1
|
Jaiswal S, Verma K, Dwivedi J, Sharma S. Tetrazole derivatives in the management of neurological disorders: Recent advances on synthesis and pharmacological aspects. Eur J Med Chem 2024; 271:116388. [PMID: 38614062 DOI: 10.1016/j.ejmech.2024.116388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/16/2024] [Accepted: 04/02/2024] [Indexed: 04/15/2024]
Abstract
Neurological disorders are the leading cause of a large number of mortalities and morbidities. Nitrogen heterocyclic compounds have been pivotal in exhibiting wide array of therapeutic applications. Among them, tetrazole is a ubiquitous class of organic heterocyclic compounds that have attracted much attention because of its unique structural and chemical properties, and a wide range of pharmacological activities comprising anti-convulsant effect, antibiotic, anti-allergic, anti-hypertensive to name a few. Owing to significant chemical and biological properties, the present review aimed at highlighting the recent advances in tetrazole derivatives with special emphasis on their role in the management of neurological diseases. Besides, in-depth structure-activity relationships, molecular docking studies, and associated modes of action of tetrazole derivatives evident in in vitro, in vivo preclinical, and clinical studies have been discussed.
Collapse
Affiliation(s)
- Shivangi Jaiswal
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Kanika Verma
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, India
| | - Jaya Dwivedi
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India.
| | - Swapnil Sharma
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, India.
| |
Collapse
|
2
|
Hernández-Flandes A, Hernández-Ortega S, Ramírez-Apan T, Rocha-Zavaleta L, Silva-Jimenez N, Martínez-Vázquez M. Synthesis of Cycloartan-16β-ol from 16β 24R-Epoxy-Cycloartane and Their Cytotoxicity Evaluation Against Human Cancer Cell Lines. Chem Biodivers 2024; 21:e202301346. [PMID: 38520744 DOI: 10.1002/cbdv.202301346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 03/05/2024] [Accepted: 03/05/2024] [Indexed: 03/25/2024]
Abstract
It was found that Argentatins A and B triterpenoids make up approximately 20-30 % of the waste resin produced from the industrial processes to isolate rubber from P. argentatum. We have developed an efficient protocol for synthesizing cycloartane-16β-ol derivatives by opening the oxepane ring of argentatin B acetate (2) with BF3-OEt2. Although three new cycloartenol derivatives showed high cytotoxicity against PC-3 and HCT-15 cancer cell lines, nevertheless, the best results were obtained for (16β,24R) -(16,24-epoxy-cycloartan-2(1H)-ylidene) acetate (14), compound with intact oxepane ring. These results indicate that the substituents in the argentatin nucleus and a side chain account for the cytotoxic activity. However, according to the selectivity index (SI), 14 did not show selectivity activity to cancer cell lines over the HaCat noncancerous cell line. The compound 3β,16β-Dihydroxy-cycloartan-24-one (5), synthesized by oxepane opening, demonstrated high cytotoxic activity to cancer cell lines and showed a remarkable selectivity to cancer cell lines over the noncancerous ones. These results suggest that 5 could lead to the development of new anticancer compounds.
Collapse
Affiliation(s)
- Atzin Hernández-Flandes
- Departmento de Productos Naturales, Instituto de Química, Universidad Nacional Autónoma de México. C. Exterior, C. Universitaria, Ciudad de México, Coyoacán, 04510 DCMX, México
| | - Simón Hernández-Ortega
- Departmento de Productos Naturales, Instituto de Química, Universidad Nacional Autónoma de México. C. Exterior, C. Universitaria, Ciudad de México, Coyoacán, 04510 DCMX, México
| | - Teresa Ramírez-Apan
- Departmento de Productos Naturales, Instituto de Química, Universidad Nacional Autónoma de México. C. Exterior, C. Universitaria, Ciudad de México, Coyoacán, 04510 DCMX, México
| | - Leticia Rocha-Zavaleta
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas., Universidad Nacional Autónoma de México. C. Exterior, C. Universitaria, Ciudad de México, Coyoacán, 04510 DCMX, México
| | - Noemi Silva-Jimenez
- Departmento de Productos Naturales, Instituto de Química, Universidad Nacional Autónoma de México. C. Exterior, C. Universitaria, Ciudad de México, Coyoacán, 04510 DCMX, México
| | - Mariano Martínez-Vázquez
- Departmento de Productos Naturales, Instituto de Química, Universidad Nacional Autónoma de México. C. Exterior, C. Universitaria, Ciudad de México, Coyoacán, 04510 DCMX, México
| |
Collapse
|
3
|
Ni T, Hao Y, Ding Z, Chi X, Xie F, Wang R, Bao J, Yan L, Li L, Wang T, Zhang D, Jiang Y. Discovery of a Novel Potent Tetrazole Antifungal Candidate with High Selectivity and Broad Spectrum. J Med Chem 2024; 67:6238-6252. [PMID: 38598688 DOI: 10.1021/acs.jmedchem.3c02188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Thirty-one novel albaconazole derivatives were designed and synthesized based on our previous work. All compounds exhibited potent in vitro antifungal activities against seven pathogenic fungi. Among them, tetrazole compound D2 was the most potent antifungal with MIC values of <0.008, <0.008, and 2 μg/mL against Candida albicans, Cryptococcus neoformans, and Aspergillus fumigatus, respectively, the three most common and critical priority pathogenic fungi. In addition, compound D2 also exhibited potent activity against fluconazole-resistant C. auris isolates. Notably, compound D2 showed a lower inhibitory activity in vitro against human CYP450 enzymes as well as a lower inhibitory effect on the hERG K+ channel, indicating a low risk of drug-drug interactions and QT prolongation. Moreover, with improved pharmacokinetic profiles, compound D2 showed better in vivo efficacy than albaconazole at reducing fungal burden and extending the survival of C. albicans-infected mice. Taken together, compound D2 will be further investigated as a promising candidate.
Collapse
Affiliation(s)
- Tingjunhong Ni
- Department of Pharmacy, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, No. 1239 Siping Road ,Shanghai 200092, China
| | - Yumeng Hao
- School of Pharmacy, Naval Medical University, No. 325 Guohe Road, Shanghai 200433, China
| | - Zichao Ding
- School of Pharmacy, Naval Medical University, No. 325 Guohe Road, Shanghai 200433, China
- Department of Pharmacy, 927th Hospital of Joint Logistics Support Force, 3 Yushui Road ,Puer 665000, China
| | - Xiaochen Chi
- School of Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Fei Xie
- School of Pharmacy, Naval Medical University, No. 325 Guohe Road, Shanghai 200433, China
| | - Ruina Wang
- School of Pharmacy, Naval Medical University, No. 325 Guohe Road, Shanghai 200433, China
| | - Junhe Bao
- School of Pharmacy, Naval Medical University, No. 325 Guohe Road, Shanghai 200433, China
| | - Lan Yan
- School of Pharmacy, Naval Medical University, No. 325 Guohe Road, Shanghai 200433, China
| | - Liping Li
- Department of Pharmacy, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, No. 1239 Siping Road ,Shanghai 200092, China
| | - Ting Wang
- School of Pharmacy, Naval Medical University, No. 325 Guohe Road, Shanghai 200433, China
| | - Dazhi Zhang
- Department of Pharmacy, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, No. 1239 Siping Road ,Shanghai 200092, China
- School of Pharmacy, Naval Medical University, No. 325 Guohe Road, Shanghai 200433, China
| | - Yuanying Jiang
- Department of Pharmacy, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, No. 1239 Siping Road ,Shanghai 200092, China
| |
Collapse
|
4
|
Aguilar-Morales CM, Araujo-Huitrado JG, López-Hernández Y, Contreras-Celedón C, Islas-Jácome A, Granados-López AJ, Solorio-Alvarado CR, López JA, Chacón-García L, Cortés-García CJ. A One-Pot Six-Component Reaction for the Synthesis of 1,5-Disubstituted Tetrazol-1,2,3-Triazole Hybrids and Their Cytotoxic Activity against the MCF-7 Cell Line. Molecules 2021; 26:6104. [PMID: 34684686 PMCID: PMC8541533 DOI: 10.3390/molecules26206104] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/06/2021] [Accepted: 10/06/2021] [Indexed: 11/24/2022] Open
Abstract
A high-order multicomponent reaction involving a six-component reaction to obtain the novel linked 1,5-disubstituted tetrazole-1,2,3-triazole hybrids in low to moderate yield is described. This one-pot reaction is carried out under a cascade process consisting of three sequential reactions: Ugi-azide, bimolecular nucleophilic substitution (SN2), and copper-catalyzed alkyne-azide reaction (CuAAC), with high atom and step-economy due the formation of six new bonds (one C-C, four C-N, and one N-N). Thus, the protocol developed offers operational simplicity, mild reaction conditions, and structural diversity. Finally, to evaluate the antitumoral potential of the synthetized molecules, a proliferation study was performed in the breast cancer (BC) derived cell line MCF-7. The hybrid compounds showed several degrees of cell proliferation inhibition with a remarkable effect in those compounds with cyclohexane and halogens in their structures. These compounds represent potential drug candidates for breast cancer treatment. However, additionally assays are needed to elucidate their complete effect over the cellular hallmarks of cancer.
