1
|
Wang R, Stevaert A, Truong TN, Li Q, Krasniqi B, Van Loy B, Voet A, Naesens L, Dehaen W. Exploration of 1,2,3-triazolo fused triterpenoids as inhibitors of human coronavirus 229E targeting the viral nsp15 protein. Arch Pharm (Weinheim) 2024; 357:e2300442. [PMID: 37840345 DOI: 10.1002/ardp.202300442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/20/2023] [Accepted: 09/20/2023] [Indexed: 10/17/2023]
Abstract
The coronavirus disease-19 (COVID-19) pandemic has raised major interest in innovative drug concepts to suppress human coronavirus (HCoV) infections. We previously reported on a class of 1,2,3-triazolo fused betulonic acid derivatives causing strong inhibition of HCoV-229E replication via the viral nsp15 protein, which is proposedly related to compound binding at an intermonomer interface in hexameric nsp15. In the present study, we further explored the structure-activity relationship (SAR), by varying the substituent at the 1,2,3-triazolo ring as well as the triterpenoid skeleton. The 1,2,3-triazolo fused triterpenoids were synthesized by a multicomponent triazolization reaction, which has been developed in-house. Several analogs possessing a betulin, oleanolic acid, or ursolic acid core displayed favorable activity and selectivity (EC50 values for HCoV-229E: 1.6-3.5 μM), but neither of them proved as effective as the lead compound containing betulonic acid. The 18β-glycyrrhetinic acid-containing analogs had low selectivity. The antiviral findings were rationalized by in silico docking in the available structure of the HCoV-229E nsp15 protein. The new SAR insights will aid the further development of these 1,2,3-triazolo fused triterpenoid compounds as a unique type of coronavirus inhibitors.
Collapse
Affiliation(s)
- Rui Wang
- Department of Chemistry, Sustainable Chemistry for Metals and Molecules, KU Leuven, Leuven, Belgium
| | - Annelies Stevaert
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Tien Nguyen Truong
- Department of Chemistry, Biochemistry, Molecular and Structural Biology, KU Leuven, Leuven, Belgium
| | - Qifei Li
- Department of Chemistry, Sustainable Chemistry for Metals and Molecules, KU Leuven, Leuven, Belgium
| | - Besir Krasniqi
- Department of Chemistry, Sustainable Chemistry for Metals and Molecules, KU Leuven, Leuven, Belgium
| | - Benjamin Van Loy
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Arnout Voet
- Department of Chemistry, Biochemistry, Molecular and Structural Biology, KU Leuven, Leuven, Belgium
| | - Lieve Naesens
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Wim Dehaen
- Department of Chemistry, Sustainable Chemistry for Metals and Molecules, KU Leuven, Leuven, Belgium
| |
Collapse
|
2
|
Wang R, Krasniqi B, Li Y, Dehaen W. Triphenylphosphonium-linked derivative of allobetulin: preparation, anticancer properties and their mechanism of inhibiting SGC-7901 cells proliferation. Bioorg Chem 2022; 126:105853. [DOI: 10.1016/j.bioorg.2022.105853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 04/15/2022] [Accepted: 05/03/2022] [Indexed: 11/27/2022]
|
3
|
Abstract
1,2,3-triazoles represent a functional heterocyclic core that has been at the center of modern organic chemistry since the beginning of click chemistry. Being a versatile framework, such an aromatic ring can be observed in uncountable molecules useful in medicine and photochemistry, just to name a few. This review summarizes the progress achieved in their synthesis from 2015 to today, with particular emphasis on the development of new catalytic and eco-compatible approaches. In doing so, we subdivided the report based on their degree of functionalization and, for each subparagraph, we outlined the role of the catalyst employed.
