Patent ID: 7211696

Claim:
A compound of Formula I useful for the treatment of diseases caused by parasitic protozoa comprising: wherein R 1 and R 2 can be the same or different and are selected from the group consisting of H and C 1 –C 10 alkyl, provided that R 1 and R 2 are not both n-propyl, not H and n-propyl, and not H and 3-pentyl, or R 1 and R 2 can form a 5 or 6 membered ring containing C, N, and O, provided that the ring is not morpholino or piperydinyl; and R 3 is a sulfonamide; wherein the nitrogen atom of R 3 can substituted with C 1 –C 10 alkyl, aryl, alkylaryl, alkoxyaryl, or haloaryl.