Collapse
Affiliation(s)
- Cesia M. Aguilar-Morales
- Laboratorio de Diseño Molecular, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Morelia C.P. 58033, Mexico; (C.M.A.-M.); (C.C.-C.)
| | - Jorge Gustavo Araujo-Huitrado
- Laboratorio de microRNAs y Cáncer, Universidad Autónoma de Zacatecas, Av. Preparatoria S/N, Agronómica, Campus II, Zacatecas C.P. 98066, Mexico; (J.G.A.-H.); (A.J.G.-L.); (J.A.L.)
| | - Yamilé López-Hernández
- Laboratorio de Metabolómica y Proteómica, CONACyT-Universidad Autónoma de Zacatecas, Av. Preparatoria S/N, Agronómica, Campus II, Zacatecas C.P. 98066, Mexico;
| | - Claudia Contreras-Celedón
- Laboratorio de Diseño Molecular, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Morelia C.P. 58033, Mexico; (C.M.A.-M.); (C.C.-C.)
| | - Alejandro Islas-Jácome
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina, Ciudad de Mexico C.P. 09340, Mexico;
| | - Angelica Judith Granados-López
- Laboratorio de microRNAs y Cáncer, Universidad Autónoma de Zacatecas, Av. Preparatoria S/N, Agronómica, Campus II, Zacatecas C.P. 98066, Mexico; (J.G.A.-H.); (A.J.G.-L.); (J.A.L.)
| | - Cesar R. Solorio-Alvarado
- Departamento de Química, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Campus Guanajuato, Noria Alta S/N, Guanajuato C.P. 36050, Mexico;
| | - Jesús Adrián López
- Laboratorio de microRNAs y Cáncer, Universidad Autónoma de Zacatecas, Av. Preparatoria S/N, Agronómica, Campus II, Zacatecas C.P. 98066, Mexico; (J.G.A.-H.); (A.J.G.-L.); (J.A.L.)
| | - Luis Chacón-García
- Laboratorio de Diseño Molecular, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Morelia C.P. 58033, Mexico; (C.M.A.-M.); (C.C.-C.)
| | - Carlos J. Cortés-García
- Laboratorio de Diseño Molecular, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Morelia C.P. 58033, Mexico; (C.M.A.-M.); (C.C.-C.)
| |
Collapse
|
5
|
Wang C, Zhang H, Zhang T, Zou X, Wang H, Rosenberger J, Vannam R, Trout WS, Grimm JB, Lavis LD, Thorpe C, Jia X, Li Z, Fox JM. Enabling In Vivo Photocatalytic Activation of Rapid Bioorthogonal Chemistry by Repurposing Silicon-Rhodamine Fluorophores as Cytocompatible Far-Red Photocatalysts. J Am Chem Soc 2021; 143:10793-10803. [PMID: 34250803 PMCID: PMC8765119 DOI: 10.1021/jacs.1c05547] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Chromophores that absorb in the tissue-penetrant far-red/near-infrared window have long served as photocatalysts to generate singlet oxygen for photodynamic therapy. However, the cytotoxicity and side reactions associated with singlet oxygen sensitization have posed a problem for using long-wavelength photocatalysis to initiate other types of chemical reactions in biological environments. Herein, silicon-Rhodamine compounds (SiRs) are described as photocatalysts for inducing rapid bioorthogonal chemistry using 660 nm light through the oxidation of a dihydrotetrazine to a tetrazine in the presence of trans-cyclooctene dienophiles. SiRs have been commonly used as fluorophores for bioimaging but have not been applied to catalyze chemical reactions. A series of SiR derivatives were evaluated, and the Janelia Fluor-SiR dyes were found to be especially effective in catalyzing photooxidation (typically 3%). A dihydrotetrazine/tetrazine pair is described that displays high stability in both oxidation states. A protein that was site-selectively modified by trans-cyclooctene was quantitatively conjugated upon exposure to 660 nm light and a dihydrotetrazine. By contrast, a previously described methylene blue catalyst was found to rapidly degrade the protein. SiR-red light photocatalysis was used to cross-link hyaluronic acid derivatives functionalized by dihydrotetrazine and trans-cyclooctenes, enabling 3D culture of human prostate cancer cells. Photoinducible hydrogel formation could also be carried out in live mice through subcutaneous injection of a Cy7-labeled hydrogel precursor solution, followed by brief irradiation to produce a stable hydrogel. This cytocompatible method for using red light photocatalysis to activate bioorthogonal chemistry is anticipated to find broad applications where spatiotemporal control is needed in biological environments.
Collapse
Affiliation(s)
- Chuanqi Wang
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - He Zhang
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, USA
| | - Tao Zhang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Xiaoyu Zou
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, USA
| | - Hui Wang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Julia Rosenberger
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Raghu Vannam
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - William S. Trout
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Jonathan B. Grimm
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn Virginia, 20147, USA
| | - Luke D. Lavis
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn Virginia, 20147, USA
| | - Colin Thorpe
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Xinqiao Jia
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, USA
- Delaware Biotechnology Institute, Newark, Delaware 19711, USA
| | - Zibo Li
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Joseph M. Fox
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, USA
| |
Collapse
|
6
|
Xie Y, Fang Y, Huang Z, Tallon AM, Am Ende CW, Fox JM. Divergent Synthesis of Monosubstituted and Unsymmetrical 3,6-Disubstituted Tetrazines from Carboxylic Ester Precursors. Angew Chem Int Ed Engl 2020; 59:16967-16973. [PMID: 32559350 PMCID: PMC7733736 DOI: 10.1002/anie.202005569] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/02/2020] [Indexed: 11/06/2022]
Abstract
Since tetrazines are important tools to the field of bioorthogonal chemistry, there is a need for new approaches to synthesize unsymmetrical and 3-monosubstituted tetrazines. Described here is a general, one-pot method for converting (3-methyloxetan-3-yl)methyl carboxylic esters into 3-thiomethyltetrazines. These versatile intermediates were applied to the synthesis of unsymmetrical tetrazines through Pd-catalyzed cross-coupling and in the first catalytic thioether reduction to access monosubstituted tetrazines. This method enables the development of new tetrazine compounds possessing a favorable combination of kinetics, small size, and hydrophilicity. It was applied to a broad range of aliphatic and aromatic ester precursors and to the synthesis of heterocycles including BODIPY fluorophores and biotin. In addition, a series of tetrazine probes for monoacylglycerol lipase (MAGL) were synthesized and the most reactive one was applied to the labeling of endogenous MAGL in live cells.
Collapse
Affiliation(s)
- Yixin Xie
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Yinzhi Fang
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Zhen Huang
- Pfizer Worldwide Research and Development, 1 Portland Street, Cambridge, MA, 02139, USA
| | - Amanda M Tallon
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Christopher W Am Ende
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, CT, 06340, USA
| | - Joseph M Fox
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| |
Collapse
|
7
|
Mergemeier K, Galster F, Lehr M. HPLC-UV assay for the evaluation of inhibitors of plasma amine oxidase using crude bovine plasma. J Enzyme Inhib Med Chem 2019; 34:144-149. [PMID: 30427224 PMCID: PMC6237158 DOI: 10.1080/14756366.2018.1524890] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/04/2018] [Accepted: 09/13/2018] [Indexed: 11/21/2022] Open
Abstract
Recently, we have described a method for evaluation of plasma amine oxidase (PAO) inhibitors, which monitors the formation of 6-(5-phenyl-2H-tetrazol-2-yl)hexanal from the corresponding amine substrate by HPLC with UV-detection using purified bovine PAO. We now investigated, whether crude bovine plasma can be used as enzyme source in this assay instead of the purified enzyme. With the aid of specific inhibitors, it was ensured that there was no detectable activity of other important amine oxidases in the plasma, namely monoamine oxidase (MAO) A and B and diamine oxidase (DAO). For a series of ω-(5-phenyl-2H-tetrazol-2-yl)alkan-1-amine substrates similar conversion rates were measured for both the purified PAO and crude plasma. The inhibition values determined for the PAO inhibitor 2-(4-phenylphenyl)acetohydrazide (16) under different conditions also corresponded. Additionally, inhibition data of the known PAO inhibitor 2-amino-N-(3-phenylbenzyl)acetamide (17) and a newly synthesised meta-substituted derivative of 16 were determined, which together reflect the two-step inhibition mechanism of these covalent inhibitors.
Collapse
Affiliation(s)
- Kira Mergemeier
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Münster, Germany
| | - Florian Galster
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Münster, Germany
| | - Matthias Lehr
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Münster, Germany
| |
Collapse
|
8
|
Matsuzaki Y, Yoshimoto Y, Arimori S, Kiguchi S, Harada T, Iwahashi F. Discovery of metyltetraprole: Identification of tetrazolinone pharmacophore to overcome QoI resistance. Bioorg Med Chem 2019; 28:115211. [PMID: 31753801 DOI: 10.1016/j.bmc.2019.115211] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 11/18/2022]
Abstract
Quinone outside inhibitors (QoIs) are one of the major agricultural fungicide groups used worldwide. However, the development of resistance by different pathogenic species associated with specific mutation at the target gene site is becoming a critical issue for the sustainable use of QoIs. The authors aimed to design a novel QoI molecule to overcome the aforementioned issue. A rational approach to avoid steric hindrance between the QoI molecule and the mutated target site was successfully employed. The resulting compound, metyltetraprole, is characterized by 3-substituted central ring with a tetrazolinone moiety, the key structure to retain potent activity against QoI-resistant mutants. Metyltetraprole is a promising new fungicide under commercial development, and its development in this study has paved the way to overcoming resistance to QoI fungicides.
Collapse
Affiliation(s)
- Yuichi Matsuzaki
- Health and Crop Sciences Research Laboratory, Sumitomo Chemical Co., Ltd., Takarazuka, Japan.
| | - Yuya Yoshimoto
- Health and Crop Sciences Research Laboratory, Sumitomo Chemical Co., Ltd., Takarazuka, Japan
| | - Sadayuki Arimori
- Health and Crop Sciences Research Laboratory, Sumitomo Chemical Co., Ltd., Takarazuka, Japan
| | - So Kiguchi
- Health and Crop Sciences Research Laboratory, Sumitomo Chemical Co., Ltd., Takarazuka, Japan
| | - Toshiyuki Harada
- Health and Crop Sciences Research Laboratory, Sumitomo Chemical Co., Ltd., Takarazuka, Japan
| | - Fukumatsu Iwahashi
- Health and Crop Sciences Research Laboratory, Sumitomo Chemical Co., Ltd., Takarazuka, Japan
| |
Collapse
|
9
|
Sharma S, Kozek KA, Abney KK, Kumar S, Gautam N, Alnouti Y, David Weaver C, Hopkins CR. Discovery, synthesis and characterization of a series of (1-alkyl-3-methyl-1H-pyrazol-5-yl)-2-(5-aryl-2H-tetrazol-2-yl)acetamides as novel GIRK1/2 potassium channel activators. Bioorg Med Chem Lett 2019; 29:791-796. [PMID: 30718161 PMCID: PMC6398930 DOI: 10.1016/j.bmcl.2019.01.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/21/2019] [Accepted: 01/22/2019] [Indexed: 12/22/2022]
Abstract
The present study describes the discovery and characterization of a series of 5-aryl-2H-tetrazol-3-ylacetamides as G protein-gated inwardly-rectifying potassium (GIRK) channels activators. Working from an initial hit discovered during a high-throughput screening campaign, we identified a tetrazole scaffold that shifts away from the previously reported urea-based scaffolds while remaining effective GIRK1/2 channel activators. In addition, we evaluated the compounds in Tier 1 DMPK assays and have identified a (3-methyl-1H-pyrazol-1-yl)tetrahydrothiophene-1,1-dioxide head group that imparts interesting and unexpected microsomal stability compared to previously-reported pyrazole head groups.
