| abstract |
Various embodiments relate to a compound of the formula (I): wherein X, X 1 , R 1 -R 4 and R 7 are defined herein, as well as pharmaceutical compositions comprising compounds of the formula (I) and methods of treating an HIV infection comprising administering a therapeutically effective amount of one or more compounds of formula (I), or a pharmaceutical compositions comprising compounds of the formula (I), to a patient in need thereof. |