A compound of Formula (I), or a salt thereof, compositions comprising the compound, processes for its preparation and its use in therapy, for example in the treatment of parasitic diseases such as Chagas disease, Human African Trypanosomiasis (HAT), Animal African trypanosomiasis (AAT) and leishmaniasis, particularly visceral leishmaniasis (VL).一種式(I)化合物或其鹽,包含該化合物的組成物、其製備方法及其在治療上的用途,例如在治療寄生蟲疾病如查加斯氏症、人類非洲錐蟲病(HAT)、動物非洲錐蟲病(AAT)和利什曼原蟲症,尤其是內臟型利什曼原蟲症(VL)的用途。