6-phenyl-2-[((piperidin-4-ylmethyl)-piperazin-1YL) or piperazin 1-ylmethyl)-piperidin-1-yl)]-imidazo[2,1-B][1,3,4]thiadiazole derivatives and their use

Heterocyclic compounds of formula (I), (II), (III) or a pharmaceutically acceptable salt thereof: Figure US08653082-20140218-C00001 wherein R1, R2 and R3 are each independently selected from hydrogen, halogen, C1-6alkyl, C2-6alkenyl, N—(C1-6alkyl)2, and N—(C2-6alkenyl)2, the C1-6alkyl and C2-6alkenyl being straight or branched; and Y1 and Y2 are selected from N and CH where one of Y1 and Y2 is N and the other is CH, are provided. Also provided are the synthesis of and pharmaceutical compositions including these compounds. These compounds and pharmaceutical compositions thereof can be used for the treatment of disorders, and in particular, cancer.