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Reactivity properties and adsorption behavior of a triazole derivative – DFT and MD simulation studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117439] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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2
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Al-Omary FAM, Chowdary Gude N, Al-Rasheed LS, Alkahtani HN, Hassan HM, Al-Abdullah ES, El-Emam AA, Percino MJ, Thamotharan S. X-ray and theoretical investigation of ( Z)-3-(adamantan-1-yl)-1-(phenyl or 3-chlorophenyl)- S-(4-bromobenzyl)isothioureas: an exploration involving weak non-covalent interactions, chemotherapeutic activities and QM/MM binding energy. J Biomol Struct Dyn 2020; 40:2530-2545. [PMID: 33150854 DOI: 10.1080/07391102.2020.1840443] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
A detailed exploration of crystal packing of two adamantane-isothiourea hybrid derivatives along with a known closely related structure has been performed to delineate the effect of halogen substituents and the role of weak intermolecular interactions in their supramolecular architectures. The adamantane-isothiourea hybrid derivatives used in the present study are (Z)-3-(Adamantan-1-yl)-S-(4-bromobenzyl)-1-phenylisothiourea (1), C24H27BrN2S and (Z)-3-(Adamantan-1-yl)-S-(4-bromobenzyl)-1-(3-chlorophenyl)isothiourea (2), C24H26BrClN2S, characterized by X-ray crystallography. The X-ray structures revealed that the molecular conformation of 1 and 2 are different and stabilized by intramolecular C-H···N interactions. In addition, a short intramolecular H···H contact is formed in 2. The Hirshfeld surface analysis was used to delineate the nature of different intermolecular interactions and their contributions toward crystal packing. The quantitative analysis of strengths of molecular dimers existed in 1 and 2 has been performed using the PIXEL method. The electrostatic potential map clearly revealed nature and strength of σ-holes at Br and Cl atoms. The topological analysis was used to characterize the nature and the strength of various intermolecular interactions including the type I Br···Br contact. Interestingly, all the H-H bonding observed in 1 and 2 show closed-shell in nature. Further, an in-vitro antimicrobial activity studies suggest that the title compounds exhibited potent antibacterial activity against all the tested Gram-positive bacterial strains and Gram-negative Escherichia coli. Compound 2 showed marked anti-proliferative activity against MCF-7 and HeLa cell lines.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Fatmah A M Al-Omary
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Nikhila Chowdary Gude
- Biomolecular Crystallography Laboratory, Department of Bioinformatics, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, India
| | - Lamees S Al-Rasheed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Hamad N Alkahtani
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Hanan M Hassan
- Department of Pharmacology and Biochemistry, College of Pharmacy, Delta University for Science and Technology, Mansoura, Dakahliya, Egypt
| | - Ebtehal S Al-Abdullah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Ali A El-Emam
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - M Judith Percino
- Unidad de Polímeros y Electrónica Orgánica, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, San Pedro Zacachimalpa, Puebla-C.P, Mexico
| | - Subbiah Thamotharan
- Biomolecular Crystallography Laboratory, Department of Bioinformatics, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, India
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Abdelrazeq AS, Ghabbour HA, El-Emam AA, Osman DA, Garcia-Granda S. Synthesis and crystal structure of 3-(adamantan-1-yl)-4-(2-bromo-4-fluoro-phen-yl)-1 H-1,2,4-triazole-5(4 H)-thione. Acta Crystallogr E Crystallogr Commun 2020; 76:162-166. [PMID: 32071740 PMCID: PMC7001835 DOI: 10.1107/s2056989020000092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/06/2020] [Indexed: 11/13/2022]
Abstract
In the title compound, C18H19BrFN3S, the 1,2,4-triazole ring is nearly planar with a maximum deviation of -0.009 (3) and 0.009 (4) Å, respectively, for the S-bound C atom and the N atom bonded to the bromo-fluoro-phenyl ring. The phenyl and triazole rings are almost perpendicular to each other, forming a dihedral angle of 89.5 (2)°. In the crystal, the mol-ecules are linked by weak C-H⋯π(phen-yl) inter-actions, forming supra-molecular chains extending along the c-axis direction. The crystal packing is further consolidated by inter-molecular N-H⋯S hydrogen bonds and by weak C-H⋯S inter-actions, yielding double chains propagating along the a-axis direction. The crystal studied was refined as a racemic twin.
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Affiliation(s)
- Alaa S. Abdelrazeq
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt
| | - Hazem A. Ghabbour
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt
| | - Ali A. El-Emam
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt
| | - Doaa Ahmed Osman
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, Oviedo University-CINN, Oviedo 33006, Spain
| | - Santiago Garcia-Granda
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, Oviedo University-CINN, Oviedo 33006, Spain
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Al-Wahaibi LH, Sert Y, Ucun F, Al-Shaalan NH, Alsfouk A, El-Emam AA, Karakaya M. Theoretical and experimental spectroscopic studies, XPS analysis, dimer interaction energies and molecular docking study of 5-(adamantan-1-yl)-N-methyl-1,3,4-thiadiazol-2-amine. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 2019. [DOI: 10.1016/j.jpcs.2019.109091] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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5
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Sert Y, Al-Wahaibi LH, Gökce H, Hassan HM, Alsfouk A, El-Emam AA. Molecular docking, Hirshfeld surface analysis and spectroscopic investigations of 1-(adamantan-1-yl)-3-(4-fluorophenyl)thiourea: A potential bioactive agent. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.136762] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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6
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Bolshchikov BD, Tsvetkov VB, Alikhanova OL, Serbin AV. How to Fight Kinetics in Complex Radical Polymerization Processes: Theoretical Case Study of Poly(divinyl ether‐alt‐maleic anhydride). MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Boris D. Bolshchikov
- Polyelectrolytes and Biomedical Polymers Laboratory A.V. Topchiev Institute of Petrochemical Synthesis RAS, Leninsky prospect, 29 Moscow 119991 Russia
| | - Vladimir B. Tsvetkov
- Polyelectrolytes and Biomedical Polymers Laboratory A.V. Topchiev Institute of Petrochemical Synthesis RAS, Leninsky prospect, 29 Moscow 119991 Russia
- Department of Molecular VirologyFSBI Research Institute of Influenza Ministry of Health of the Russian Federation Professor Popov Street 15/17 Saint Petersburg 197376 Russia
- Federal Research and Clinical Centre of Physical‐Chemical Medicine Federal Medical Biological Agency Malaya Pirogovskaya 1a Moscow 119435 Russia
- Computational Oncology Group I.M. Sechenov First Moscow State Medical University Trubetskaya Str. 8‐2 119991 Moscow Russia
| | - Olga L. Alikhanova
- Polyelectrolytes and Biomedical Polymers Laboratory A.V. Topchiev Institute of Petrochemical Synthesis RAS, Leninsky prospect, 29 Moscow 119991 Russia
- Research Center for Biomodulators and Drugs Health Research and Development Foundation Admiral Ushakov Boulevard 14–209 Moscow 117042 Russia
| | - Alexander V. Serbin
- Polyelectrolytes and Biomedical Polymers Laboratory A.V. Topchiev Institute of Petrochemical Synthesis RAS, Leninsky prospect, 29 Moscow 119991 Russia
- Research Center for Biomodulators and Drugs Health Research and Development Foundation Admiral Ushakov Boulevard 14–209 Moscow 117042 Russia
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7
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Al-Wahaibi LH, Alsfouk A, El-Emam AA, Blacque O. Crystal structures and Hirshfeld surface analysis of 2-(adamantan-1-yl)-5-(4-fluoro-phen-yl)-1,3,4-oxa-diazole and 2-(adamantan-1-yl)-5-(4-chloro-phen-yl)-1,3,4-oxa-diazole. Acta Crystallogr E Crystallogr Commun 2019; 75:611-615. [PMID: 31110797 PMCID: PMC6505599 DOI: 10.1107/s2056989019004651] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 04/05/2019] [Indexed: 11/26/2022]
Abstract
The crystal structures of the title adamantane-oxa-diazole hybrid compounds, C18H19FN2O (I) and C18H19ClN2O (II), are built up from an adamantane unit and a halogenophenyl ring, [X = F (I), Cl (II)], in position 5 on the central 1,3,4-oxa-diazole unit. The mol-ecular structures are very similar, only the relative orientation of the halogenophenyl ring in comparison with the central five-membered ring differs slightly. In the crystals of both compounds, mol-ecules are linked by pairs of C-H⋯N hydrogen bonds, forming inversion dimers with R 2 2(12) ring motifs. In (I) the dimers are connected by C-H⋯F inter-actions, forming slabs lying parallel to the bc plane. In (II), the dimers are linked by C-H⋯π and offset π-π inter-actions [inter-planar distance = 3.4039 (9) Å], forming layers parallel to (10).
