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Said MA, Riyadh SM, Al-Kaff NS, Nayl AA, Khalil KD, Bräse S, Gomha SM. Synthesis and greener pastures biological study of bis-thiadiazoles as potential Covid-19 drug candidates. ARAB J CHEM 2022; 15:104101. [PMID: 35845755 PMCID: PMC9272579 DOI: 10.1016/j.arabjc.2022.104101] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 07/02/2022] [Indexed: 12/12/2022] Open
Abstract
A novel series of bis- (Abdelhamid et al., 2017, Banerjee et al., 2018, Bharanidharan et al., 2022)thiadiazoles was synthesized from the reaction of precursor dimethyl 2,2'-(1,2-diphenylethane-1,2-diylidene)-bis(hydrazine-1-carbodithioate) and hydrazonyl chlorides in ethanol under ultrasonic irradiation. Spectral tools (IR. NMR, MS, elemental analyses, molecular dynamic simulation, DFT and LUMO and HOMO) were used to elucidate the structure of the isolated products. Molecular docking for the precursor, 3 and ligands 6a-i to two COVID-19 important proteins Mpro and RdRp was compared with two approved drugs, Remdesivir and Ivermectin. The binding affinity varied between the ligands and the drugs. The highest recorded binding affinity of 6c with Mpro was (-9.2 kcal/mol), followed by 6b and 6a, (-8.9 and -8.5 kcal/mol), respectively. The lowest recorded binding affinity was (-7.0 kcal/mol) for 6 g. In comparison, the approved drugs showed binding affinity (-7.4 and -7.7 kcal/mol), for Remdesivir and Ivermectin, respectively, which are within the range of the binding affinity of our ligands. The binding affinity of the approved drug Ivermectin against RdRp recoded the highest (-8.6 kcal/mol), followed by 6a, 6 h, and 6i are the same have (-8.2 kcal/mol). The lowest reading was found for compound 3 ligand (-6.3 kcal/mol). On the other side, the amino acids also differed between the compounds studied in this project for both the viral proteins. The ligand 6a forms three H-bonds with Thr 319(A), Sr 255(A) and Arg 457(A), whereas Ivermectin forms three H-bonds with His 41(A), Gly143(A) and Gln 18(A) for viral Mpro. The RdRp amino acids residues could be divided into four groups based on the amino acids that interact with hydrogen or hydrophobic interactions. The first group contained 6d, 6b, 6 g, and Remdesivir with 1-4 hydrogen bonds and hydrophobic interactions 1 to 10. Group 2 is 6a and 6f exhibited 1 and 3 hydrogen bonds and 15 and 14 hydrophobic interactions. Group 3 has 6e and Ivermectin shows 4 and 3 hydrogen bonds, respectively and 11 hydrophobic interactions for both compounds. The last group contains ligands 3, 6c, 6 h, and 6i gave 1-3 hydrogen bonds and 6c and 3 recorded the highest number of hydrophobic interactions, 14 for both 6c and 6 h. Pro Tox-II estimated compounds' activities as Hepatoxic, Carcinogenic and Mutagenic, revealing that 6f-h were inactive in all five similar to that found with Remdesivir and Ivermectin. The drug-likeness prediction was carried out by studying physicochemical properties, lipophilicity, size, polarity, insolubility, unsaturation, and flexibility. Generally, some properties of the ligands were comparable to that of the standards used in this study, Remdesivir and Ivermectin.
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Affiliation(s)
- Musa A Said
- Department of Chemistry, Faculty of Science, Taibah University, Al-Madinah Al-Munawarah 30002, Saudi Arabia
| | - Sayed M Riyadh
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Nadia S Al-Kaff
- Department of Biology, Faculty of Science, Taibah University, Al-Madinah Al-Munawarah 30002, Saudi Arabia
| | - A A Nayl
- Department of Chemistry, College of Science, Jouf University, P.O. Box 2014, Sakaka, Aljouf, Saudi Arabia
| | - Khaled D Khalil
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt.,Department of Chemistry, Faculty of Science, Taibah University, Al-Madinah Almunawrah, Yanbu 46423, Saudi Arabia
| | - Stefan Bräse
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76133 Karlsruhe, Germany.,Institute of Biological and Chemical Systems-Functional Molecular Systems (IBCS-FMS), Director Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Sobhi M Gomha
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt.,Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah 42351, Saudi Arabia
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Zeng L, Li J, Qiao C, Jiang Y, Wu J, Li H, Zhang J. Combination multi-nitrogen with high heat of formation: theoretical studies on the performance of bridged 1,2,4,5-tetrazine derivatives. J Mol Model 2021; 28:3. [PMID: 34874491 DOI: 10.1007/s00894-021-04999-4] [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: 09/01/2021] [Accepted: 11/29/2021] [Indexed: 11/27/2022]
Abstract
A series of bridged tetrazine derivatives (BDDT) were designed by using different bridges to connect two molecules of 1,2,4, 5-tetrazine oxides and then combining different substituents. At the same time, we used DFT-wB97/6-31 + G** method to regularly predict the HOMO-LUMO, heats of formation (HOF), detonation properties, thermal stability, and thermodynamic property orbitals of BDDT compounds. By studying the comprehensive relationship between different substituents and bridging and performance, it is shown that -N(NO2)2 and -C(NO2)3 are not only excellent groups to improve the heat of formation and detonation properties, but also can cause the compound to have a superior oxygen balance. And that the incorporation of the -N = N- and -NH-N = N- is helpful to enhance their thermal stabilities and HOF. -CH2-CH2- and -CH2-NH- are good for improving the HOMO-LUMO energy gaps. Performances with positive HOF (1170-1590 kJ mol-1), remarkable density (1.88-1.93 g cm-3), outstanding detonation properties (D = 9.15-9.80 km s-1, P = 38.24-44.40 GPa), and acceptable impact sensitivity lead C5, D8, E5, E7, F5, and F7 to be the potential candidates of HEDMs.
