The compound of the present invention (R)-3-hydroxy-3-(2-phenylethyl)-hexanoic acid ##STR1## is an intermediate in the preparation of the anti-AIDS compound, [R-(R*,R*)]-N-[3-[1-5,6-dihydro-4-hydroxy-2-oxo-6-(2-phenylethyl)-6-propyl -2H-pyran-3-yl]propyl]phenyl]-5-(trifluoromethyl)-2-pyridinesulfonamide.

O composto da invenção atual (## ácido do ## de R)-3-hydroxy-3-(2-phenylethyl)-hexanoic STR1 é um intermediário na preparação do composto dos anti-Dae (dispositivo automático de entrada), [ R-(R*, R*)]-N-[3-[1-5, 6-dihydro-4-hydroxy-2-oxo-6-(2-phenylethyl)-6-propyl -2H-pyran-3-yl]propyl]phenyl]-5-(trifluoromethyl)-2-pyridinesulfonamide.