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Affiliation(s)
- Lamya H. Al-Wahaibi
- Department of Chemistry, College of Sciences, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Aisha Alsfouk
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Ali A. El-Emam
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt
| | - Olivier Blacque
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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8
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Bolshchikov BD, Tsvetkov VB, Alikhanova OL, Serbin AV. [Modeling and theoretical analysis of ring specific mimicry in view of isomerism within medicinal promising oligomers of "DIVEMA"]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2019; 65:133-151. [PMID: 30950818 DOI: 10.18097/pbmc20196502133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The furan or pyran related hetero cycles play basic role in structural units of nucleic acids (NA) and polysaccharides (PS), significantly predetermining their functional specifics. Some of such properties, in great relevancy for medicine, can be imitated through mimicry of polymers synthetic. Particularly, a formation of similar cycloisomeric chains is possible in process of free-radical cyclocopolymerization of divinyl ether (DVE) and maleic anhydride (MA). The products yielded (DVEMA) of general formula [DVE(MA)-alt-MA]n become precursors for a broad family of water-soluble derivatives capable of wide spectrum of bioactivity, including induction of interferon, immune-stimulated and direct antiviral protection. In this connection, the knowledge: what is content of different heterocyclic isomers in backbone of the preparations and what their partial contributions in promotion of the certain bioactivities observed, are in great importance. Available experimental data (NMR, IR, etc.), controversial for interpretations, didn't elucidate a required estimation of the DVEMA isomerism. The current work represents an independent exploration of the problem via quantum chemistry-based analysis of kinetic (activation barriers) and thermodynamic (enthalpies) priorities in competition between variable isomerism within the chain synthesis. The system is considered in maximal range of hypothetically allowable variations of two levels for double regioselective bifurcations: there are four competitive ways, each of which involves a sequence of four type elementary reactions for a diverse-isomeric formation of chain units. A genesis of six chiral centers (62 stereoisomers permitted) per every of the four part ways was accounted in view for up to 256 isomeric variations in total. The required time-minimized but precisely accurate computations were conducted via B3LYP/6-31G(d), M06-2X/6-311+G(d), M06-2X/6-31+G(2df,p) techniques, which were preselected through model test-systems. As a result, the mechanisms, crucial points and factors for the process-permitted regulation of isomeric content of DVEMA were studied in details. The narrow enough set of most probable enantiomers within highly competitive 5-exo- and 6-endo- ring closing sub-ways was revealed. The results obtained are very actual for an adequate modeling (docking / molecular dynamics) of DVEMA derivatives in their interactions with biopolymer targets, in search for purposed advancement of current background in design and synthesis of highly effective agents for combined antiviral protection (against HIV, flu, herpes, and other infections).
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Affiliation(s)
- B D Bolshchikov
- Topchiev Institute of Petrochemical Synthesis, RAS, Moscow, Russia
| | - V B Tsvetkov
- Research Center for Biomodulators, Health Research and Development Foundation, Moscow, Russia
| | - O L Alikhanova
- Topchiev Institute of Petrochemical Synthesis, RAS, Moscow, Russia; Research Center for Biomodulators, Health Research and Development Foundation, Moscow, Russia
| | - A V Serbin
- Topchiev Institute of Petrochemical Synthesis, RAS, Moscow, Russia; Research Center for Biomodulators, Health Research and Development Foundation, Moscow, Russia
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Al-Wahaibi LH, Hassan HM, Ghabbour HA, El-Emam AA. Crystal structure of 3,5-bis(trifluoromethyl)benzyl( Z)- N-(adamantan-1-yl)morpholine-4-carbothioimidate, C 24H 28F 6N 2OS. Z KRIST-NEW CRYST ST 2018. [DOI: 10.1515/ncrs-2017-0365] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C24H28F6N2OS, monoclinic, P21/n (no. 14), a = 17.4112(7) Å, b = 8.3694(3) Å, c = 17.6728(7) Å, β = 104.612(2)°, V = 2492.01(17) Å3, Z = 4, R
gt(F) = 0.0603, wR(F
2) = 0.1704, T = 293(2) K.
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Affiliation(s)
- Lamya H. Al-Wahaibi
- Department of Chemistry, College of Sciences , Princess Nourah Bint Abdulrahman University , Riyadh 11671, Saudi Arabia
| | - Hanan M. Hassan
- Department of Pharmaceutical Sciences , College of Pharmacy, Princess Nourah Bint Abdulrahman University , Riyadh 11671, Saudi Arabia
- Department of Pharmacology and Biochemistry , College of Pharmacy, Delta University for Science and Technology , Mansoura , Egypt
| | - Hazem A. Ghabbour
- Department of Medicinal Chemistry, Faculty of Pharmacy , University of Mansoura , Mansoura 35516, Egypt
| | - Ali A. El-Emam
- Department of Medicinal Chemistry, Faculty of Pharmacy , University of Mansoura , Mansoura 35516, Egypt
- Department of Pharmaceutical Chemistry, College of Pharmacy , King Saud University , P.O. Box 2457 , Riyadh 11451, Saudi Arabia
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10
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Bolshchikov BD, Tsvetkov VB, Serbin AV. Practical procedure for a theoretical investigation of thermodynamics and kinetics aspects of different-scale radical reactions from addition and cyclization to cyclocopolymerization involving maleic anhydride and divinyl ether. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.05.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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11
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Baowan D, Hill JM, Bacsa W. Continuous approximation for interaction energy of adamantane encapsulated inside carbon nanotubes. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2017.12.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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El-Emam AA, Al-Omary FAM, Al-Rasheed LS, Ghabbour HA, Al-Abdullah ES. Crystal structure of (Z)-3-(adamantan-1-yl)-1-(3-chlorophenyl)-S-benzylisothiourea, C24H27ClN2S. Z KRIST-NEW CRYST ST 2017. [DOI: 10.1515/ncrs-2016-0315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractC24H27ClN2S, triclinicP1̅ (no. 2),a= 7.1670(3) Å,b= 12.2734(6) Å,c= 13.1560(6) Å,α= 109.605(2)°,β= 96.515(2)°,γ= 97.312(2)°,V= 1066.08(8) Å3,Z= 2,Rgt(F)= 0.0515,wRref(F2) = 0.1396,T= 296(2) K.
