1
|
Venugopala KN, Khedr MA, Pillay M, Nayak SK, Chandrashekharappa S, Aldhubiab BE, Harsha S, Attimard M, Odhav B. Benzothiazole analogs as potential anti-TB agents: computational input and molecular dynamics. J Biomol Struct Dyn 2018; 37:1830-1842. [PMID: 29697293 DOI: 10.1080/07391102.2018.1470035] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Biotin is very important for the survival of Mycobacterium tuberculosis. 7,8-Diamino pelargonic acid aminotransaminase (DAPA) is a transaminase enzyme involved in the biosynthesis of biotin. The benzothiazole title compounds were investigated for their in vitro anti-tubercular activity against two tubercular strains: H37Rv (ATCC 25,177) and MDR-MTB (multidrug-resistant M. tuberculosis, resistant to isoniazid, rifampicin, and ethambutol) by an agar incorporation method. The possible binding mode and predicted affinity were computed using a molecular docking study. Among the synthesized compounds in the series, the title compound {2-(benzo[d]thiazol-2-yl-methoxy)-5-fluorophenyl}-(4-chlorophenyl)-methanone was found to exhibit significant activity with minimum inhibitory concentrations of 1 μg/mL and 2 μg/mL against H37Rv and MDR-MTB, respectively; this compound showed the highest binding affinity (-24.75 kcal/mol) as well.
Collapse
Affiliation(s)
- Katharigatta N Venugopala
- a Department of Pharmaceutical Sciences, College of Clinical Pharmacy , King Faisal University , Al-Ahsa , 31982 , Kingdom of Saudi Arabia.,b Department of Biotechnology and Food Technology , Durban University of Technology , Durban , 4001 , South Africa
| | - Mohammed A Khedr
- a Department of Pharmaceutical Sciences, College of Clinical Pharmacy , King Faisal University , Al-Ahsa , 31982 , Kingdom of Saudi Arabia.,c Faculty of Pharmacy, Department of Pharmaceutical Chemistry , Helwan University , Ein Helwan, Cairo , 11795 , Egypt
| | - Melendhran Pillay
- d Department of Microbiology , National Health Laboratory Services, KZN Academic Complex, Inkosi Albert Luthuli Central Hospital , Durban , 4001 , South Africa
| | - Susanta K Nayak
- e Department of Chemistry , Visvesvaraya National Institute of Technology , Nagpur , Maharashtra , 440010 , India
| | - Sandeep Chandrashekharappa
- f Institute for Stem Cell Biology and Regenerative Medicine , NCBS, TIFR, GKVK, Bellary Road, Bangalore , 560 065 , India
| | - Bandar E Aldhubiab
- a Department of Pharmaceutical Sciences, College of Clinical Pharmacy , King Faisal University , Al-Ahsa , 31982 , Kingdom of Saudi Arabia
| | - Sree Harsha
- a Department of Pharmaceutical Sciences, College of Clinical Pharmacy , King Faisal University , Al-Ahsa , 31982 , Kingdom of Saudi Arabia
| | - Mahesh Attimard
- a Department of Pharmaceutical Sciences, College of Clinical Pharmacy , King Faisal University , Al-Ahsa , 31982 , Kingdom of Saudi Arabia
| | - Bharti Odhav
- b Department of Biotechnology and Food Technology , Durban University of Technology , Durban , 4001 , South Africa
| |
Collapse
|
2
|
Venugopala KN, Nayak SK, Odhav B. {2-[(1,3-Benzo-thia-zol-2-yl)meth-oxy]-5-chloro-phen-yl}(4-chloro-phen-yl)methan-one. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1124. [PMID: 24046678 PMCID: PMC3770393 DOI: 10.1107/s1600536813016243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Accepted: 06/11/2013] [Indexed: 11/23/2022]
Abstract
In the title compound, C21H13Cl2NO2S, the benzothiazole ring makes dihedral angles of 0.94 (1) and 70.65 (5)° with the 4-chlorophenylmethanone unit and the 5-chlorophenyl ring, respectively. The dihedral angle between the 4-chlorophenylmethanone unit and the 5-chlorophenyl ring is 66.20 (5)°. The crystal structure consists of dimeric units generated by C—H⋯N hydrogen bonds, further linked by C—H⋯O and C—H⋯π interactions, leading to a three-dimensional network.
Collapse
Affiliation(s)
- K N Venugopala
- Department of Biotechnology and Food Technology, Durban University of Technology, Durban 4001, South Africa
| | | | | |
Collapse
|
3
|
Venugopala KN, Nayak SK, Govender T, Kruger HG, Maguire GEM. {2-[(1,3-Benzo-thia-zol-2-yl)meth-oxy]-5-fluoro-phen-yl}(4-chloro-phen-yl)methanone. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1007-8. [PMID: 24046594 PMCID: PMC3772451 DOI: 10.1107/s1600536813014621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 05/27/2013] [Indexed: 11/25/2022]
Abstract
The asymmetric unit of the title compound, C21H13ClFNO2S, contains two independent molecules with similar conformations. In the molecules, the thiazole ring is essentially planar [maximum atomic deviations = 0.014 (4) and 0.023 (5) Å] and is oriented with respect to the fluorophenyl ring and chlorophenyl rings at 9.96 (18) and 70.39 (18)° in one molecule and at 7.50 (18) and 68.43 (18)° in the other; the dihedral angles between the fluorophenyl and chlorophenyl rings are 64.9 (2) and 64.6 (2)°, respectively. Intermolecular C—H⋯O and C—H⋯F hydrogen bonds stabilize the three-dimensional supramolecular architecture. Weak C—H⋯π and π–π interactions [centroid–centroid distance = 3.877 (3) Å] lead to a criss-cross molecular packing along the c axis.
Collapse
Affiliation(s)
- K N Venugopala
- School of Pharmacy and Pharmacology, University of KwaZulu-Natal, Durban 4000, South Africa
| | | | | | | | | |
Collapse
|
4
|
Nayak SK, Venugopala KN, Govender T, Kruger HG, Maguire GEM. [2-(1,3-Benzothia-zol-2-ylmeth-oxy)-5-bromo-phen-yl](4-chloro-phen-yl)methanone. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o70. [PMID: 23476451 PMCID: PMC3588233 DOI: 10.1107/s1600536812049756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Accepted: 12/04/2012] [Indexed: 06/01/2023]
Abstract
In the title compound, C21H13BrClNO2S, the dihedral angle between the planes of the benzothia-zole and chloro-phenyl-methanone groups is 71.34 (6)°. In the crystal, weak C-H⋯N hydrogen bonds lead to dimer formation, whereas Br⋯Cl short contacts [3.4966 (11) Å] form infinite chains along the a-axis direction. Further, the C-H⋯O, C-H⋯π and π-π [centroid-centroid distance = 3.865 (2) Å] inter-actions stabilize the three-dimensional network.
Collapse
Affiliation(s)
- Susanta K. Nayak
- Center for Nano Science and Technology@Polimi, Istituto Italiano di Tecnologia, Via Pascoli 70/3-20133 Milan, Italy
| | - K. N. Venugopala
- School of Pharmacy and Pharmacology, University of Kwazulu-Natal, Durban 4000, South Africa
| | - Thavendran Govender
- School of Pharmacy and Pharmacology, University of Kwazulu-Natal, Durban 4000, South Africa
| | - Hendrik G. Kruger
- School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Glenn E. M. Maguire
- School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000, South Africa
| |
Collapse
|