Keywords: جنگجو; Boc; tert-butyloxycarbonyl; Cbz; carboxybenzyl; CC50; half maximal cytoxicity concentration; EC50; half maximal effective concentration; EDC; N-(3-Dimethylaminopropyl)-Nâ²-ethylcarbodiimide hydrochloride; IBX; 2-iodoxybenzoic acid; Ki; inhibitory constan