Research Progress in HIV and Mycobacterium tuberculosis Inhibitors Containing Sulfonamide Moiety

Figure 9

Structures of 7-(but-2-yn-1-yl)-1-(3,4-difluorobenzyl)-3-methyl-8-(piperazin-1yl)-3,7-dihydro-1H-purine-2,6-dione amide derivatives.