1
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Kongphet M, Hang HTX, Ngo TT, Le TKD, Chavasiri W. Structural modification of tanshinone IIA and their α-glucosidase inhibitory activity. Bioorg Med Chem Lett 2024; 105:129736. [PMID: 38599295 DOI: 10.1016/j.bmcl.2024.129736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/03/2024] [Accepted: 04/06/2024] [Indexed: 04/12/2024]
Abstract
α-Glucosidase is one of the therapeutic approaches for treating type 2 diabetes mellitus. Almost 95 % of diabetes patients worldwide have been diagnosed with type 2 diabetes, resulting in 1.5 million fatalities each year. Newly synthesized oxazole-based tanshinone IIA derivatives (1a-n) were designed and evaluated for their inhibitory activity against α-glucosidase enzyme. Eight compounds (1a-d, 1f-g, 1j, and 1m) demonstrated excellent inhibition with IC50 values ranging from 0.73 ± 0.11 to 9.46 ± 0.57 μM as compared to tanshinone IIA (IC50 = 11.39 ± 0.77 μM) and standard acarbose (IC50 = 100.00 ± 0.95 μM). Among this series, 1j bearing two hydroxyls group over the phenyl ring was identified as the most potent α-glucosidase inhibitor with IC50 value of 0.73 ± 0.11 μM. Molecular docking simulations were done for the most active compound to identify important binding modes responsible for inhibition activity of α-glucosidase. In addition, the kinetic study was also performed to understand the mode of inhibition.
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Affiliation(s)
- Mutita Kongphet
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
| | - Hoa Tai Xuan Hang
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
| | - Thanh The Ngo
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
| | - Thi-Kim-Dung Le
- Laboratory of Biophysics, Institute for Advanced Study in Technology, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
| | - Warinthorn Chavasiri
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand.
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2
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Bharath kumar M, Hariprasad V, Joshi SD, Jayaprakash GK, L. P, Pani AS, Babu DD, Naik P. Bis(azolyl)pyridine‐2,6‐dicarboxamide Derivatives: Synthesis, Bioassay Analysis and Molecular Docking Studies. ChemistrySelect 2023. [DOI: 10.1002/slct.202204927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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3
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Zhu Z, Boger DL. N1/N4 1,4-Cycloaddition of 1,2,4,5-Tetrazines with Enamines Promoted by the Lewis Acid ZnCl 2. J Org Chem 2022; 87:6288-6301. [PMID: 35417656 PMCID: PMC9081262 DOI: 10.1021/acs.joc.2c00543] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The second example of selective N1/N4 1,4-cycloaddition (vs C3/C6 1,4-cycloaddition) of 1,2,4,5-tetrazines with preformed or in situ generated enamines now promoted by the Lewis acid ZnCl2 and with an expanded scope is described. The reaction constitutes a formal [4 + 2] cycloaddition across two nitrogen atoms (N1/N4 vs C3/C6) of a 1,2,4,5-tetrazine followed by retro [4 + 2] cycloaddition loss of a nitrile and aromatization to provide 1,2,4-triazines. Optimization of reaction parameters, simplification of its implementation through in situ enamine generation from ketones, definition of the enamine reaction scope for 3,6-bis(thiomethyl)-1,2,4,5-tetrazine, exploration of the 1,2,4,5-tetrazine scope, and representative applications of the product 1,2,4-triazines are detailed. The work establishes and further extends a powerful method for efficient one-step regioselective synthesis of 1,2,4-triazines under mild reaction conditions directly now from easily accessible ketones. It extends the substrate scope of a solvent (hexafluoroisopropanol) hydrogen bonding-promoted reaction that we recently reported with aryl-conjugated enamines, permitting the use of simple ketone-derived enamines and expanding the generality of the remarkable reaction. The reaction is regioselective with respect to the site of reaction with unsymmetrical ketones and provides exclusively a single 1,2,4-triazine regioisomer consistent with our previously established stepwise mechanism of formal N1/N4 1,4-cycloaddition, overcoming the challenges observed in conventional approaches to 1,2,4-triazines.