Collapse
Affiliation(s)
- Swagat Sharma
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE 68198-6125, USA
| | - Krystian A Kozek
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37232, USA
| | - Kristopher K Abney
- School of Graduate Studies and Research, Meharry Medical College, Nashville, TN 37208, USA
| | - Sushil Kumar
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE 68198-6125, USA
| | - Nagsen Gautam
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE 68198-6125, USA
| | - Yazen Alnouti
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE 68198-6125, USA
| | - C David Weaver
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37232, USA
| | - Corey R Hopkins
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE 68198-6125, USA.
| |
Collapse
|
10
|
Patil P, Mishra B, Sheombarsing G, Kurpiewska K, Kalinowska-Tłuścik J, Dömling A. Library-to-Library Synthesis of Highly Substituted α-Aminomethyl Tetrazoles via Ugi Reaction. ACS Comb Sci 2018; 20:70-74. [PMID: 29215263 PMCID: PMC5813278 DOI: 10.1021/acscombsci.7b00137] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/21/2017] [Indexed: 12/26/2022]
Abstract
α-Aminomethyl tetrazoles, recently made accessible by an Ugi multicomponent reaction (MCR), were shown to be excellent starting materials for a further Ugi MCR, yielding substituted N-methyl-2-(((1-methyl-1H-tetrazol-5-yl)methyl)amino)acetamides having four points of diversity in a library-to-library approach. The scope and limitations of the two-step sequence was explored by conducting more than 50 reactions. Irrespective of electron-rich and electron-deficient oxo-components and the nature of the isocyanide component, the reactions give excellent yields. Sterically less hindered α-aminomethyl tetrazoles give better yields of in further Ugi MCR. The target scaffold has four points of diversity and is finding applications to fill screening decks for high-throughput screening (HTS) in the European Lead Factory and in structure-based drug design.
Collapse
Affiliation(s)
- Pravin Patil
- University
of Groningen, Department of Drug Design, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Bhupendra Mishra
- University
of Groningen, Department of Drug Design, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Gitanjali Sheombarsing
- University
of Groningen, Department of Drug Design, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Katarzyna Kurpiewska
- Jagiellonian
University, Faculty of Chemistry, Department
of Crystal Chemistry and Crystal Physics, Biocrystallography Group, Ingardena 3, 30-060 Kraków, Poland
| | - Justyna Kalinowska-Tłuścik
- Jagiellonian
University, Faculty of Chemistry, Department
of Crystal Chemistry and Crystal Physics, Biocrystallography Group, Ingardena 3, 30-060 Kraków, Poland
| | - Alexander Dömling
- University
of Groningen, Department of Drug Design, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| |
Collapse
|
11
|
Gujarati NA, Zeng L, Gupta P, Chen ZS, Korlipara VL. Design, synthesis and biological evaluation of benzamide and phenyltetrazole derivatives with amide and urea linkers as BCRP inhibitors. Bioorg Med Chem Lett 2017; 27:4698-4704. [PMID: 28916341 DOI: 10.1016/j.bmcl.2017.09.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 09/01/2017] [Accepted: 09/02/2017] [Indexed: 12/18/2022]
Abstract
Breast cancer resistant protein (BCRP/ABCG2), a 72kDa plasma membrane transporter protein is a member of ABC transporter superfamily. Increased expression of BCRP causes increased efflux and therefore, reduced intracellular accumulation of many unrelated chemotherapeutic agents leading to multidrug resistance (MDR). A series of 31 benzamide and phenyltetrazole derivatives with amide and urea linkers has been synthesized to serve as potential BCRP inhibitors in order to overcome BCRP-mediated MDR. The target derivatives were tested for their cytotoxicity and reversal effects in human non-small cell lung cancer cell line H460 and mitoxantrone resistant cell line H460/MX20 using the MTT assay. In the benzamide series, compounds 6 and 7 exhibited a fold resistance of 1.51 and 1.62, respectively at 10µM concentration which is similar to that of FTC, a known BCRP inhibitor. Compounds 27 and 31 were the most potent analogues in the phenyltetrazole series with amide linker with a fold resistance of 1.39 and 1.32, respectively at 10µM concentration. For the phenyltetrazole series with urea linker, 38 exhibited a fold resistance of 1.51 which is similar than that of FTC and is the most potent compound in this series. The target compounds did not exhibit reversal effect in P-gp overexpressing resistant cell line SW620/Ad300 suggesting that they are selective BCRP inhibitors.
Collapse
Affiliation(s)
- Nehaben A Gujarati
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, United States
| | - Leli Zeng
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, United States
| | - Pranav Gupta
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, United States
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, United States
| | - Vijaya L Korlipara
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, United States.
| |
Collapse
|
12
|
Rüger N, Fassauer GM, Bock C, Emmrich T, Bodtke A, Link A. Substituted tetrazoles as multipurpose screening compounds. Mol Divers 2016; 21:9-27. [PMID: 28028725 DOI: 10.1007/s11030-016-9711-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 12/03/2016] [Indexed: 11/25/2022]
Abstract
Tetrazoles are small functional heterocycles that are suited to serve simultaneously as aromatic platform for diversity and as functional interaction motif. Furthermore, the tetrazole ring and its deprotonated tetrazolate counterpart are metal ion complexing ligands that possess a rich variety of binding and bridging modes. We recently demonstrated that fragments containing the tetrazole moiety and a metal chelating hydrazide group are well suited to discover selective screening hits with high ligand efficiency for a given protein target. Here, we report the synthesis and characterization of new polydentate tetrazole-containing screening compounds and their synthetic precursors as well as their deposition in a multipurpose screening library in the frame of the EU-OPENSCREEN network. The pure and well-characterized screening compounds could be useful to aid drug discovery programs for multiple or hitherto undruggable targets by enclosure of under-represented tetrazole derivatives.
Collapse
Affiliation(s)
- Nicole Rüger
- Institute of Pharmacy, Ernst-Moritz-Arndt-University Greifswald, Friedrich-Ludwig-Jahn-Str. 17, 17487, Greifswald, Germany
| | - Georg Michael Fassauer
- Institute of Pharmacy, Ernst-Moritz-Arndt-University Greifswald, Friedrich-Ludwig-Jahn-Str. 17, 17487, Greifswald, Germany
| | - Christian Bock
- Institute of Pharmacy, Ernst-Moritz-Arndt-University Greifswald, Friedrich-Ludwig-Jahn-Str. 17, 17487, Greifswald, Germany
| | - Thomas Emmrich
- Institute of Pharmacy, Ernst-Moritz-Arndt-University Greifswald, Friedrich-Ludwig-Jahn-Str. 17, 17487, Greifswald, Germany
| | - Anja Bodtke
- Institute of Pharmacy, Ernst-Moritz-Arndt-University Greifswald, Friedrich-Ludwig-Jahn-Str. 17, 17487, Greifswald, Germany
| | - Andreas Link
- Institute of Pharmacy, Ernst-Moritz-Arndt-University Greifswald, Friedrich-Ludwig-Jahn-Str. 17, 17487, Greifswald, Germany.
| |
Collapse
|
13
|
Oliveira BL, Guo Z, Boutureira O, Guerreiro A, Jiménez‐Osés G, Bernardes GJL. A Minimal, Unstrained S-Allyl Handle for Pre-Targeting Diels-Alder Bioorthogonal Labeling in Live Cells. Angew Chem Int Ed Engl 2016; 55:14683-14687. [PMID: 27763724 PMCID: PMC5132151 DOI: 10.1002/anie.201608438] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 09/27/2016] [Indexed: 11/12/2022]
Abstract
The unstrained S-allyl cysteine amino acid was site-specifically installed on apoptosis protein biomarkers and was further used as a chemical handle and ligation partner for 1,2,4,5-tetrazines by means of an inverse-electron-demand Diels-Alder reaction. We demonstrate the utility of this minimal handle for the efficient labeling of apoptotic cells using a fluorogenic tetrazine dye in a pre-targeting approach. The small size, easy chemical installation, and selective reactivity of the S-allyl handle towards tetrazines should be readily extendable to other proteins and biomolecules, which could facilitate their labeling within live cells.