Collapse
|
4
|
Wang R, Li Y, Hu H, Persoons L, Daelemans D, De Jonghe S, Luyten W, Krasniqi B, Dehaen W. Antibacterial and antitumoral properties of 1,2,3-triazolo fused triterpenes and their mechanism of inhibiting the proliferation of HL-60 cells. Eur J Med Chem 2021; 224:113727. [PMID: 34352711 DOI: 10.1016/j.ejmech.2021.113727] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 07/19/2021] [Accepted: 07/27/2021] [Indexed: 01/04/2023]
Abstract
Antimicrobial resistance and cancer are two important problems affecting human health. Actively developing novel antibiotics and anticancer medicines is a priority. Natural pentacyclic triterpenoids have attracted wide attention due to their significant biological activities. In this study, a series of 1,2,3-triazolo fused triterpenoids (betulin, oleanolic acid and ursolic acid) were functionalized on the A-ring by an in-house developed multi-component triazolization reaction. The compounds were investigated for antitumoral activity in twelve cancer cell lines and were also tested for antibacterial activity against four bacteria. In terms of anticancer effects, compounds 5b-f and 8a-d displayed strong cytotoxic activity in pancreatic adenocarcinoma (Capan-1), chronic myeloid leukemia (Hap-1), acute myeloid leukemia (HL-60), acute lymphoblastic leukemia (Jurkat) and non-Hodgkin lymphoma (Rec-1) cell lines. Among them, compound 5f exhibited the most potent antiproliferative effect on HL-60 cells. Further pharmacological research confirmed that compound 5f caused mitochondrial dysfunction and arrested the cell cycle in the G0/G1 phase to induce apoptosis of HL-60 cells. In addition, compound 5f also induced autophagy to inhibit the proliferation of HL-60 cells. Antibacterial screening revealed that compounds 2a-g and 5a-d showed modest activity against Gram-negative bacteria (Escherichia coli and Salmonella enterica subsp. enterica) with especially compounds 2c and 2d being potent inhibitors of Salmonella enterica subsp. enterica growth. Because of their promising anticancer and antibacterial activity, this series of compounds deserve further study.
Collapse
Affiliation(s)
- Rui Wang
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Yang Li
- Zhong Yuan Academy of Biological Medicine, Liaocheng People's Hospital, Liaocheng, 252000, PR China
| | - Haibo Hu
- Department of Biology, Animal Physiology and Neurobiology Section, KU Leuven, Naamsestraat 59, Box 2465, B-3000, Leuven, Belgium
| | - Leentje Persoons
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - Box 1043, B-3000, Leuven, Belgium
| | - Dirk Daelemans
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - Box 1043, B-3000, Leuven, Belgium
| | - Steven De Jonghe
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - Box 1043, B-3000, Leuven, Belgium
| | - Walter Luyten
- Department of Biology, Animal Physiology and Neurobiology Section, KU Leuven, Naamsestraat 59, Box 2465, B-3000, Leuven, Belgium
| | - Besir Krasniqi
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium.
| |
Collapse
|
5
|
Shiri P, Amani AM, Mayer-Gall T. A recent overview on the synthesis of 1,4,5-trisubstituted 1,2,3-triazoles. Beilstein J Org Chem 2021; 17:1600-1628. [PMID: 34354770 PMCID: PMC8290111 DOI: 10.3762/bjoc.17.114] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 06/29/2021] [Indexed: 12/20/2022] Open
Abstract
Diverse strategies for the efficient and attractive synthesis of a wide variety of relevant 1,4,5-trisubstituted 1,2,3-triazole molecules are reported. The synthesis of this category of diverse fully functionalized 1,2,3-triazoles has become a necessary and unique research subject in modern synthetic organic key transformations in academia, pharmacy, and industry. The current review aims to cover a wide literature survey of numerous synthetic strategies. Recent reports (2017–2021) in the field of 1,4,5-trisubstituted 1,2,3-triazoles are emphasized in this current review.
