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A linear strategy was adopted in synthesizing the novel amine derivatives 7(a-h) of 5-[5- (chloromethyl)-1, 3, 4-oxadiazol-2-yl]-2-(4-fluorophenyl)-pyridine (6) and screened these compounds for in vitro anticancer activity against three human cancer cell lines ( HeLa , Caco-2 and HepG2 ). The synthesised novel compounds were characterized by 1H NMR, MS and 13C NMR spectroscopic evidences. Microwave irradiation of compound ( 5 ) in presence of chloroacetyl chloride and phosphoryl oxychloride yielded the dehydrated cyclized key intermediate 5-[5-(chloromethyl)-1,3,4-oxadiazol-2-yl]-2-(4-fluorophenyl)-pyridine which upon treatment with various primary or secondary amines ( a-h ) resulted into the corresponding amine derivatives. The IC50 values of the final compounds were compared with that of 5-fluorouracil (5-FU) taken as the standard. Compounds 7a and 7d were found to be highly cytotoxic against HepG2 cell lines with IC50 values of 2.6 ?M (IC50 = 34.0 ± 0.5 ?M) and 5.8 ?M (IC50 = 112 ± 1.4 ?M) respectively. The compound (7f) alone was found to have high cytotoxicity against Caco-2 cell lines with IC50 value of 2.3 ?M (IC50 = 87 ± 2.6 ?M). Dhaka Univ. J. Pharm. Sci. 16(1): 11-19, 2017 (June)

the dhaka university journal of pharmaceutical sciences

Design, Synthesis and Characterization of Novel Amine Derivatives of 5-[5-(Chloromethyl)-1, 3, 4-Oxadiazol-2-yl]- 2-(4-Fluorophenyl)-Pyridine as a New Class of Anticancer Agents