Piperidine alkaloids from P. retrofractum Vahl. (PRPAs), including piperine, pipernonaline, and dehydropipernonaline, were isolated as the antiobesity constituents through a peroxisome proliferator-activated receptor d (PPARd) transactivation assay.
Piperidine alkaloids from P. retrofractumVahl. (PRPAs), including piperine, pipernonaline, and dehydropipernonaline, were isolated as the antiobesityconstituents through a peroxisome proliferator-activated receptor d (PPARd) transactivationassay.