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Affiliation(s)
- Zixi Zhu
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Dale L Boger
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
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4
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Farooq S, Ngaini Z. Synthesis of Benzalacetophenone Based Isoxazoline and Isoxazole Derivatives. CURR ORG CHEM 2022. [DOI: 10.2174/1385272826666220408120350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
The demand for natural product based drugs with less cost and efficient procedures has become a challenge to researchers. Benzalacetophenone is a natural product based species that is modified into numerous heterocyclic compounds including isoxazoline and isoxazole derivatives. The utility of isoxazoline and oxazole derivatives has been increased for the synthesis of the new and effective chemical entities to serve medicinal chemistry in the past few years. Isoxazoline and isoxazole are fascinating classes of heterocyclic compounds, which belong to N- and O-heterocycles, and are widely used as precursors for the development of drugs. This review highlights the recent work for the synthesis of mono and bis isoxazoline and isoxazole derivatives using stable benzalacetophenone and functionalization of isoxazoline and isoxazole, along with the prevailing biological properties.
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Affiliation(s)
- Saba Farooq
- Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia
| | - Zainab Ngaini
- Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia
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5
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Evren AE, Yurttaş L, Ekselli B, Aksoy O, Akalin-Çiftçi G. Design and Efficient Synthesis of Novel 4,5-Dimethylthiazole-Hydrazone Derivatives and their Anticancer Activity. LETT DRUG DES DISCOV 2021. [DOI: 10.2174/1570180817999201022192937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Background::
Recently, researchers have been warning about the increased mortality of
the various cancer types. Also, the lung adenocarcinoma and the glioma types are burning issues for
world's health due to late or wrong diagnosis and/or insufficient treatment methods. For this
purpose, our research group designed and synthesized novel 4,5-dimethyl thiazole-hydrazone
derivatives which were tested against cancer and normal cell lines to understand the structureactivity
relationship (SAR).
Method::
The lead compounds were obtained by reacting 2-(substituted aryl-2-ylmethylene)
hydrazin-1-carbothioamide with 3-chloro-2-butanone derivatives. The structural elucidation of the
compounds was performed by 1H-NMR, 13C-NMR, and LC/MS-IT-TOF spectral and elemental
analyses. The synthesized compounds were tested in vitro for the anticancer activity against A549
human lung adenocarcinoma and C6 rat glioma cells and investigated for which pathway to induce
cell death. Also, the docking study of the active compounds was achieved to understand the SAR.
Result and Discussion::
The targeted compounds (2a-2l) were synthesized successfully above 70% yields, and
the analysis findings proved their purity. In general, the results of activity studies displayed
significant effects against at least one cell line, except compounds 2e (indol-3-yl) and 2h
(4-dimethylaminophenyl). Furthermore, compounds 2b and 2f displayed potential anticancer
activity. With the help of molecular docking study, a potential selectivity of compound 2f was
observed for type II protein kinase. On the other hand, compound 2b interacted with the active site
nearly the same as Dasatinib. Therefore, these two compounds could be used as a base on
developing selective anticancer drugs.
Conclusion::
Pyridin-2-yl (2b) derivative was found to be a favorable molecule with high anticancer
potency against C6 and A549 cell lines. Additionally, 1-naphthyl (2f) derivative was a worthy
compound for potential selectivity. In future studies, it will be our priority to focus on developing
derivatives of these two compounds (2b and 2f) and elucidate their mechanisms.
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Affiliation(s)
- Asaf Evrim Evren
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir,Turkey
| | - Leyla Yurttaş
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir,,Turkey
| | - Büşra Ekselli
- Department of Biochemistry, Faculty of Pharmacy, Anadolu University, Eskişehir,Turkey
| | - Onur Aksoy
- Department of Biochemistry, Faculty of Pharmacy, Anadolu University, Eskişehir,Turkey
| | - Gülşen Akalin-Çiftçi
- Department of Biochemistry, Faculty of Pharmacy, Anadolu University, Eskişehir,Turkey
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6
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Szymanowska A, Gornowicz A, Bielawska A, Bielawski K. [1,2,4]triazines – as potential drugs in cancer chemotherapy. POSTEP HIG MED DOSW 2021. [DOI: 10.5604/01.3001.0014.7145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Cancers are a high risk for humanity. In 2018, approximately 18 million new cancer cases
were diagnosed in the world. The choice of treatment depends on the type of cancer
and its stage at diagnosis. The treatment of cancer consists mainly of surgical methods,
radiotherapy, immunotherapy, hormone therapy and chemotherapy. Cytotoxic drugs can
be used both in monotherapy and combination therapy. In 2009-2018, the US. Food and
Drug Administration (FDA) approved about 356 new drugs for cancer therapy. However,
it should be noted that despite the increasing availability of modern drugs, this disease is
the second leading cause of death in the world. Research on the development of a cytotoxic
drug is aimed at designing a compound structure, whose action is directed at cancer
cells while not affecting normal cells. Triazine derivatives might be the chemical structure
with potential anticancer activity. This scaffold has been used in oncological therapy
since 1965. Depending on the location of the nitrogen atoms in the ring, three isomers
can be distinguished: [1,2,3]triazines, [1,2,4]triazines, [1,3,5]triazines. Modification of the
structure of the [1,2,4]triazine derivatives should provide stronger cytotoxic properties
and reduce the side effects of the novel drug. Designing new preparations also aims to
improve the patient’s quality of life. This review will briefly present how the modification of the chemical structure of [1,2,4]triazine derivatives increases their cytotoxic activity
against cancer and why these compounds may be better tolerated than current therapy.