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Affiliation(s)
- Ali A. El-Emam
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Fatmah A. M. Al-Omary
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Lamees S. Al-Rasheed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Hazem A. Ghabbour
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt
| | - Ebtehal S. Al-Abdullah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
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13
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Al-Wahaibi LH, Hassan HM, Abo-Kamar AM, Ghabbour HA, El-Emam AA. Adamantane-Isothiourea Hybrid Derivatives: Synthesis, Characterization, In Vitro Antimicrobial, and In Vivo Hypoglycemic Activities. Molecules 2017; 22:molecules22050710. [PMID: 28468231 PMCID: PMC6154638 DOI: 10.3390/molecules22050710] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 04/27/2017] [Accepted: 04/27/2017] [Indexed: 12/31/2022] Open
Abstract
A new series of adamantane-isothiourea hybrid derivatives, namely 4-arylmethyl (Z)-N'-(adamantan-1-yl)-morpholine-4-carbothioimidates 7a-e and 4-arylmethyl (Z)-N'-(adamantan-1-yl)-4-phenylpiperazine-1-carbothioimidates 8a-e were prepared via the reaction of N-(adamantan-1-yl)morpholine-4-carbothioamide 5 and N-(adamantan-1-yl)-4-phenylpiperazine-1-carbothioamide 6 with benzyl or substituted benzyl bromides, in acetone, in the presence of anhydrous potassium carbonate. The structures of the synthesized compounds were confirmed by ¹H-NMR, 13C-NMR, electrospray ionization mass spectral (ESI-MS) data, and X-ray crystallographic data. The in vitro antimicrobial activity of the new compounds was determined against certain standard strains of pathogenic bacteria and the yeast-like pathogenic fungus Candida albicans. Compounds 7b, 7d and 7e displayed potent broad-spectrum antibacterial activity, while compounds 7a, 7c, 8b, 8d and 8e were active against the tested Gram-positive bacteria. The in vivo oral hypoglycemic activity of the new compounds was carried on streptozotocin (STZ)-induced diabetic rats. Compounds 7a, 8ab, and 8b produced potent dose-independent reduction of serum glucose levels, compared to the potent hypoglycemic drug gliclazide.
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Affiliation(s)
- Lamya H Al-Wahaibi
- Department of Chemistry, College of Sciences, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia.
| | - Hanan M Hassan
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia.
| | - Amal M Abo-Kamar
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia.
- Department of Microbiology, Faculty of Pharmacy, Tanta University, Tanta, Egypt.
| | - Hazem A Ghabbour
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11671, Saudi Arabia.
| | - Ali A El-Emam
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11671, Saudi Arabia.
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Al-Wahaibi LH, Hassan HM, Abo-Kamar AM, Ghabbour HA, El-Emam AA. Crystal structure of 4-bromobenzyl ( Z)- N′-(adamantan-1-yl)-4-phenylpiperazine-1-carbothioimidate, C 28H 34BrN 3S. Z KRIST-NEW CRYST ST 2017. [DOI: 10.1515/ncrs-2016-0184] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C28H34BrN3S, monoclinic, P21/c (no. 14), a = 10.4529(8) Å, b = 11.8724(10) Å, c = 21.3800(19) Å, β = 101.864(3)°, V = 2596.6(4) Å3, Z = 4, R
gt(F) = 0.060, wR
ref(F
2) = 0.148, T = 296(2).
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Affiliation(s)
- Lamya H. Al-Wahaibi
- Department of Chemistry, College of Sciences, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Hanan M. Hassan
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Amal M. Abo-Kamar
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Hazem A. Ghabbour
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt
| | - Ali A. El-Emam
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
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Aljohar HI, Ghabbour HA, Abdelbaky MS, Garcia-Granda S, El-Emam AA. Crystal structure of N′-[(1E)-(2,6-dichlorophenyl)-methylidene]adamantane-1-carbohydrazide, C18H20Cl2N2O. Z KRIST-NEW CRYST ST 2016. [DOI: 10.1515/ncrs-2016-0038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractC18H20Cl2N2O, orthorhombic,Pbca(No. 61),a= 8.1023(2) Å,b= 18.7063(4) Å,c= 22.5509(6) Å,V= 3417.91(14) Å3,Z= 8,Rgt(F) = 0.0496,wRref(F2) = 0.1535,T= 293(2).
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Affiliation(s)
- Haya I. Aljohar
- 1Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Hazem A. Ghabbour
- 1Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Mohammed S.M. Abdelbaky
- 2Departamento de Quimica Fisica y Analitica, Facultad de Quimica, Universidad de Oviedo - CINN, C/Julian Claveria, 8, 33006 Oviedo, (Asturias), Spain
| | - Santiago Garcia-Granda
- 2Departamento de Quimica Fisica y Analitica, Facultad de Quimica, Universidad de Oviedo - CINN, C/Julian Claveria, 8, 33006 Oviedo, (Asturias), Spain
| | - Ali A. El-Emam
- 1Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
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Al-Alshaikh MA, Ghabbour HA, Abuelizz HA, Alruqi OS, El-Emam AA. Crystal structure of 3-(adamantan-1-yl)-1-[(4-benzylpiperazin-1-yl)methyl]-4-[( E)-(2,6-difluorobenzylidene)amino]-1 H-1,2,4-triazole-5(4 H)-thione, C 31H 36F 2N 6S. Z KRIST-NEW CRYST ST 2016. [DOI: 10.1515/ncrs-2016-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C31H36F2N6S, monoclinic, P21/c (no. 14), a = 14.7561(8) Å, b = 24.6766(13) Å, c = 7.7811(4) Å, β = 95.888(2)°, V = 2818.4(3) Å3, Z = 4, R
gt
(F) = 0.0624, wR
ref
(F
2
) = 0.1445, T = 100 K.
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Affiliation(s)
- Monirah A. Al-Alshaikh
- Department of Chemistry , College of Sciences, King Saud University , Riyadh, 11451, Saudi Arabia
| | | | - Hatem A. Abuelizz
- Department of Pharmaceutical Chemistry , College of Pharmacy, King Saud University , P. O. Box 2457, Riaydh 11451, Saudi Arabia
| | - Obaid S. Alruqi
- Department of Pharmaceutical Chemistry , College of Pharmacy, King Saud University , P. O. Box 2457, Riaydh 11451, Saudi Arabia
| | - Ali A. El-Emam
- Department of Pharmaceutical Chemistry , College of Pharmacy, King Saud University , P. O. Box 2457, Riaydh 11451, Saudi Arabia
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17
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Klimochkin YN, Shiryaev VA, Leonova MV. Antiviral properties of cage compounds. New prospects. Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1035-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Al-Wabli RI, El-Emam NA, Ghabbour HA, Haress NG, El-Emam AA. Crystal structure of 5-(adamantan-1-yl)-3-[(2-trifluoromethylanilino)methyl]-2,3-dihydro-1,3,4-oxadiazole-2-thione, C 20H 22F 3N 3OS. Z KRIST-NEW CRYST ST 2016. [DOI: 10.1515/ncrs-2015-0278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C20H22F3N3OS, monoclinic, P21/c (no. 14), a = 13.1987(5) Å, b = 10.2772(4) Å, c = 14.1730(6) Å, β = 92.655(2)°, V = 1920.44(13) Å3, Z = 4, R
gt
(F) = 0.0536, wR
ref
(F
2
) = 0.1612, T = 100 K.
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Affiliation(s)
- Reem I. Al-Wabli
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riaydh 11451, Saudi Arabia
| | - Nada A. El-Emam
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riaydh 11451, Saudi Arabia
| | | | - Nadia G. Haress
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riaydh 11451, Saudi Arabia
| | - Ali A. El-Emam
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riaydh 11451, Saudi Arabia
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19
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Abstract
AbstractC16H19N3O, orthorhombic, Pna21 (no. 33), a = 8.0251(7) Å, b = 10.1627(9) Å, c = 17.0686(16) Å, V = 1392.1(2) Å3, Z = 4, Rgt(F) = 0.064, wR(F2) = 0.109, T = 100 K.
