... European Journal of Medicinal Chemistry. ... MXFX and GTFX with grepafloxacin (GPFX) and trovafloxacin (TVFX) account for among the most powerful antiparasitical fluoroquinolones known so far (for the chemical structure of MXFX, GTFX, GPFX and TVFX, see Table 2) [22 ...