capable of targeting the cancerous tissues with nominal side effects
[2]. Even though these advancements along with the design of
cancer chemotherapy have increased our understanding of cancer
inheritance, it still remains as a complex disease and seeking a cure
for cancer is quite challenging to the scientific community [3].
Chemotherapy [4] still remains as an effective treatment for solid
cancers. The chemotherapeutic drugs should selectively target
tumour cells without damaging the normal cells. Unfortunately, in
most of the cases, treatment by these drugs leads to harsh side
effects. Also, over a period of time, treatment of cancer cells with
certain drugs can result in an acquired resistance of these cells
towards multiple drugs. This phenomenon is known as multidrug
resistance (MDR) [3,4].
As a part of our research program on the synthesis and
cytotoxic evaluation of heterocyclic analogues [5,6], we were
interested in synthesizing some regio-isomeric analogues based
on imidazo[4,5-b]pyridine core and their cancer cell line