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20
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Al-Alshaikh MA, Ghabbour HA, Al-Tamimi AMS, Abdelbaky MS, Garcia-Granda S, El-Emam AA. Crystal structure of 5-(adamantan-1-yl)-3-[(4-chloroanilino)methyl]-2,3-dihydro-1,3,4-oxadiazole-2-thione, C 19H 22ClN 3OS. Z KRIST-NEW CRYST ST 2016. [DOI: 10.1515/ncrs-2015-0151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C19H22ClN3OS, orthorhombic, P212121 (no. 19), a = 7.0418(2) Å, b = 10.8802(3) Å, c = 23.5506(6) Å, V = 1804.36(8) Å3, Z = 4, R
gt
(F) = 0.0413, wR
ref
(F
2
) = 0.1110, T = 100 K.
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Affiliation(s)
- Monirah A. Al-Alshaikh
- Department of Chemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | | | - Abdul-Malek S. Al-Tamimi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam bin, Abdulaziz University, Alkharj 11942, Saudi Arabia
| | - Mohammed S.M. Abdelbaky
- Departamento de Quimica Fisica y Analitica, Facultad de Quimica, Universidad de Oviedo – CINN, Av. Julián Claverıa, 8, 33006 Oviedo, (Asturias), Spain
| | - Santiago Garcia-Granda
- Departamento de Quimica Fisica y Analitica, Facultad de Quimica, Universidad de Oviedo – CINN, Av. Julián Claverıa, 8, 33006 Oviedo, (Asturias), Spain
| | - Ali A. El-Emam
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud, University, Riyadh 11451, Saudi Arabia
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21
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Tazeem T, Han X, Zhou Q, Wei J, Tien P, Yang G, Wu S, Dong C. A facile one-pot multi-component synthesis of novel adamantine substituted imidazo[1,2-a]pyridine derivatives: identification and structure–activity relationship study of their anti-HIV-1 activity. RSC Adv 2016. [DOI: 10.1039/c6ra17656a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
A series of adamantine substituted imidazo[1,2-a]pyridine derivatives were developed through a one-pot multi-component Groebke–Blackburn–Bienaymé reaction, among them several compounds were identified to be the potent inhibitors against HIV-1 cells.
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Affiliation(s)
- Tazeem Tazeem
- State Key Laboratory of Virology
- College of Life Sciences
- Wuhan University
- Wuhan 430072
- China
| | - Xin Han
- State Key Laboratory of Virology
- College of Life Sciences
- Wuhan University
- Wuhan 430072
- China
| | - Qingjun Zhou
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials
- Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules
- Hubei University
- Wuhan 430062
- China
| | - Jingchen Wei
- Department of Pharmacology
- Guilin Medical University
- Guilin
- China
| | - Po Tien
- State Key Laboratory of Virology
- College of Life Sciences
- Wuhan University
- Wuhan 430072
- China
| | - Guichun Yang
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials
- Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules
- Hubei University
- Wuhan 430062
- China
| | - Shuwen Wu
- State Key Laboratory of Virology
- College of Life Sciences
- Wuhan University
- Wuhan 430072
- China
| | - Chune Dong
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals
- Wuhan University School of Pharmaceutical Sciences
- Wuhan 430071
- China
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22
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Al-Omary FA, Mary YS, Panicker CY, El-Emam AA, Al-Swaidan IA, Al-Saadi AA, Van Alsenoy C. Spectroscopic investigations, NBO, HOMO–LUMO, NLO analysis and molecular docking of 5-(adamantan-1-yl)-3-anilinomethyl-2,3-dihydro-1,3,4-oxadiazole-2-thione, a potential bioactive agent. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.03.049] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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23
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Al-Abdullah ES, Al-Tuwaijri HM, Hassan HM, Al-Alshaikh MA, Habib EE, El-Emam AA. Synthesis, Antimicrobial and Hypoglycemic Activities of Novel N-(1-Adamantyl)carbothioamide Derivatives. Molecules 2015; 20:8125-43. [PMID: 25955889 PMCID: PMC6272754 DOI: 10.3390/molecules20058125] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 05/01/2015] [Accepted: 05/05/2015] [Indexed: 12/26/2022] Open
Abstract
The reaction of 1-adamantyl isothiocyanate 4 with the various cyclic secondary amines yielded the corresponding N-(1-adamantyl)carbothioamides 5a–e, 6, 7, 8a–c and 9. Similarly, the reaction of 4 with piperazine and trans-2,5-dimethylpiperazine in 2:1 molar ratio yielded the corresponding N,N'-bis(1-adamantyl)piperazine-1,4-dicarbothioamides 10a and 10b, respectively. The reaction of N-(1-adamantyl)-4-ethoxycarbonylpiperidine-1-carbothioamide 8c with excess hydrazine hydrate yielded the target carbohydrazide 11, in addition to 4-(1-adamantyl)thiosemicarbazide 12 as a minor product. The reaction of the carbohydrazide 11 with methyl or phenyl isothiocyanate followed by heating in aqueous sodium hydroxide yielded the 1,2,4-triazole analogues 14a and 14b. The reaction of the carbohydrazide 11 with various aromatic aldehydes yielded the corresponding N'-arylideneamino derivatives 15a–g. The compounds 5a–e, 6, 7, 8a–c, 9, 10a, 10b, 14a, 14b and 15a–g were tested for in vitro antimicrobial activity against certain strains of pathogenic Gram-positive and Gram-negative bacteria and the yeast-like fungus Candida albicans. The compounds 5c, 5d, 5e, 6, 7, 10a, 10b, 15a, 15f and 15g showed potent antibacterial activity against one or more of the tested microorganisms. The oral hypoglycemic activity of compounds 5c, 6, 8b, 9, 14a and 15b was determined in streptozotocin (STZ)-induced diabetic rats. Compound 5c produced significant reduction of serum glucose levels, compared to gliclazide.
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Affiliation(s)
- Ebtehal S Al-Abdullah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Hanaa M Al-Tuwaijri
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Hanan M Hassan
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia.
| | - Monirah A Al-Alshaikh
- Department of Chemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Elsayed E Habib
- Department of Microbiology, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt.
- Department of Pharmaceutics and Pharmaceutical Technology (Microbiology), College of Pharmacy, Taibah University, Almadinah Almunawwarah 11344, Saudi Arabia.
| | - Ali A El-Emam
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
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24
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Haress NG, Al-Omary F, El-Emam AA, Mary YS, Panicker CY, Al-Saadi AA, War JA, Van Alsenoy C. Spectroscopic investigation (FT-IR and FT-Raman), vibrational assignments, HOMO–LUMO analysis and molecular docking study of 2-(Adamantan-1-yl)-5-(4-nitrophenyl)-1,3,4-oxadiazole. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 135:973-83. [PMID: 25168235 DOI: 10.1016/j.saa.2014.07.077] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 07/10/2014] [Accepted: 07/28/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Nadia G Haress
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Fatmah Al-Omary
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ali A El-Emam
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; King Abdullah Institute for Nanotechnology (KAIN), King Saud University, Riyadh 11451, Saudi Arabia
| | - Y Sheena Mary
- Department of Physics, Fatima Mata National College, Kollam, Kerala, India.
| | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India
| | - Abdulaziz A Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Javeed Ahmad War
- Department of Chemistry, Dr. H. S. Gour Central University, Sagar, M.P. 470003, India
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25
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FT-IR and FT-Raman spectroscopic signatures, vibrational assignments, NBO, NLO analysis and molecular docking study of 2-{[5-(adamantan-1-yl)-4-methyl-4H-1,2,4-triazol-3-yl]sulfanyl}-N,N-dimethylethanamine. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 140:1-14. [PMID: 25579797 DOI: 10.1016/j.saa.2014.12.064] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Revised: 11/27/2014] [Accepted: 12/17/2014] [Indexed: 01/30/2023]
Abstract
FT-Raman and FT-IR spectra of the title compound 2-{[5-(adamantan-1-yl)-4-methyl-4H-1,2,4-triazol-3-yl]sulfanyl}-N,N-dimethylethanamine were recorded and investigated. The DFT/B3LYP/6-311++G(d,p) method was used to compute the vibrational wavenumbers. A good coherence between experimental and theoretical wavenumbers shows the preciseness of the assignments. NLO properties like the dipole moment, polarizability, first static hyperpolarizability, molecular electrostatic potential surface and contour map have been calculated to get a better cognizance of the properties of the title molecule. Natural bond orbital analysis has been applied to estimate the stability of the molecule arising from charge delocalization. The molecular docking studies concede that title compound may exhibit HIV-1 Protease 1N49 inhibitory activity.
