[A new flavonoid from heartwood of Caesalpinia sappan].
Raktažodžiai
Santrauka
OBJECTIVE
To seek for new active components from Caesalpinia sappan.
METHODS
The chemical constituents were isolated and identified by means of chromatographic and spectroscopic technologies methods.
RESULTS
Nine compounds were isolated, and their structures were identified as 3, 8-dihydroxy4, 10-dimethoxy-7-oxo-[2] benzopyrano[4,3-b] benzopyran (1), 3-deoxysappanchalcone (2), sappanchalcone (3), 3-deoxysappanone B (4), rhamnetin (5), protosappanin C (6), 3, 7-dihydroxy-chroman-4-one (7), dimethyl adipate (8), daucosterin (9).
CONCLUSIONS
Compound 1 was a new compound, and compounds 7, 8 were isolated from this plant for the first time.