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El-Remaily MAEAAA, Aboelez MO, Ezelarab HAA, Selim HMRM, Taha EA, Mohamed SK, Soliman AM, Abdallah MS, Fawy MA, Hassany MA, Ahmed N, Alsaggaf AT, El Hamd MA, Kamel MS. Guanidine dicycloamine-based analogs: green chemistry synthesis, biological investigation, and molecular docking studies as promising antibacterial and antiglycation leads. Mol Divers 2024:10.1007/s11030-024-10816-w. [PMID: 38324159 DOI: 10.1007/s11030-024-10816-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 01/21/2024] [Indexed: 02/08/2024]
Abstract
Dicyandiamide (DCD) reacted with amino acids 1a-f to produce biguanides 2 and 4 and guanidine pyrazolones 3, 5, 6, 7, and 8, according to the reaction. DCD exhibited the following reactions: imidodicarbonimidicdiamide 9, diazocan-2-ylguanidine 10, methyl biguanidylthion 11, N-carbamothioylimidodicarbonimidicdiamide 12, 2-guanidinebenzoimidazole 13a, 2-guanidinylbenzoxazole 13b, and 2-guanidinylbenzothiazol 13c. These reactions were triggered by 6-amino caproic acid, thioacetamide, thiourea, o-aminophenol, o-aminothiophenol, and anthranilic acid, respectively. Compound 2 had the least antimicrobial activity, while compound 13c demonstrated the most antibacterial impact against all bacterial strains. Furthermore, in terms of antiglycation efficacy (AGEs), 12, 11, and 7 were the most effective AGE cross-linking inhibitors. Eight and ten, which showed a considerable inhibition on cross-linking AGEs, come next. Compounds 4 and 6 on the other hand have shown the least suppression of AGE production. The most promising antiglycation scaffolds 8, 11, and 12 in the Human serum albumin (HAS) active site were shown to be able to adopt crucial binding interactions with important amino acids based on the results of in silico molecular docking. The most promising antiglycation compounds 8, 11, and 12 were also shown to have better hydrophilicity, acceptable lipophilicity, gastrointestinal tract absorption (GIT), and blood-brain barrier penetration qualities when their physicochemical properties were examined using the egg-boiled method.
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Affiliation(s)
| | - Moustafa O Aboelez
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Sohag University, Sohag, 82524, Egypt.
| | - Hend A A Ezelarab
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt
| | - Heba Mohammed Refat M Selim
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, AlMaarefa University, Diriyah, Riyadh, Saudi Arabia.
- Department of Microbiology and Immunology, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt.
| | - Enas A Taha
- Department of Chemistry, Faculty of Pharmacy, October 6 University, 6 October City, Giza, Egypt
| | - Shaaban K Mohamed
- The Environment and School of Healthcare Science, Manchester Metropolitan University, Manchester, UK
| | - Ahmed M Soliman
- Department of Chemistry, Faculty of Science, Sohag University, Sohag, 82524, Egypt
| | - Mohamed S Abdallah
- The Environment and School of Healthcare Science, Manchester Metropolitan University, Manchester, UK
| | - Mariam A Fawy
- Department of Zoology, Faculty of Science, South Valley University, Qena, 83523, Egypt
| | - Mohamed A Hassany
- Department of Internal Medicine, Faculty of Medicine, Aswan University, Aswan, Egypt
| | - Nessar Ahmed
- The Environment and School of Healthcare Science, Manchester Metropolitan University, Manchester, UK
| | | | - Mohamed A El Hamd
- Department of Pharmaceutical Chemistry, College of Pharmacy, Shaqra University, 11961, Shaqra, Saudi Arabia.
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, South Valley University, Qena, 83523, Egypt.
| | - Moumen S Kamel
- Department of Chemistry, Faculty of Science, Sohag University, Sohag, 82524, Egypt.
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Maurya MR, Kumar N, Avecilla F. Controlled Modification of Triaminoguanidine-Based μ 3 Ligands in Multinuclear [V IVO]/[V VO 2] Complexes and Their Catalytic Potential in the Synthesis of 2-Amino-3-cyano-4 H-pyrans/4 H-chromenes. Inorg Chem 2024; 63:2505-2524. [PMID: 38243891 DOI: 10.1021/acs.inorgchem.3c03704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2024]
Abstract
Reaction of tris(2-hydroxybenzylidene)-triaminoguanidinium chloride (I·HCl) and tris(5-bromo-2-hydroxybenzylidene)-triaminoguanidinium chloride (II·HCl) with [VIVO(acac)2] (1:1 molar ratio) in refluxing methanol resulted in mononuclear [VIVO] complexes, [VIVO(H2L1')(MeOH)] (1) and [VIVO(H2L2')(MeOH)] (2), respectively, where I and II undergo intramolecular triazole ring formation. Aerial oxidation of 1 and 2 in MeOH in the presence of Cs2CO3 gave corresponding cis-[VVO2] complexes Cs[(VO2)(H2L1')] (3) and Cs[(VO2)(H2L2')] (4). However, reaction of an aerially oxidized methanolic solution of [VIVO(acac)2] with I·HCl and II·HCl in the presence of Cs2CO3 (in 1:1:1 molar ratio) gave mononuclear complexes Cs[(VO2)(H3L1)] (5) and Cs[(VO2)(H3L2)] (6) without intramolecular triazole ring formation. Similar anionic trinuclear complexes Cs2[(VO2)3(L1)] (7) and Cs2[(VO2)3(L2)] (8) were isolable upon increasing the amounts of the vanadium precursor and Cs2CO3 to 3 equiv to the reaction applied for 5 and 6. Keeping the reaction mixture of 1 in MeOH under air gave [VVO(H2L1')(OMe)] (9). Structures of 3, 7, 8, and 9 were confirmed by X-ray crystal structure study. A permanent porosity in the crystalline metal-organic framework of 7 confirmed by single-crystal X-ray investigation was further verified by the BET study. Along with a suitable reaction mechanism, these synthesized compounds were explored as effective catalysts for the synthesis of biomolecules 4H-pyran/4H-chromenes.
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Affiliation(s)
- Mannar R Maurya
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Naveen Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Fernando Avecilla
- Universidade da Coruña, Grupo NanoToxGen, Centro Interdisciplinar de Química y Biología (CICA), Departamento de Química, Facultade de Ciencias, Campus de A Coruña, 15071A Coruña, Spain
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Mishra D, Rajkhowa S, Phukan P. Unanticipated switch of reactivity of isonitrile via N≡C bond scission: Cascade formation of symmetrical sulfonyl guanidine. iScience 2023; 26:107258. [PMID: 37520733 PMCID: PMC10384224 DOI: 10.1016/j.isci.2023.107258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/02/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023] Open
Abstract
Unanticipated formation of symmetrical sulfonyl guanidine was observed while treating isonitriles with N,N-dibromoarylsulfonamides in absence of an external amine source. Interesting feature of this work is that one molecule of isonitrile initially reacts with dibromoarylsulfonamide via the C-end to produce the intermediate carbodiimide while the other molecule undergoes C≡N triple bond cleavage to react as amine source with the intermediate. This switch of reactivity from C-center to N-center of the isonitrile generated symmetrical guanidine.