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26
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Antimicrobial and hypoglycemic activities of novel N-Mannich bases derived from 5-(1-adamantyl)-4-substituted-1,2,4-triazoline-3-thiones. Int J Mol Sci 2014; 15:22995-3010. [PMID: 25514407 PMCID: PMC4284750 DOI: 10.3390/ijms151222995] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 11/26/2014] [Accepted: 12/08/2014] [Indexed: 11/16/2022] Open
Abstract
The reaction of 5-(1-adamantyl)-4-ethyl or allyl-1,2,4-triazoline-3-thione with formaldehyde solution and various 1-substituted piperazines yielded the corresponding N-Mannich bases. The newly synthesized N-Mannich bases were tested for in vitro inhibitory activities against a panel of Gram-positive and Gram-negative bacteria and the yeast-like pathogenic fungus Candida albicans. Six compounds showed potent antibacterial activity against one or more of the tested microorganisms, while two compounds exhibited moderate activity against the tested Gram-positive bacteria. None of the newly synthesized compounds were proved to possess marked activity against Candida albicans. The oral hypoglycemic activity of six compounds was determined in streptozotocin (STZ)-induced diabetic rats. Four compounds produced significant strong dose-dependent reduction of serum glucose levels, compared to gliclazide at 10 mg/kg dose level (potency ratio > 75%).
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27
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Theoretical calculations, cytotoxic evaluation, and molecular docking studies of 4-(1-adamantyl)-5-[2-(3-hydroxynapthyl)]-2H-1,2,4-triazole-3(4H)-thione as a novel chemotherapeutic agent. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1735-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Al-Abdullah ES, Sebastian SSHR, Al-Wabli RI, El-Emam AA, Panicker CY, Van Alsenoy C. Vibrational spectroscopic studies (FT-IR, FT-Raman) and quantum chemical calculations on 5-(Adamantan-1-yl)-3-[(4-fluoroanilino)methyl]-2,3-dihydro-1,3,4-oxadiazole-2-thione, a potential chemotherapeutic agent. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 133:605-18. [PMID: 24992920 DOI: 10.1016/j.saa.2014.06.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 05/23/2014] [Accepted: 06/03/2014] [Indexed: 11/19/2022]
Abstract
The optimized molecular structure, vibrational frequencies, corresponding vibrational assignments of 5-(Adamantan-1-yl)-3-[(4-fluoroanilino)methyl]-2,3-dihydro-1,3,4-oxadiazole-2-thione are investigated experimentally and theoretically using Gaussian09 software package. Potential energy distribution of normal modes vibrations was done using GAR2PED program. The HOMO and LUMO analysis are used to determine the charge transfer within the molecule. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. The calculated geometrical parameters are in agreement with the XRD data. The calculated first hyperpolarizability is high and the title compound is an attractive candidate for further studies in non-linear optical applications. To estimate the chemical reactivity of the molecule, the molecular electrostatic potential is calculated for the optimized geometry of the molecule.
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Affiliation(s)
- Ebtehal S Al-Abdullah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sr S H Roseline Sebastian
- Department of Physics, Karpagam University, Eachanari, Coimbatore, Tamil Nadu, India; Christhu Jyothi Public School, Rajakkad, Idukki, Kerala, India
| | - Reem I Al-Wabli
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ali A El-Emam
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; King Abdullah Institute for Nanotechnology (KAIN), King Saud University, Riyadh 11451, Saudi Arabia
| | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
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29
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Tsvetkov VB, Serbin AV. Molecular dynamics modeling the synthetic and biological polymers interactions pre-studied via docking: anchors modified polyanions interference with the HIV-1 fusion mediator. J Comput Aided Mol Des 2014; 28:647-73. [PMID: 24862639 PMCID: PMC4050303 DOI: 10.1007/s10822-014-9749-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 05/05/2014] [Indexed: 11/28/2022]
Abstract
In previous works we reported the design, synthesis and in vitro evaluations of synthetic anionic polymers modified by alicyclic pendant groups (hydrophobic anchors), as a novel class of inhibitors of the human immunodeficiency virus type 1 (HIV-1) entry into human cells. Recently, these synthetic polymers interactions with key mediator of HIV-1 entry-fusion, the tri-helix core of the first heptad repeat regions [HR1]3 of viral envelope protein gp41, were pre-studied via docking in terms of newly formulated algorithm for stepwise approximation from fragments of polymeric backbone and side-group models toward real polymeric chains. In the present article the docking results were verified under molecular dynamics (MD) modeling. In contrast with limited capabilities of the docking, the MD allowed of using much more large models of the polymeric ligands, considering flexibility of both ligand and target simultaneously. Among the synthesized polymers the dinorbornen anchors containing alternating copolymers of maleic acid were selected as the most representative ligands (possessing the top anti-HIV activity in vitro in correlation with the highest binding energy in the docking). To verify the probability of binding of the polymers with the [HR1]3 in the sites defined via docking, various starting positions of polymer chains were tried. The MD simulations confirmed the main docking-predicted priority for binding sites, and possibilities for axial and belting modes of the ligands-target interactions. Some newly MD-discovered aspects of the ligand's backbone and anchor units dynamic cooperation in binding the viral target clarify mechanisms of the synthetic polymers anti-HIV activity and drug resistance prevention.