Collapse
Affiliation(s)
- Pezhman Shiri
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.,Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Mohammad Amani
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.,Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Thomas Mayer-Gall
- Department of Physical Chemistry and Center of Nanointegration (CENIDE), University of Duisburg-Essen, Universitätsstr. 2, 45141 Essen, Germany.,Deutsches Textilforschungszentrum Nord-West gGmbH, Adlerstr. 1, 47798 Krefeld, Germany
| |
Collapse
|
6
|
Stevaert A, Krasniqi B, Van Loy B, Nguyen T, Thomas J, Vandeput J, Jochmans D, Thiel V, Dijkman R, Dehaen W, Voet A, Naesens L. Betulonic Acid Derivatives Interfering with Human Coronavirus 229E Replication via the nsp15 Endoribonuclease. J Med Chem 2021; 64:5632-5644. [PMID: 33877845 PMCID: PMC8084268 DOI: 10.1021/acs.jmedchem.0c02124] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Indexed: 02/08/2023]
Abstract
To develop antiviral therapeutics against human coronavirus (HCoV) infections, suitable coronavirus drug targets and corresponding lead molecules must be urgently identified. Here, we describe the discovery of a class of HCoV inhibitors acting on nsp15, a hexameric protein component of the viral replication-transcription complexes, endowed with immune evasion-associated endoribonuclease activity. Structure-activity relationship exploration of these 1,2,3-triazolo-fused betulonic acid derivatives yielded lead molecule 5h as a strong inhibitor (antiviral EC50: 0.6 μM) of HCoV-229E replication. An nsp15 endoribonuclease active site mutant virus was markedly less sensitive to 5h, and selected resistance to the compound mapped to mutations in the N-terminal part of HCoV-229E nsp15, at an interface between two nsp15 monomers. The biological findings were substantiated by the nsp15 binding mode for 5h, predicted by docking. Hence, besides delivering a distinct class of inhibitors, our study revealed a druggable pocket in the nsp15 hexamer with relevance for anti-coronavirus drug development.
Collapse
Affiliation(s)
- Annelies Stevaert
- Laboratory of Virology and Chemotherapy,
Rega Institute, KU Leuven, 3000 Leuven,
Belgium
| | - Besir Krasniqi
- Molecular Design and Synthesis, Department of
Chemistry, KU Leuven, 3001 Leuven,
Belgium
| | - Benjamin Van Loy
- Laboratory of Virology and Chemotherapy,
Rega Institute, KU Leuven, 3000 Leuven,
Belgium
| | - Tien Nguyen
- Biochemistry, Molecular and Structural Biology,
Department of Chemistry, KU Leuven, 3001 Leuven,
Belgium
| | - Joice Thomas
- Molecular Design and Synthesis, Department of
Chemistry, KU Leuven, 3001 Leuven,
Belgium
| | - Julie Vandeput
- Laboratory of Virology and Chemotherapy,
Rega Institute, KU Leuven, 3000 Leuven,
Belgium
| | - Dirk Jochmans
- Laboratory of Virology and Chemotherapy,
Rega Institute, KU Leuven, 3000 Leuven,
Belgium
| | - Volker Thiel
- Institute of Virology and Immunology
(IVI), 3012 Bern and 3012 Bern, Switzerland
- Department of Infectious Diseases and Pathobiology,
Vetsuisse Faculty, University of Bern, 3012 Bern,
Switzerland
| | - Ronald Dijkman
- Institute of Virology and Immunology
(IVI), 3012 Bern and 3012 Bern, Switzerland
- Department of Infectious Diseases and Pathobiology,
Vetsuisse Faculty, University of Bern, 3012 Bern,
Switzerland
- Institute for Infectious Diseases (IFIK),
University of Bern, 3012 Bern,
Switzerland
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of
Chemistry, KU Leuven, 3001 Leuven,
Belgium
| | - Arnout Voet
- Biochemistry, Molecular and Structural Biology,
Department of Chemistry, KU Leuven, 3001 Leuven,
Belgium
| | - Lieve Naesens
- Laboratory of Virology and Chemotherapy,
Rega Institute, KU Leuven, 3000 Leuven,
Belgium
| |
Collapse
|
7
|
Pulikkal Veettil S, Pookkandam Parambil S, Van Hoof M, Dehaen W. A Multicomponent Approach toward Angularly Fused/Linear Bitriazoles: A Cascade Cornforth Rearrangement and Triazolization. J Org Chem 2021; 86:4346-4354. [PMID: 33577310 DOI: 10.1021/acs.joc.0c03014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A multicomponent reaction of triazoloketones, primary amines, and 4-nitrophenyl azide was developed for the synthesis of hitherto unknown angularly fused/linear bitriazoles. The two-stage mechanism was well proven by the isolation of the intermediate. This sequential reaction consists of Cornforth rearrangement and triazolization, which has also been demonstrated in a one-pot manner.
