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Hyodo K, Miki K, Yauchi T. Synthesis of Ethyl Acetohydroximate and Derivatives from Imidate Hydrochloride. J Org Chem 2022; 87:2959-2965. [DOI: 10.1021/acs.joc.1c02809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kengo Hyodo
- Department of Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Kensho Miki
- Department of Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Tomoya Yauchi
- Department of Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
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2
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Yildirim N. Synthesis of Novel 3-(4-tert-Butylphenyl)-5-Cylopropyl-4H-1,2,4-Triazole Derivatives with Antioxidative and Antimicrobial Activities. LETT DRUG DES DISCOV 2020. [DOI: 10.2174/1570180817999200424073524] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
In this work, new heterocyclic compounds containing 3-(4-tertbutylphenyl)-
5-cyclopropyl-4H-1,2,4-triazole ring were synthesized, starting from iminoester hydrochlorides
and 4-tert-butylbenzhyrazide.
Methods:
Ethyl N-[(4-tert-butylphenyl)carbonyl]cyclopropanecarbohydrazonoate was used to synthesize
4-amino-3-(4-tert-butylphenyl)-5-cyclopropyl-4H-1,2,4-triazole, 3-(4-tert-butylphenyl)-5-
cyclopropyl-4-(arylmethyleneamino)-4H-1,2,4-triazole, 3-(4-tert-butylphenyl)-5-cyclopropyl-4-
(arylmethylamino)-4H-1,2,4-triazole and their phthalonitrile derivatives sequentially.
Results:
Seventeen new 3-(4-tert-butylphenyl)-5-cyclopropyl-4H-1,2,4-triazole derivatives were
synthesized and their antioxidant and antimicrobial activities were determined.
Conclusion:
Imine and amine derivatives were better antioxidants than phthalonitrile derivatives.
Doubly fluorination compounds appeared to result in higher activity. The compounds tested with
five microorganisms showed better activity against B. subtilis with the antimicrobial activity of two
far exceeding that of ampicillin. Imine and amine derivatives were better antimicrobials than phthalonitrile
derivatives.
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Affiliation(s)
- Nuri Yildirim
- Department of Chemistry, Faculty of Science, Karadeniz Technical University, Trabzon, Turkey
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3
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Xiao T, Frey G, Fu Q, Lavine CL, Scott DA, Seaman MS, Chou JJ, Chen B. HIV-1 fusion inhibitors targeting the membrane-proximal external region of Env spikes. Nat Chem Biol 2020; 16:529-537. [PMID: 32152540 PMCID: PMC7723321 DOI: 10.1038/s41589-020-0496-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 02/05/2020] [Indexed: 11/09/2022]
Abstract
Combination antiretroviral therapy has transformed HIV-1 infection, once a fatal illness, into a manageable chronic condition. Drug resistance, severe side effects and treatment noncompliance bring challenges to combination antiretroviral therapy implementation in clinical settings and indicate the need for additional molecular targets. Here, we have identified several small-molecule fusion inhibitors, guided by a neutralizing antibody, against an extensively studied vaccine target-the membrane proximal external region (MPER) of the HIV-1 envelope spike. These compounds specifically inhibit the HIV-1 envelope-mediated membrane fusion by blocking CD4-induced conformational changes. An NMR structure of one compound complexed with a trimeric MPER construct reveals that the compound partially inserts into a hydrophobic pocket formed exclusively by the MPER residues, thereby stabilizing its prefusion conformation. These results suggest that the MPER is a potential therapeutic target for developing fusion inhibitors and that strategies employing an antibody-guided search for novel therapeutics may be applied to other human diseases.
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Affiliation(s)
- Tianshu Xiao
- Division of Molecular Medicine, Boston Children's Hospital, and Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Gary Frey
- Division of Molecular Medicine, Boston Children's Hospital, and Department of Pediatrics, Harvard Medical School, Boston, MA, USA.,ICCB-Longwood Screening Facility, Harvard Medical School, Boston, MA, USA
| | - Qingshan Fu
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Christy L Lavine
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - David A Scott
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Michael S Seaman
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - James J Chou
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Bing Chen
- Division of Molecular Medicine, Boston Children's Hospital, and Department of Pediatrics, Harvard Medical School, Boston, MA, USA.
