4-Hydroxy-5,6-dihydropyranone deriv. 4-Trifluoromethyl-N-[3-(R or S)-[1-(4-hydroxy-2-oxo-6,6-diphenylethyl-5,6-dihydro-2H-pyran-3-yl)-propyl]-phenyl]-2-pyridinesulfonamide AIDS-059121 AIDS059121