This thesis is focussed on the more clearly the chemical constituents of Oroxylum indicum Vent..the dry seeds of Oroxylum indicum Vent, were extracted by boiling alcohol (70%), and the residue was extracted by chloroform, ethyl acetate and n-BuOH sequently. These extracts were separated and purified by silica gel chromatography, polyamide chromatography, sephadex LH-20 chromatography and HPLC 12 compounds have been isolated from the plant. According to modern spectra techniques (LCMS ~1H-NMR. ...