Collapse
Affiliation(s)
- Bruno L. Oliveira
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
| | - Zijian Guo
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
| | - Omar Boutureira
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
| | - Ana Guerreiro
- Instituto de Medicina MolecularFaculdade de MedicinaUniversidade de LisboaAvenida Professor Egas Moniz1649-028LisboaPortugal
| | - Gonzalo Jiménez‐Osés
- Departamento de QuímicaUniversidad de La RiojaCentro de Investigación en Síntesis Química26006LogroñoSpain
- Institute of Biocomputation and Physics of Complex Systems (BIFI)University of ZaragozaBIFI-IQFR (CSIC)ZaragozaSpain
| | - Gonçalo J. L. Bernardes
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
- Instituto de Medicina MolecularFaculdade de MedicinaUniversidade de LisboaAvenida Professor Egas Moniz1649-028LisboaPortugal
| |
Collapse
|
14
|
Esirden İ, Tanç M, Supuran CT, Kaya M. Microwave assisted synthesis of novel tetrazole/sulfonamide derivatives based on octahydroacridine, xanthene and chromene skeletons as inhibitors of the carbonic anhydrases isoforms I, II, IV and VII. Bioorg Med Chem Lett 2016; 27:86-89. [PMID: 27876475 DOI: 10.1016/j.bmcl.2016.11.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 07/08/2016] [Accepted: 11/11/2016] [Indexed: 11/20/2022]
Abstract
The synthesis of novel tetrazole/sulfonamide derivatives based on octahydroacridine, xanthene and chromene scaffold by using microwave (MW) assisted techniques is reported in this study. These synthesized hybrid compounds were assayed for the inhibition of carbonic anhydrase (CA, EC 4.2.1.1). The inhibitory activities were determined against three cytosolic human isoforms (hCA I, II and VII) and one membrane-associated (hCA IV) isoform. Some of the newly synthesized sulfonamides showed micromolar to nanomolar inhibitory activity against these enzymes.
Collapse
Affiliation(s)
- İbrahim Esirden
- Chemistry Department, Faculty of Arts and Science, Dumlupınar University, 43100 Kütahya, Turkey
| | - Muhammet Tanç
- Università degli Studi di Firenze, NEUROFARBA Dept., Sezione di Scienze Farmaceutiche e Nutraceutiche, 50019 Sesto Fiorentino (Florence), Italy
| | - Claudiu T Supuran
- Università degli Studi di Firenze, NEUROFARBA Dept., Sezione di Scienze Farmaceutiche e Nutraceutiche, 50019 Sesto Fiorentino (Florence), Italy.
| | - Muharrem Kaya
- Biochemistry Department, Faculty of Arts and Science, Dumlupınar University, 43100 Kütahya, Turkey.
| |
Collapse
|
15
|
Takano M, Yasuda K, Higuchi E, Tohyama E, Takeuchi A, Sakaki T, Kittaka A. Synthesis, metabolism, and biological activity of 2-[3-(tetrazolyl)propyl]-1α,25-dihydroxy-19-norvitamin D 3. J Steroid Biochem Mol Biol 2016; 164:40-44. [PMID: 26232635 DOI: 10.1016/j.jsbmb.2015.07.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 07/22/2015] [Accepted: 07/27/2015] [Indexed: 11/20/2022]
Abstract
Recently, we found that 2α-[2-(tetrazol-2-yl)ethyl]-1α,25-dihydroxyvitamin D3 showed higher osteocalcin promoter transactivation activity in human osteosarcoma (HOS) cells and a greater therapeutic effect in ovariectomized (OVX) rats in vivo than those of active vitamin D3, 1α,25(OH)2D3. We were interested in introducing a heterocyclic ring to the C2 position of the seco-steroidal structure via an alkyl linker, and four novel C2-(3-tetrazolylpropyl) substituted 1α,25-dihydroxy-19-norvitamin D3 analogs, 2α-[3-(tetrazol-1-yl)propyl]-, 2β-[3-(tetrazol-1-yl)propyl]-, 2α-[3-(tetrazol-2-yl)propyl]-, and 2β-[3-(tetrazol-2-yl)propyl]-19-nor-1α,25(OH)2D3 were synthesized. Among them, 2α-[3-(tetrazol-1-yl)propyl]-19-nor-1α,25(OH)2D3 showed weak binding affinity for human vitamin D receptor (hVDR) (2.6% of 1α,25(OH)2D3 and ca. 15% of 19-nor-1α,25(OH)2D3) and weak VDR transactivation activity in HOS cells (EC50 7.3nM, when 1α,25(OH)2D30.23nM). Although the other three compounds could not act as VDR binders by evaluation of the competition assays, 2α-[3-(tetrazol-2-yl)propyl]-19-nor-1α,25(OH)2D3 showed weak transactivation activity (EC50 12.5nM). Metabolic stability of the 2α-substituted compounds 2α-[3-(tetrazol-1-yl)propyl]- and 2α-[3-(tetrazol-2-yl)propyl]-19-nor-1α,25(OH)2D3 was higher than that of the 2β-substituted counterparts 2β-[3-(tetrazol-1-yl)propyl]- and 2β-[3-(tetrazol-2-yl)propyl]-19-nor-1α,25(OH)2D3 against human CYP24A1. Introduction of a tetrazole ring to the C2-position of the 19-norvitamin D3 skeleton with the propyl linker led to weak VDR agonistic activity with stability against CYP24A1 metabolism.
Collapse
Affiliation(s)
- Masashi Takano
- Faculty of Pharmaceutical Sciences, Teikyo University, 2-11-1 Kaga, Itabashi, Tokyo 173-8605, Japan
| | - Kaori Yasuda
- Faculty of Engineering, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Erika Higuchi
- Faculty of Pharmaceutical Sciences, Teikyo University, 2-11-1 Kaga, Itabashi, Tokyo 173-8605, Japan
| | - Eri Tohyama
- Faculty of Engineering, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Akiko Takeuchi
- Teijin Institute for Bio-medical Research, Teijin Pharma Ltd., Hino, Tokyo 191-8512, Japan
| | - Toshiyuki Sakaki
- Faculty of Engineering, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Atsushi Kittaka
- Faculty of Pharmaceutical Sciences, Teikyo University, 2-11-1 Kaga, Itabashi, Tokyo 173-8605, Japan.
| |
Collapse
|
16
|
Patil P, Khoury K, Herdtweck E, Dömling A. MCR synthesis of a tetracyclic tetrazole scaffold. Bioorg Med Chem 2015; 23:2699-715. [PMID: 25630499 PMCID: PMC4733496 DOI: 10.1016/j.bmc.2014.12.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/10/2014] [Accepted: 12/11/2014] [Indexed: 11/27/2022]
Abstract
Scaffold diversity is key in the ongoing exercise of discovery of novel bioactive compounds using high throughput screening (HTS). Based on the Ugi tetrazole synthesis we have designed novel bi- and tri-cyclic scaffolds featuring interesting pharmacophore properties. The compounds of the scaffold (B) are synthesizable in large diversity and numbers in two steps using (hetero)phenylethylamines, HN3, oxo components and iscyanoacetaldehyde(dimethylacetale). The chemistry is amenable to parallel synthesis and is used to enhance and fill the screening decks of the European Lead factory (ELF). Here, we are reporting full experimental details, scope and limitations of the reaction, cheminformatic analysis and the 3D structures of selected compounds.
Collapse
Affiliation(s)
- Pravin Patil
- Department of Drug Design, University of Groningen, A. Deusinglaan 1, Groningen 9700 AD, The Netherlands
| | | | | | - Alexander Dömling
- Department of Drug Design, University of Groningen, A. Deusinglaan 1, Groningen 9700 AD, The Netherlands.
| |
Collapse
|
17
|
Abstract
Tetrazoles represent a class of five-membered heterocyclic compounds with polynitrogen electron-rich planar structural features. This special structure makes tetrazole derivatives useful drugs, explosives, and other functional materials with a wide range of applications in many fields of medicine, agriculture, material science, etc. Based on our research works on azoles and other references in recent years, this review covers reported work on the synthesis and biological activities of tetrazole derivatives.
Collapse
Affiliation(s)
- Cheng-Xi Wei
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao 028000, Inner Mongolia, China.
| | - Ming Bian
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao 028000, Inner Mongolia, China.
| | - Guo-Hua Gong
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao 028000, Inner Mongolia, China.
- Affiliated Hospital of Inner Mongolia University for Nationalities, Tongliao 028000, Inner Mongolia, China.
| |
Collapse
|
18
|
Saglam S, Disli A, Erdogdu Y, Marchewka MK, Kanagathara N, Bay B, Güllüoğlu MT. Synthesis, characterization and theoretical studies of 5-(benzylthio)-1-cylopentyl-1H-tetrazole. Spectrochim Acta A Mol Biomol Spectrosc 2015; 135:1011-1018. [PMID: 25171051 DOI: 10.1016/j.saa.2014.07.071] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 07/11/2014] [Accepted: 07/28/2014] [Indexed: 06/03/2023]
Abstract
In this study, 5-(benzylthio)-1-cylopentyl-1H-tetrazole (5B1C1HT) have been synthesized. Boiling points of the obtained compound have been determined and it has been characterized by FT-IR, (1)H NMR, (13)C-APT and LC-MS spectroscopy techniques. The FT-IR, (1)H NMR and (13)C-APT spectral measurements of the 5B1C1HT compound and complete assignment of the vibrational bands observed in spectra has been discussed. The spectra were interpreted with the aid of normal coordinate analysis following full structure optimization and force field calculations based on Density Functional Theory (DFT) at 6-311++G(**), cc-pVDZ and cc-pVTZ basis sets. The optimized geometry with 6-311++G(**) basis sets were used to determine the total energy distribution, harmonic vibrational frequencies, IR intensities.
Collapse
Affiliation(s)
- S Saglam
- Department of Physics, Gazi University, Besevler, 06500 Ankara, Turkey
| | - A Disli
- Department of Chemistry, Gazi University, Besevler, 06500 Ankara, Turkey
| | - Y Erdogdu
- Department of Physics, Ahi Evran University, 40040 Kirsehir, Turkey
| | - M K Marchewka
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, 50-950 Wroclaw 2, Poland.
| | - N Kanagathara
- Department of Physics, Vel Tech Dr. RR & Dr. SR Technical University, Chennai 600062, India
| | - B Bay
- Department of Chemistry, Gazi University, Besevler, 06500 Ankara, Turkey
| | - M T Güllüoğlu
- Department of Physics, Ahi Evran University, 40040 Kirsehir, Turkey
| |
Collapse
|
19
|
Cárdenas-Galindo LE, Islas-Jácome A, Colmenero-Martínez KM, Martínez-Richa A, Gámez-Montaño R. Synthesis of novel bis-1,5-disubstituted-1H-tetrazoles by an efficient catalyst-free Ugi-azide repetitive process. Molecules 2015; 20:1519-26. [PMID: 25608852 PMCID: PMC6272218 DOI: 10.3390/molecules20011519] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 12/25/2014] [Indexed: 12/02/2022] Open
Abstract
A series of five novel bis-1,5-disubstituted-1H-tetrazoles (bis-1,5-DS-1H-T) were quickly prepared by a catalyst-free Ugi-azide repetitive process from easily accessible starting materials in excellent yields, either at room temperature (88%–95%) or using mild MW-heating conditions (80%–91%). These molecules may have a wide range of applications, such as chelating agents, organocatalysts and luminescent materials, and mainly as bioactive compounds.
