Patent ID: 7001918

Claim:
A compound of formula (I): wherein: A represents an aromatic, 5-membered heterocycle optionally substituted by one or more groups “R” selected from halogen, —NRaRb, C 1-6 alkyl, C 2-6 alkenyl, C 3-6 alkynyl, aryl, heteroaryl, hydroxy, —OC 1-6 alkyl, formyl, cyano, trifluoromethyl, —CHNOR, —CO 2 Ra, —CONRaRb, —NRaC(O)Ra, —NRaC(O)ORa, —OC(O)NRaRb, —OC(O)Ra, —OC(O)ORa, or a C 1-6 alkyl group substituted by one or more groups selected from hydroxy, —NRaRb, —OC 1-6 alkyl, —SRa, —CHNOR, —CO 2 Ra, —CONRaRb, —NRaC(O)Ra, —NRaC(O)ORa, —OC(O)NRaRb, —OC(O)Ra, —OC(O)ORa Ra and Rb independently represent hydrogen or C 1-6 alkyl; R 1 represents hydrogen, C 1-6 alkyl or together R 1 and R 3 represent a CH 2 moiety; R 2 represents hydrogen, —OC 1-6 alkyl, —O(O)C 1-6 alkyl or hydroxy; R 3 represents hydrogen, hydroxy or together R 3 and R 1 represent a CH 2 moiety, or a pharmaceutically acceptable salt or solvate thereof.