Patent ID: 8691818

Claim:
A compound of general formula (V), or a salt or solvate thereof, in which R3, R4 and R5 are independently hydrogen, or optionally substituted alkyl or alkoxy, or an optionally substituted carbocyclic, carbocyclicoxy, heterocyclic, or heterocyclicoxy ring, with the proviso that one and only one of R3, R4 and R5 is hydrogen, or two of R3, R4 and R5 are linked together to form a cycloalkyl group, R1 is hydrogen or carboxamido, C 1-10 alkyl, C 2-10 alkenyl, C 1-3 alkyl-aryl, C 1-3 alkyl-heterocyclyl, or C 3-10 cycloalkyl, any of which is optionally substituted by hydroxy, halogen, carboxamido, halo C 1-6 alkyl, C 1-6 alkyl, or C 1-6 alkoxy; R2 is amino; N* is amino when R1 is hydrogen or ═NH when R1 is carboxamido, C 1-10 alkyl, C 2-10 alkenyl, C 1-3 alkyl-aryl, C 1-3 alkyl-heterocyclyl, or C 3-10 cycloalkyl, any of which is optionally substituted by hydroxy, halogen, carboxamido, halo C 1-6 alkyl, C 1-6 alkyl, or C 1-6 alkoxy; or N* is a group NRaRb where Ra and Rb are independently H or an alkyl group; or N* is an optionally substituted piperazinyl ring.