Described herein are compounds useful in the reduction of blood uric acid levels, formulations containing them and methods of making and using them. In some embodiments, a compound disclosed herein are used in the treatment or prevention of disorders related to aberrant levels of uric acid.
Compounds of formula (I):
wherein Ar, X, R
1
, R
2
, R
3
and R
4
are as defined herein. The compounds are useful as reverse transcriptase inhibitors against wild type and single or double mutant strains of HIV.