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Ji X, Wang N, Wang J, Huang Y, Wang T, Huang X, Hao H. Long-Acting Antibacterial Hydrogels Constructed by Interface-Induced Directional Assembly. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38988011 DOI: 10.1021/acsami.4c04397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
Self-assembled supermolecular hydrogels of therapeutic agents without structural modification are of great significance in biomedical applications. Nevertheless, the complex conformations and elusive interactions of therapeutic molecules limit the controlled assembly of hydrogels. Molecules at the interface might have different arrangements and assemblies compared to those in bulk aqueous solution, which could potentially alter the selectivity of supramolecular polymorphs. However, this effect is still not well understood. Here, we demonstrate the interface-induced self-assembly of fibers for hydrogels, which is distinct from the spherical aggregates in the bulk aqueous solution, using cephradine (CEP) as a model compound. This phenomenon is caused by the packing of anisotropic molecules at the interface, and it can be applied to control the supramolecular polymorphism for the direct self-assembly of hydrogels of therapeutic agents. The interface-induced hydrogel exhibits a high degree of adjustable release and a long-acting bactericidal effect.
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Affiliation(s)
- Xiongtao Ji
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Na Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Jingkang Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Yunhai Huang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Ting Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Xin Huang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Hongxun Hao
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
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2
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El Bakri Y, Karthikeyan S, Lai CH, Bakhite EA, Ahmad I, Abdel-Rahman AE, Abuelhassan S, Marae IS, Mohamed SK, Mague JT. New tetrahydroisoquinoline-4-carbonitrile derivatives as potent agents against cyclin-dependent kinases, crystal structures, and computational studies. J Biomol Struct Dyn 2024; 42:5053-5071. [PMID: 38764131 DOI: 10.1080/07391102.2023.2224899] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/07/2023] [Indexed: 05/21/2024]
Abstract
The synthesis of two new hexahydroisoquinoline-4-carbonitrile derivatives (3a and 3b) is reported along with spectroscopic data and their crystal structures. In compound 3a, the intramolecular O-H···O hydrogen bond constraints the acetyl and hydroxyl groups to be syn. In the crystal, inversion dimers are generated by C-H···O hydrogen bonds and are connected into layers parallel to (10-1) by additional C-H···O hydrogen bonds. The layers are stacked with Cl···S contacts 0.17 Å less than the sum of the respective van der Waals radii. The conformation of the compound 3b is partially determined by the intramolecular O-H···O hydrogen bond. A puckering analysis of the tetrahydroisoquinoline unit was performed. In the crystal, O-H···O and C-H···O hydrogen bonds together with C-H···π(ring) interactions form layers parallel to (01-1) which pack with normal van der Waals interactions. To understand the binding efficiency and stability of the title molecules, molecular docking, and 100 ns dynamic simulation analyses were performed with CDK5A1. To rationalize their structure-activity relationship(s), a DFT study at the B3LYP/6-311++G** theoretical level was also done. The 3D Hirshfled surfaces were also taken to investigate the crystal packings of both compounds. In addition, their ADMET properties were explored.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Youness El Bakri
- Department of Theoretical and Applied Chemistry, South Ural State University, Chelyabinsk, Russia
| | - Subramani Karthikeyan
- Division of Physics, school of advanced science, Vellore Institute of Technology, Chennai Campus, Chennai, Tamil Nadu, India
| | - Chin-Hung Lai
- Department of Medical Applied Chemistry, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Education, Chung Shan Medical University Hospital, Taichung, Taiwan
| | | | - Iqrar Ahmad
- Department of Pharmaceutical Chemistry, Prof. Ravindra Nikam College of Pharmacy, Gondur, Maharashtra, India
- Division of Computer Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Maharashtra, India
| | | | | | - Islam S Marae
- Department of Chemistry, Assiut University, Assiut, Egypt
| | - Shaaban K Mohamed
- Chemistry and Environmental Division, Manchester Metropolitan University, Manchester, England
- Chemistry Department, Minia University, El-Minia, Egypt
| | - Joel T Mague
- Department of Chemistry, Tulane University, New Orleans, Los Angeles, USA
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3
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Ji X, Wang J, Wang T, Wang N, Li X, Huang Y, Huang X, Hao H. Supramolecular Self-Assembly Process during Gelation and Crystallization of Cefradine. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Xiongtao Ji
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
| | - Jingkang Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
| | - Ting Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
| | - Na Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
| | - Xin Li
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