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4
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Berger O, Ortial S, Wein S, Denoyelle S, Bressolle F, Durand T, Escale R, Vial HJ, Vo-Hoang Y. Evaluation of amidoxime derivatives as prodrug candidates of potent bis-cationic antimalarials. Bioorg Med Chem Lett 2019; 29:2203-2207. [PMID: 31255483 DOI: 10.1016/j.bmcl.2019.06.045] [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] [Received: 05/10/2019] [Revised: 06/18/2019] [Accepted: 06/22/2019] [Indexed: 01/27/2023]
Abstract
Plasmodium falciparum is responsible for most of the cases of malaria and its resistance to established antimalarial drugs is a major issue. Thus, new chemotherapies are needed to fight the emerging multi-drug resistance of P. falciparum malaria, like choline analogues targeting plasmodial phospholipidic metabolism. Here we describe the synthesis of amidoxime derivatives as prodrug candidates of reverse-benzamidines and hybrid compounds able to mimic choline, as well as the design of a new series of asymmetrical bis-cationic compounds. Bioconversion studies were conducted on amidoximes in asymmetrical series and showed that amidoxime prodrug strategy could be applied on C-alkylamidine moieties, like benzamidines and that N-substituents did not alter the bioconversion of amidoximes. The antimalarial activity of the three series of compounds was evaluated in vitro against P. falciparum and in vivo against P. vinckei petteri in mice.
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Affiliation(s)
- Olivier Berger
- Institut des Biomolecules Max Mousseron, UMR 5247, Université de Montpellier, CNRS, ENSCM, Faculté des Sciences Pharmaceutiques et Biologiques, 15 Avenue Charles Flahault, 34093 Montpellier, France
| | - Stéphanie Ortial
- Institut des Biomolecules Max Mousseron, UMR 5247, Université de Montpellier, CNRS, ENSCM, Faculté des Sciences Pharmaceutiques et Biologiques, 15 Avenue Charles Flahault, 34093 Montpellier, France
| | - Sharon Wein
- Dynamique Moléculaire des Interactions Membranaires Normales et Pathologiques, Université de Montpellier, UMR 5235 CNRS, Place Eugène Bataillon, 34095 Montpellier, France
| | - Séverine Denoyelle
- Institut des Biomolecules Max Mousseron, UMR 5247, Université de Montpellier, CNRS, ENSCM, Faculté des Sciences Pharmaceutiques et Biologiques, 15 Avenue Charles Flahault, 34093 Montpellier, France
| | - Françoise Bressolle
- Pharmacocinetique Clinique, EA4215, Faculté des Sciences Pharmaceutiques et Biologiques, 15 Avenue Charles Flahault, 34093 Montpellier, France
| | - Thierry Durand
- Institut des Biomolecules Max Mousseron, UMR 5247, Université de Montpellier, CNRS, ENSCM, Faculté des Sciences Pharmaceutiques et Biologiques, 15 Avenue Charles Flahault, 34093 Montpellier, France
| | - Roger Escale
- Institut des Biomolecules Max Mousseron, UMR 5247, Université de Montpellier, CNRS, ENSCM, Faculté des Sciences Pharmaceutiques et Biologiques, 15 Avenue Charles Flahault, 34093 Montpellier, France
| | - Henri J Vial
- Dynamique Moléculaire des Interactions Membranaires Normales et Pathologiques, Université de Montpellier, UMR 5235 CNRS, Place Eugène Bataillon, 34095 Montpellier, France
| | - Yen Vo-Hoang
- Institut des Biomolecules Max Mousseron, UMR 5247, Université de Montpellier, CNRS, ENSCM, Faculté des Sciences Pharmaceutiques et Biologiques, 15 Avenue Charles Flahault, 34093 Montpellier, France.
