Series of novel 6-fluoro-3-(4-piperidinyl)-1,2-benzisoxazole L-amino acid derivatives 5(a-f) were synthesized by varying substitution at N-position of the 6-fluoro-3-(4-piperidinyl)-1,2-benzisoxazole. All the compounds 5(a-f) were characterized by 1H-NMR, IR and LC/MS spectroscopy. The compounds were tested for anti-DNA damaging property by using biophysical techniques such as agarose gel, thermal melting temperature (Tm) and ethidium bromide binding to DNA by using fluorescence spectrophotometer. The results revealed that 5c, 5b and 5d showed high activity. These observations can be related to the presence of the lysine, tryptophan and proline amino acid residues with basic amine, aromatic and heterocyclic groups respectively.
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