The title compound 4-(5-nitro-thiophen-2-yl)-pyrrolo[1,2-a] quinoxaline (5NOTAAPP) was obtained by a straightforward catalyst-free reaction of 5-nitro-2- thiophene carboxaldehyde and 1-(2-aminophenyl) pyrrole in methanol and was structurally characterized by FT IR, UV-Vis, NMR spectroscopic techniques and elemental analysis. The structure of the compound has been confirmed by the single-crystal X-ray diffraction technique. The compound crystallizes in a monoclinic crystal system with space group P2/c. Unit cell dimensions: = 12.2009(17) A, = 8.3544(9) A, = 13.9179(17) A and = 104.980(5) A. Hirshfeld surface analysis was carried out to understand the different intermolecular interactions. The two-dimensional fingerprint plot revealed the most prominent interactions in the compound. Theoretical calculations were executed using Density functional theory (DFT) by Gaussian09 software to develop optimized geometry and frontier molecular orbital analysis. Molecular docking studies revealed that the title compound is a potent inhibitor of Main protease 3CL with PDB ID: 6LU7, the viral protease which is responsible for the new Corona Virus Disease (COVID-19).
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http://dx.doi.org/10.1016/j.molstruc.2021.131932 | DOI Listing |
Chem Asian J
December 2024
IIT Bhilai: Indian Institute of Technology Bhilai, Chemistry, INDIA.
Investigating solid-state photoreactivity, driven by crystal packing, has been a major enduring research theme in Crystal Engineering. Trans-3-styryl pyridine (3-StPy), an unsymmetric olefin, is photo-stable. However, when converted to a series of salts, they exhibited solid-state photoreactivity under UV irradiation.
View Article and Find Full Text PDFRSC Adv
December 2024
Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100050 P.R. China
This study presents the synthesis and characterization of novel cocrystal structures of theophylline (THE) with the amino acids gamma-aminobutyric acid (GABA) and l-arginine (ARG). Despite a large number of reports about THE cocrystals, no crystallographic parameters of cocrystals formed by THE and amino acids have been reported. THE is characterized by low solubility, while amino acids as cocrystal co-formers (CCFs) are increasingly recognized for their high solubility and safety.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
October 2024
The mol-ecule of the title compound, [Ni(CHO)(CHN)(HO)]·CHOH, has triclinic () symmetry. This compound is of inter-est for its anti-microbial properties. The asymmetric unit comprises two independent complex mol-ecules, which are linked by N-H⋯O and O-H⋯O hydrogen bonds along [111].
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
October 2024
Rigaku Americas Corporation, The Woodlands Texas 77381 USA.
The crystal structure of the title compound, [Ni(CHN)(NO)]NO, at room temperature, has monoclinic (2/) symmetry. The structure displays inter-molecular hydrogen bonding. The nickel displays a distorted bipyramidal geometry with the symmetric bidentate bonded nitrate occupying an equatorial site.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
October 2024
Laboratory of Materials Chemistry (LR13ES08), Faculty of Sciences of Bizerte, University of Carthage, 7021 Zarzouna, Bizerte, Tunisia.
In the title salt, CHN ·HPO , the complete dication is generated by a crystallographic centre of symmetry with the methyl groups in equatorial orientations. The complete dianion is generated by a crystallographic twofold axis with the central O atom lying on the axis: the P-O-P bond angle is 135.50 (12)°.
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