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Affiliation(s)
- Debashish Mishra
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| | - Sagarika Rajkhowa
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| | - Prodeep Phukan
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
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Xu Y, Zeng C, Wen H, Shi Q, Zhao X, Meng Q, Li X, Xiao J. Discovery of AI-2 Quorum Sensing Inhibitors Targeting the LsrK/HPr Protein-Protein Interaction Site by Molecular Dynamics Simulation, Virtual Screening, and Bioassay Evaluation. Pharmaceuticals (Basel) 2023; 16:ph16050737. [PMID: 37242520 DOI: 10.3390/ph16050737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/04/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Quorum sensing (QS) is a cell-to-cell communication mechanism that regulates bacterial pathogenicity, biofilm formation, and antibiotic sensitivity. Among the identified quorum sensing, AI-2 QS exists in both Gram-negative and Gram-positive bacteria and is responsible for interspecies communication. Recent studies have highlighted the connection between the phosphotransferase system (PTS) and AI-2 QS, with this link being associated with protein-protein interaction (PPI) between HPr and LsrK. Here, we first discovered several AI-2 QSIs targeting the LsrK/HPr PPI site through molecular dynamics (MD) simulation, virtual screening, and bioassay evaluation. Of the 62 compounds purchased, eight compounds demonstrated significant inhibition in LsrK-based assays and AI-2 QS interference assays. Surface plasmon resonance (SPR) analysis confirmed that the hit compound 4171-0375 specifically bound to the LsrK-N protein (HPr binding domain, KD = 2.51 × 10-5 M), and therefore the LsrK/HPr PPI site. The structure-activity relationships (SARs) emphasized the importance of hydrophobic interactions with the hydrophobic pocket and hydrogen bonds or salt bridges with key residues of LsrK for LsrK/HPr PPI inhibitors. These new AI-2 QSIs, especially 4171-0375, exhibited novel structures, significant LsrK inhibition, and were suitable for structural modification to search for more effective AI-2 QSIs.
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Affiliation(s)
- Yijie Xu
- National Engineering Research Center for Strategic Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Chunlan Zeng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Huiqi Wen
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China
| | - Qianqian Shi
- National Engineering Research Center for Strategic Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Xu Zhao
- Department of Hepatology, Fifth Medical Center of Chinese PLA General Hospital, Beijing 100039, China
| | - Qingbin Meng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Xingzhou Li
- National Engineering Research Center for Strategic Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Junhai Xiao
- National Engineering Research Center for Strategic Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
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Li J, Zhang X, Han N, Wan P, Zhao F, Xu T, Peng X, Xiong W, Zeng Z. Mechanism of Action of Isopropoxy Benzene Guanidine against Multidrug-Resistant Pathogens. Microbiol Spectr 2023; 11:e0346922. [PMID: 36475769 PMCID: PMC9927234 DOI: 10.1128/spectrum.03469-22] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 11/14/2022] [Indexed: 12/13/2022] Open
Abstract
The increasing emergence of antibiotic resistance is an urgent threat to global health care; thus, there is a need for new therapeutics. Guanidine is the preferred functional group for antimicrobial design and development. Herein, the potential antibacterial activity of the guanidine derivative isopropoxy benzene guanidine (IBG) against multidrug-resistant (MDR) bacteria was discovered. The synergistic antibacterial activity of IBG and colistin was determined by checkerboard assay, time-killing curve, and mouse experiments. The antibacterial mechanism of IBG was verified in fluorescent probe experiments, intracellular oxidative phosphorylation assays, and transcriptome analysis. The results showed that IBG displays efficient antibacterial activity against Gram-positive pathogens and Gram-negative pathogens with permeabilized outer membranes. Further mechanistic studies showed that IBG triggers cytoplasmic membrane damage by binding to phosphatidylglycerol and cardiolipin, leading to the dissipation of proton motive force and accumulation of intracellular ATP. IBG combined with low levels of colistin enhances bacterial outer membrane permeability and increases the accumulation of reactive oxygen species, as further evidenced by transcriptome analysis. Furthermore, the efficacy of IBG with colistin against MDR Escherichia coli in three infection models was demonstrated. Together, these results suggest that IBG is a promising adjuvant of colistin, providing an alternative approach to address the prevalent infections caused by MDR Gram-negative pathogens. IMPORTANCE As antibiotic discovery stagnates, the world is facing a growing menace from the emergence of bacteria that are resistant to almost all available antibiotics. The key to winning this race is to explore distinctive mechanisms of antibiotics. Thus, novel efficient antibacterial agents and alternative strategies are urgently required to fill the void in antibiotic development. Compared with the large amount of money and time required to develop new agents, the antibiotic adjuvant strategy is a promising approach to inhibit bacterial resistance and increase killing of bacteria. In this study, we found that the guanidine derivatives IBG not only displayed efficient antibacterial activities against Gram-positive bacteria but also restored colistin susceptibility of Gram-negative pathogens as an antibiotic adjuvant. More in-depth study showed that IBG is a potential lead to overcome antibiotic resistance, providing new insight into future antibiotic discovery and development.
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Affiliation(s)
- Jie Li
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
| | - Xiufeng Zhang
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
| | - Ning Han
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
| | - Peng Wan
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
| | - Feifei Zhao
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
| | - Tiantian Xu
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
| | - Xianfeng Peng
- Guangzhou Insighter Biotechnology Co., Ltd., Guangzhou, China
| | - Wenguang Xiong
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
| | - Zhenling Zeng
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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7
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Synthesis, structural characterization and catalytic application of zinc and cadmium sulfur complexes with imidazol-2-ylidene-N’-phenylthiourea ligand scaffold. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116055] [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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Nayak DK, Sarkar N, Sampath CM, Sahoo RK, Nembenna S. Organoaluminum Catalyzed Guanylation and Hydroboration Reactions of Carbodiimides. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Deepak Kumar Nayak
- School of Chemical Sciences National Institute of Science Education and Research (NISER), HBNI Bhubaneswar 752 050 India
| | - Nabin Sarkar
- School of Chemical Sciences National Institute of Science Education and Research (NISER), HBNI Bhubaneswar 752 050 India
| | - Chabathula Manoj Sampath
- School of Chemical Sciences National Institute of Science Education and Research (NISER), HBNI Bhubaneswar 752 050 India
| | - Rajata Kumar Sahoo
- School of Chemical Sciences National Institute of Science Education and Research (NISER), HBNI Bhubaneswar 752 050 India
| | - Sharanappa Nembenna
- School of Chemical Sciences National Institute of Science Education and Research (NISER), HBNI Bhubaneswar 752 050 India
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9
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New Guanidinium and Aminoguanidinim Salts of 2-Hydroxypyridine-3-carboxylic acid: Preparation and Spectral, Structural, Thermal, ADMET, Biological, and Molecular Docking Studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Lombe BK, Winand L, Diettrich J, Töbermann M, Hiller W, Kaiser M, Nett M. Discovery, Biosynthetic Origin, and Heterologous Production of Massinidine, an Antiplasmodial Alkaloid. Org Lett 2022; 24:2935-2939. [PMID: 35412834 DOI: 10.1021/acs.orglett.2c00963] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Bacteria of the genus Massilia represent an underexplored source of bioactive natural products. Here, we report the discovery of massinidine (1), a guanidine alkaloid with antiplasmodial activity, from these microbes. The unusual scaffold of massinidine is shown to originate from l-phenylalanine, acetate, and l-arginine. Massinidine biosynthesis genes were identified in the native producer and validated through heterologous expression in Myxococcus xanthus. Bioinformatic analyses indicate that the potential for massinidine biosynthesis is distributed in various proteobacteria.