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Affiliation(s)
- Vladimir B. Tsvetkov
- Biomodulators and Drugs Research Center, Health RDF, Adm. Ushakova 14-209, 117042 Moscow, Russia
- Topchiev Institute of Petrochemical Synthesis, RAS, Leninsky Pr. 29, 119991 Moscow, Russia
- Institute for Physical-Chemical Medicine, Malaya Pirogovskaya Str. 1a, 119828 Moscow, Russia
| | - Alexander V. Serbin
- Biomodulators and Drugs Research Center, Health RDF, Adm. Ushakova 14-209, 117042 Moscow, Russia
- Topchiev Institute of Petrochemical Synthesis, RAS, Leninsky Pr. 29, 119991 Moscow, Russia
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30
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Alanazi AM, Al-Abdullah ES, El-Brollosy NR, El-Emam AA. Unusual Sulfuric Acid-Induced Thiol Oxidation on Dehydrative Cyclization of Potassium N′-(1-Adamantylcarbonyl)Dithiocarbazate at Room Temperature. PHOSPHORUS SULFUR 2014. [DOI: 10.1080/10426507.2013.829829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Amer M. Alanazi
- a Department of Pharmaceutical Chemistry, College of Pharmacy , King Saud University , Riyadh , 11451 , Saudi Arabia
| | - Ebtehal S. Al-Abdullah
- a Department of Pharmaceutical Chemistry, College of Pharmacy , King Saud University , Riyadh , 11451 , Saudi Arabia
| | - Nasser R. El-Brollosy
- a Department of Pharmaceutical Chemistry, College of Pharmacy , King Saud University , Riyadh , 11451 , Saudi Arabia
| | - Ali A. El-Emam
- a Department of Pharmaceutical Chemistry, College of Pharmacy , King Saud University , Riyadh , 11451 , Saudi Arabia
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31
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El-Emam AA, Al-Tamimi AMS, Al-Omar MA, Alrashood KA, Habib EE. Synthesis and antimicrobial activity of novel 5-(1-adamantyl)-2-aminomethyl-4-substituted-1,2,4-triazoline-3-thiones. Eur J Med Chem 2013; 68:96-102. [PMID: 23973821 DOI: 10.1016/j.ejmech.2013.07.024] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 04/30/2013] [Accepted: 07/15/2013] [Indexed: 12/11/2022]
Abstract
The reaction of 5-(1-adamantyl)-4-substituted-1,2,4-triazoline-3-thione 5a,b and 10a,b with formaldehyde solution and various primary aromatic amines or 1-substituted piperazines yielded the corresponding N-Mannich bases 6a-o, 7a-g and 11a-i. The newly synthesized N-Mannich bases 6a-o, 7a-g and 11a-i were tested for in vitro inhibitory activities against a panel of Gram-positive and Gram-negative bacteria and the yeast-like pathogenic fungus Candida albicans. The compounds 6j, 6l, 6m, 7a, 7b, 7c, 7d, 7f, 11a, 11b, 11c, 11d, 11e, 11f, 11h and 11i displayed moderate to good activity against the tested Gram-positive bacteria, while compounds 7c, 11c, 11d, 11f and 11h showed potent broad spectrum antibacterial activity. None of the newly synthesized compounds were proved to possess marked activity against C. albicans.
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Affiliation(s)
- Ali A El-Emam
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia.
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32
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Wanka L, Iqbal K, Schreiner PR. The lipophilic bullet hits the targets: medicinal chemistry of adamantane derivatives. Chem Rev 2013; 113:3516-604. [PMID: 23432396 PMCID: PMC3650105 DOI: 10.1021/cr100264t] [Citation(s) in RCA: 441] [Impact Index Per Article: 40.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Lukas Wanka
- Institute of Organic Chemistry, Justus-Liebig University Giessen, Heinrich-Buff-Ring 58, 35392 Giessen, Germany; Fax +49(641)9934309
- Department of Neurochemistry, New York State Institute for Basic Research in Developmental Disabilities, 1050 Forest Hill Road, Staten Island, NY 10314-6399, USA
| | - Khalid Iqbal
- Department of Neurochemistry, New York State Institute for Basic Research in Developmental Disabilities, 1050 Forest Hill Road, Staten Island, NY 10314-6399, USA
| | - Peter R. Schreiner
- Institute of Organic Chemistry, Justus-Liebig University Giessen, Heinrich-Buff-Ring 58, 35392 Giessen, Germany; Fax +49(641)9934309
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33
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Gopalan B, Ponpandian T, Kachhadia V, Bharathimohan K, Vignesh R, Sivasudar V, Narayanan S, Mandar B, Praveen R, Saranya N, Rajagopal S, Rajagopal S. Discovery of adamantane based highly potent HDAC inhibitors. Bioorg Med Chem Lett 2013; 23:2532-7. [PMID: 23538115 DOI: 10.1016/j.bmcl.2013.03.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 02/25/2013] [Accepted: 03/01/2013] [Indexed: 01/04/2023]
Abstract
Herein, we report the development of highly potent HDAC inhibitors for the treatment of cancer. A series of adamantane and nor-adamantane based HDAC inhibitors were designed, synthesized and screened for the inhibitory activity of HDAC. A number of compounds exhibited GI50 of 10-100 nM in human HCT116, NCI-H460 and U251 cancer cells, in vitro. Compound 32 displays efficacy in human tumour animal xenograft model.
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Affiliation(s)
- Balasubramanian Gopalan
- Drug Discovery Research Centre, Orchid Chemicals & Pharmaceuticals Ltd, Chennai 600119, India
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34
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A novel view of modelling interactions between synthetic and biological polymers via docking. J Comput Aided Mol Des 2012; 26:1369-88. [PMID: 23239170 DOI: 10.1007/s10822-012-9621-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Accepted: 11/27/2012] [Indexed: 10/27/2022]
Abstract
Multipoint interactions between synthetic and natural polymers provide a promising platform for many topical applications, including therapeutic blockage of virus-specific targets. Docking may become a useful tool for modelling of such interactions. However, the rigid docking cannot be correctly applied to synthetic polymers with flexible chains. The application of flexible docking to these polymers as whole macromolecule ligands is also limited by too many possible conformations. We propose to solve this problem via stepwise flexible docking. Step 1 is docking of separate polymer components: (1) backbone units (BU), multi-repeated along the chain, and (2) side groups (SG) consisting of functionally active elements (SG(F)) and bridges (SG(B)) linking SG(F) with BU. At this step, probable binding sites locations and binding energies for the components are scored. Step 2 is docking of component-integrating models: [BU](m), SG = SG(F)-SG(B), BU-SG, BU-BU(SG)-BU, BU(SG)-[BU](m)-BU(SG), and [BU(var)(SG(var))](m). Every modelling level yields new information, including how the linkage of various components influences on the ligand-target contacts positioning, orientation, and binding energy in step-by-step approximation to polymeric ligand motifs. Step 3 extrapolates the docking results to real-scale macromolecules. This approach has been demonstrated by studying the interactions between hetero-SG modified anionic polymers and the N-heptad repeat region tri-helix core of the human immunodeficiency virus type 1 (HIV-1) envelope glycoprotein gp41, the key mediator of HIV-1 fusion during virus entry. The docking results are compared to real polymeric compounds, acting as HIV-1 entry inhibitors in vitro. This study clarifies the optimal macromolecular design for the viral fusion inhibition and drug resistance prevention.
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Serbin AV, Veselovskii AV, Tsvetkov VB. In vitro and in silico investigation of interferonogenic analogues of nucleic acids, artificially programmed to block the initial stages of HIV infection of cells. APPL BIOCHEM MICRO+ 2012. [DOI: 10.1134/s0003683812090049] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Structural and spectroscopic characterization of a novel potential chemotherapeutic agent 3-(1-adamantyl)-1-{[4-(2-methoxyphenyl)piperazin-1-yl]methyl}-4-methyl-1H-1,2,4-triazole-5(4H)-thione by first principle calculations. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.04.074] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Serbin AV, Karaseva EN, Dunaeva IV, Krut’ko EB, Talyzenkov YA, Filatova MP, Chernikova EV. Controlled free-radical copolymerization of maleic anhydride and divinyl ether in the presence of reversible addition-fragmentation chain-transfer agents. POLYMER SCIENCE SERIES B 2011. [DOI: 10.1134/s1560090411030079] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Serbin A, Karaseva E, Chernikova E, Dunaeva I, Krutko E, Filatova M, Zezin A. Graft and RAFT Reactive Macro Reagents: Bis-[copoly-(divinyl ether-alt
-maleic anhydride)]-trithiocarbonate. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/masy.201051013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Kadi AA, Al-Abdullah ES, Shehata IA, Habib EE, Ibrahim TM, El-Emam AA. Synthesis, antimicrobial and anti-inflammatory activities of novel 5-(1-adamantyl)-1,3,4-thiadiazole derivatives. Eur J Med Chem 2010; 45:5006-11. [PMID: 20801553 DOI: 10.1016/j.ejmech.2010.08.007] [Citation(s) in RCA: 139] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2010] [Revised: 08/04/2010] [Accepted: 08/06/2010] [Indexed: 10/19/2022]
Abstract
New 1-adamanyl-1,3,4-thiadiazole derivatives namely, 5-(1-adamantyl)-1,3,4-thiadiazoline-2-thione 3, 5-(1-adamantyl)-3-(benzyl- or 4-substituted benzyl)-1,3,4-thiadiazoline-2-thione 4a-d, 5-(1-adamantyl)-3-(4-substituted-1-piperazinylmethyl)-1,3,4-thiadiazoline-2-thiones 5a-c, 2-[5-(1-adamantyl)-2-thioxo-1,3,4-thiadiazolin-3-yl]acetic acid 7, (±)-2-[5-(1-adamantyl)-2-thioxo-1,3,4-thiadiazolin-3-yl]propionic acid 9, 3-[5-(1-adamantyl)-2-thioxo-1,3,4-thiadiazolin-3-yl]propionic acid 11, N-[5-(1-adamantyl)-1,3,4-thiadiazol-2-yl]-N'-arylthioureas 15a-c and 5-(1-adamantyl)-1,3,4-thiadiazoline-2-one 16, were synthesized and tested for in vitro activities against a panel of gram-positive and gram-negative bacteria and the yeast-like pathogenic fungus Candida albicans. Compounds 7, 9, 15b and 15c displayed marked activity against the tested gram-positive bacteria, while compound 3 was highly active against the tested gram-negative bacteria. Compounds 4b, 7 and 15c were weakly or moderately active against C. albicans. In addition, the in vivo anti-inflammatory activity of the synthesized compounds was determined using the carrageenan-induced paw oedema method in rats. The propionic acid derivative 9 produced good dose-dependent anti-inflammatory activity.
