A transition-state analogue of a renin inhibitor at the scissile site, a dihydroxyethylene isostere of cyclohexylalanine amide, (2j5,3j{,4S_)-4-amino-5-cyclohexyl-l-morpholino-2,3-pentanediol(ACMP), was synthesized from 1,2:5,6-di-O-isopropylidene-oc-D-allofuranose stereospecifically.