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Affiliation(s)
- Lian Zeng
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China
| | - Junyan Li
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China
| | - Chen Qiao
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China
| | - Yuhe Jiang
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China
| | - Jinting Wu
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China. .,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, People's Republic of China.
| | - Hongbo Li
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China.
| | - Jianguo Zhang
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
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Duan B, Liu N, Lu X, Mo H, Zhang Q, Liu Y, Wang B. Screening for energetic compounds based on 1,3-dinitrohexahydropyrimidine skeleton and 5-various explosopheres: molecular design and computational study. Sci Rep 2020; 10:18292. [PMID: 33106564 PMCID: PMC7589465 DOI: 10.1038/s41598-020-75281-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 10/09/2020] [Indexed: 12/11/2022] Open
Abstract
In this paper, twelve 1,3-dinitrohexahydropyrimidine-based energetic compounds were designed by introducing various explosopheres into hexahydropyrimidine skeleton. Their geometric and electronic structures, heats of formation (HOFs), energetic performance, thermal stability and impact sensitivity were discussed. It is found that the incorporation of electron-withdrawing groups (-NO2, -NHNO2, -N3, -CH(NO2)2, -CF(NO2)2, -C(NO2)3) improves HOFs of the derivatives and all the substituents contribute to enhancing the densities and detonation properties (D, P) of the title compounds. Therein, the substitution of -C(NO2)3 features the best energetic performance with detonation velocity of 9.40 km s-1 and detonation pressure of 40.20 GPa. An analysis of the bond dissociation energies suggests that N-NO2 bond may be the initial site in the thermal decompositions for most of the derivatives. Besides, -ONO2 and -NF2 derivatives stand out with lower impact sensitivity. Characters with striking detonation properties (D = 8.62 km s-1, P = 35.08 GPa; D = 8.81 km s-1, P = 34.88 GPa), good thermal stability, and acceptable impact sensitivity (characteristic height H50 over 34 cm) lead novel compounds 5,5-difluoramine-1,3-dinitrohexahydropyrimidine (K) and 5-fluoro-1,3,5-trinitrohexahydropyrimidine (L) to be very promising energetic materials. This work provides the theoretical molecular design and a reasonable synthetic route of L for further experimental synthesis and testing.
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Affiliation(s)
- Binghui Duan
- Xi'an Modern Chemistry Research Institute, Xi'an, 710065, People's Republic of China
| | - Ning Liu
- Xi'an Modern Chemistry Research Institute, Xi'an, 710065, People's Republic of China.
- State Key Laboratory of Fluorine and Nitrogen Chemicals, Xi'an, 710065, People's Republic of China.
| | - Xianming Lu
- Xi'an Modern Chemistry Research Institute, Xi'an, 710065, People's Republic of China
- State Key Laboratory of Fluorine and Nitrogen Chemicals, Xi'an, 710065, People's Republic of China
| | - Hongchang Mo
- Xi'an Modern Chemistry Research Institute, Xi'an, 710065, People's Republic of China
| | - Qian Zhang
- Xi'an Modern Chemistry Research Institute, Xi'an, 710065, People's Republic of China
| | - Yingzhe Liu
- Xi'an Modern Chemistry Research Institute, Xi'an, 710065, People's Republic of China
- State Key Laboratory of Fluorine and Nitrogen Chemicals, Xi'an, 710065, People's Republic of China
| | - Bozhou Wang
- Xi'an Modern Chemistry Research Institute, Xi'an, 710065, People's Republic of China.
- State Key Laboratory of Fluorine and Nitrogen Chemicals, Xi'an, 710065, People's Republic of China.
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