Collapse
Affiliation(s)
- Santhini Pulikkal Veettil
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Shandev Pookkandam Parambil
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Max Van Hoof
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| |
Collapse
|
8
|
Opsomer T, Dehaen W. Metal-free syntheses of N-functionalized and NH-1,2,3-triazoles: an update on recent developments. Chem Commun (Camb) 2021; 57:1568-1590. [PMID: 33491711 DOI: 10.1039/d0cc06654k] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An overview of the latest developments in the metal-free synthesis of non-benzo-fused N-functionalized and NH-1,2,3-triazoles is provided in this feature article. Synthetic studies that appeared from 2016 until August 2020 are organized according to a wide-ranging classification, comprising oxidative and eliminative azide-dipolarophile cycloadditions, diazo transfer reactions and N-tosylhydrazone-mediated syntheses. The newly developed methods constitute a significant contribution to the field of 1,2,3-triazole synthesis in terms of structural variation via either the exploration of novel reactions, or the exploitation of existing methodologies.
Collapse
Affiliation(s)
- Tomas Opsomer
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium.
| | | |
Collapse
|
9
|
Prakash R, Opsomer T, Dehaen W. Triazolization of Enolizable Ketones with Primary Amines: A General Strategy toward Multifunctional 1,2,3-Triazoles. CHEM REC 2020; 21:376-385. [PMID: 33350560 DOI: 10.1002/tcr.202000151] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 12/16/2022]
Abstract
The development of metal-free syntheses toward 1,2,3-triazoles has been a burgeoning research area throughout the past decade. Despite the numerous advances, the scarceness of methods for the preparation of 1,5-disubstituted 1,2,3-triazoles from readily available substrates remained a challenge that was addressed by our group in 2016. A metal-free three-component reaction, which we have dubbed the triazolization reaction, was established for the rapid synthesis of 1,5-disubstituted, fully functionalized and NH-1,2,3-triazoles. This novel approach stands out because it utilizes widely available starting materials, namely primary amines and enolizable ketones. Furthermore, the broad substrate scope is a major advantage, and was further expanded by the number of modified protocols that have been reported. Triazolization products have successfully found utility as intermediates in various synthetic transformations, and were the subject of a few interesting biological activity studies.
