1
|
Verma R, Bhatia R, Singh G, Kumar B, Mehan S, Monga V. Design, synthesis and neuropharmacological evaluation of new 2,4-disubstituted-1,5-benzodiazepines as CNS active agents. Bioorg Chem 2020; 101:104010. [PMID: 32615464 DOI: 10.1016/j.bioorg.2020.104010] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 01/07/2023]
Abstract
Benzodiazepines (BZDs) represent a class of privilege scaffold in the modern era of medicinal chemistry as CNS active agents and BZD based drugs are used to treat different psychotic disorders. Inspired from the therapeutic potential of BZDs as promising CNS active agents, in the present work three different series of 1,5-benzodiazepines bearing various substitutions at position 2 and 4 of the benzodiazepine core were synthesized by condensing different substituted chalcones with o-phenylenediamine in the presence of piperidine as a base catalyst. Structural characterization of title compounds was done by using various analytical techniques such as IR, NMR, elemental analysis and mass spectral data. All the synthesized compounds (9a-d, 10a-e and 11a-c) were subjected to in vivo neuropharmacological studies to evaluate their CNS depressant and antiepileptic activity. Results of in vivo evaluation data showed that analogue 11b exhibited potent CNS depressant activity which was comparable to the standard drug diazepam. Compounds 10b and 10c displayed significant antiepileptic activity however they were less potent than the standard drug phenobarbitone. Molecular docking studies were performed using MOE software to find the interaction pattern and binding mode at the GABAA receptor (PDB Id: 6HUP). The results of the docking studies were in good agreement with the observed in vivo activity and revealed the satisfactory binding mode of the compounds within the binding site of the protein. The docking scores for the most promising candidates 10c, 11b and Diazepam were found to be -9.18, -9.46 and -9.88, respectively. Further, the compounds showed compliance with the Lipinski's 'rule of five' and exhibited favourable drug-likeness scores. The identified leads can be explored further for the design and development of new BZD based psychotropic agents.
Collapse
Affiliation(s)
- Ramesh Verma
- Department of Pharmaceutical Chemistry, Rajendra Institute of Technology & Sciences, Sirsa 125055, Haryana, India
| | - Rohit Bhatia
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Ghal Kalan, GT Road, Moga 142001, Punjab, India
| | - Gurpreet Singh
- Department of Pharmaceutical Chemistry, Rajendra Institute of Technology & Sciences, Sirsa 125055, Haryana, India; Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Ghal Kalan, GT Road, Moga 142001, Punjab, India
| | - Bhupinder Kumar
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Ghal Kalan, GT Road, Moga 142001, Punjab, India
| | - Sidharth Mehan
- Department of Pharmacology, Rajendra Institute of Technology & Sciences, Sirsa 125055, Haryana, India; Department of Pharmacology, ISF College of Pharmacy, Ghal Kalan, GT Road, Moga 142001, Punjab, India
| | - Vikramdeep Monga
- Department of Pharmaceutical Chemistry, Rajendra Institute of Technology & Sciences, Sirsa 125055, Haryana, India; Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Ghal Kalan, GT Road, Moga 142001, Punjab, India.
| |
Collapse
|
2
|
Pavlovskii VI, Ushakov IY, Kabanova TA, Khalimova EI, Kravtsov VK, Andronati SA. Synthesis and Analgesic Activity of 3-Arylamino-1,2-Dihydro-3H-1,4-Benzodiazepin-2-Ones. Pharm Chem J 2015. [DOI: 10.1007/s11094-015-1335-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
3
|
Katritzky AR, Rachwal S. Synthesis of heterocycles mediated by benzotriazole. 2. Bicyclic systems. Chem Rev 2011; 111:7063-120. [PMID: 21894899 DOI: 10.1021/cr200031r] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alan R Katritzky
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, 32611-7200, United States.
| | | |
Collapse
|
4
|
Legerén L, Gómez E, Domínguez D. Enantiospecific synthesis of 5-phenylpyrrolo[2,1-c][1,4]benzodiazepines. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.09.168] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|