| | - Yunhai Huang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
| | - Xin Huang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
| | - Hongxun Hao
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
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4
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Kanagavalli A, Thilagavathi G, Jayachitra R, Elangovan N, Sowrirajan S, Shadakshara Murthy KR, Thomas R. Synthesis, Electronic Structure, UV–Vis, Wave Function, and Molecular Docking Studies of Schiff Base (Z)-N-(Thiazol-2-yl)-4-((Thiophene-2-ylmethylene)Amino)Benzenesulfonamide. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2150657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- A. Kanagavalli
- Department of Physics, Government Arts College, Bharathidasan University, Tiruchirappalli, India
| | - G. Thilagavathi
- Department of Physics, Nehru Memorial College, Bharathidasan University, Tiruchirappalli, India
| | - R. Jayachitra
- Department of Physics, Urumu Dhanalakshmi College, Bharathidasan University, Tiruchirappalli, India
| | - N. Elangovan
- Department of Chemistry, St Berchmans College (Autonomous), Mahatma Gandhi University, Changanassery, India
- Department of Mechanical Engineering, University Centre for Research and Development, Chandigarh University, Mohali, India
| | - S. Sowrirajan
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
| | | | - Renjith Thomas
- Department of Mechanical Engineering, University Centre for Research and Development, Chandigarh University, Mohali, India
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Sahaya Infant Lasalle B, Manikandan A, Senthil Pandian M, Ramasamy P. Theoretical and Experimental Investigation on 1,2,3‐Benzotriazole 4‐Hydroxybenzoic Acid (BTHBA) Single Crystals for Third‐Order Nonlinear Optical (NLO) Applications. CRYSTAL RESEARCH AND TECHNOLOGY 2022. [DOI: 10.1002/crat.202200155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- B. Sahaya Infant Lasalle
- Department of Physics SSN Research Centre Sri Sivasubramaniya Nadar College of Engineering Chennai Tamil Nadu 603110 India
| | - A. Manikandan
- Department of Physics SSN Research Centre Sri Sivasubramaniya Nadar College of Engineering Chennai Tamil Nadu 603110 India
| | - Muthu Senthil Pandian
- Department of Physics SSN Research Centre Sri Sivasubramaniya Nadar College of Engineering Chennai Tamil Nadu 603110 India
| | - P. Ramasamy
- Department of Physics SSN Research Centre Sri Sivasubramaniya Nadar College of Engineering Chennai Tamil Nadu 603110 India
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6
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Wang Q, Lian S, Guo C, Gao X, Dou Y, Song C, Lin J. The chemical adsorption effect of surface enhanced Raman spectroscopy of nitrobenzene and aniline using the density functional theory. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 279:121428. [PMID: 35660148 DOI: 10.1016/j.saa.2022.121428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 05/18/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
Nitrobenzene and Aniline are representatives of the nitro or amino compounds of benzene, mainly used in the manufacture of dyes, spices, medicines, and so on. Extensive use of Nitrobenzene and Aniline may cause pesticide residue pollution and have carcinogenic effects on organisms. In this paper, the Nitrobenzene and Aniline single molecules and their complexes with gold nanoparticles are studied theoretically by Raman spectroscopy, the surface-enhanced Raman spectroscopy (SERS) and the density functional theory (DFT) simulations. Selective binding of gold nanoparticles (AuNPs) to the analyte was used to study the molecular electrostatic potential (MEP), frontier molecular orbital (FMO) and the Raman activity spectra of Nitrobenzene and Aniline, as well as the Raman activity spectrum of the complexes. The most electronegative sites of Nitrobenzene and Aniline are found in the MEP and the hypothesis that these sites might be the adsorption sites of Nitrobenzene/Aniline molecules at the gold surface. At the same time, the MEP of the Nitrobenzene/Aniline complexes also prove the existence of the charge transfer effect between Nitrobenzene/Aniline and Au. The FMO energy gap of Nitrobenzene/Aniline is 0.18983 eV and 0.18953 eV, respectively, and which, after adding the Au3 clusters, change to 0.03376 eV and 0.0797 eV, respectively, indicating that the Nitrobenzene/Aniline-Au3 complexes have stronger chemical activities and are more prone to the charge transfer effects. The electrophilic indices of Nitrobenzene (0.17921 eV) and Aniline (0.05635 eV) are calculated and analyzed, as well as that of Nitrobenzene/Aniline-Au3 complexes after adding the Au3 atomic clusters, 0.80819 eV and 0.19819 eV, respectively. The obvious increasing trend in the electrophilic indices of the Nitrobenzene/Aniline-Au3 complexes indicate their stronger biological activities and more prone to chemical reactions. The chemisorption of Nitrobenzene/Aniline and gold nanoparticles complexes is studied by the SERS, and the Raman formation of the complexes at different binding sites of Nitrobenzene/Aniline and Nitrobenzene/Aniline-Au3 is well explained by the surface selection rule. The reason for the selective enhancement of the spectral peaks presented in the Raman activity spectrum is calculated, and the enhancement factor of the chemical enhancement due to the charge transfer effect is calculated as well. The reason for the peak offset in the SERS spectrum to the conventional Raman spectrum is explained.