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Affiliation(s)
- Adnan A Kadi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
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Synthesis, antimicrobial, and anti-inflammatory activities of novel 5-(1-adamantyl)-4-arylideneamino-3-mercapto-1,2,4-triazoles and related derivatives. Molecules 2010; 15:2526-50. [PMID: 20428062 PMCID: PMC6257394 DOI: 10.3390/molecules15042526] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 03/29/2010] [Accepted: 04/02/2010] [Indexed: 12/02/2022] Open
Abstract
The reaction of 5-(1-adamantyl)-4-amino-3-mercapto-1,2,4-triazole (5) with various aromatic aldehydes in ethanol or acetic acid yielded the corresponding 4-arylideneamino derivatives 6a–v. Treatment of the 4-(2,6-difluoro- and dichlorobenzylideneamino) derivatives 6o and 6q with 1-substituted piperazines, and formaldehyde solution in ethanol afforded good yields of the corresponding 5-(1-adamantyl)-4-(2,6-dihalobenzylideneamino-2-(4-substituted-1-piperazinylmethyl)-1,2,4-triazoline-3-thiones 7a–p. 5-(1-Adamantyl)-4-arylideneamino-2-(4-ethoxycarbonyl-1-piperidylmethyl)-1,2,4-triazoline-3-thiones 8a–n, were similarly prepared via the reaction of the corresponding arylideneamino derivative with ethyl 4-piperidinecarboxylate and formaldehyde solution in ethanol. Compounds 6a–v, 7a–p and 8a–n were tested for in vitro activities against a panel of Gram-positive and Gram-negative bacteria and the yeast-like pathogenic fungus Candida albicans. Several derivatives showed good or moderate activities, particularly against the tested Gram-positive bacteria. In addition, the in vivo anti-inflammatory activity of 21 compounds was determined using the carrageenan-induced paw oedema method in rats. Compounds 7d, 7g, 7i, 7j, 7l, 8c, 8e and 8l showed good or moderate dose-dependent activity in this area.
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Omar K, Geronikaki A, Zoumpoulakis P, Camoutsis C, Soković M, Cirić A, Glamoclija J. Novel 4-thiazolidinone derivatives as potential antifungal and antibacterial drugs. Bioorg Med Chem 2010; 18:426-32. [PMID: 19914077 DOI: 10.1016/j.bmc.2009.10.041] [Citation(s) in RCA: 195] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2009] [Accepted: 10/23/2009] [Indexed: 11/16/2022]
Affiliation(s)
- Kouatli Omar
- Department of Pharmaceutical Chemistry of Aristotle, School of Pharmacy, University of Thessaloniki, Thessaloniki, Greece
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Duque MD, Camps P, Profire L, Montaner S, Vázquez S, Sureda FX, Mallol J, López-Querol M, Naesens L, Clercq ED, Radhika Prathalingam S, Kelly JM. Synthesis and pharmacological evaluation of (2-oxaadamant-1-yl)amines. Bioorg Med Chem 2009; 17:3198-206. [PMID: 19251424 PMCID: PMC3217223 DOI: 10.1016/j.bmc.2009.02.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2008] [Revised: 02/05/2009] [Accepted: 02/06/2009] [Indexed: 12/01/2022]
Abstract
The synthesis of several (2-oxaadamant-1-yl)amines is reported. They were evaluated as NMDA receptor antagonists and several of them were more active than amantadine, but none was more potent than memantine. None of the tested compounds displayed antiviral activity. Two of the derivatives showed a significant level of trypanocidal activity.
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Affiliation(s)
- María D. Duque
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institute of Biomedicine (IBUB), Universitat de Barcelona, Av. Diagonal, 643, Barcelona E-08028, Spain
| | - Pelayo Camps
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institute of Biomedicine (IBUB), Universitat de Barcelona, Av. Diagonal, 643, Barcelona E-08028, Spain
| | - Lenuta Profire
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institute of Biomedicine (IBUB), Universitat de Barcelona, Av. Diagonal, 643, Barcelona E-08028, Spain
| | - Silvia Montaner
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institute of Biomedicine (IBUB), Universitat de Barcelona, Av. Diagonal, 643, Barcelona E-08028, Spain
| | - Santiago Vázquez
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institute of Biomedicine (IBUB), Universitat de Barcelona, Av. Diagonal, 643, Barcelona E-08028, Spain
| | - Francesc X. Sureda
- Unitat de Farmacologia, Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, c./St. Llorenç 21, Reus E-43201, Spain
| | - Jordi Mallol
- Unitat de Farmacologia, Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, c./St. Llorenç 21, Reus E-43201, Spain
| | - Marta López-Querol
- Unitat de Farmacologia, Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, c./St. Llorenç 21, Reus E-43201, Spain
| | - Lieve Naesens
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
| | - Erik De Clercq
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
| | - S. Radhika Prathalingam
- London School of Hygiene and Tropical Medicine, Department of Infectious and Tropical Diseases, Keppel Street, London WC1E 7HT, United Kingdom
| | - John M. Kelly
- London School of Hygiene and Tropical Medicine, Department of Infectious and Tropical Diseases, Keppel Street, London WC1E 7HT, United Kingdom
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Camps P, Duque MD, Vázquez S, Naesens L, Clercq ED, Sureda FX, López-Querol M, Camins A, Pallàs M, Prathalingam SR, Kelly JM, Romero V, Ivorra D, Cortés D. Synthesis and pharmacological evaluation of several ring-contracted amantadine analogs. Bioorg Med Chem 2008; 16:9925-36. [PMID: 18954995 PMCID: PMC7125889 DOI: 10.1016/j.bmc.2008.10.028] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2008] [Revised: 10/06/2008] [Accepted: 10/12/2008] [Indexed: 11/24/2022]
Abstract
The synthesis of several (3-noradamantyl)amines, [(3-noradamantyl)methyl]amines, (3,7-dimethyl-1-bisnoradamantyl)amines, and [(3,7-dimethyl-1-bisnoradamantyl)methyl]amines is reported. They were evaluated against a wide range of viruses and one of them inhibited the cytopathicity of influenza A virus at a concentration similar to that of amantadine. Several of the new polycyclic amines show an interesting activity as NMDA receptor antagonists. A rimantadine analogue displayed significant trypanocidal activity. Moreover, to further characterize the pharmacology of these compounds, their effects on dopamine uptake were also assessed.
