This invention relates to novel compounds that are 4-oxoquinoline derivatives and pharmaceutically acceptable salts thereof. More specifically, this invention relates to novel 4-oxoquinoline derivatives that are derivatives of elvitegravir. This invention also provides pyrogen-free compositions comprising one or more compounds of this invention and a carrier, and the use of the disclosed compounds and compositions in methods of treating diseases and conditions that are beneficially treated by administering an HIV integrase inhibitor, such as elvitegravir.