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Affiliation(s)
- Qi Wang
- School of Science, Changchun University of Science and Technology, Jilin, China
| | - Shuai Lian
- School of Science, Changchun University of Science and Technology, Jilin, China
| | - Chang Guo
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Jilin, China
| | - Xun Gao
- School of Science, Changchun University of Science and Technology, Jilin, China; Jilin Provincial Key Laboratory of Ultrafast and Extreme Ultraviolet Optics, Changchun, China.
| | - Yinping Dou
- School of Science, Changchun University of Science and Technology, Jilin, China; Jilin Provincial Key Laboratory of Ultrafast and Extreme Ultraviolet Optics, Changchun, China
| | - Chao Song
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Jilin, China.
| | - Jingquan Lin
- School of Science, Changchun University of Science and Technology, Jilin, China; Jilin Provincial Key Laboratory of Ultrafast and Extreme Ultraviolet Optics, Changchun, China
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Mohamed SK, El Bakri Y, Abdul DA, Ahmad S, Albayati MR, Lai CH, Mague JT, Tolba MS. Synthesis, crystal structure, and a molecular modeling approach to identify effective antiviral hydrazide derivative against the main protease of SARS-CoV-2. J Mol Struct 2022; 1265:133391. [PMID: 35663190 PMCID: PMC9142792 DOI: 10.1016/j.molstruc.2022.133391] [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: 11/26/2021] [Revised: 05/22/2022] [Accepted: 05/27/2022] [Indexed: 01/25/2023]
Abstract
In the fall of 2019, a new type of coronavirus took place in Wuhan city, China, and rapidly spread across the world and urges the scientific community to develop antiviral therapeutic agents. In our effort we have synthesized a new hydrazide derivative, (E)-N'-(1-(4-bromophenyl)ethylidene)-2-(6-methoxynaphthalen-2-yl)propanehydrazide for this purpose because of its potential inhibitory proprieties. The asymmetric unit of the title molecule consists of two independent molecules differing noticeably in conformation. In the crystal, the independent molecules are linked by N-H···O and C-H···O hydrogen bonds and C-H···π(ring) interactions into helical chains extending along the b-axis direction. The chains are further joined by additional C-H···π(ring) interactions into the full 3-D structure. To obtain a structure-activity relationship, the DFT-NBO analysis is performed to study the intrinsic electronic properties of the title compound. Molecular modeling studies were also conducted to examine the binding affinity of the compound for the SARS-CoV-2 main protease enzyme and to determine intermolecular binding interactions. The compound revealed a stable binding mode at the enzyme active pocket with a binding energy value of -8.1 kcal/mol. Further, stable dynamics were revealed for the enzyme-compound complex and reported highly favorable binding energies. The net MMGBSA binding energy of the complex is -37.41 kcal/mol while the net MMPBSA binding energy is -40.5 kcal/mol. Overall, the compound disclosed the strongest bond of ing the main protease enzyme and might be a good lead for further structural optimization.