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Affiliation(s)
| | | | - Anna Bielawska
- Zakład Biotechnologii, Uniwersytet Medyczny w Białymstoku
| | - Krzysztof Bielawski
- Zakład Syntezy i Technologii Środków Leczniczych, Uniwersytet Medyczny w Białymstoku
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7
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Zhu Z, Glinkerman CM, Boger DL. Selective N1/N4 1,4-Cycloaddition of 1,2,4,5-Tetrazines Enabled by Solvent Hydrogen Bonding. J Am Chem Soc 2020; 142:20778-20787. [PMID: 33252223 PMCID: PMC7725851 DOI: 10.1021/jacs.0c09775] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An unprecedented 1,4-cycloaddition (vs 3,6-cycloaddition) of 1,2,4,5-tetrazines is described with preformed or in situ generated aryl-conjugated enamines promoted by the solvent hydrogen bonding of hexafluoroisopropanol (HFIP) that is conducted under mild reaction conditions (0.1 M HFIP, 25 °C, 12 h). The reaction constitutes a formal [4 + 2] cycloaddition across the two nitrogen atoms (N1/N4) of the 1,2,4,5-tetrazine followed by a formal retro [4 + 2] cycloaddition loss of a nitrile and aromatization to generate a 1,2,4-triazine derivative. The factors that impact the remarkable change in the reaction mode, optimization of reaction parameters, the scope and simplification of its implementation through in situ enamine generation from aldehydes and ketones, the reaction scope for 3,6-bis(thiomethyl)-1,2,4,5-tetrazine, a survey of participating 1,2,4,5-tetrazines, and key mechanistic insights into this reaction are detailed. Given its simplicity and breath, the study establishes a novel method for the simple and efficient one-step synthesis of 1,2,4-triazines under mild conditions from readily accessible starting materials. Whereas alternative protic solvents (e.g., MeOH vs HFIP) provide products of the conventional 3,6-cycoladdition, the enhanced hydrogen bonding capability of HFIP uniquely results in promotion of the unprecedented formal 1,4-cycloaddition. As such, the studies represent an example of not just an enhancement in the rate or efficiency of a heterocyclic azadiene cycloaddition by hydrogen bonding catalysis but also the first to alter the mode (N1/N4 vs C3/C6) of cycloaddition.
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Affiliation(s)
- Zixi Zhu
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, USA
| | - Christopher M. Glinkerman
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, USA
| | - Dale L. Boger
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, USA
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8
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Matiadis D, Sagnou M. Pyrazoline Hybrids as Promising Anticancer Agents: An Up-to-Date Overview. Int J Mol Sci 2020; 21:E5507. [PMID: 32752126 PMCID: PMC7432644 DOI: 10.3390/ijms21155507] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 02/07/2023] Open
Abstract
Pyrazolines are five-membered heterocycles possessing two adjacent nitrogens. They have attracted significant attention from organic and medicinal chemists due to their potent biological activities and the numerous possibilities for structural diversification. In the last decade, they have been intensively studied as targets for potential anticancer therapeutics, producing a steady yearly rise in the number of published research articles. Many pyrazoline derivatives have shown remarkable cytotoxic activities in the form of heterocyclic or non-heterocyclic based hybrids, such as with coumarins, triazoles, and steroids. The enormous amount of related literature in the last 5 years prompted us to collect all these published data from screening against cancer cell lines, or protein targets like EGFR and structure activity relationship studies. Therefore, in the present review, a comprehensive account of the compounds containing the pyrazoline nucleus will be provided. The chemical groups and the structural modifications responsible for the activity will be highlighted. Moreover, emphasis will be given on recent examples from the literature and on the work of research groups that have played a key role in the development of this field.
