4-Hydroxy-5,6-dihydropyranone deriv. 5-Trifluoromethyl-N-[3-(R)-[1-(4-hydroxy-2-oxo-6,6-di-n-propyl-5,6-dihydro-2H-pyran-3-yl)-propyl]-phenyl]-2-pyridinesulfonamide AIDS-059115 AIDS059115 U-140135