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Taj MB, Tirmizi SA, Raheel A, Alelwani W, Hajjar D, Makki AA, Ali U, Darroudi M, Ali HBM. Facile Synthesis of N-Phenyl Benzamidine Derivatives, Their Skin Protecting, and Anti-Aging Activity. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218110270] [Citation(s) in RCA: 3] [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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6
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Facile synthesis of 3,5-diaryl-1,2,4-triazoles via copper-catalyzed domino nucleophilic substitution/oxidative cyclization using amidines or imidates as substrates. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.01.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Degardin M, Wein S, Duckert JF, Maynadier M, Guy A, Durand T, Escale R, Vial H, Vo-Hoang Y. Development of the first oral bioprecursors of bis-alkylguanidine antimalarial drugs. ChemMedChem 2014; 9:300-4. [PMID: 24403182 DOI: 10.1002/cmdc.201300419] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Indexed: 11/07/2022]
Abstract
Plasmodium falciparum is responsible of the most severe form of malaria, and new targets and novel chemotherapeutic scaffolds are needed to fight emerging multidrug-resistant strains of this parasite. Bis-alkylguanidines have been designed to mimic choline, resulting in the inhibition of plasmodial de novo phosphatidylcholine biosynthesis. Despite potent in vitro antiplasmodial and in vivo antimalarial activities, a major drawback of these compounds for further clinical development is their low oral bioavailability. To solve this issue, various modulations were performed on bis-alkylguanidines. The introduction of N-disubstituents on the guanidino motif improved both in vitro and in vivo activities. On the other hand, in vivo pharmacological evaluation in a mouse model showed that the N-hydroxylated derivatives constitute the first oral bioprecursors in bis-alkylguanidine series. This study paves the way for bis-alkylguanidine-based oral antimalarial agents targeting plasmodial phospholipid metabolism.
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Affiliation(s)
- Mélissa Degardin
- UMR 5247 CNRS-UMI-UMII-ENSCM, Institut des Biomolecules Max Mousseron (IBMM), Faculté des Sciences Pharmaceutiques et Biologiques, Université de Montpellier I/II, 15 Avenue Charles Flahault, 34093 Montpellier (France)
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8
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Degardin M, Wein S, Gouni S, Tran Van Ba C, Duckert JF, Durand T, Escale R, Vial H, Vo-Hoang Y. Evaluation of bis-alkylamidoxime O-alkylsulfonates as orally available antimalarials. ChemMedChem 2012; 7:991-1001. [PMID: 22544438 DOI: 10.1002/cmdc.201200112] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 04/03/2012] [Indexed: 11/09/2022]
Abstract
The main threat to controlling malaria is the emerging multidrug resistance of Plasmodium sp. parasites. Bis-alkylamidines were developed as a potential new chemotherapy that targets plasmodial phospholipid metabolism. Unfortunately, these compounds are not orally available. To solve this absorption issue, we investigated a prodrug strategy based on sulfonate derivatives of alkylamidoximes. A total of 25 sulfonates were synthesized as prodrug candidates of one bis-N-alkylamidine and of six N-substituted bis-C-alkylamidines. Their antimalarial activities were evaluated in vitro against P. falciparum and in vivo against P. vinckei in mice to define structure-activity relationships. Small alkyl substituents on the sulfonate group of both C-alkyl- and N-alkylamidines led to the best oral antimalarial activities; alkylsulfonate derivatives are chemically transformed into the corresponding alkylamidines.
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Affiliation(s)
- Mélissa Degardin
- Institut des Biomolecules Max Mousseron, UMR 5247 CNRS-UMI-UMII, Faculté des Sciences Pharmaceutiques et Biologiques, Université de Montpellier I, 15 avenue Charles Flahault, 34093 Montpellier, France
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Tischer M, Pradel G, Ohlsen K, Holzgrabe U. Quaternary ammonium salts and their antimicrobial potential: targets or nonspecific interactions? ChemMedChem 2011; 7:22-31. [PMID: 22113995 DOI: 10.1002/cmdc.201100404] [Citation(s) in RCA: 213] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Revised: 10/28/2011] [Indexed: 11/07/2022]
Abstract
For more than 50 years dequalinium chloride has been used successfully as an antiseptic drug and disinfectant, particularly for clinical purposes. Given the success of dequalinium chloride, several series of mono- and bisquaternary ammonium compounds have been designed and reported to have improved antimicrobial activity. Furthermore, many of them exhibit high activity against mycobacteria and protozoa, especially against plasmodia. This review discusses the structure-activity relationships and the modes of action of the various series of (bis)quaternary ammonium compounds.
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Affiliation(s)
- Maximilian Tischer
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Würzburg, Germany
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