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Affiliation(s)
- Dimitris Matiadis
- National Center for Scientific Research “Demokritos”, Institute of Biosciences & Applications, 153 10 Athens, Greece;
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9
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Gao F, Huang G, Xiao J. Chalcone hybrids as potential anticancer agents: Current development, mechanism of action, and structure-activity relationship. Med Res Rev 2020; 40:2049-2084. [PMID: 32525247 DOI: 10.1002/med.21698] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 05/19/2020] [Accepted: 05/24/2020] [Indexed: 12/14/2022]
Abstract
The continuous emergency of drug-resistant cancers and the low specificity of anticancer agents have been the major challenges in the control and treatment of cancer, making an urgent need to develop novel anticancer agents with high efficacy. Chalcones, precursors of flavonoids and isoflavonoids, exhibit structural heterogeneity and can act on various drug targets. Chalcones which demonstrated potential in vitro and in vivo activity against both drug-susceptible and drug-resistant cancers, are useful templates for the development of novel anticancer agents. Hybridization of chalcone moiety with other anticancer pharmacophores could provide the hybrids which have the potential to overcome drug resistance and improve the specificity, so it represents a promising strategy to develop novel anticancer agents. This review emphasizes the development, the mechanisms of action as well as structure-activity relationships of chalcone hybrids with potential therapeutic application for many cancers in recent 10 years.
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Affiliation(s)
- Feng Gao
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.,Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Gang Huang
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Jiaqi Xiao
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.,Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
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10
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El-Kheshen AA, Abd El Aty AA, Ghoneim NA, Marzouk MA. Antimicrobial activity and FTIR spectral properties of some phosphate glasses and glass–ceramics from the system P2O5–NaF–CaF2 and effects of dopants. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1048-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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11
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Synthesis, homology modeling, molecular docking, dynamics, and antifungal screening of new 4-hydroxycoumarin derivatives as potential chitinase inhibitors. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.11.099] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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12
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Kachaeva MV, Pilyo SG, Zhirnov VV, Brovarets VS. Synthesis, characterization, and in vitro anticancer evaluation of 2-substituted 5-arylsulfonyl-1,3-oxazole-4-carbonitriles. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2265-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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13
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Arshad M. Synthesis, Characterization, and Antimicrobial Assessment of Some Computationally Bioactive 1,2-Oxazole Derivatives. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218090207] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Moreno LM, Quiroga J, Abonia R, Ramírez-Prada J, Insuasty B. Synthesis of New 1,3,5-Triazine-Based 2-Pyrazolines as Potential Anticancer Agents. Molecules 2018; 23:E1956. [PMID: 30082588 PMCID: PMC6222643 DOI: 10.3390/molecules23081956] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/23/2018] [Accepted: 07/26/2018] [Indexed: 12/20/2022] Open
Abstract
A new series of 1,3,5-triazine-containing 2-pyrazoline derivatives (8⁻11)a⁻g was synthesized by cyclocondensation reactions of [(4,6-bis((2-hydroxyethyl)amino)-1,3,5-triazin-2-yl)amine]chalcones 7a⁻g with hydrazine hydrate and derivatives. Chalcones 7a⁻g were obtained by Claisen-Schmidt condensation between aromatic aldehydes and triazinic derivative 5, which was synthesized in high yield by a microwave-assisted reaction. Seventeen of the synthesized compounds were selected and tested by the US National Cancer Institute (NCI) for their anticancer activity against 58 different human tumor cell lines. Compounds 7g and 10d,e,g showed important GI50 values ranging from 0.569 to 16.6 µM and LC50 values ranging from 5.15 to >100 µM.
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Affiliation(s)
- Leydi M Moreno
- Heterocyclic Compounds Research Group, Department of Chemistry, Universidad del Valle, A.A. 25360 Cali, Colombia.
| | - Jairo Quiroga
- Heterocyclic Compounds Research Group, Department of Chemistry, Universidad del Valle, A.A. 25360 Cali, Colombia.
