Sixty three compounds with L-arginine scaffold were designed and docked with aminopeptidase N(APN) by Sybyl/Flex X software. Sixteen new L-arginine derivatives with high docking scores were synthesized and their structures were confirmed by 1H NMR and MS. The results of in vitro anti-enzyme activity assay and in vitro antiproliferation assay showed that compound A22 exhibited comparable activity with the positive control(bestatin) and docked well with APN. So it could be used as a lead compound for the deve...