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Affiliation(s)
- Blaise Kimbadi Lombe
- Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany
| | - Lea Winand
- Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany
| | - Jan Diettrich
- Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany
| | - Melanie Töbermann
- Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany
| | - Wolf Hiller
- Department of Chemistry and Chemical Biology, TU Dortmund University, 44227 Dortmund, Germany
| | - Marcel Kaiser
- Parasite Chemotherapy Unit, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland.,University of Basel, 4001 Basel, Switzerland
| | - Markus Nett
- Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany
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Karmakar H, Anga S, Panda TK, Chandrasekhar V. Aluminium alkyl complexes supported by imino-phosphanamide ligand as precursors for catalytic guanylation reactions of carbodiimides. RSC Adv 2022; 12:4501-4509. [PMID: 35425514 PMCID: PMC8981115 DOI: 10.1039/d2ra00242f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 01/17/2022] [Indexed: 01/13/2023] Open
Abstract
Herein, we report the synthesis, characterisation, and application of three aluminium alkyl complexes, [κ2-{NHIRP(Ph)NDipp}AlMe2] (R = Dipp (2a), Mes (2b); tBu (2c), Dipp = 2,6-diisopropylphenyl, Mes = mesityl, and tBu = tert-butyl), supported by unsymmetrical imino-phosphanamide [NHIRP(Ph)NDipp]- [R = Dipp (1a), Mes (1b), tBu (1c)] ligands as molecular precursors for the catalytic synthesis of guanidines using carbodiimides and primary amines. All the imino-phosphanamide ligands 1a, 1b and 1c were prepared in good yield from the corresponding N-heterocyclic imine (NHI) with phenylchloro-2,6-diisopropylphenylphosphanamine, PhP(Cl)NHDipp. The aluminium alkyl complexes 2a, 2b and 2c were obtained in good yield upon completion of the reaction between trimethyl aluminium and the protic ligands 1a, 1b and 1c in a 1 : 1 molar ratio in toluene via the elimination of methane, respectively. The molecular structures of the protic ligands 1b and 1c and the aluminium complexes 2a, 2b and 2c were established via single-crystal X-ray diffraction analysis. Complexes 2a, 2b and 2c were tested as pre-catalysts for the hydroamination/guanylation reaction of carbodiimides with aryl amines to afford guanidines at ambient temperature. All the aluminium complexes exhibited a high conversion with 1.5 mol% catalyst loading and broad substrate scope with a wide functional group tolerance during the guanylation reaction. We also proposed the most plausible mechanism, involving the formation of catalytically active three-coordinate Al species as the active pre-catalyst.
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Affiliation(s)
- Himadri Karmakar
- Department of Chemistry, Indian Institute of Technology Hyderabad Kandi Sangareddy 502285 Telangana India +91 40 2301 6032 +91 40 2301 6036
| | - Srinivas Anga
- Tata Institute of Fundamental Research Hyderabad Gopanpally 500107 Hyderabad India
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad Kandi Sangareddy 502285 Telangana India +91 40 2301 6032 +91 40 2301 6036
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad Gopanpally 500107 Hyderabad India
- Department of Chemistry, IIT Kanpur Kanpur 208016 India
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Rubiolo JA, Lence E, González-Bello C, Roel M, Gil-Longo J, Campos-Toimil M, Ternon E, Thomas OP, González-Cantalapiedra A, López-Alonso H, Vieytes MR, Botana LM. Crambescin C1 Acts as A Possible Substrate of iNOS and eNOS Increasing Nitric Oxide Production and Inducing In Vivo Hypotensive Effect. Front Pharmacol 2021; 12:694639. [PMID: 34322022 PMCID: PMC8312399 DOI: 10.3389/fphar.2021.694639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/22/2021] [Indexed: 11/13/2022] Open
Abstract
Crambescins are guanidine alkaloids from the sponge Crambe crambe. Crambescin C1 (CC) induces metallothionein genes and nitric oxide (NO) is one of the triggers. We studied and compared the in vitro, in vivo, and in silico effects of some crambescine A and C analogs. HepG2 gene expression was analyzed using microarrays. Vasodilation was studied in rat aortic rings. In vivo hypotensive effect was directly measured in anesthetized rats. The targets of crambescines were studied in silico. CC and homo-crambescine C1 (HCC), but not crambescine A1 (CA), induced metallothioneins transcripts. CC increased NO production in HepG2 cells. In isolated rat aortic rings, CC and HCC induced an endothelium-dependent relaxation related to eNOS activation and an endothelium-independent relaxation related to iNOS activation, hence both compounds increase NO and reduce vascular tone. In silico analysis also points to eNOS and iNOS as targets of Crambescin C1 and source of NO increment. CC effect is mediated through crambescin binding to the active site of eNOS and iNOS. CC docking studies in iNOS and eNOS active site revealed hydrogen bonding of the hydroxylated chain with residues Glu377 and Glu361, involved in the substrate recognition, and explains its higher binding affinity than CA. The later interaction and the extra polar contacts with its pyrimidine moiety, absent in the endogenous substrate, explain its role as exogenous substrate of NOSs and NO production. Our results suggest that CC serve as a basis to develop new useful drugs when bioavailability of NO is perturbed.
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Affiliation(s)
- Juan A Rubiolo
- Departamento de Zoología, Genética y Antropología Física, Universidad de Santiago de Compostela, Lugo, Spain.,Facultad de Ciencias Bioquímicas y Farmacéuticas-Ministerio de Ciencia, Centro Científico y Tecnológico Acuario del Río Paraná, Tecnología e Innovación Productiva de Santa Fe, Universidad Nacional de Rosario, Rosario, Argentina
| | - Emilio Lence
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Concepción González-Bello
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - María Roel
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, Spain
| | - José Gil-Longo
- Departamento de Farmacología, Facultad de Farmacia, Farmacia y Tecnología Farmacéutica, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Manuel Campos-Toimil
- Departamento de Farmacología, Facultad de Farmacia, Farmacia y Tecnología Farmacéutica, Universidad de Santiago de Compostela, Santiago de Compostela, Spain.,Fisiología y Farmacología de las Enfermedades Crónicas (FIFAEC), CIMUS, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Eva Ternon
- CNRS, OCA, IRD, Géoazur, Université Côte d'Azur, Valbonne, France
| | - Olivier P Thomas
- Marine Biodiscovery, School of Chemistry and Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - Antonio González-Cantalapiedra
- Departamento de Anatomía, Producción Animal y Ciencias Clínicas Veterinarias, Hospital Veterinario Universitario Rof Codina, Facultad de Veterinaria, Universidad de Santiago de Compostel, Lugo, Spain
| | - Henar López-Alonso
- Departamento de Anatomía, Producción Animal y Ciencias Clínicas Veterinarias, Hospital Veterinario Universitario Rof Codina, Facultad de Veterinaria, Universidad de Santiago de Compostel, Lugo, Spain
| | - Mercedes R Vieytes
- Departamento de Fisiología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, Spain
| | - Luis M Botana
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, Spain
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13
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Kim SH, Semenya D, Castagnolo D. Antimicrobial drugs bearing guanidine moieties: A review. Eur J Med Chem 2021; 216:113293. [PMID: 33640673 DOI: 10.1016/j.ejmech.2021.113293] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 02/08/2021] [Accepted: 02/09/2021] [Indexed: 12/31/2022]
Abstract
Compounds incorporating guanidine moieties constitute a versatile class of biologically interesting molecules with a wide array of applications. As such, guanidines have been exploited as privileged structural motifs in designing novel drugs for the treatment of various infectious and non-infectious diseases. In designing anti-infective agents, this moiety carries great appeal by virtue of attributes such as hydrogen-bonding capability and protonatability at physiological pH in the context of interaction with biological targets. This review provides an overview of recent advances in hit-to-lead development studies of antimicrobial guanidine-containing compounds with the aim to highlight their structural diversity and the pharmacological relevance of the moiety to drug activity, insofar as possible. In so doing, emphasis is put on chemical and microbiological properties of such compounds in relation to antibacterial, antifungal and antimalarial activities.