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Affiliation(s)
- Pelayo Camps
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institute of Biomedicine (IBUB), Universitat de Barcelona, Av. Diagonal, 643, Barcelona E-08028, Spain
| | - María D. Duque
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institute of Biomedicine (IBUB), Universitat de Barcelona, Av. Diagonal, 643, Barcelona E-08028, Spain
| | - Santiago Vázquez
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institute of Biomedicine (IBUB), Universitat de Barcelona, Av. Diagonal, 643, Barcelona E-08028, Spain
| | - Lieve Naesens
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
| | - Erik De Clercq
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
| | - Francesc X. Sureda
- Unitat de Farmacologia, Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, c./St. Llorenç 21, Reus E-43201, Spain
| | - Marta López-Querol
- Unitat de Farmacologia, Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, c./St. Llorenç 21, Reus E-43201, Spain
| | - Antoni Camins
- Unitat de Farmacologia i Farmacognòsia. Facultat de Farmàcia, Institute of Biomedicine (IBUB) and CIBERNED, Universitat de Barcelona, Av. Diagonal, 643, Barcelona E-08028, Spain
| | - Mercè Pallàs
- Unitat de Farmacologia i Farmacognòsia. Facultat de Farmàcia, Institute of Biomedicine (IBUB) and CIBERNED, Universitat de Barcelona, Av. Diagonal, 643, Barcelona E-08028, Spain
| | - S. Radhika Prathalingam
- London School of Hygiene and Tropical Medicine, Department of Infectious and Tropical Diseases, Keppel Street, London WC1E 7HT, UK
| | - John M. Kelly
- London School of Hygiene and Tropical Medicine, Department of Infectious and Tropical Diseases, Keppel Street, London WC1E 7HT, UK
| | - Vanessa Romero
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Valencia, 46100 Burjassot, Valencia, Spain
| | - Dolores Ivorra
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Valencia, 46100 Burjassot, Valencia, Spain
| | - Diego Cortés
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Valencia, 46100 Burjassot, Valencia, Spain
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A. El-Emam A, S. Al-Abdullah E, A. Shehata I, A. Al-Deeb O. Microwave-Assisted Dehydrosulfurization: An Efficient, Solvent-Free Synthesis of 5-(1-Adamantyl)-2-arylamino-1,2,4-triazolo[3,4-b][1,3,4]thiadiazoles. HETEROCYCLES 2007. [DOI: 10.3987/com-06-10906] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kadi AA, El-Brollosy NR, Al-Deeb OA, Habib EE, Ibrahim TM, El-Emam AA. Synthesis, antimicrobial, and anti-inflammatory activities of novel 2-(1-adamantyl)-5-substituted-1,3,4-oxadiazoles and 2-(1-adamantylamino)-5-substituted-1,3,4-thiadiazoles. Eur J Med Chem 2006; 42:235-42. [PMID: 17129641 DOI: 10.1016/j.ejmech.2006.10.003] [Citation(s) in RCA: 203] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2006] [Revised: 10/02/2006] [Accepted: 10/05/2006] [Indexed: 12/01/2022]
Abstract
Reaction of 1-adamantanecarbonyl chloride with certain carboxylic acid hydrazides in pyridine yielded the corresponding N-acyl adamantane-1-carbohydrazide derivatives 3a-j, which were cyclized to the corresponding 2-(1-adamantyl)-5-substituted-1,3,4-oxadiazoles 4a-j via heating with phosphorus oxychloride. Treatment of 1-adamantylisothiocyanate with some carboxylic acid hydrazides in ethanol yielded the corresponding 1-acyl-4-(1-adamantyl)-3-thiosemicarbazides 7a-g, which were cyclized to the corresponding 2-(1-adamantylamino)-5-substituted-1,3,4-thiadiazole derivatives 8a-g. Compounds 4a-j, 7a-g, and 8a-g were tested for in vitro activities against a panel of Gram-positive and Gram-negative bacteria and the yeast-like pathogenic fungus Candida albicans. Several derivatives produced good or moderate activities particularly against the tested Gram-positive bacteria Bacillus subtilis. Meanwhile, compounds 4i and 8g displayed marked antifungal activity against C. albicans. In addition, the in vivo anti-inflammatory activity of the synthesized compounds was determined using the carrageenin-induced paw oedema method in rats. The oxadiazole derivatives 4c, 4g, 4i and 4j produced good dose-dependent anti-inflammatory activity.
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Affiliation(s)
- Adnan A Kadi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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El-Emam AA, Al-Deeb OA, Al-Omar M, Lehmann J. Synthesis, antimicrobial, and anti-HIV-1 activity of certain 5-(1-adamantyl)-2-substituted thio-1,3,4-oxadiazoles and 5-(1-adamantyl)-3-substituted aminomethyl-1,3,4-oxadiazoline-2-thiones. Bioorg Med Chem 2005; 12:5107-13. [PMID: 15351394 DOI: 10.1016/j.bmc.2004.07.033] [Citation(s) in RCA: 265] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2004] [Revised: 07/14/2004] [Accepted: 07/15/2004] [Indexed: 10/26/2022]
Abstract
The reaction of 5-(1-adamantyl)-1,3,4-oxadiazoline-2-thione 2 with iodoethane, 2-dimethylaminoethyl chloride hydrochloride or 2-piperidinoethyl chloride hydrochloride in ethanolic potassium hydroxide yielded the corresponding 5-(1-adamantyl)-2-ethyl or substituted ethylthio-1,3,4-oxadiazoles 3a-c. Interaction of 2 with formaldehyde solution and primary aromatic amines or 1-substituted piperazines, in ethanol at room temperature yielded the corresponding 5-(1-adamantyl)-3-arylaminomethyl-1,3,4-oxadiazoline-2-thiones 4a-m or 5-(1-adamantyl)-3-(4-substituted-1-piperazinylmethyl)-1,3,4-oxadiazoline-2-thiones 5a-h, respectively. All the synthesized compounds were tested for in vitro activities against certain strains of Gram-positive and Gram-negative bacteria and the yeast-like pathogenic fungus Candida albicans. Compounds 2, 5a, and 5e were found as the most active derivatives, particularly against the Gram-positive bacteria. In addition, the antiviral activity of compounds 2, 4a-m, and 5a-h against HIV-1 using the XTT assay was carried out. Compound 2 produced 100%, 43%, and 37% reduction of viral replication at 50, 10, and 2microg/mL concentrations, respectively.
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Affiliation(s)
- Ali A El-Emam
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
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Abstract
Motor complications associated with long-term levodopa application, which follow the so-called honeymoon period of well-tolerated levodopa administration and are looked upon as one clinical marker for progression of Parkinson's disease (PD), initiated a long and controversial debate on the putative neurotoxicity of levodopa. Since dopamine agonists (DA) delay onset of motor complications, they support the neuroprotective treatment strategy in PD. Efficacy and tolerability of DA differs in particular due to their affinity to various dopamine receptor subtypes. The accumulating evidence for levodopa-associated homocysteinaemia, which represents a risk factor for increased incidence of vascular disease in PD, supports the strategy of initial DA application and the use of levodopa as an add-on compound in as low a dose as possible in young PD patients.
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Affiliation(s)
- Thomas Müller
- Department of Neurology, St. Josef Hospital, Ruhr University Bochum, Gudrunstrasse 56, 44791 Bochum, Germany.
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