Collapse
Affiliation(s)
- Luís E Cárdenas-Galindo
- Departamento Química Área Ambiental, Universidad Tecnológica de Salamanca, Av. Universidad Tecnológica No. 200, Col. Ciudad Bajío, Salamanca C.P. 36750, Gto., Mexico.
| | - Alejandro Islas-Jácome
- Departamento de Química, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta S/N, Col. Noria Alta, Guanajuato C.P. 36050, Gto., Mexico.
| | - Karla M Colmenero-Martínez
- Departamento de Química, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta S/N, Col. Noria Alta, Guanajuato C.P. 36050, Gto., Mexico.
| | - Antonio Martínez-Richa
- Departamento de Química, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta S/N, Col. Noria Alta, Guanajuato C.P. 36050, Gto., Mexico.
| | - Rocío Gámez-Montaño
- Departamento de Química, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta S/N, Col. Noria Alta, Guanajuato C.P. 36050, Gto., Mexico.
| |
Collapse
|
20
|
Abstract
This report provides a brief overview of the various representative literature procedures for the synthesis of 1,5-disubstituted tetrazoles (1,5-DSTs) and fused 1,5-disubstituted tetrazoles with more than 120 references. Most of the published methods for the synthesis of 1,5-DSTs include the use of nitriles, amides, thioamides, imidoyl chlorides, heterocumulenes, isocyanates, isothiocyanates, carbodiimides, ketenimines, ketones, amines, and alkenes as the starting materials. The transformation of 1- and 5-substituted tetrazoles into 1,5-DSTs is also covered in this report.
Collapse
Affiliation(s)
- Afshin Sarvary
- Department of Science, Babol University of Technology, Babol, Iran
| | | |
Collapse
|
21
|
Chauhan K, Sharma M, Trivedi P, Chaturvedi V, Chauhan PMS. New class of methyl tetrazole based hybrid of (Z)-5-benzylidene-2-(piperazin-1-yl)thiazol-4(%H)-one as potent antitubercular agents. Bioorg Med Chem Lett 2014; 24:4166-70. [PMID: 25127167 DOI: 10.1016/j.bmcl.2014.07.061] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 07/14/2014] [Accepted: 07/17/2014] [Indexed: 11/30/2022]
Abstract
In search of potential therapeutics for tuberculosis, we describe here the synthesis and in vitro antitubercular activity of a novel series of thiazolone piperazine tetrazole derivatives. Among all the synthesized derivatives, four compounds (10, 14, 20 and 33) exhibited more potent activity (MIC=3.08, 3.01, 2.62 and 2.51 μM) than ethambutol (MIC=9.78 μM) and pyrazinamide (MIC=101.53 μM) against Mycobacterium tuberculosis. Furthermore, they displayed no toxicity against Vero cells (C1008) and mouse bone marrow derived macrophages (MBMDMϕ). These investigated analogues have emerged as possible lead molecule to enlarge the scope of the study.
Collapse
Affiliation(s)
- Kuldeep Chauhan
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, U.P., India
| | - Moni Sharma
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, U.P., India
| | - Priyanka Trivedi
- Drug Target Discovery and Development Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Vinita Chaturvedi
- Drug Target Discovery and Development Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Prem M S Chauhan
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, U.P., India.
| |
Collapse
|
22
|
Rao GW, Wang C, Wang J, Zhao ZG, Hu WX. Synthesis, structure analysis, antitumor evaluation and 3D-QSAR studies of 3,6-disubstituted-dihydro-1,2,4,5-tetrazine derivatives. Bioorg Med Chem Lett 2013; 23:6474-80. [PMID: 24120541 DOI: 10.1016/j.bmcl.2013.09.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 08/25/2013] [Accepted: 09/11/2013] [Indexed: 11/29/2022]
Affiliation(s)
- Guo-Wu Rao
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China.
| | | | | | | | | |
Collapse
|
23
|
Abstract
The design and synthesis of a new class of laser light activatable tetrazoles with extended π-systems is reported. Upon 405 nm laser light irradiation, these bithiophene-substituted tetrazoles underwent extremely fast 1,3-dipolar cycloaddition reactions with dimethyl fumarate with second-order rate constants approaching 4000 M(-1) s(-1). The resulting pyrazoline cycloadducts exhibited solvent-dependent red fluorescence, making these tetrazoles potentially useful as fluorogenic probes for detecting alkenes in vivo.
Collapse
Affiliation(s)
- Peng An
- Department of Chemistry, State University of New York at Buffalo , Buffalo, New York 14260-3000, United States
| | | | | |
Collapse
|
24
|
Nguyen-Trung AT, Tritsch D, Grosdemange-Billiard C, Rohmer M. Synthesis of tetrazole analogues of phosphonohydroxamic acids: an attempt to improve the inhibitory activity against the DXR. Bioorg Med Chem Lett 2013; 23:1643-7. [PMID: 23414808 DOI: 10.1016/j.bmcl.2013.01.080] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 01/15/2013] [Accepted: 01/17/2013] [Indexed: 11/19/2022]
Abstract
This work is focused on the design of new antimicrobial drugs and on the development of lipophilic inhibitors of the DXR, the second enzyme of the MEP pathway for the biosynthesis of isoprene units in most bacteria, by replacing the phosphonate group of fosmidomycin derivatives by a tetrazoyl moiety capable of multiple hydrogen bonding. The N- and C-substituted tetrazole analogues of phosphonohydroxamate inhibitors were synthesized and tested on the DXR of Escherichia coli. This work points out the hypothesis that the phosphonate/phosphate recognition site might be too rigid to accommodate other functional groups.
Collapse
Affiliation(s)
- Anh Thu Nguyen-Trung
- Université de Strasbourg, CNRS, Strasbourg, UMR 7177, Institut Le Bel, 4 rue Blaise Pascal, 67081 Strasbourg, France
| | | | | | | |
Collapse
|
25
|
Malik MA, Al-Thabaiti SA, Malik MA. Synthesis, structure optimization and antifungal screening of novel tetrazole ring bearing acyl-hydrazones. Int J Mol Sci 2012; 13:10880-10898. [PMID: 23109826 PMCID: PMC3472718 DOI: 10.3390/ijms130910880] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 07/30/2012] [Accepted: 08/11/2012] [Indexed: 01/09/2023] Open
Abstract
Azoles are generally fungistatic, and resistance to fluconazole is emerging in several fungal pathogens. In an attempt to find novel azole antifungal agents with improved activity, a series of tetrazole ring bearing acylhydrazone derivatives were synthesized and screened for their in vitro antifungal activity. The mechanism of their antifungal activity was assessed by studying their effect on the plasma membrane using flow cytometry and determination of the levels of ergosterol, a fungal-specific sterol. Propidium iodide rapidly penetrated a majority of yeast cells when they were treated with the synthesized compounds at concentrations just above MIC, implying that fungicidal activity resulted from extensive lesions of the plasma membrane. Target compounds also caused a considerable reduction in the amount of ergosterol. The results also showed that the presence and position of different substituents on the phenyl ring of the acylhydrazone pendant seem to play a role on the antifungal activity as well as in deciding the fungistatic and fungicidal nature of the compounds.
Collapse
Affiliation(s)
- Maqsood Ahmad Malik
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21413, Saudi Arabia; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +966-549347193; Fax: +966-26952292
| | - Shaeel Ahmed Al-Thabaiti
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21413, Saudi Arabia; E-Mail:
| | - Manzoor A. Malik
- Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi, 110025, India; E-Mail:
| |
Collapse
|
26
|
El-Sayed WA, El-Kosy SM, Ali OM, Emselm HM, Abdel-Rahman AAH. Anticancer activity of new (tetrazol-5-yl)methylindole derivatives and their acyclic c-nucleoside analogs. Acta Pol Pharm 2012; 69:669-677. [PMID: 22876609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
New (tetrazol-5-yl)methylindole derivatives were synthesized from 2-phenylindole. Furthermore, the sugar acetyl hydrazones of the tetrazole derivatives as well as their derived acyclic C-nucleoside analogs were prepared. The synthesized compounds were studied for their anticancer activity against human liver carcinoma cell line (HepG2) and the results showed that arylidine substituted tetrazole derivatives 7c and 7d were the most active.
Collapse
Affiliation(s)
- Wael A El-Sayed
- Department of Photochemistry, National Research Centre, Cairo, Egypt.
| | | | | | | | | |
Collapse
|
27
|
Abstract
A concise two-step procedure for the synthesis of novel δ-lactam tetrazoles has been established via the Ugi-azide reaction using 5-oxohexanoic acid along with primary amines, isocyanides, and azidotrimethylsilane followed by 1,1'-carbonyldiimidazole-mediated intramolecular amide formation. Expansion to ε-lactam tetrazole scaffolds was accomplished using methyl 6-oxoheptanoate via the same Ugi-azide reaction followed by basic hydrolysis and SOCl(2) activation to enable lactam formation.
