Two new and two known diarylheptanoids were isolated from the rhizomes of Alpinia officinarum HANCE (Zingiberaceae). The structure of the new compounds was determined to be 1, 7-diphenylhept-4-en-3-one (1) and 7-(4"-hydroxy-3"-methoxyphenyl)-1-phenylhept-4-en-3-one (3) on the basis of the spectral data and chemical correlation.
