Synthesis and Docking Study of Novel 4-Thiazolidinone Derivatives as Anti-Gram-positive and Anti-H. pylori Agents. 2019

Armin Khomami, and Mohammadamin Rahimi, and Arash Tabei, and Parastoo Saniee, and Arash Mahboubi, and Alireza Foroumadi, and Nasrin Nassiri Koopaei, and Ali Almasirad
Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.

BACKGROUND Bacterial resistance to the available antibiotics is a life threatening issue and researchers are trying to find new drugs to overcome this problem. Amongst the different structural classes, thiazolidinone-4-one, as a new effective pharmacophore against various bacteria, has been introduced. OBJECTIVE A new series of 2-(5-(5-nitrothiophene-2-yl)-1,3,4-thiadiazole-2-ylimino)-5-arylidenethiazolidin- 4-one derivatives were designed and synthesized as new antibacterial agents. METHODS Target compounds were synthesized during 5 steps and their in vitro antibacterial and anti-H. pylori activities were evaluated. The interaction of the most active derivatives with the probable targets was assessed by Auto Dock 4.2 Program. RESULTS The results showed that the most potent compounds, 18, 22 and 23, displayed antibacterial activity versus S.aureus, S.epidermidis, B.cereus and B.subtilis (MIC, 1.56-12.5 µg/mL) and none of the derivatives were active on tested Gram-negative bacteria. Compound 12 in all considered doses and compounds 10, and 27 had strong anti-H. pylori activity (inhibition zone >20 mm) in 25 μg disc. Docking studies determined suitable interactions and affinity of potent compounds with bacterial MUR B and H. pylori urease enzymes. CONCLUSIONS According to the results most of the derivatives are effective anti-bacterial agents and docking evaluation confirmed their possible mechanisms of actions as MURB and Urease inhibitors.

UI MeSH Term Description Entries
D011487 Protein Conformation The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain). Conformation, Protein,Conformations, Protein,Protein Conformations
D006094 Gram-Positive Bacteria Bacteria which retain the crystal violet stain when treated by Gram's method. Gram Positive Bacteria
D000900 Anti-Bacterial Agents Substances that inhibit the growth or reproduction of BACTERIA. Anti-Bacterial Agent,Anti-Bacterial Compound,Anti-Mycobacterial Agent,Antibacterial Agent,Antibiotics,Antimycobacterial Agent,Bacteriocidal Agent,Bacteriocide,Anti-Bacterial Compounds,Anti-Mycobacterial Agents,Antibacterial Agents,Antibiotic,Antimycobacterial Agents,Bacteriocidal Agents,Bacteriocides,Agent, Anti-Bacterial,Agent, Anti-Mycobacterial,Agent, Antibacterial,Agent, Antimycobacterial,Agent, Bacteriocidal,Agents, Anti-Bacterial,Agents, Anti-Mycobacterial,Agents, Antibacterial,Agents, Antimycobacterial,Agents, Bacteriocidal,Anti Bacterial Agent,Anti Bacterial Agents,Anti Bacterial Compound,Anti Bacterial Compounds,Anti Mycobacterial Agent,Anti Mycobacterial Agents,Compound, Anti-Bacterial,Compounds, Anti-Bacterial
D013329 Structure-Activity Relationship The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups. Relationship, Structure-Activity,Relationships, Structure-Activity,Structure Activity Relationship,Structure-Activity Relationships
D014510 Urease An enzyme that catalyzes the conversion of urea and water to carbon dioxide and ammonia. EC 3.5.1.5. Phytourease,Urea Amidohydrolase,Amidohydrolase, Urea
D016480 Helicobacter pylori A spiral bacterium active as a human gastric pathogen. It is a gram-negative, urease-positive, curved or slightly spiral organism initially isolated in 1982 from patients with lesions of gastritis or peptic ulcers in Western Australia. Helicobacter pylori was originally classified in the genus CAMPYLOBACTER, but RNA sequencing, cellular fatty acid profiles, growth patterns, and other taxonomic characteristics indicate that the micro-organism should be included in the genus HELICOBACTER. It has been officially transferred to Helicobacter gen. nov. (see Int J Syst Bacteriol 1989 Oct;39(4):297-405). Campylobacter pylori,Campylobacter pylori subsp. pylori,Campylobacter pyloridis,Helicobacter nemestrinae
D053778 Thiazolidines Reduced (protonated) form of THIAZOLES. They can be oxidized to THIAZOLIDINEDIONES. Thiazolidine
D060326 Chemistry Techniques, Synthetic Methods used for the chemical synthesis of compounds. Included under this heading are laboratory methods used to synthesize a variety of chemicals and drugs. Inorganic Synthesis,Inorganic Synthesis Methods,Inorganic Synthesis Techniques,Methods of Inorganic Synthesis,Methods of Organic Synthesis,Methods of Peptide Synthesis,Organic Synthesis,Organic Synthesis Methods,Organic Synthesis Techniques,Peptide Synthesis Methods,Peptide Synthesis Techniques,Peptide Synthesis, Synthetic,Synthetic Chemistry Techniques,Synthetic Peptide Synthesis,Chemistry Technique, Synthetic,Inorganic Syntheses,Inorganic Synthesis Method,Inorganic Synthesis Technique,Method, Inorganic Synthesis,Method, Organic Synthesis,Method, Peptide Synthesis,Methods, Inorganic Synthesis,Methods, Organic Synthesis,Methods, Peptide Synthesis,Organic Syntheses,Organic Synthesis Technique,Peptide Syntheses, Synthetic,Peptide Synthesis Method,Peptide Synthesis Technique,Syntheses, Inorganic,Syntheses, Organic,Syntheses, Synthetic Peptide,Synthesis Method, Inorganic,Synthesis Method, Peptide,Synthesis Methods, Inorganic,Synthesis Methods, Peptide,Synthesis Technique, Inorganic,Synthesis Technique, Organic,Synthesis Technique, Peptide,Synthesis Techniques, Inorganic,Synthesis Techniques, Organic,Synthesis Techniques, Peptide,Synthesis, Inorganic,Synthesis, Organic,Synthesis, Synthetic Peptide,Synthetic Chemistry Technique,Synthetic Peptide Syntheses,Technique, Inorganic Synthesis,Technique, Organic Synthesis,Technique, Peptide Synthesis,Technique, Synthetic Chemistry,Techniques, Inorganic Synthesis,Techniques, Organic Synthesis,Techniques, Peptide Synthesis,Techniques, Synthetic Chemistry
D062105 Molecular Docking Simulation A computer simulation technique that is used to model the interaction between two molecules. Typically the docking simulation measures the interactions of a small molecule or ligand with a part of a larger molecule such as a protein. Molecular Docking,Molecular Docking Simulations,Molecular Docking Analysis,Analysis, Molecular Docking,Docking Analysis, Molecular,Docking Simulation, Molecular,Docking, Molecular,Molecular Docking Analyses,Molecular Dockings,Simulation, Molecular Docking

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