Collapse
Affiliation(s)
- Steven Gunawan
- BIO5 Oro Valley, The University of Arizona, Oro Valley, AZ 85737, USA
| | | | | | | |
Collapse
|
28
|
Du Z, Si C, Li Y, Wang Y, Lu J. Improved synthesis of 5-substituted 1H-tetrazoles via the [3+2] cycloaddition of nitriles and sodium azide catalyzed by silica sulfuric acid. Int J Mol Sci 2012; 13:4696-4703. [PMID: 22606004 PMCID: PMC3344240 DOI: 10.3390/ijms13044696] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 03/19/2012] [Accepted: 03/30/2012] [Indexed: 11/18/2022] Open
Abstract
A silica supported sulfuric acid catalyzed [3+2] cycloaddition of nitriles and sodium azide to form 5-substituted 1H-tetrazoles is described. The protocol can provide a series of 5-substituted 1H-tetrazoles using silica sulfuric acid from nitriles and sodium azide in DMF in 72%–95% yield.
Collapse
Affiliation(s)
- Zhenting Du
- College of Science, Northwest A & F University, Yangling, Shaanxi 712100, China; E-Mails: (C.S.); (Y.L.); (Y.W.); (J.L.)
- Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin, Talimu University, Alaer, Xinjiang 843300, China
- Author to whom correspondence should be addressed; E-Mail: ; Tel./Fax: +86-29-87092226
| | - Changmei Si
- College of Science, Northwest A & F University, Yangling, Shaanxi 712100, China; E-Mails: (C.S.); (Y.L.); (Y.W.); (J.L.)
| | - Youqiang Li
- College of Science, Northwest A & F University, Yangling, Shaanxi 712100, China; E-Mails: (C.S.); (Y.L.); (Y.W.); (J.L.)
| | - Yin Wang
- College of Science, Northwest A & F University, Yangling, Shaanxi 712100, China; E-Mails: (C.S.); (Y.L.); (Y.W.); (J.L.)
| | - Jing Lu
- College of Science, Northwest A & F University, Yangling, Shaanxi 712100, China; E-Mails: (C.S.); (Y.L.); (Y.W.); (J.L.)
| |
Collapse
|
29
|
Ma YH, Xu B, Cui JR, Yang ZJ, Zhang LR, Zhang LH. [Design, synthesis and biological assay of novel tripeptidic tetrazoles as inhibitors of 20S proteasome]. Yao Xue Xue Bao 2012; 47:472-478. [PMID: 22799029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Ubiquitin-proteasome pathway (UPP) is one of the ways utilized for selective degradation of many proteins in cells, and the 20S proteasome takes the functional machinery where hydrolysis of targeted proteins takes place. Based on existing peptide inhibitors, a series of novel tripeptidic tetrazoles have been designed, synthesized, and the structures have been confirmed with 1H NMR, MS and elemental analysis. Among them, three compounds (6b, 6d and 6h) showed inhibitory activities of ChT-L of 20S proteasome.
Collapse
Affiliation(s)
- Yu-Heng Ma
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100091, China
| | | | | | | | | | | |
Collapse
|
30
|
Abstract
The development of a mild, base-free method for the generation of alkylidenecarbenes is reported. Treatment of 5-hydroxyalkyl-1H-tetrazoles with carbodiimides generates products arising from the 1,2-rearrangement or [1,5]-C-H bond insertion of a putative alkylidenecarbene. Formation of this divalent intermediate is proposed to occur by way of a tetraazafulvene, which undergoes extrusion of 2 mol of dinitrogen. Details of this methodology, its application to the synthesis of combretastatin A-4, and an improved route to 5-hydroxyalkyl-1H-tetrazoles are described.
Collapse
Affiliation(s)
- Duncan J Wardrop
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States.
| | | |
Collapse
|
31
|
Stanford SM, Krishnamurthy D, Falk MD, Messina R, Debnath B, Li S, Liu T, Kazemi R, Dahl R, He Y, Yu X, Chan AC, Zhang ZY, Barrios AM, Woods VL, Neamati N, Bottini N. Discovery of a novel series of inhibitors of lymphoid tyrosine phosphatase with activity in human T cells. J Med Chem 2011; 54:1640-54. [PMID: 21341673 PMCID: PMC3086468 DOI: 10.1021/jm101202j] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The lymphoid tyrosine phosphatase LYP, encoded by the PTPN22 gene, is a critical regulator of signaling in T cells and recently emerged as a candidate target for therapy of autoimmune diseases. Here, by library screening, we identified a series of noncompetitive inhibitors of LYP that showed activity in primary T cells. Kinetic analysis confirmed that binding of the compounds to the phosphatase is nonmutually exclusive with respect to a known bidentate competitive inhibitor. The mechanism of action of the lead inhibitor compound 4e was studied by a combination of hydrogen/deuterium-exchange mass spectrometry and molecular modeling. The results suggest that the inhibitor interacts critically with a hydrophobic patch located outside the active site of the phosphatase. Targeting of secondary allosteric sites is viewed as a promising yet unexplored approach to develop pharmacological inhibitors of protein tyrosine phosphatases. Our novel scaffold could be a starting point to attempt development of "nonactive site" anti-LYP pharmacological agents.
Collapse
Affiliation(s)
- Stephanie M. Stanford
- Institute for Genetic Medicine, University of Southern California, Los Angeles, California 90033, United States
- Division of Cell Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, United States
| | - Divya Krishnamurthy
- Institute for Genetic Medicine, University of Southern California, Los Angeles, California 90033, United States
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Matthew D. Falk
- Division of Cell Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, United States
| | - Rossella Messina
- Division of Cell Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, United States
| | - Bikash Debnath
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California, Los Angeles, California 90033, United States
| | - Sheng Li
- Department of Medicine, University of California San Diego, La Jolla, California 92093, United States
| | - Tong Liu
- Department of Medicine, University of California San Diego, La Jolla, California 92093, United States
| | - Roza Kazemi
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California, Los Angeles, California 90033, United States
| | - Russell Dahl
- CPCCG, Sanford-Burnham Medical Research Institute, La Jolla, California 92037, United States
| | - Yantao He
- Department of Biochemistry and Molecular Biology, Indiana University, Indianapolis, Indiana 46202, United States
| | - Xiao Yu
- Department of Biochemistry and Molecular Biology, Indiana University, Indianapolis, Indiana 46202, United States
| | - Andrew C. Chan
- Department of Immunology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Zhong-Yin Zhang
- Department of Biochemistry and Molecular Biology, Indiana University, Indianapolis, Indiana 46202, United States
| | - Amy M. Barrios
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Virgil L. Woods
- Department of Medicine, University of California San Diego, La Jolla, California 92093, United States
| | - Nouri Neamati
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California, Los Angeles, California 90033, United States
| | - Nunzio Bottini
- Institute for Genetic Medicine, University of Southern California, Los Angeles, California 90033, United States
- Division of Cell Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, United States
| |
Collapse
|
32
|
Sasmal PK, Reddy DS, Talwar R, Venkatesham B, Balasubrahmanyam D, Kannan M, Srinivas P, Kyasa SK, Devi BN, Jadhav VP, Khan SK, Mohan P, Chaudhury H, Bhuniya D, Iqbal J, Chakrabarti R. Novel pyrazole-3-carboxamide derivatives as cannabinoid-1 (CB1) antagonists: journey from non-polar to polar amides. Bioorg Med Chem Lett 2011; 21:562-8. [PMID: 21075633 DOI: 10.1016/j.bmcl.2010.10.055] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2010] [Revised: 10/12/2010] [Accepted: 10/13/2010] [Indexed: 02/08/2023]
Abstract
The synthesis and biological evaluation of novel pyrazole-3-carboxamide derivatives as CB1 antagonists are described. As a part of eastern amide SAR, various chemically diverse motifs were introduced. In general, a range of modifications were well tolerated. Several molecules with high polar surface area were also identified as potent CB1 receptor antagonists. The in vivo proof of principle for weight loss is exemplified with a lead compound from this series.
Collapse
Affiliation(s)
- Pradip K Sasmal
- Discovery Research, Dr Reddy's Laboratories Ltd, Bollaram Road, Miyapur, Hyderabad 500049, India.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Abstract
Julia-Kocienski olefination reagents 1-fluoropropyl, (cyclopropyl)fluoromethyl, 1-fluoro-2-methyl-2-propenyl, and 1-fluoro-5-hexenyl 1-phenyl-1H-tetrazol-5-yl (PT) sulfones were prepared by metalation followed by electrophilic fluorination. Although metalation-fluorination of n-propyl, 5-hexenyl, and (cyclopropyl)methyl PT-sulfones proceeded under homogeneous conditions, fluorination of 2-methyl-2-propenyl PT-sulfone required heterogeneous fluorination conditions. Condensation reactions of fluoro PT-sulfones with aldehydes resulted in fluoroalkylidenes in high yields. Screening of olefination conditions showed that stereoselectivity depended on reagent and carbonyl structure and can in many cases be tuned either toward E- or Z-selectivity. For example, LHMDS-mediated condensations of 1-fluoropropyl PT-sulfone in the presence of MgBr(2) x OEt(2) were Z-selective with electron-rich aromatic aldehydes, a hindered aromatic aldehyde, and cinnamaldehyde. Low-temperature KHMDS-mediated condensations were E-selective with electron-rich and electron-deficient aromatic aldehydes and Z-selective with n-octanal. Dialkyl, aryl alkyl, and diaryl ketones reacted as well to give fluoro olefin products in 71-99% yields.
Collapse
Affiliation(s)
- Arun K. Ghosh
- Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031
| | - Barbara Zajc
- Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031
| |
Collapse
|
34
|
Li ZY, Lu PB, Ji H, Shao Q, You QD, Liu X. [Synthesis and anti-histamine release activity of phenyl tetrazole compounds]. Yao Xue Xue Bao 2009; 44:1112-1117. [PMID: 20055133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Ongoing effort to find novel antiasthmatic drugs led to the design and synthesis of a series of compounds bearing phenyl tetrazole group based on the SAR study. The important intermediate 3-(1H-tetrazol-5-yl) benzenamine was synthesized from m-nitroaniline via cyclization and hydrogenation. Followed by amidation, eight new target compounds were obtained. The structures of these compounds were confirmed with 1H NMR, ESI-MS and elemental analysis. Their non-specific and specific anti-histamine effects in the mast cell were determined. Compound NP03 could inhibit non-specific histamine release induced by compound 48/80 in mast cell of SD rats.
