Biosci Biotechnol Biochem, 2012;76(5):1038-40
The new prenylflavonoid, solophenol A (1), together with
three known compounds, bonannione A (2), sophoraflavanone A (3) and
(2S)-5,7-dihydroxy-4'-methoxy-8-prenylflavanone (4), were isolated from
propolis collected from Malaita Island in The Solomon Islands.
The structure of each compound was determined by
spectroscopic methods, including mass spectrometry and 2D NMR. Compound 1
exhibited potent 2,2-diphenyl-1-picrylhydrazyl radical-scavenging activity.
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