PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11297865-0 2001 Inhibitory effects of xanthones on platelet activating factor receptor binding in vitro. Xanthones 22-31 platelet-activating factor receptor Oryctolagus cuniculus 35-70 11297865-1 2001 Nine naturally occurring xanthones were investigated for their platelet activating factor (PAF) receptor binding inhibitory effects using rabbit platelets. Xanthones 25-34 platelet-activating factor receptor Oryctolagus cuniculus 63-104 11297865-3 2001 The prenyl group at C-2, the dimethylprop-2-enyl group at C-4 and the hydroxyl group at C-5 are all beneficial to the binding of xanthones to the PAF receptor. Xanthones 129-138 platelet-activating factor receptor Oryctolagus cuniculus 146-158 11297865-4 2001 The results revealed that xanthones can represent a new class of natural PAF receptor antagonists. Xanthones 26-35 platelet-activating factor receptor Oryctolagus cuniculus 73-85