The utilities of pyrazolines encouraged synthesis of a new pyrazoline derivative via ring closure of chalcone, for optimistic neurodegenerative applications
Keywords:2-Pyrazoline ligands, chalcones, clinical applications, spectroscopic studies
Pyrazolines and their derivatives have been extensively studied as coordinated ligands of high potential applications in diverse chemical and biological systems. This work explores some methods of synthesis of pyrazolines, such as the preparation of pyrazole derivatives via chalcones. It also demonstrates that 2-pyrazoline complexes were biologically active and have had a range of clinical applications. Palladium (II) complex of pyrazole was active as antitumor when tested against murine mammary adenocarcinoma (LM3). Copper (II) and Cobalt (II) complex are biologically active in the living system as biomolecules or co factors. Based on these information, we tried here to synthesis a new 2-pyrazoline from (E)-3-(4-bromophenyl)-1-(pyridin-2-yl)prop-2-en-1-one. The newly synthesized pyrazoline was characterized using mass spectroscopy, nucleic magnetic resonance spectroscopy NMR and Fourier transform infrared spectroscopy FTIR. The characterization results showed that 2-pyrazoline has successfully synthesized. The microanalyses (C.H.N.S), GC-MS, H and 13C NMR and FT-IR spectra confirmed the formation of 2-pyrazoline ring with substitution at N1,C-3 and C-5 and the spin-spin coupling constants (J) for the multiple peaks at H NMR spectra pointed to the de shielded aromatic protons in α and β protons of the prepared chalcone. Interestingly, some new family of pyrazoles that have isosteres of Zonisamide have previously showed activity toward treating neuroglial disorders such as epilepsy and autism. Thus, our synthesized pyrazole could have the potency to moderate some neurodegenerative disorders. It could negatively interact with some neurotransmitters through hydrogen bonding and electrostatic interactions with the amino and carboxylic ends of the functional ends of the neurotransmitters. This promising trend by the promising candidate 2- pyrazoline should have further investigations.
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