Abstract:Phytochemical investigationof the plant Clerodendrum serratum var. amplexifolium Moldenke afford a novel condensation compound of a monoterpene acid with a monosaccharide dervative ,named serratumin A(1),and five known compounds(2-6) which have been isolated from the plant source for the first time. Their structures were chracterized by spectral methods (including 2D NMR technique).