Synthesis of Cobalt(III) Complexes Derived from Pyridoxal: Structural Cleavage Evaluations and In Silico Calculations for Biological Targets

Bibliographic Details
Title: Synthesis of Cobalt(III) Complexes Derived from Pyridoxal: Structural Cleavage Evaluations and In Silico Calculations for Biological Targets
Authors: Liniquer André Fontana, Francisco Mainardi Martins, Josiéli Demetrio Siqueira, Carlos Serpa, Otávio Augusto Chaves, Davi Fernando Back
Source: Inorganics, Vol 12, Iss 6, p 171 (2024)
Publisher Information: MDPI AG, 2024.
Publication Year: 2024
Collection: LCC:Inorganic chemistry
Subject Terms: pyridoxal, cleavage, CoIII complexes, C-S(thioether), in silico calculations, anticancer, Inorganic chemistry, QD146-197
More Details: This study sought to investigate the synthesis of eight complexes constituted by a cobalt(III) (CoIII) metallic center coordinated to two units of iminic ligands LnC (n = 1–4, L1C–L4C), which are derivatives of pyridoxal hydrochloride and anilines with thioether function containing one to four carbons. Depending on the source of the cobalt ion and the addition (or not) of a non-coordinating counterion, complexes with distinct structures may form, being categorized into two series: [CoIII(LnC)(L0C)] (n = 1–4, C1’–C4’) with a LnC ligand and a ligand that has a thiolate function which cleaves the C-S(thioether) bond (L0C) and [CoIII(LnC)2]PF6 (n = 1–4, C1–C4) with two similar units of the same LnC ligand. The occurrence (or not) of cleavage in the eight complexes was observed by elucidating the solid-state structures by single crystal X-ray diffraction. This exciting method allows the synthesis of CoIII complexes without cleaving the C-S bonds from the ligands, thereby not requiring an inert atmosphere in the reaction systems. The synthesized complexes were evaluated by in silico calculations on viable biological targets such as deoxyribonucleic acid, superoxide dismutase enzyme, human serum albumin, and the structural spike glycoprotein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) with the receptor binding domain (RBD) in both up and down conformations without and in complex with the cellular receptor angiotensin-converting enzyme 2 (ACE2). Overall, in silico results suggested that all the inorganic complexes under study are potential anticancer/antiviral agents; however, C4 and C4’ are the best candidates for future in vitro assays.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2304-6740
Relation: https://www.mdpi.com/2304-6740/12/6/171; https://doaj.org/toc/2304-6740
DOI: 10.3390/inorganics12060171
Access URL: https://doaj.org/article/c5e7fba05a8547a7820947ee21a3a6d7
Accession Number: edsdoj.5e7fba05a8547a7820947ee21a3a6d7
Database: Directory of Open Access Journals
More Details
ISSN:23046740
DOI:10.3390/inorganics12060171
Published in:Inorganics
Language:English