AIDS-005330 AIDS005330 Cyclohexanehexamide, .delta.-[[(2-quinolinylcarbonyl)asparaginyl]amino]-.gamma.-hydroxy-.alpha.-(1-methylethyl)-N-[2-methyl-1-[[(2-pyridinylmethyl)amino]carbonyl]butyl] U-81749E analog psi-[CHOHCH2] Asn-cHexAla Val-Ile isostere