Patent ID: 7595320

Claim:
A compound of formula (I): wherein: (i) R1 is independently selected from the group consisting of —NHCO(R2), —NHCONH(R2) and —NHCOO(R2), in which R2 is independently selected from the group consisting of —H, —(C 1 -C 24 )alkyl, —(C 3 -C 9 )cycloalkyl, —(C 3 -C 9 )cycloalkylene, heterocycloalkyl, heterocycloalkylene, aryl, heteroaryl, —(C 1 -C 6 )alkyl-aryl, —(C 1 -C 6 )alkyl-heteroaryl, -aryl-(C 1 -C 6 )alkyl and heteroaryl-(C 1 -C 6 )alkyl, optionally substituted; (ii) each of the R3, R4 and R5 is independently selected from the group consisting of —H, —(C 1 -C 6 )alkyl, —(C 1 -C 6 )alkyl-aryl, —(C 1 -C 6 )alkyl-heteroaryl, -aryl and -heteroaryl, optionally substituted, or alternatively [(R3 and R4) or (R3 and R5)] are linked together to form a saturated or unsaturated, 2- to 10-membered monocyclic or bicyclic carbon heterocycle containing from 1 to 5 heteroatoms chosen from N, O and S, optionally substituted, or to form a group N═CH-aryl, said aryl being optionally substituted; or a pharmaceutically acceptable salt thereof.