text: Of the compounds active in the present assay system, the most potent compound 7, << platyphyllonol-5-O-β-d-xylopyranoside >>, significantly suppressed the induction of peroxisome proliferator activated receptor γ ([[ PPARγ ]] and CCAAT/enhancer binding protein α (C/EBPα) protein expression, and inhibited adipocyte differentiation induced by troglitazone, a PPARγ agonist.