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从胡椒科植物华南胡椒(Piper austrosinense C.DC.)中分离出七个成分,经光谱分析和理化常数测定,分别鉴定为N-isobutyl-3(3',4'-methylenedioxy-5'-methoxyphenyl)-2E-trimonoienamide(I)、N-isobutyl-7(3',4'-metylenedioxyphenyl)-2E,4E-heptadienamide(Ⅱ