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flavanone |
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No references found | Structure-activity relationships of the flavonoids demonstrated three distinct principles: (i) flavonoid-aglycons are more potent than the corresponding glycosides, (ii) flavonoids with a 4'-OH substitution in the B-ring are more potent than those with a 3'-OH-4'methoxy substitution, (iii) flavonoids of the flavone type (with a C2=C3 double bond) are more potent than those of the flavanone type (with a at C2-C3 single bond). The investigators found two major peaks in the chromatograms of the hull extracts, which they identified as luteolin and the flavanone fustin. Ten flavonol O-glycosides (based on kaempferol and quercetin), two flavanone O-glycosides (based on naringenin and eriodictyol) and three Cglycosylflavones (vitexin, vitexin 7-O-glucoside and orientin) have previously been identified by Hiraoka (Biochem. |
flavanone |
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