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Affiliation(s)
- Seong-Heun Kim
- School of Cancer and Pharmaceutical Sciences, King's College London, 150 Stamford Street, SE1 9NH, London, United Kingdom
| | - Dorothy Semenya
- School of Cancer and Pharmaceutical Sciences, King's College London, 150 Stamford Street, SE1 9NH, London, United Kingdom
| | - Daniele Castagnolo
- School of Cancer and Pharmaceutical Sciences, King's College London, 150 Stamford Street, SE1 9NH, London, United Kingdom.
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14
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Yu L, Wang F, Wang H, Wang S, Wu Y, Gu X. Synthesis, structure and catalytic activity of rare-earth metal amino complexes incorporating imino-functionalized indolyl ligand. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2020.121661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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15
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Berlinck RGS, Bernardi DI, Fill T, Fernandes AAG, Jurberg ID. The chemistry and biology of guanidine secondary metabolites. Nat Prod Rep 2020; 38:586-667. [PMID: 33021301 DOI: 10.1039/d0np00051e] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Covering: 2017-2019Guanidine natural products isolated from microorganisms, marine invertebrates and terrestrial plants, amphibians and spiders, represented by non-ribosomal peptides, guanidine-bearing polyketides, alkaloids, terpenoids and shikimic acid derived, are the subject of this review. The topics include the discovery of new metabolites, total synthesis of natural guanidine compounds, biological activity and mechanism-of-action, biosynthesis and ecological functions.
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Affiliation(s)
- Roberto G S Berlinck
- Instituto de Química de São Carlos, Universidade de São Paulo, CP 780, CEP 13560-970, São Carlos, SP, Brazil.
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16
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Marine alkaloid monanchoxymycalin C: a new specific activator of JNK1/2 kinase with anticancer properties. Sci Rep 2020; 10:13178. [PMID: 32764580 PMCID: PMC7411023 DOI: 10.1038/s41598-020-69751-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 07/16/2020] [Indexed: 12/22/2022] Open
Abstract
Monanchoxymycalin C (MomC) is a new marine pentacyclic guanidine alkaloid, recently isolated from marine sponge Monanchora pulchra by us. Here, anticancer activity and mechanism of action was investigated for the first time using a human prostate cancer (PCa) model. MomC was active in all PCa cell lines at low micromolar concentrations and induced an unusual caspase-independent, non-apoptotic cell death. Kinase activity screening identified activation of mitogen-activated protein kinase (MAPK) c-Jun N-terminal protein kinase (JNK1/2) to be one of the primary molecular mechanism of MomC anticancer activity. Functional assays demonstrated a specific and selective JNK1/2 activation prior to the induction of other cell death related processes. Inhibition of JNK1/2 by pretreatment with the JNK-inhibitor SP600125 antagonized cytotoxic activity of the marine compound. MomC caused an upregulation of cytotoxic ROS. However, in contrast to other ROS-inducing agents, co-treatment with PARP-inhibitor olaparib revealed antagonistic effects indicating an active PARP to be necessary for MomC activity. Interestingly, although no direct regulation of p38 and ERK1/2 were detected, active p38 kinase was required for MomC efficacy, while the inhibition of ERK1/2 increased its cytotoxicity. In conclusion, MomC shows promising activity against PCa, which is exerted via JNK1/2 activation and non-apoptotic cell death.
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17
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Ma X, Xu C, Mao Z, Ji P, Jin C, Xu D, Ding Y. Synthesis, characterization, and thermal properties of novel silicon 1,1,3,3‐tetramethylguanidinate derivatives and use as single‐source chemical vapor deposition precursors. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xiao Ma
- School of Chemical and Material EngineeringJiangnan University Wuxi Jiangsu Province China
| | - Chongying Xu
- School of Chemical and Material EngineeringJiangnan University Wuxi Jiangsu Province China
| | - Zhibiao Mao
- Jiangsu Nata Opto‐Electronic Material Co. Ltd. 7F One Lakepoint, No. 9 Cuiwei Street Suzhou Industrial Park Jiangsu Province China
| | - Peiyu Ji
- School of Physical Science and TechnologySoochow University Suzhou Jiangsu Province China
| | - Chenggang Jin
- School of Physical Science and TechnologySoochow University Suzhou Jiangsu Province China
| | - Dongsheng Xu
- Jiangsu Nata Opto‐Electronic Material Co. Ltd. 7F One Lakepoint, No. 9 Cuiwei Street Suzhou Industrial Park Jiangsu Province China
| | - Yuqiang Ding
- School of Chemical and Material EngineeringJiangnan University Wuxi Jiangsu Province China
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18
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Wang YX, Su WC, Wang Q, Lin YF, Zhou Y, Lin LF, Ren S, Li YT, Chen QX, Shi Y. Antityrosinase and antioxidant activities of guanidine compounds and effect of guanylthiourea on melanogenesis. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.07.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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19
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Isothioureas, Ureas, and Their N-Methyl Amides from 2-Aminobenzothiazole and Chiral Amino Acids. Molecules 2019; 24:molecules24183391. [PMID: 31540462 PMCID: PMC6767222 DOI: 10.3390/molecules24183391] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 09/06/2019] [Accepted: 09/10/2019] [Indexed: 11/18/2022] Open
Abstract
In this investigation, the reaction of 2-dithiomethylcarboimidatebenzothiazole with a series of six chiral amino-acids was studied. The reaction proceeds through the isolable sodium salt of SMe-isothiourea carboxylates as intermediates, whose reaction with methyl iodide in stirring DMF as solvent affords SMe-isothiourea methyl esters. The presence of water in the reaction leads to the corresponding urea carboxylates as isolable intermediates, whose methyl esters were obtained. Finally, the urea N-methyl amide derivatives were isolated when SMe-isothiourea or urea methyl esters were reacted with methylamine in the presence of water. The structures of synthesized compounds were established by 1H and 13C nuclear magnetic resonance and the structures of SMe-isothiourea methyl esters derived from (l)-glycine, (l)-alanine, (l)-phenylglycine, and (l)-leucine, by X-ray diffraction analysis. This methodology allows to functionalize 2-aminobenzothiazole with SMe-isothiourea, urea, and methylamide groups derived from chiral amino acids to get benzothiazole derivatives containing coordination sites and hydrogen bonding groups. Further research on the biological activities of some of these derivatives is ongoing.