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Affiliation(s)
- Shaaban K Mohamed
- Chemistry and Environmental Division, Manchester Metropolitan University, Manchester M1 5GD, United Kingdom
- Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt
| | - Youness El Bakri
- Department of Theoretical and Applied Chemistry, South Ural State University, Lenin prospect 76, Chelyabinsk 454080, Russia
| | - Dalia A Abdul
- Department of Chemistry, College of Science, university of Sulaimani, Sulaimania, Iraq
| | - Sajjad Ahmad
- Department of Health and Biological Sciences, Abasyn University, Peshawar 25000, Pakistan
| | - Mustafa R Albayati
- Kirkuk University, College of Science, Department of Chemistry, Kirkuk, Iraq
| | - Chin-Hung Lai
- Department of Medical Applied Chemistry, Chung Shan Medical University, Taichung 40241, Taiwan
- Department of Medical Education, Chung Shan Medical University Hospital, 402 Taichung, Taiwan
| | - Joel T Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, United States
| | - Mahmoud S Tolba
- Chemistry Department, Faculty of Science, New Valley University, El-Kharja 72511, Egypt
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Anitha K, Nataraj A, Narayana B, Karthick T. Spectral Characteristics, DFT Exploration, Electronic Properties, Molecular Docking and Biological Activity of 2E-1-(3-Bromothiophene-2-yl)-3-(1, 3-Benzodioxol-5-yl)Prop-2-en-1-One Molecule. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2127802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2022]
Affiliation(s)
- K. Anitha
- Department of Physics, SRM Institute of Science and Technology, Chennai, Tamil Nadu, India
| | - A. Nataraj
- Department of Physics, SRM Institute of Science and Technology, Chennai, Tamil Nadu, India
| | - Badiadka Narayana
- Department of Studies in Chemistry, Mangalore University, Mangalore, Karnataka, India
| | - T. Karthick
- Department of Physics, School of Electrical and Electronics Engineering, SASTRA Deemed University, Tanjavur, Tamil Nadu, India
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9
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Appell M, Compton DL, Bosma WB. Raman spectral analysis for rapid determination of zearalenone and alpha-zearalanol. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 270:120842. [PMID: 35007910 DOI: 10.1016/j.saa.2021.120842] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 12/28/2021] [Accepted: 12/29/2021] [Indexed: 06/14/2023]
Abstract
Mycotoxins, including zearalenone, are important natural products produced by fungi that occasionally contaminate agricultural commodities and pose serious health risks to consumers of food and feed. Zearalenone and its metabolite, α-zearalanol, are of significant concern due to their estrogenic and anabolic steroid activity. Several governments have regulatory standards and advisory guidelines for zearalenone and α-zearalanol. Raman and ultraviolet spectroscopy were employed with density functional theory methods to evaluate spectroscopic properties to distinguish between zearalenone and α-zearalanol systematically. Raman bands were assigned based on vibrational frequency calculations. A portable Raman spectroscopy instrument (785 nm laser) distinguished between zearalenone and α-zearalanol in a label-free manner. Many vibrational bands of zearalenone and α-zearalanol are similar, including high-intensity peaks at 1315 cm-1 and 1650 cm-1. However, the intensities in the Raman spectra at 1465 cm-1, 1495 cm-1, and 1620 cm-1 enabled the identification of zearalenone. The Raman peak at 1450 cm-1 is associated with α-zearalanol. These vibrational bands serve as spectral indicators to differentiate between the structurally similar zearalenone and α-zearalanol.
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Affiliation(s)
- Michael Appell
- USDA, Agricultural Research Service, National Center for Agricultural Utilization Research, Mycotoxin Prevention and Applied Microbiology Research Unit. 1815 N. University, Peoria, IL 61604, USA.
| | - David L Compton
- USDA, Agricultural Research Service, National Center for Agricultural Utilization Research, Renewable Product Technology Research Unit. 1815 N. University, Peoria, IL 61604, USA.
| | - Wayne B Bosma
- Mund-Lagowski Department of Chemistry and Biochemistry, Bradley University, Peoria, IL 61625, USA.