- Centre for Bioinformatics and Photonics-CIBioFI, Calle 13 No. 100-00, Edificio 320, No. 1069, A.A. 25360 Cali, Colombia.
| | - Rodrigo Abonia
- Heterocyclic Compounds Research Group, Department of Chemistry, Universidad del Valle, A.A. 25360 Cali, Colombia.
- Centre for Bioinformatics and Photonics-CIBioFI, Calle 13 No. 100-00, Edificio 320, No. 1069, A.A. 25360 Cali, Colombia.
| | - Jonathan Ramírez-Prada
- Heterocyclic Compounds Research Group, Department of Chemistry, Universidad del Valle, A.A. 25360 Cali, Colombia.
| | - Braulio Insuasty
- Heterocyclic Compounds Research Group, Department of Chemistry, Universidad del Valle, A.A. 25360 Cali, Colombia.
- Centre for Bioinformatics and Photonics-CIBioFI, Calle 13 No. 100-00, Edificio 320, No. 1069, A.A. 25360 Cali, Colombia.
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15
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El-Hiti GA, Abdel-Wahab BF, Khidre RE, Mostafa MS, Hegazy AS, Kariuki BM. 4-(4-Bromophenyl)-2-(3-(4-chlorophenyl)-5-{3-[5-methyl-1-(4-methylphenyl)-1 H-1,2,3-triazol-4-yl]-1-phenyl-1 H-pyrazol-4-yl}-4,5-dihydro-1 H-pyrazol-1-yl)-1,3-thiazole. IUCRDATA 2018. [DOI: 10.1107/s2414314618004431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The asymmetric unit of the title compound, C37H28BrClN8S, comprises one molecule. The molecule consists of two ring systems joined by a C—C bond between the dihydropyrazolyl and pyrazolyl rings of the two extended ring systems. The angles between adjacent ring planes of the tolyl–triazolyl–pyrazolyl–phenyl ring system are 48.2 (1), 12.3 (2) and 22.2 (2)°, respectively, with angles of 19.7 (1), 5.6 (2) and 0.9 (2)° between the rings of the chlorophenyl–thiazolyl–dihydropyrazolyl–bromophenyl set. The pyrazolyl and dihydropyrazolyl rings are inclined at 68.3 (1)° to one another. In the crystal, C—H...Cl interactions form chains of molecules parallel to theb-axis direction.
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16
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Synthesis, Characterization, and Antifungal Activity of Novel Benzo[4,5]imidazo[1,2-d][1,2,4]triazine Derivatives. Molecules 2018; 23:molecules23040746. [PMID: 29570685 PMCID: PMC6017302 DOI: 10.3390/molecules23040746] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 03/19/2018] [Accepted: 03/21/2018] [Indexed: 11/17/2022] Open
Abstract
A series of novel fused heterocyclic compounds bearing benzo[4,5]imidazo[1,2-d][1,2,4]triazine 4a–4w were designed and conveniently synthesized via the intermediates 2-(halogenated alkyl)-1H-benzo[d]imidazoles 2a, 2b, and 2-((1-(substituted phenyl)hydrazinyl)alkyl)-1H-benzo[d]imidazoles 3a–3g. The structures of all target compounds were characterized by FT-IR, 1H NMR, 13C NMR, and EI-MS, of which, the structure of compound 4n was further determined by the single crystal X-ray diffraction. The crystal structure of 4n was crystallized in the triclinic crystal system, space group P1¯ with a = 9.033 (6) Å, b = 10.136 (7) Å, c = 10.396 (7) Å, α = 118.323 (7)°, β = 91.750 (8)°, γ = 104.198 (7)°, Z = 2, V = 800.2 (9) Å3; total R indices: R1 = 0.0475, wR2 = 0.1284. The antifungal activity of title compounds 4a–4w in vitro against the phytopathogenic fungi Botrytis cinerea (B. cinerea), Rhizoctonia solani (R. solani) and Colletotrichum capsici (C. capsici) were evaluated, the bioassay results demonstrated that most of the title compounds exhibited obvious fungicidal activities at 50 μg/mL. This work indicated that benzo[4,5]imidazo[1,2-d][1,2,4]triazine derivatives could be considered as a new leading structure in searching for novel agricultural fungicides.