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20
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Rong HJ, Yang CF, Chen T, Wang YQ, Ning BK. Synthesis of guanidines via the I2 mediated desulfurization of N,N′-di-Boc-thiourea. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.150970] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Nosratzadegan K, Mahdavi M, Ghani K, Barati K. New Energetic Complex of Copper(II) Dinitramide Based Nitrogen‐rich Ligand Aminoguanidine(CH
6
N
4
): Synthesis, Structural and Energetic Properties. PROPELLANTS EXPLOSIVES PYROTECHNICS 2019. [DOI: 10.1002/prep.201800348] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Keyvan Nosratzadegan
- Department of chemistryMalek-ashtar University of Technology Shahin-shahr P.O. Box 83145/115 Iran
| | - Mohammad Mahdavi
- Department of chemistryMalek-ashtar University of Technology Shahin-shahr P.O. Box 83145/115 Iran
| | - Kamal Ghani
- Department of chemistryMalek-ashtar University of Technology Shahin-shahr P.O. Box 83145/115 Iran
| | - Kazem Barati
- Department of chemistryMalek-ashtar University of Technology Shahin-shahr P.O. Box 83145/115 Iran
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22
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Babij NR, Boothe JR, McKenna GM, Fornwald RM, Wolfe JP. Stereocontrolled synthesis of bicyclic ureas and sulfamides via Pd-catalyzed alkene carboamination reactions. Tetrahedron 2019; 75:4228-4243. [PMID: 31866698 DOI: 10.1016/j.tet.2019.04.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The synthesis of bicyclic ureas and sulfamides via palladium-catalyzed alkene carboamination reactions between aryl/alkenyl halides/triflates and alkenes bearing pendant cyclic sulfamides and ureas is described. The substrates for these reactions are generated in 3-5 steps from commercially available materials, and products are obtained in good yield with up to >20:1 diastereoselectivity. The stereochemical outcome of the sulfamide alkene addition is consistent with a mechanism involving anti-aminopalladation of the alkene, whereas the stereochemical outcome of the urea alkene addition is consistent with a syn-aminopalladation mechanism.
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Affiliation(s)
- Nicholas R Babij
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI, 48109-1055, USA
| | - Jordan R Boothe
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI, 48109-1055, USA
| | - Grace M McKenna
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI, 48109-1055, USA
| | - Ryan M Fornwald
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI, 48109-1055, USA
| | - John P Wolfe
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI, 48109-1055, USA
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23
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Berlinck RGS, Monteiro AF, Bertonha AF, Bernardi DI, Gubiani JR, Slivinski J, Michaliski LF, Tonon LAC, Venancio VA, Freire VF. Approaches for the isolation and identification of hydrophilic, light-sensitive, volatile and minor natural products. Nat Prod Rep 2019; 36:981-1004. [DOI: 10.1039/c9np00009g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Water-soluble, volatile, minor and photosensitive natural products are yet poorly known, and this review discusses the literature reporting the isolation strategies for some of these metabolites.
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Affiliation(s)
| | - Afif F. Monteiro
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Ariane F. Bertonha
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Darlon I. Bernardi
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Juliana R. Gubiani
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Juliano Slivinski
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | | | | | - Victor A. Venancio
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Vitor F. Freire
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
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24
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Rong HJ, Yang CF, Chen T, Xu ZG, Su TD, Wang YQ, Ning BK. Iodine-catalyzed guanylation of amines withN,N′-di-Boc-thiourea. Org Biomol Chem 2019; 17:9280-9283. [DOI: 10.1039/c9ob02014d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Iodine-catalyzed guanylation of amines withN,N′-di-Boc-thiourea is especially useful for both electronically and sterically deactivated primary anilines.
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Affiliation(s)
- Hao-Jie Rong
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
- Department of Chemistry & Materials Science
- Northwest University
| | - Cui-Feng Yang
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
| | - Tao Chen
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
| | - Ze-Gang Xu
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
| | - Tian-Duo Su
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
| | - Yong-Qiang Wang
- Department of Chemistry & Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Bin-Ke Ning
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
- State Key Laboratory of Fluorine & Nitrogen Chemicals
- Xi'an 710065
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25
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Fujita M, Furusho Y. Ultrasound-assisted synthesis of substituted guanidines using 1H-pyrazole-1-carboxamidine and S-methylisothiouronium sulfate under solvent-free conditions. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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26
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Hinds EM, Wolfe JP. A Cross-Metathesis/Aza-Michael Reaction Strategy for the Synthesis of Cyclic and Bicyclic Ureas. J Org Chem 2018; 83:10668-10676. [DOI: 10.1021/acs.joc.8b01492] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Elsa M. Hinds
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - John P. Wolfe
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
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27
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Vardhanapu PK, Bheemireddy V, Bhunia M, Vijaykumar G, Mandal SK. Cyclic (Alkyl)amino Carbene Complex of Aluminum(III) in Catalytic Guanylation Reaction of Carbodiimides. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00358] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Pavan K. Vardhanapu
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Varun Bheemireddy
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Mrinal Bhunia
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Gonela Vijaykumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Swadhin K. Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
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28
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Vušurović J, Schneeberger E, Breuker K. Interactions of Protonated Guanidine and Guanidine Derivatives with Multiply Deprotonated RNA Probed by Electrospray Ionization and Collisionally Activated Dissociation. ChemistryOpen 2017; 6:739-750. [PMID: 29226062 PMCID: PMC5715244 DOI: 10.1002/open.201700143] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 10/06/2017] [Indexed: 11/25/2022] Open
Abstract
Interactions of ribonucleic acid (RNA) with guanidine and guanidine derivatives are important features in RNA-protein and RNA-drug binding. Here we have investigated noncovalently bound complexes of an 8-nucleotide RNA and six different ligands, all of which have a guanidinium moiety, by using electrospray ionization (ESI) and collisionally activated dissociation (CAD) mass spectrometry (MS). The order of complex stability correlated almost linearly with the number of ligand atoms that can potentially be involved in hydrogen-bond or salt-bridge interactions with the RNA, but not with the proton affinity of the ligands. However, ligand dissociation of the complex ions in CAD was generally accompanied by proton transfer from ligand to RNA, which indicated conversion of salt-bridge into hydrogen-bond interactions. The relative stabilities and dissociation pathways of [RNA+m L-n H] n- complexes with different stoichiometries (m=1-5) and net charge (n= 2-5) revealed both specific and unspecific ligand binding to the RNA.
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Affiliation(s)
- Jovana Vušurović
- Institute of Organic Chemistry and Center for Molecular Biosciences Innsbruck (CMBI)University of InnsbruckInnrain 80–826020InnsbruckAustria
| | - Eva‐Maria Schneeberger
- Institute of Organic Chemistry and Center for Molecular Biosciences Innsbruck (CMBI)University of InnsbruckInnrain 80–826020InnsbruckAustria
| | - Kathrin Breuker
- Institute of Organic Chemistry and Center for Molecular Biosciences Innsbruck (CMBI)University of InnsbruckInnrain 80–826020InnsbruckAustria
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29
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Tewari D, Nabavi SF, Nabavi SM, Sureda A, Farooqi AA, Atanasov AG, Vacca RA, Sethi G, Bishayee A. Targeting activator protein 1 signaling pathway by bioactive natural agents: Possible therapeutic strategy for cancer prevention and intervention. Pharmacol Res 2017; 128:366-375. [PMID: 28951297 DOI: 10.1016/j.phrs.2017.09.014] [Citation(s) in RCA: 159] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 09/13/2017] [Accepted: 09/22/2017] [Indexed: 12/29/2022]
Abstract
Activator protein 1 (AP-1) is a key transcription factor in the control of several cellular processes responsible for cell survival proliferation and differentiation. Dysfunctional AP-1 expression and activity are involved in several severe diseases, especially inflammatory disorders and cancer. Therefore, targeting AP-1 has recently emerged as an attractive therapeutic strategy for cancer prevention and therapy. This review summarizes our current understanding of AP-1 biology and function as well as explores and discusses several natural bioactive compounds modulating AP-1-associated signaling pathways for cancer prevention and intervention. Current limitations, challenges, and future directions of research are also critically discussed.
