Piper laetispicum C.DC is one of Chinese Herbal Medicine used for alleviating depressive disorders. G11-5 [3-(3, 4-Methylenedioxy-5-trifluoromethyl phenyl)-2E-propenoic acid isobutyl amide] is synthesized based on the chemical structure of an active integrant of Piper laetispicum C.DC. The present