The invention relates to compounds of Formula I ##STR00001## and their therapeutic uses, wherein substituent A is chosen from a substituted or unsubstituted aryl, heteroaryl, heterocyclic, or carboxylic group, B is chosen from a substituted or unsubstituted piperidine, homopiperidine, piperazine, pyrrolidine or azetidine group, R1 is chosen from hydro, alkyl, aryl, heteroaryl amino and halo, and L1 and L2 are as defined in the specification.