Studying of flavonoids in the leaves of Holarrhena antidysenterica Wall

ABSTRACT

The study on Holarrhena antidysenterica Wall was carried out in Chi Linh (Hai Duong province) in September 2004. Leaves of Holarrhena antidysenterica Wall were collected, dried, grilled to powder, then extracted and isolated flavonoid. Two flavonoids were isolated, on the base of m.p, UV, IR, MS, 1H-NMR, 13C-NMR, DEPT analyses, they were identified as Kaempferol and Quercetin. This is the first time the flavonoids were reported as a substance isolated from Holarrhena antidysenterica Wall in Vietnam