Collapse
Affiliation(s)
- Zhi-Yu Li
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | | | | | | | | | | |
Collapse
|
35
|
Kavitha CV, Gaonkar SL, Narendra Sharath Chandra JN, Sadashiva CT, Rangappa KS. Synthesis and screening for acetylcholinesterase inhibitor activity of some novel 2-butyl-1,3-diaza-spiro[4,4]non-1-en-4-ones: Derivatives of irbesartan key intermediate. Bioorg Med Chem 2007; 15:7391-8. [PMID: 17888667 DOI: 10.1016/j.bmc.2007.07.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2007] [Revised: 07/15/2007] [Accepted: 07/18/2007] [Indexed: 11/27/2022]
Abstract
The association of bioactive nucleus with other pharmacological agents is hoped to improve the efficacy of the treatment by combining the effects of different pharmacological mechanisms of action. Keeping this in view, a series of 2-butyl-1,3-diaza-spiro[4,4]non-1-en-4-one derivatives have been synthesized by interaction of 2-butyl-1,3-diaza-spiro[4,4]non-1-en-4-one with different bioactive aralkyl halides in presence of powdered potassium carbonate by two different methods viz., conventional and microwave irradiation. The yields under conventional and microwave irradiation methods were in the range of 60-65% and 80-90%, respectively. The structure elucidation of the new compounds has been carried out with the help of elemental analysis and spectral data. All the synthesized compounds have been screened for their efficacy as acetylcholinesterase (AChE) inhibitor. AChE inhibitory activity study was carried out by using Ellman colorimetric assay with neostigmine as a reference standard against targets from different species, such as pure electric eel AChE, human serum AChE, and rat brain AChE. Among the compounds synthesized, compounds 5a, 5b, 5j showed good inhibition against AChE.
Collapse
Affiliation(s)
- C V Kavitha
- Department of Studies in Chemistry, University of Mysore, Manasagangothri, Mysore 570006, India
| | | | | | | | | |
Collapse
|
36
|
Aureggi V, Sedelmeier G. 1,3-Dipolar Cycloaddition: Click Chemistry for the Synthesis of 5-Substituted Tetrazoles from Organoaluminum Azides and Nitriles. Angew Chem Int Ed Engl 2007; 46:8440-4. [PMID: 17899564 DOI: 10.1002/anie.200701045] [Citation(s) in RCA: 146] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Valentina Aureggi
- Chemical and Analytical Development, Novartis Pharma AG, WKL.684.2.24, Klybeckstrasse 141, 4057 Basel, Switzerland
| | | |
Collapse
|
37
|
Hernández AS, Cheng PTW, Musial CM, Swartz SG, George RJ, Grover G, Slusarchyk D, Seethala RK, Smith M, Dickinson K, Giupponi L, Longhi DA, Flynn N, Murphy BJ, Gordon DA, Biller SA, Robl JA, Tino JA. Discovery, synthesis, and structure–activity studies of tetrazole based growth hormone secretagogues. Bioorg Med Chem Lett 2007; 17:5928-33. [PMID: 17869100 DOI: 10.1016/j.bmcl.2007.07.099] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2007] [Revised: 07/24/2007] [Accepted: 07/24/2007] [Indexed: 11/29/2022]
Abstract
A novel class of Growth Hormone Secretagogues (GHS), based on a tetrazole template, has been discovered. In vitro SAR and in vivo potency within this new class of GHS are described. The tetrazole 9q exhibits good oral bioavailability in rats and dogs as well as efficacy following an oral 10 mg/kg dose in dogs. Solution and solid phase protocols for the synthesis of tetrazole based GHS have been developed.
Collapse
Affiliation(s)
- Andrés S Hernández
- Discovery Chemistry, Bristol-Myers Squibb Pharmaceutical Research Institute, Princeton, NJ 08543, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Cullen MD, Deng BL, Hartman TL, Watson KM, Buckheit RW, Pannecouque C, Clercq ED, Cushman M. Synthesis and biological evaluation of alkenyldiarylmethane HIV-1 non-nucleoside reverse transcriptase inhibitors that possess increased hydrolytic stability. J Med Chem 2007; 50:4854-67. [PMID: 17803290 DOI: 10.1021/jm070382k] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Non-nucleoside inhibitors of HIV reverse transcriptase (NNRTIs), albeit not the mainstays of HIV/AIDS treatment, have become increasingly important in highly active antiretroviral therapy (HAART) due to their unique mechanism of action. Several years ago our group identified the alkenyldiarylmethanes (ADAMs) as a potent and novel class of NNRTIs; however, the most active compounds were found to be metabolically unstable. Subsequent work has led to the synthesis of 33 analogues, with improved metabolic profiles, through the replacement of labile esters with various heterocycles, nitriles, and thioesters. As a result, a number of hydrolytically stable NNRTIs were identified with anti-HIV activity in the nanomolar concentration range. Furthermore, an improved pharmacophore model has been developed based on the new ADAM series, in which a salicylic acid-derived aryl ring is oriented cis to the side chain and the aryl ring that is trans to the side chain contains a hydrogen bond acceptor site within the plane of the ring.
Collapse
Affiliation(s)
- Matthew D Cullen
- Department of Medicinal Chemistry and Molecular Pharmacology, School of Pharmacy and Pharmaceutical Sciences, Purdue University, West Lafayette, Indiana 47907, Imquest Biosciences, 7340 Executive Way, Suite R, Frederick, Maryland 21704, USA
| | | | | | | | | | | | | | | |
Collapse
|
39
|
Abstract
An efficient synthesis of the angiotensin II inhibitor valsartan (Diovan) is presented. Two routes were evaluated, both making use of an advanced version of our decarboxylative coupling for the construction of the biaryl moiety. Thus, in the presence of a catalyst system consisting of copper(II) oxide, 1,10-phenanthroline, and palladium(II) bromide, 2-cyanocarboxylic acid was coupled with 1-bromo(4-dimethoxymethyl)benzene in 80% yield and with 4-bromotoluene in 71% yield. The valsartan synthesis using 1-bromo(4-dimethoxymethyl)benzene was completed in four steps overall with a total yield of 39%, via a novel route that presents substantial economical and ecological advantages over the literature process, as it is more concise and stoichiometric amounts of expensive organometallic reagents are avoided.
Collapse
Affiliation(s)
- Lukas J Goossen
- Institut für Organische Chemie, TU Kaiserslautern, Erwin-Schrödinger-Strasse, D-67663 Kaiserslautern, Germany.
| | | |
Collapse
|
40
|
Bosch L, Vilarrasa J. Cu2(OTf)2-catalyzed and microwave-controlled preparation of tetrazoles from nitriles and organic azides under mild, safe conditions. Angew Chem Int Ed Engl 2007; 46:3926-30. [PMID: 17427165 DOI: 10.1002/anie.200605095] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lluís Bosch
- Departament de Química Orgànica, Universitat de Barcelona, Av. Diagonal 647, 08028 Barcelona, Spain
| | | |
Collapse
|
41
|
Abstract
This protocol describes a procedure for the Ugi four-component condensation. It describes the general mechanism as well as the effects of the nature of the components on the Ugi reaction. It also describes the effects of the reaction conditions on the reaction, along with special procedures and workup. The experimental procedure is exemplified by a description of the preparation of N-cyclohexyl 2-[N-(2-chloroacetyl)-N-(4-chlorobenzyl)]amino-2-(4-chlorophenyl)acetamide, a typical Ugi product, that is subsequently used for the synthesis of a 2,5-diketopiperazine, an example of an important type of pharmaceutical compound. The experimental procedure is then extended to the synthesis of a 1,5-disubstituted tetrazole via Ugi four-component condensation. The protocol describes the preparation and characterization of the new 1-cyclohexyl-5-(1-phenylamino-2-methyl)propyltetrazole. The total time for the synthesis and isolation of the two example reactions in parallel is 3 d.
Collapse
Affiliation(s)
- Stefano Marcaccini
- Dipartimento di Chimica Organica Ugo Schiff, Università di Firenze, Via della Lastruccia, 13, I-50019 Sesto Fiorentino, Italy
| | | |
Collapse
|
42
|
Couri MR, Luduvico I, Santos L, Alves R, Prado MA, Gil RF. Microwave-assisted efficient preparation of novel carbohydrate tetrazole derivatives. Carbohydr Res 2007; 342:1096-100. [PMID: 17359951 DOI: 10.1016/j.carres.2007.02.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2006] [Revised: 02/08/2007] [Accepted: 02/09/2007] [Indexed: 11/25/2022]
Abstract
A series of novel N-1, N-2 and S-5 saccharide substituted tetrazole derivatives linked at anomeric and nonanomeric positions were obtained from commercial tetrazoles under microwave irradiation. Yields are compared with conventional methodologies.
Collapse
Affiliation(s)
- Mara Rubia Couri
- Departamento de Química--ICEx, Universidade Federal de Minas Gerais, CEP: 31270-901 Belo Horizonte, MG, Brazil
| | | | | | | | | | | |
Collapse
|
43
|
Vogensen SB, Frydenvang K, Greenwood JR, Postorino G, Nielsen B, Pickering DS, Ebert B, Bølcho U, Egebjerg J, Gajhede M, Kastrup JS, Johansen TN, Clausen RP, Krogsgaard-Larsen P. A Tetrazolyl-Substituted Subtype-Selective AMPA Receptor Agonist⊥. J Med Chem 2007; 50:2408-14. [PMID: 17455929 DOI: 10.1021/jm061439q] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Replacement of the methyl group of the AMPA receptor agonist 2-amino-3-[3-hydroxy-5-(2-methyl-2H-5-tetrazolyl)-4-isoxazolyl]propionic acid (2-Me-Tet-AMPA) with a benzyl group provided the first AMPA receptor agonist, compound 7, capable of discriminating GluR2-4 from GluR1 by its more than 10-fold preference for the former receptor subtypes. An X-ray crystallographic analysis of this new analogue in complex with the GluR2-S1S2J construct shows that accommodation of the benzyl group creates a previously unobserved pocket in the receptor, which may explain the remarkable pharmacological profile of compound 7.