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Affiliation(s)
- Devesh Tewari
- Department of Pharmaceutical Sciences, Faculty of Technology, Bhimtal Campus, Kumaun University, Nainital, 263 136, Uttarakhand, India
| | - Seyed Fazel Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, 1435916471, Iran
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, 1435916471, Iran.
| | - Antoni Sureda
- Research Group on Community Nutrition and Oxidative Stress and CIBEROBN Physiopathology of Obesity and Nutrition, University of Balearic Islands, E-07122, Palma de Mallorca, Balearic Islands, Spain
| | - Ammad Ahmad Farooqi
- Laboratory for Translational Oncology and Personalized Medicine, Rashid Latif Medical College, Lahore, 54000, Pakistan
| | - Atanas G Atanasov
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, 05-552, Jastrzebiec, Poland; Department of Pharmacognosy, University of Vienna, 1090, Vienna, Austria; Department of Vascular Biology and Thrombosis Research, Center for Physiology and Pharmacology, Medical University of Vienna, 1090, Vienna, Austria
| | - Rosa Anna Vacca
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Council of Research, I-70126, Bari, Italy
| | - Gautam Sethi
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam; Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam; Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Singapore.
| | - Anupam Bishayee
- Department of Pharmaceutical Sciences, College of Pharmacy, Larkin University, 18301 N. Miami Avenue, Miami, FL, 33169, USA.
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30
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Wangngae S, Pattarawarapan M, Phakhodee W. Ph3P/I2-Mediated Synthesis of N,N′,N″-Substituted Guanidines and 2-Iminoimidazolin-4-ones from Aryl Isothiocyanates. J Org Chem 2017; 82:10331-10340. [DOI: 10.1021/acs.joc.7b01794] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sirilak Wangngae
- Department
of Chemistry, Faculty of Science, ‡Graduate School, §Center of Excellence in Materials
Science and Technology, and ∥Center of Excellence for Innovation in Chemistry,
Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Mookda Pattarawarapan
- Department
of Chemistry, Faculty of Science, ‡Graduate School, §Center of Excellence in Materials
Science and Technology, and ∥Center of Excellence for Innovation in Chemistry,
Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Wong Phakhodee
- Department
of Chemistry, Faculty of Science, ‡Graduate School, §Center of Excellence in Materials
Science and Technology, and ∥Center of Excellence for Innovation in Chemistry,
Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
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31
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Harinath A, Bano K, Ahmed S, Panda TK. 2-Picolylamino(diphenylphosphinoselenoic)amide supported zinc complexes: Efficient catalyst for insertion of N–H bond into carbodiimides, isocyanates, and isothiocyanate. PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2017.1370590] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Adimulam Harinath
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, India
| | - Kulsum Bano
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, India
| | - Shakil Ahmed
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, India
| | - Tarun K. Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, India
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32
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Salama HE, Saad GR, Sabaa MW. Synthesis, characterization and antimicrobial activity of biguanidinylated chitosan- g -poly[( R )-3-hydroxybutyrate]. Int J Biol Macromol 2017; 101:438-447. [DOI: 10.1016/j.ijbiomac.2017.03.075] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 12/14/2016] [Accepted: 03/14/2017] [Indexed: 11/24/2022]
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33
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Peterson LJ, Luo J, Wolfe JP. Synthesis of Cyclic Guanidines Bearing N-Arylsulfonyl and N-Cyano Protecting Groups via Pd-Catalyzed Alkene Carboamination Reactions. Org Lett 2017; 19:2817-2820. [PMID: 28534637 PMCID: PMC5674782 DOI: 10.1021/acs.orglett.7b00946] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Palladium-catalyzed carboamination reactions of N-allylguanidines bearing cleavable N-cyano or N-arylsulfonyl protecting groups are described. The reactions afford cyclic guanidine products in good yield, and transformations of substrates bearing internal alkenes proceed with high diastereoselectivity. Deuterium labeling studies indicate these transformations proceed via anti-aminopalladation pathways.
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Affiliation(s)
- Luke J. Peterson
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Jingyi Luo
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - John P. Wolfe
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
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34
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Bhattacharjee J, Panda TK. C-H Bond Activation Induced by Group 4 Metal Nitrogen Bond to Form Acetimidamide Metal Complexes. ChemistrySelect 2017. [DOI: 10.1002/slct.201700249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jayeeta Bhattacharjee
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285, Sangareddy, Telangana India
| | - Tarun K. Panda
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285, Sangareddy, Telangana India
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35
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Esteves H, Brito TO, Ribeiro-Viana R, de Fátima Â, Macedo F. Tert
-butyl hydroperoxide-promoted guanylation of amines with benzoylthioureas: Mechanistic insights by HRMS and 1
H NMR. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3698] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Henrique Esteves
- Departamento de Química; Universidade Estadual de Londrina; Rod. Celso Garcia Cid, km. 380, Londrina Paraná 86057-970 Brazil
| | - Tiago Oliveira Brito
- Departamento de Química; Universidade Estadual de Londrina; Rod. Celso Garcia Cid, km. 380, Londrina Paraná 86057-970 Brazil
| | - Renato Ribeiro-Viana
- Departamento de Química; Universidade Estadual de Londrina; Rod. Celso Garcia Cid, km. 380, Londrina Paraná 86057-970 Brazil
| | - Ângelo de Fátima
- Departamento de Química; Universidade Federal de Minas Gerais; Av. Pres. Antônio Carlos, 6627, Belo Horizonte Minas Gerais 31270-901 Brazil
| | - Fernando Macedo
- Departamento de Química; Universidade Estadual de Londrina; Rod. Celso Garcia Cid, km. 380, Londrina Paraná 86057-970 Brazil
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36
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Turočkin A, Raven W, Selig P. Synthesis of Bicyclic and Tricyclic Chiral Guanidinium Salts by an Intramolecular Alkylation Approach. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Aleksej Turočkin
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - William Raven
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Philipp Selig
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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37
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Bhattacharjee J, Das S, Kottalanka RK, Panda TK. Hydroamination of carbodiimides, isocyanates, and isothiocyanates by a bis(phosphinoselenoic amide) supported titanium(iv) complex. Dalton Trans 2016; 45:17824-17832. [PMID: 27774537 DOI: 10.1039/c6dt03063g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The hydroamination of heterocumulenes such as carbodiimides, isocyanates, and isothiocyanates by a bis(phosphinoselenoic amide) supported titanium(iv) complex as a precatalyst is reported here. The titanium(iv) complex [{Ph2P(Se)NCH2CH2NPPh2(Se)}Ti(NMe2)2] (1) was synthesised by the reaction of tetrakis-(dimethylamido)titanium(iv) [Ti(NMe2)4] with [{Ph2P(Se)NHCH2CH2NHPPh2(Se)}] in toluene at ambient temperature. Titanium complex 1 proved to be a competent pre-catalyst for the addition of an amine N-H bond to carbodiimides, isocyanates, and isothiocyanates. The reaction scope was expanded to reactions of aliphatic and aromatic amines with phenylisocyanates and phenylisothiocyanates in toluene solvents proceeding rapidly at room temperature with 5 mol% catalyst loadings to yield the corresponding urea and thio-urea derivatives up to 99%. However, ambient temperature was needed for hydroamination of 1,3-dicyclohexylcarbodiimide. The amine addition reactions with isocyanates showed first order kinetics with respect to catalyst 1 as well as substrates. The most plausible mechanism for the hydroamination reaction was established by isolating 1,1-dimethylphenyl urea as a side product.
