4-Hydroxy-5,6-dihydropyranone deriv. 5-Trifluoromethyl-N-[3-(R or S)-[1-(4-hydroxy-2-oxo-6(R or S)-phenethyl-6(R or S)-n-propyl-5,6-dihydro-2H-pyran-3-yl)-2,2-dimethylpropyl]-phenyl]-2-pyridinesulfonamide AIDS-059124 AIDS059124