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10
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Geethapriya J, Shanthidevi A, Arivazhagan M, Elangovan N, Thomas R. Synthesis, structural, DFT, quantum chemical modeling and molecular docking studies of (E)-4-(((5-methylfuran-2-yl)methylene)amino) benzenesulfonamide from 5-methyl-2-furaldehyde and sulfanilamide. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100418] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Lian S, Gao X, Song C, Li H, Chen A, Lin J. The characteristics of Raman spectroscopy of isomer CBD- and THC-Au nanoparticles using the density functional theory. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 268:120682. [PMID: 34906842 DOI: 10.1016/j.saa.2021.120682] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 11/21/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
The isomers cannabidiol (CBD) and Δ9-tetrahydrocannabinol (THC) can both be extracted from cannabis. We use density functional theory to study the Raman activity spectra, frontier molecular orbitals, and molecular electrostatic potentials of CBD, THC, and their respective gold complexes. A "selectivity enhancement" phenomenon for the spectral peaks at frequencies of 1144 cm-1 and 1553 cm-1 in the Raman spectrum of the CBD-Aun complex, and at frequencies of 865 cm-1, 1335 cm-1, and 1553 cm-1 in the Raman spectrum of the THC-Aun complex, was observed and explained. The frontier molecular orbital energy gaps of CBD and THC are 5.4085 eV and 5.4461 eV, respectively, indicating that CBD is more likely to react than THC. The CBD/THC-Au complexes had the strongest chemical activities and greater charge transfer effects with an Au3 cluster. The most electronegative sites of CBD and THC were found from molecular electrostatic potential (MEP) mapping. It is assumed that these sites are the adsorption sites of the CBD/THC molecules and gold surface. The MEP of the CBD/THC complexes also demonstrates the charge transfer effect between CBD/THC and Au. Both the "selectivity" phenomenon in the Raman activity spectra of the complex and the above assumption are explained by a surface selection rule. The conformation of the CBD/THC molecules on the gold surface are determined, showing that CBD is adsorbed vertically through the resorcinol structure while THC is adsorbed vertically through the tetrahydropyran and benzene ring.
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Affiliation(s)
- Shuai Lian
- School of Science, Changchun University of Science and Technology, Chang Chun, China
| | - Xun Gao
- School of Science, Changchun University of Science and Technology, Chang Chun, China.
| | - Chao Song
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Chang Chun, China
| | - Hui Li
- School of Science, Changchun University of Science and Technology, Chang Chun, China
| | | | - Jingquan Lin
- School of Science, Changchun University of Science and Technology, Chang Chun, China
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12
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Vital theoretical and inter molecular docking study of (E)-3-[(2,6-dimethylphenyl)diazenyl]-7-methyl-1H-indazole. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Lai X, Ye S, Chen L, Chen J, Zhang N, Zhang Y, Wu J, Yao H. An Open-Label, Randomized, 2-Way, Crossover Bioequivalence Study of Cefradine Capsules in Healthy Chinese Volunteers. Clin Pharmacol Drug Dev 2021; 10:1478-1484. [PMID: 34148297 DOI: 10.1002/cpdd.991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 05/10/2021] [Indexed: 11/08/2022]
Abstract
The purpose of this study was to evaluate whether test cefradine capsules and reference cefradine capsules were bioequivalent in healthy Chinese volunteers. An open-label, randomized, biperiodic, crossover design was used. In each of the 2 study periods (separated by a 1-week washout period), 250-mg single doses of either the test or reference cefradine capsule were administered to study participants under fasted and fed conditions. Blood samples were collected at intervals from predose to 8 hours afterward. In the fasting study, the 90% confidence intervals (90%CI) of the Cmax , AUC0-8h , and AUC0-∞ for the test and reference preparations were 93.7%-112.2%, 94.6%-100.8%, and 94.7%-100.9%, respectively. In the fed study, the 90%CI of the Cmax , AUC0-8h , and AUC0-∞ for the test and reference preparations was 81.0%-99.1%, 100.5%-106.3%, and 100.5%-105.9%, respectively. The results showed that the test cefradine capsules and the reference formulation are bioequivalent under both fasting and fed conditions.
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Affiliation(s)
- Xiuping Lai
- Phase I Clinical Trial Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Suiwen Ye
- Phase I Clinical Trial Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Liuhan Chen
- Phase I Clinical Trial Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Junyi Chen
- Phase I Clinical Trial Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Nan Zhang
- Phase I Clinical Trial Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Yiwen Zhang
- Phase I Clinical Trial Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Junyan Wu
- Phase I Clinical Trial Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Herui Yao
- Phase I Clinical Trial Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
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