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Affiliation(s)
- Jayeeta Bhattacharjee
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, India.
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38
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Salama HE, Saad GR, Sabaa MW. Synthesis, characterization, and biological activity of cross-linked chitosan biguanidine loaded with silver nanoparticles. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 27:1880-1898. [DOI: 10.1080/09205063.2016.1239950] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Hend E. Salama
- Faculty of Science, Department of Chemistry, Cairo University, Giza, Egypt
| | - Gamal R. Saad
- Faculty of Science, Department of Chemistry, Cairo University, Giza, Egypt
| | - Magdy W. Sabaa
- Faculty of Science, Department of Chemistry, Cairo University, Giza, Egypt
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39
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El-Demerdash A, Moriou C, Martin MT, Rodrigues-Stien ADS, Petek S, Demoy-Schneider M, Hall K, Hooper JNA, Debitus C, Al-Mourabit A. Cytotoxic Guanidine Alkaloids from a French Polynesian Monanchora n. sp. Sponge. JOURNAL OF NATURAL PRODUCTS 2016; 79:1929-1937. [PMID: 27419263 DOI: 10.1021/acs.jnatprod.6b00168] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Four bicyclic and three pentacyclic guanidine alkaloids (1-7) were isolated from a French Polynesian Monanchora n. sp. sponge, along with the known alkaloids monalidine A (8), enantiomers 9-11 of known natural product crambescins, and the known crambescidins 12-15. Structures were assigned by spectroscopic data interpretation. The relative and absolute configurations of the alkaloids were established by analysis of (1)H NMR and NOESY spectra and by circular dichroism analysis. The new norcrambescidic acid (7) corresponds to interesting biosynthetic variation within the pentacyclic core. All compounds exhibited antiproliferative and cytotoxic efficacy against KB, HCT116, HL60, MRC5, and B16F10 cancer cells, with IC50 values ranging from 4 nM to 10 μM.
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Affiliation(s)
- Amr El-Demerdash
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay , 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
- Organic Chemistry Division, Chemistry Department, Faculty of Science, Mansoura University , Mansoura 35516, Egypt
| | - Céline Moriou
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay , 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Marie-Thérèse Martin
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay , 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Alice de Souza Rodrigues-Stien
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay , 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Sylvain Petek
- Institut de Recherche pour le Développement (IRD) , UMR-241 EIO, BP529, 98713, Papeete, Tahiti, French Polynesia
| | - Marina Demoy-Schneider
- Université de la Polynésie Française , UMR-241 EIO, BP 6570, 98702 Faa'a Aéroport, Tahiti, French Polynesia
| | - Kathryn Hall
- Queensland Museum , PO Box 3300, South Brisbane BC, Queensland 4101, Australia
| | - John N A Hooper
- Queensland Museum , PO Box 3300, South Brisbane BC, Queensland 4101, Australia
- Eskitis Institute for Drug Discovery, Griffith University , Nathan, Queensland 4111, Australia
| | - Cécile Debitus
- Institut de Recherche pour le Développement (IRD) , UMR-241 EIO, BP529, 98713, Papeete, Tahiti, French Polynesia
| | - Ali Al-Mourabit
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay , 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
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40
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Guo R, Zheng Y, Ma JA. Electrophilic Reaction of 2,2,2-Trifluorodiazoethane with the in Situ Generated N-Heterocyclic Carbenes: Access to N-Aminoguanidines. Org Lett 2016; 18:4170-3. [DOI: 10.1021/acs.orglett.6b01191] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ran Guo
- Department of Chemistry,
Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. of China
| | - Yan Zheng
- Department of Chemistry,
Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. of China
| | - Jun-An Ma
- Department of Chemistry,
Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. of China
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41
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Guanidine Alkaloids from the Marine Sponge Monanchora pulchra Show Cytotoxic Properties and Prevent EGF-Induced Neoplastic Transformation in Vitro. Mar Drugs 2016; 14:md14070133. [PMID: 27428983 PMCID: PMC4962023 DOI: 10.3390/md14070133] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 07/05/2016] [Accepted: 07/08/2016] [Indexed: 12/13/2022] Open
Abstract
Guanidine alkaloids from sponges Monanchora spp. represent diverse bioactive compounds, however, the mechanisms underlying bioactivity are very poorly understood. Here, we report results of studies on cytotoxic action, the ability to inhibit EGF-induced neoplastic transformation, and the effects on MAPK/AP-1 signaling of eight rare guanidine alkaloids, recently isolated from the marine sponge Monanchora pulchra, namely: monanchocidin A (1), monanchocidin B (2), monanchomycalin C (3), ptilomycalin A (4), monanchomycalin B (5), normonanchocidin D (6), urupocidin A (7), and pulchranin A (8). All of the compounds induced cell cycle arrest (apart from 8) and programmed death of cancer cells. Ptilomycalin A-like compounds 1–6 activated JNK1/2 and ERK1/2, following AP-1 activation and caused p53-independent programmed cell death. Compound 7 induced p53-independent cell death without activation of AP-1 or caspase-3/7, and the observed JNK1/2 activation did not contribute to the cytotoxic effect of the compound. Alkaloid 8 induced JNK1/2 (but not ERK1/2) activation leading to p53-independent cell death and strong suppression of AP-1 activity. Alkaloids 1–4, 7, and 8 were able to inhibit the EGF-induced neoplastic transformation of JB6 P+ Cl41 cells. Our results suggest that investigated guanidine marine alkaloids hold potential to eliminate human cancer cells and prevent cancer cell formation and spreading.
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42
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Charvátová H, Císařová I, Štěpnička P. Synthesis of Phosphanylferrocenecarboxamides Bearing Guanidinium Substituents and Their Application in the Palladium-Catalyzed Cross-Coupling of Boronic Acids with Acyl Chlorides. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600461] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Hana Charvátová
- Charles University in Prague; Hlavova 2030 12840 Prague 2 Czech Republic
| | - Ivana Císařová
- Charles University in Prague; Hlavova 2030 12840 Prague 2 Czech Republic
| | - Petr Štěpnička
- Charles University in Prague; Hlavova 2030 12840 Prague 2 Czech Republic
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43
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Sfecci E, Lacour T, Amade P, Mehiri M. Polycyclic Guanidine Alkaloids from Poecilosclerida Marine Sponges. Mar Drugs 2016; 14:E77. [PMID: 27070629 PMCID: PMC4849081 DOI: 10.3390/md14040077] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 03/26/2016] [Accepted: 04/01/2016] [Indexed: 01/09/2023] Open
Abstract
Sessile marine sponges provide an abundance of unique and diversified scaffolds. In particular, marine guanidine alkaloids display a very wide range of biological applications. A large number of cyclic guanidine alkaloids, including crambines, crambescins, crambescidins, batzelladines or netamins have been isolated from Poecilosclerida marine sponges. In this review, we will explore the chemodiversity of tri- and pentacyclic guanidine alkaloids. NMR and MS data tools will also be provided, and an overview of the wide range of bioactivities of crambescidins and batzelladines derivatives will be given.