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17
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Mohamed TA, Hegazy MEF, Abd El Aty AA, Ghabbour HA, Alsaid MS, Shahat AA, Paré PW. Antimicrobial sesquiterpene lactones from Artemisia sieberi. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2017; 19:1093-1101. [PMID: 28361549 DOI: 10.1080/10286020.2017.1302939] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 03/02/2017] [Indexed: 06/07/2023]
Abstract
Two new sesquiterpene lactones 3R, 8R-dihydroxygermacr-4(15),9(10)-dien-6S,7S,11RH,12,6-olide (1) and 1R, 8S-dihydroxy-11R,13-dihydrobalchanin(2), together with two known compounds 11-epiartapshin (3) and 3'-hydroxygenkwanin (4), were isolated from Artemisia sieberi. Their structures were elucidated by 1D, 2D NMR, MS, and X-ray diffraction. Compound 4 inhibited Gram-positive bacteria Bacillus subtilis and Staphylococcus aureus with Minimal inhibitory concentration values of 50 and 25 μg/disk, respectively. All the isolated compounds exhibited moderate antifungal activities.
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Affiliation(s)
- Tarik A Mohamed
- a Phytochemistry Department , National Research Centre , Giza 12622 , Egypt
| | | | - Abeer A Abd El Aty
- b Chemistry of Natural and Microbial Products Department , National Research Centre , Giza 12622 , Egypt
| | - Hazem A Ghabbour
- c Department of Pharmaceutical Chemistry , College of Pharmacy, King Saud University , Riyadh 11451 , Saudi Arabia
- d Faculty of Pharmacy, Department of Medicinal Chemistry , University of Mansoura , Mansoura 35516 , Egypt
| | - Mansour S Alsaid
- e Pharmacognosy Department , College of Pharmacy, King Saud University , Riyadh 11451 , Saudi Arabia
| | - Abdelaaty A Shahat
- a Phytochemistry Department , National Research Centre , Giza 12622 , Egypt
- e Pharmacognosy Department , College of Pharmacy, King Saud University , Riyadh 11451 , Saudi Arabia
| | - Paul W Paré
- f Chemistry & Biochemistry Department , Texas Tech University , Lubbock , TX 79409 , USA
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Abdel-Aziem A, Baaiu BS, Abdelhamid AO. Synthesis and Evaluation of Antimicrobial Activity of Some Novel Heterocyclic Compounds from 5-Bromosalicylaldehyde. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2970] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Anhar Abdel-Aziem
- Department of Chemistry, Faculty of Science (Girls); Al-Azhar University; Nasr City Cairo 11754 Egypt
| | - Basma S. Baaiu
- Department of Chemistry, Faculty of Science; Benghazi University; Benghazi Libya
| | - Abdou O. Abdelhamid
- Department of Chemistry, Faculty of Science; Cairo University; Giza 12613 Egypt
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19
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Cascioferro S, Parrino B, Spanò V, Carbone A, Montalbano A, Barraja P, Diana P, Cirrincione G. An overview on the recent developments of 1,2,4-triazine derivatives as anticancer compounds. Eur J Med Chem 2017; 142:328-375. [PMID: 28851503 DOI: 10.1016/j.ejmech.2017.08.009] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 07/31/2017] [Accepted: 08/02/2017] [Indexed: 02/06/2023]
Abstract
The synthesis, the antitumor activity, the SAR and, whenever described, the possible mode of action of 1,2,4-triazine derivatives, their N-oxides, N,N'-dioxides as well as the benzo- and hetero-fused systems are reported. Herein are treated derivatives disclosed to literature from the beginning of this century up to 2016. Among the three possible triazine isomers, 1,2,4-triazines are the most studied ones and many derivatives having remarkable antitumor activity have been reported in the literature and also patented reaching advanced phases of clinical trials.
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Affiliation(s)
- Stella Cascioferro
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Barbara Parrino
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Virginia Spanò
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Anna Carbone
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Alessandra Montalbano
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Paola Barraja
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Patrizia Diana
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Girolamo Cirrincione
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Via Archirafi 32, 90123 Palermo, Italy.
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20
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Tiwari S, Pathak P, Pratap Singh K, Sagar R. One-pot two-step facile synthesis of 2,3,4,5-tetra substituted dihydrooxazoles and their antimicrobial activity. Bioorg Med Chem Lett 2017; 27:3802-3805. [DOI: 10.1016/j.bmcl.2017.06.062] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/01/2017] [Accepted: 06/23/2017] [Indexed: 11/28/2022]
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