The compound 3,3,3-trifluoro-N-((1,4-trans)-4-((3-((S)-2-methyl-morpholino)-1H-pyrazolo[3,4-d]pyrimidin-6-yl)amino)cyclohexyl)propane-1-sulfonamide, having the Formula(I): or a salt thereof, its opposite enantiomer, compositions comprising the compound and its use in the treatment or prevention of leishmaniasis, particularly visceral leishmaniasis.具有式(I)之化合物3,3,3-三氟-N-((1,4-反式)-4-((3-((S)-2-甲基嗎福啉基)-1H-吡唑并[3,4-d]嘧啶-6-基)胺基)環己基)丙-1-磺醯胺：或其鹽，其相反的鏡像異構物，包括此化合物之組成物以及其治療或預防利什曼病(leishmaniasis)，特別是內臟利什曼病之用途。