Collapse
Affiliation(s)
- Stine B Vogensen
- Department of Medicinal Chemistry, The Faculty of Pharmaceutical Sciences, University of Copenhagen, 2 Universitetsparken, DK-2100 Copenhagen, Denmark
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Nyman MJ, Eskola O, Kajander J, Vahlberg T, Sanabria S, Burns D, Hargreaves R, Solin O, Hietala J. Gender and age affect NK1 receptors in the human brain - a positron emission tomography study with [18F]SPA-RQ. Int J Neuropsychopharmacol 2007; 10:219-29. [PMID: 16573846 DOI: 10.1017/s1461145706006572] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2005] [Revised: 01/25/2006] [Accepted: 01/25/2006] [Indexed: 11/06/2022] Open
Abstract
Substance P (SP) is a neurotransmitter and neuromodulator that mediates its effects in the brain predominantly via the neurokinin-1 receptors (NK1Rs). NK1Rs and SP have been shown clinically to be involved in nausea and emesis after chemotherapy (CINV) and have been implicated preclinically in a range of neuropsychiatric disorders but unlike CINV their blockade in these conditions does not have proven clinical value. We investigated whether age and gender affects NK1R binding potential (NK1R-BP; an index of receptor availability) in the living human brain using PET and [18F]SPA-RQ, a highly specific NK1R antagonist. Forty-five healthy volunteers (35 male and 10 female), aged between 19 and 55 years were studied. NK1R-BP was estimated using the simplified reference tissue model with cerebellum as a reference region. A regression analysis indicated that that a loss of NK1R is associated with normal ageing as shown by decreased NK1R-BP (average rate 7% per decade). Statistically significant negative associations between age and NK1R-BP were observed in temporal, parietal and frontal cortex, hippocampus and parahippocampal formation. In addition preliminary data were obtained suggesting possible gender differences in NK1R-BP in the cortex and putamen with females having a lower NK1R-BP. The exact physiological significance of these results remains to be elucidated but conceptually they could be involved in age-related CNS disorders or those with gender differences in prevalence.
Collapse
Affiliation(s)
- Mikko J Nyman
- Turku PET Centre, Neuropsychiatric Imaging, Turku, Finland
| | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Hajra S, Sinha D, Bhowmick M. Metal Triflate Catalyzed Reactions of Alkenes, NBS, Nitriles, and TMSN3: Synthesis of 1,5-Disubstituted Tetrazoles. J Org Chem 2007; 72:1852-5. [PMID: 17266377 DOI: 10.1021/jo062432j] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A versatile and highly efficient protocol for the synthesis of 1,5-disubstituted tetrazoles has been developed by metal triflate catalyzed one-pot reaction of alkenes, NBS, nitriles, and TMSN3. Among the metal triflates, Zn(OTf)2 was found to be the best catalyst. Use of different combinations of alkenes and nitriles generate a variety of 1,5-disubstituted tetrazoles containing an additional alpha-bromo functionality of the N1-alkyl substituent.
Collapse
Affiliation(s)
- Saumen Hajra
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721 302, India.
| | | | | |
Collapse
|
46
|
Luo YP, Yang GF. Discovery of a new insecticide lead by optimizing a target-diverse scaffold: Tetrazolinone derivatives. Bioorg Med Chem 2007; 15:1716-24. [PMID: 17178226 DOI: 10.1016/j.bmc.2006.12.002] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2006] [Revised: 12/01/2006] [Accepted: 12/02/2006] [Indexed: 02/06/2023]
Abstract
In order to discover lead compounds with novel action mechanism, a series of tetrazolinone derivatives bearing structurally diverse substituents, 1-aryl-4-substituted-1,4-di-hydro-5H-tetrazol-5-ones 2, 1-((5-(alkylthio)-1,3,4-oxadiazol-2-yl)methyl)-4-(substituted)- phenyl-1H-tetrazol-5(4H)-ones 5, and 1-((5-(alkylthio)-1,3,4-thiadiazol-2-yl)methyl)-4- (substituted)phenyl-1H-tetrazol-5(4H)-ones 7, were designed and synthesized in good yields by a multiple-step synthetic procedure. The results of greenhouse in vivo test indicated that all the target compounds did not displayed herbicidal activity, however, some of them exhibited excellent in vivo insecticidal activity against Tetranychus cinnabarinus at the concentration of 250 mg L-1. To our knowledge, this is the first report about the insecticidal activity of tetrazolinone derivatives, which indicated that the tetrazolinone scaffold could be identified as a novel insecticidal lead structure. The present work demonstrated that optimizing a target-diverse scaffold is an effective way to discover new lead compounds with new action mechanism or biological activity.
Collapse
Affiliation(s)
- Yan-Ping Luo
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | | |
Collapse
|
47
|
Abstract
An adaptive tetrazole-derived host provides insight into tetrazolate-biomolecule interactions, and is the first member of a new family of receptors that function in pure water.
Collapse
Affiliation(s)
- Devin J Mahnke
- Department of Chemistry, University of Victoria, Victoria, Canada
| | | | | |
Collapse
|
48
|
Sivabalan R, Anniyappan M, Pawar SJ, Talawar MB, Gore GM, Venugopalan S, Gandhe BR. Synthesis, characterization and thermolysis studies on triazole and tetrazole based high nitrogen content high energy materials. J Hazard Mater 2006; 137:672-80. [PMID: 16677759 DOI: 10.1016/j.jhazmat.2006.03.038] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2005] [Revised: 03/07/2006] [Accepted: 03/10/2006] [Indexed: 05/09/2023]
Abstract
This paper reports the synthesis, characterisation and thermolysis studies of hydrazinium azotetrazolate (HAZ) and 1,1'-dinitro-3,3'-azo-1,2,4-triazole (N-DNAT). TGA and DSC results suggested that HAZ decomposes in the range of 150-180 degrees C and N-DNAT in the range of 160-170 degrees C, respectively. The pattern of decomposition of HAZ dihydrate and N-DNAT has been predicted with the help of pyrolysis GC/MS technique and a probable decomposition mechanism has been proposed. The theoretically predicted performance data suggests the potential nature of HAZ and N-DNAT for their use in propellant/explosive as well as in gas generator formulations.
Collapse
Affiliation(s)
- R Sivabalan
- High Energy Materials Research Laboratory, Pune 411 021, India.
| | | | | | | | | | | | | |
Collapse
|
49
|
Müh U, Schuster M, Heim R, Singh A, Olson ER, Greenberg EP. Novel Pseudomonas aeruginosa quorum-sensing inhibitors identified in an ultra-high-throughput screen. Antimicrob Agents Chemother 2006; 50:3674-9. [PMID: 16966394 PMCID: PMC1635174 DOI: 10.1128/aac.00665-06] [Citation(s) in RCA: 210] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The opportunistic pathogen Pseudomonas aeruginosa has two complete acyl-homoserine lactone (acyl-HSL) signaling systems, LasR-LasI and RhlR-RhlI. LasI catalyzes the synthesis of N-3-oxododecanoyl homoserine lactone (3OC12-HSL), and LasR is a transcription factor that requires 3OC12-HSL as a ligand. RhlI catalyzes the synthesis of N-butanoyl homoserine lactone (C4), and RhlR is a transcription factor that responds to C4. LasR and RhlR control the transcription of hundreds of P. aeruginosa genes, many of which are critical virulence determinants, and LasR is required for RhlR function. We developed an ultra-high-throughput cell-based assay to screen a library of approximately 200,000 compounds for inhibitors of LasR-dependent gene expression. Although the library contained a large variety of chemical structures, the two best inhibitors resembled the acyl-homoserine lactone molecule that normally binds to LasR. One compound, a tetrazole with a 12-carbon alkyl tail designated PD12, had a 50% inhibitory concentration (IC50) of 30 nM. The second compound, V-06-018, had an IC50 of 10 microM and is a phenyl ring with a 12-carbon alkyl tail. A microarray analysis showed that both compounds were general inhibitors of quorum sensing, i.e., the expression levels of most LasR-dependent genes were affected. Both compounds also inhibited the production of two quorum-sensing-dependent virulence factors, elastase and pyocyanin. These compounds should be useful for studies of LasR-dependent gene regulation and might serve as scaffolds for the identification of new quorum-sensing modulators.
Collapse
Affiliation(s)
- Ute Müh
- Vertex Pharmaceuticals Inc., 2501 Crosspark Rd., MTF E160, Coralville, IA 52241, USA.
| | | | | | | | | | | |
Collapse
|
50
|
Nelson DW, Gregg RJ, Kort ME, Perez-Medrano A, Voight EA, Wang Y, Grayson G, Namovic MT, Donnelly-Roberts DL, Niforatos W, Honore P, Jarvis MF, Faltynek CR, Carroll WA. Structure-activity relationship studies on a series of novel, substituted 1-benzyl-5-phenyltetrazole P2X7 antagonists. J Med Chem 2006; 49:3659-66. [PMID: 16759108 DOI: 10.1021/jm051202e] [Citation(s) in RCA: 195] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
1-Benzyl-5-aryltetrazoles were discovered to be novel antagonists for the P2X(7) receptor. Structure-activity relationship (SAR) studies were conducted around both the benzyl and phenyl moieties. In addition, the importance of the regiochemical substitution on the tetrazole was examined. Compounds were evaluated for activity to inhibit calcium flux in both human and rat recombinant P2X(7) cell lines using fluorometric imaging plate reader technology. Analogues were also assayed for their ability to inhibit IL-1beta release and to inhibit P2X(7)-mediated pore formation in human THP-1 cells. Compound 15d was advanced to efficacy studies in a model of neuropathic pain where significant reversal of mechanical allodynia was observed at doses that did not affect motor coordination.
Collapse
Affiliation(s)
- Derek W Nelson
- Abbott Laboratories, Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Park, Illinois 60064-6101, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|