Publications by authors named "Narayanasamy Nivetha"

Breast and colorectal cancers are the most common tumors, with high recurrence and low survival rates. We designed and synthesized a series of spirooxindole pyrrolidinyl derivatives, which were further evaluated for anti-proliferative activity using MDA-MB-468 and HCT 15 cell lines. The best inhibitor of this class, compound 6f, showed a very good inhibition potency, both on the MDA-MB-468 and HCT 15 cells as confirmed by molecular docking and molecular dynamic studies that predicted its binding mode into the active site of the targets.

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β-Galactosidase serves as a pivotal biomarker for both cancer and cellular aging. The advancement of fluorescent sensors for tracking β-galactosidase activity is imperative in the realm of cancer diagnosis. We have designed a near-infrared fluorescent probe (PTA-gal) for the detection of β-galactosidase in living systems with large Stokes shifts.

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A highly stereoselective, three-component method has been developed to synthesize pyrrolidine and pyrrolizidine containing spirooxindole derivatives. The interaction between the dipolarophile α,β-unsaturated carbonyl compounds and the dipole azomethine ylide formed by the reaction of 1,2-dicarbonyl compounds and secondary amino acids is referred to as the 1,3-dipolar cycloaddition reaction. The reaction conditions were optimized to achieve excellent stereo- and regioselectivity.

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