dasymaschalon sootepense/flavonoid

OBJECTIVE To study the chemical components in the stem of Dasymaschalon rostratum. METHODS The components were extracted with solvent, separated and purified with chromatographic methods, identified by NMR, MS, UV, IR and physicol-chemical constants. RESULTS Three A-ring-formylated flavonoids and

Six new naturally occurring polyoxygenated cyclohexene derivatives together with eight related known derivatives, two known alkaloids, and two known flavonoid derivatives were isolated from bioassay-guided fractionation of the ethyl acetate extract of the leaves and twigs of Dasymaschalon