apigenin-7-O-[2′′-O-(5′′′-O-feruloyl)-β-d-apiofuranosyl]-β-d-glucopyranoside (4) and chrysoeriol-7-O-[2′′-O-(5′′′-O-feruloyl)-β-d-apiofuranosyl]-β-d-glucopyranoside (5), were isolated from the whole plant of fresh celery (Apiumgraveolens), together with 10 known flavonoids. The structures of the new compounds were elucidated by analysis of spectroscopic data. The inhibitory effects of the compounds isolated