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Mohan B, Estalayo-Adrián S, Umadevi D, la Cour Poulsen B, Blasco S, McManus GJ, Gunnlaugsson T, Shanmugaraju S. Design, Synthesis, and Anticancer Studies of a p-Cymene-Ru(II)-Curcumin Organometallic Conjugate Based on a Fluorescent 4-Amino-1,8-naphthalimide Tröger's Base Scaffold. Inorg Chem 2022; 61:11592-11599. [PMID: 35857283 DOI: 10.1021/acs.inorgchem.2c01005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A unique V-shaped "chiral" supramolecular scaffold, N-(4-pyridyl)-4-amino-1,8-naphthalimide Tröger's base (TBNap), was synthesized in good yield from a precursor N-(4-pyridyl)-4-amino-1,8-naphthalimide (Nap). TBNap was characterized using different spectroscopic methods and the molecular structure was elucidated by diffraction analysis. A new p-cymene-Ru(II)-curcumin conjugate (TB-Ru-Cur) was designed by reacting TBNap dipyridyl donor and ruthenium-curcuminato acceptor [RuCur = (p-cymene)Ru-(curcuminato)Cl] in the presence of silver triflate. TB-Ru-Cur was isolated in quantitative yield and characterized using Fourier transform infrared (FT-IR), NMR (1H, 13C, and 19F), and electrospray ionization mass spectrometry (ESI-MS), and the molecular structure has been predicted using a computational study. Both TBNap and TB-Ru-Cur exhibited intramolecular charge transfer (ICT)-based fluorescence emission. Furthermore, the anticancer properties of TBNap, Ru-Cur, and TB-Ru-Cur were assessed in different cancer cell lines. Gratifyingly, the conjugate TB-Ru-Cur displayed fast-cellular internalization and good cytotoxicity against HeLa, HCT-116, and HepG2 cancer cells and the estimated IC50 value was much lower than that of the precursors (TBNap and Ru-Cur) and the well-known chemotherapeutic drug cisplatin.
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Affiliation(s)
- Binduja Mohan
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678557, Kerala, India
| | - Sandra Estalayo-Adrián
- School of Chemistry and Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, Dublin 2 D02 PN40, Ireland
| | - Deivasigamani Umadevi
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678557, Kerala, India
| | - Bjørn la Cour Poulsen
- School of Chemistry and Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, Dublin 2 D02 PN40, Ireland
| | - Salvador Blasco
- Instituto de Ciencia Molecular, Universidad de Valencia, C/Catedrático José Beltrán Martínez 2, 46980 Paterna, Spain
| | - Gavin J McManus
- School of Biochemistry and Immunology and Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, Dublin 2 D02 PN40, Ireland
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, Dublin 2 D02 PN40, Ireland
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CuO/CaO mediated synthesis of amino-1,8-naphthalimides from the nitro analogues. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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