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Affiliation(s)
- Estelle Sfecci
- Nice Institute of Chemistry, Marine Natural Product Team, University Nice Sophia Antipolis, Parc Valrose, 28 avenue de Valrose, 06108 Nice Cedex 02, France.
| | | | - Philippe Amade
- Nice Institute of Chemistry, Marine Natural Product Team, University Nice Sophia Antipolis, Parc Valrose, 28 avenue de Valrose, 06108 Nice Cedex 02, France.
| | - Mohamed Mehiri
- Nice Institute of Chemistry, Marine Natural Product Team, University Nice Sophia Antipolis, Parc Valrose, 28 avenue de Valrose, 06108 Nice Cedex 02, France.
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44
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Pattarawarapan M, Jaita S, Wangngae S, Phakhodee W. Ultrasound-assisted synthesis of substituted guanidines from thioureas. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.02.050] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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45
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Naktode K, Das S, Bhattacharjee J, Nayek HP, Panda TK. Imidazolin-2-iminato Ligand-Supported Titanium Complexes as Catalysts for the Synthesis of Urea Derivatives. Inorg Chem 2016; 55:1142-53. [PMID: 26789927 DOI: 10.1021/acs.inorgchem.5b02302] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactions of tetrakis(dimethylamido)titanium(IV) [Ti(NMe2)4] with three different imidazolin-2-imines (Im(R)NH; R = tert-butyl (tBu), mesityl (Mes), and 2,6-diisopropylphenyl (Dipp)) afforded the corresponding titanium imidazolin-2-iminato complexes [(Im(R)N)Ti(NMe2)3] (R = tBu, 1a; R = Mes, 1b; R = Dipp, 1c). Treatment of complex 1a with two different carbodiimides [R'N═C═NR'; R' = cyclohexyl (Cy) and isopropyl (iPr)] resulted in the formation of imidazolin-2-iminato titanium mono(guanidinate) complex of the type [(Im(R)N)Ti(R'NC(NMe2)NR') (NMe2)2 (R' = iPr; R = tBu (2a), R = Dipp (2c); R' = Cy, R = tBu (3a)], as yellow solid in 94% yield. However, a similar reaction of 1b and 1c with 2 equiv of phenyl isocyanates at ambient temperature resulted in the formation of corresponding titanium bis(ureate) complexes [(Im(R)N)Ti{κ(2)-OC(NMe2)NPh}2(NMe2)] (R = Mes, 4b and R = Dipp, 4c). Three equivalents of phenyl isothiocyanate reacted with complex 1c to afford respective titanium tris(thioureate) complex [(Im(Dipp)N)Ti{κ(2)-SC(NMe2)NPh}2{κ(1)-SC(NMe2)NPh}] (6c). The molecular structures of 1a-c, 2a, 2c, 3a, 4c, and 6c were established by X-ray diffraction analyses, and, from the solid-state structures of 1a-c, 2a, 2c, 3a, 4c, and 6c, it was confirmed that the imidazolin-2-iminato titanium bond in each case is very short and possesses a multiple-bonding character. The imidazolin-2-iminato titanium complex 1c was utilized as a precatalyst for the addition of amine N-H bond to phenyl isocyanate. High yields of the corresponding urea derivatives were achieved under mild conditions. The mechanistic study of the aforementioned catalytic reaction was performed, and the active catalyst complex 7b was isolated using 2 equiv of iminopyrrole [2-(2,6-iPr2C6H3N═CH)C4H3NH] and the complex 4b. The molecular structure of 7b was thereafter established.
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Affiliation(s)
- Kishor Naktode
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi Sangareddy, 502 285 Telangana, India
| | - Suman Das
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi Sangareddy, 502 285 Telangana, India
| | - Jayeeta Bhattacharjee
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi Sangareddy, 502 285 Telangana, India
| | - Hari Pada Nayek
- Department of Applied Chemistry, Indian School of Mines , Dhanbad, 826004 Jharkhand, India
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi Sangareddy, 502 285 Telangana, India
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46
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Todd ADK, McClennan WL, Masuda JD. Organoaluminum(iii) complexes of the bis-N,N′-(2,6-diisopropylphenyl)imidazolin-2-imine ligand. RSC Adv 2016. [DOI: 10.1039/c6ra15507c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Trimethylaluminum reacts with bis-N,N′-(2,6-diisopropylphenyl)imidazolin-2-imine to form a number of new organoaluminum complexes.
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Affiliation(s)
- Angela D. K. Todd
- The Atlantic Centre for Green Chemistry
- Department of Chemistry
- Saint Mary's University
- Halifax
- Canada B3H 3C3
| | - William L. McClennan
- The Atlantic Centre for Green Chemistry
- Department of Chemistry
- Saint Mary's University
- Halifax
- Canada B3H 3C3
| | - Jason D. Masuda
- The Atlantic Centre for Green Chemistry
- Department of Chemistry
- Saint Mary's University
- Halifax
- Canada B3H 3C3
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47
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Design and synthesis of fused tetrahydroisoquinoline-iminoimidazolines. Eur J Med Chem 2015; 106:15-25. [DOI: 10.1016/j.ejmech.2015.10.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 10/14/2015] [Accepted: 10/15/2015] [Indexed: 01/02/2023]
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48
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Esteves H, de Fátima Â, Castro RDP, Sabino JR, Macedo F, Brito TO. A simple one-pot methodology for the synthesis of substituted benzoylguanidines from benzoylthioureas using tert-butyl hydroperoxide. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.10.088] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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49
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Zheng XM, Meng FW, Geng F, Qi M, Luo C, Yang L, Wang ZT. Plantadeprate A, a Tricyclic Monoterpene Zwitterionic Guanidium, and Related Derivatives from the Seeds of Plantago depressa. JOURNAL OF NATURAL PRODUCTS 2015; 78:2822-2826. [PMID: 26562611 DOI: 10.1021/acs.jnatprod.5b00368] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Two new alkaloids, plantadeprate A (1) and 1'-(4″-hydroxybutyl)plantagoguanidinic acid (2), along with three known compounds, were isolated from the seeds of Plantago depressa. Their structures were elucidated by physical data analyses including NMR, MS, and electronic circular dichroism (ECD) methods. Plantadeprate A (1), a monoterpene zwitterionic guanidium, possesses a unique 5/5/6-tricyclic ring system. Its absolute configuration was determined by X-ray crystallography and computational methods. Compound 1, plumbagine D (3), and plantagoguanidinic acid (4) exhibited potential antihyperglycemic properties attributed to suppression of hepatic gluconeogenesis with inhibitory rates of 8.2%, 18.5%, and 12.5% at 40 μM, respectively.
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Affiliation(s)
| | - Fan-Wang Meng
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
- Department of Chemistry, College of Sciences, Shanghai University , Shanghai 200444, People's Republic of China
| | | | | | - Cheng Luo
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
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50
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Daniel M, Blanchard F, Nocquet-Thibault S, Cariou K, Dodd RH. Halocyclization of Unsaturated Guanidines Mediated by Koser’s Reagent and Lithium Halides. J Org Chem 2015; 80:10624-33. [DOI: 10.1021/acs.joc.5b01750] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Marion Daniel
- Institut de Chimie des Substances
Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Florent Blanchard
- Institut de Chimie des Substances
Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Sophie Nocquet-Thibault
- Institut de Chimie des Substances
Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Kevin Cariou
- Institut de Chimie des Substances
Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Robert H. Dodd
- Institut de Chimie des Substances
Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France
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