1
|
Bairagi KM, Ingle KS, Bhowal R, Mohurle SA, Hasija A, Alwassil OI, Venugopala KN, Chopra D, Nayak SK. Interplay of Halogen and Hydrogen Bonding through Co-Crystallization in Pharmacologically Active Dihydropyrimidines: Insights from Crystal Structure and Energy Framework. Chempluschem 2021; 86:1167-1176. [PMID: 34409757 DOI: 10.1002/cplu.202100259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 07/31/2021] [Indexed: 11/05/2022]
Abstract
A solvent-assisted grinding method has been used to prepare co-crystals in substituted dihydropyrimidines (DHPM) that constitutes pharmacologically active compounds. These were characterized using FT-IR, PXRD, and single-crystal X-ray diffraction. In order to explore the possibility of formation of halogen (XB) and hydrogen bonding (HB) synthons in the solid state, co-crystallization attempts of differently substituted DHPM molecules, containing nitro, hydoxy, and chloro substituents, with different co-formers, such as 1,4-diiodo tetrafluorobenzene (1,4 DITFB) and 3-nitrobenzoic acid (3 NBA) were performed. The XB co-crystals (C2aXB, C2bXB, and C2cXB) prefer the formation of C-I⋅⋅⋅O/C-I⋅⋅⋅S XB synthon, whereas the HB co-crystal (C2dHB) is stabilized by N-H⋅⋅⋅O H-bond formation. Hirshfeld surface analysis revealed that the percentage contribution of intermolecular interactions for XB co-crystals prefer equal contribution of XB synthon along with HB synthon. Furthermore, the interaction energy was analyzed using energy frameworks, which suggests that their stability, a combination of electrostatics and dispersion, is enhanced through XB/HB in comparison to the parent DHPMs.
Collapse
Affiliation(s)
- Keshab M Bairagi
- Department of Chemistry, Institution Visvesvaraya National Institute of Technology, Nagpur Address Nagpur, 440010, Maharashtra, India
| | - Kapil S Ingle
- Department of Chemistry, Institution Visvesvaraya National Institute of Technology, Nagpur Address Nagpur, 440010, Maharashtra, India
| | - Rohit Bhowal
- Department of Chemistry, Institution Indian Institute of Science Education and Research Bhopal Address Bhopal, Bhauri, Bhopal 462023, India
| | - Smital A Mohurle
- Department of Chemistry, Institution Visvesvaraya National Institute of Technology, Nagpur Address Nagpur, 440010, Maharashtra, India
| | - Avantika Hasija
- Department of Chemistry, Institution Indian Institute of Science Education and Research Bhopal Address Bhopal, Bhauri, Bhopal 462023, India
| | - Osama I Alwassil
- Department of Pharmaceutical Sciences, King Saud bin Abdulaziz University for health sciences, Riyadh, 11481, Kingdom of Saudi Arabia
| | - Katharigatta N Venugopala
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, 31982, Kingdom of Saudi Arabia.,Department of Biotechnology and Food Technology, Durban University of Technology, Durban, Durban, 4001, South Africa.,Department of Pharmaceutical Sciences College of Clinical Pharmacy King Faisal University, Al-Ahsa, 31982, Kingdom of Saudi Arabia.,Department of Biotechnology and Food Technology, Durban University of Technology, Durban, Durban, 4001, South Africa
| | - Deepak Chopra
- Department of Chemistry, Institution Indian Institute of Science Education and Research Bhopal Address Bhopal, Bhauri, Bhopal 462023, India
| | - Susanta K Nayak
- Department of Chemistry, Institution Visvesvaraya National Institute of Technology, Nagpur Address Nagpur, 440010, Maharashtra, India
| |
Collapse
|
3
|
Bairagi KM, Venugopala KN, Mondal PK, Gleiser RM, Chopra D, García D, Odhav B, Nayak SK. Larvicidal study of tetrahydropyrimidine scaffolds against Anopheles arabiensis and structural insight by single crystal X-ray studies. Chem Biol Drug Des 2018; 92:1924-1932. [PMID: 29923688 DOI: 10.1111/cbdd.13351] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 05/16/2018] [Accepted: 05/19/2018] [Indexed: 11/29/2022]
Abstract
A series of methyl or ethyl 4-(substitutedphenyl/pyridyl)-6-methyl-2-oxo/thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (HPM) analogues 4a-g were synthesized and evaluated for larvicidal activity against Anopheles arabiensis. These newly synthesized compounds were characterized by spectral studies such as FT-IR, NMR (1 H and 13 C), LC-MS, and elemental analysis. The conformational features and supramolecular assembly of molecules 4a, 4b, and 4e were further analyzed from single crystal X-ray study. The larvicidal activity of these tetrahydropyrimidine pharmacophore series was analyzed based on their relative substituents. Among the synthesized HPM analogous from the series, compounds 4d and 4e both having electron withdrawing chlorine group on phenyl ring at the fourth position of the tetrahydropyrimidine pharmacophore exhibited the most promising larvicidal activity.
Collapse
Affiliation(s)
- Keshab M Bairagi
- Department of Chemistry, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, India
| | - Katharigatta N Venugopala
- Department of Biotechnology and Food Technology, Durban University of Technology, Durban, South Africa
| | - Pradip Kumar Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh, India
| | - Raquel M Gleiser
- CREAN-IMBIV (CONICET-UNC), Córdoba, Argentina.,FCEFyN, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Deepak Chopra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh, India
| | - Daniel García
- Facultad de Ciencias Exactas, Físicas y Naturales, Instituto de Investigaciones Biológicas y Tecnológicas (IIByT-CONICET), Cátedra de Química Biológica, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Bharti Odhav
- Department of Biotechnology and Food Technology, Durban University of Technology, Durban, South Africa
| | - Susanta K Nayak
- Department of Chemistry, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, India
| |
Collapse
|