SOME FLAVONOIDS THE LEAVES OF COMBRETUM QUADRANGULARE GROWING IN VIETNAM

Abstract

The leaves of Combretum quadrangulare Kurz. collected in Long An Province were chemically investigated using multiple chromatographic methods. Four compounds, 5-hydroxy-3,7,4′-trimethoxyflavone (1), ayanin (2), kamatakenin (3), and luteolin (4) were isolated and elucidated. Their chemical structures were elucidated by comparing their spectroscopic data with those in previous reports. Compounds 1 and 4 was obtained for the first time in Combretum quadrangulare.