Word Index- Spinacia oleracea; Chenopodiaceae; spinach; jaceidin; 4'-glucuronide; 5,3',4'-trihydroxy-3-methoxy-6:7-methylenedioxyflavone 4'-glucuronide; 5,4'-dihydroxy-3,3'-dimethoxy-6:7-methylenedioxyflavone 4'-glucuronide; 1H NMR; 13C NMR; FABMS.
- Aritomi, Masakazu,Kawasaki, Toshio
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