Collapse
Affiliation(s)
- Rashmi Prakash
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Tomas Opsomer
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| |
Collapse
|
10
|
Synthesis and Biological Evaluation of a Library of AGE‐Related Amino Acid Triazole Crosslinkers. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
11
|
Deng L, Liu Y, Zhu Y, Wan J. Transition‐Metal‐Free Annulation of Enamines and Tosyl Azide toward N‐Heterocycle Fused and 5‐Amino‐1,2,3‐Triazoles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000938] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Leiling Deng
- College of Chemistry and Chemical Engineering Jiangxi Normal University 330022 Nanchang P. R. China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering Jiangxi Normal University 330022 Nanchang P. R. China
| | - Yanping Zhu
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University 264005 Yantai P. R. China
| | - Jie‐Ping Wan
- College of Chemistry and Chemical Engineering Jiangxi Normal University 330022 Nanchang P. R. China
| |
Collapse
|
12
|
Guo N, Liu X, Xu H, Zhou X, Zhao H. A simple route towards the synthesis of 1,4,5-trisubstituted 1,2,3-triazoles from primary amines and 1,3-dicarbonyl compounds under metal-free conditions. Org Biomol Chem 2019; 17:6148-6152. [PMID: 31187848 DOI: 10.1039/c9ob01156k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An acetic acid-promoted approach that enables the synthesis of 1,4,5-trisubstituted 1,2,3-triazole derivatives has been achieved. This transformation employs readily available primary amines, 1,3-dicarbonyls and tosyl azide as the starting materials via a cycloaddition reaction under metal-free conditions. The reaction provides a simple access to fully substituted 1,2,3-triazoles from commercial substrates in moderate to excellent yields.
Collapse
Affiliation(s)
- Ningxin Guo
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China.
| | | | | | | | | |
Collapse
|
13
|
Gour J, Gatadi S, Akunuri R, Yaddanapudi MV, Nengroo MA, Datta D, Chopra S, Nanduri S. Catalyst-free facile synthesis of polycyclic indole/pyrrole substituted-1,2,3-triazoles. Org Biomol Chem 2019; 17:8153-8165. [PMID: 31460554 DOI: 10.1039/c9ob01560d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general and catalyst-free access to the fused polycyclic N-heterocycles via an intramolecular azide-alkene cascade reaction under mild reaction conditions has been developed. The reaction is applicable to both indole and pyrrole substrates, and a variety of substituents are tolerated. The entire sequence can be carried out in a one-pot operation. This methodology provides a sustainable and efficient access to a variety of novel polycyclic indole/pyrrole substituted-1,2,3-triazoles.
Collapse
Affiliation(s)
- Jitendra Gour
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | - Srikanth Gatadi
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | - Ravikumar Akunuri
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | | | - Mushtaq Ahmad Nengroo
- Biochemistry Division, CSIR-Central Drug Research Institute (CDRI), Lucknow 226031, India
| | - Dipak Datta
- Biochemistry Division, CSIR-Central Drug Research Institute (CDRI), Lucknow 226031, India
| | - Sidharth Chopra
- Division of Microbiology, CSIR-Central Drug Research Institute, Sitapur Road, Sector 10, Janakipuram Extension, Lucknow 226031, Uttar Pradesh, India
| | - Srinivas Nanduri
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| |
Collapse
|
14
|
Gour J, Gatadi S, Pooladanda V, Ghouse SM, Malasala S, Madhavi YV, Godugu C, Nanduri S. Facile synthesis of 1,2,3-triazole-fused indolo- and pyrrolo[1,4]diazepines, DNA-binding and evaluation of their anticancer activity. Bioorg Chem 2019; 93:103306. [PMID: 31586710 DOI: 10.1016/j.bioorg.2019.103306] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/17/2019] [Accepted: 09/19/2019] [Indexed: 12/09/2022]
Abstract
A facile synthetic strategy has been developed for the generation of structurally diverse N-fused heterocycles. The formation of fused 1,2,3-triazole indolo and pyrrolodiazepines proceeds through an initial Knoevenagel condensation followed by intramolecular azide-alkyne cycloaddition reaction at room temperature without recourse to the traditional Cu(I)-catalyzed azide-alkyne cycloadditions. The synthesized compounds were evaluated for their in vitro anti-cancer activity against the NCI 60 cell line panel. Among the tested compounds, 3a and 3h were found to exhibit potent inhibitory activity against many of the cell lines. Cell cycle analysis indicated that the compounds inhibit the cell cycle at sub G1 phase. The DNA- nano drop method, viscosity experiment and docking studies suggested these compounds possess DNA binding affinity.
Collapse
Affiliation(s)
- Jitendra Gour
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Srikanth Gatadi
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Venkatesh Pooladanda
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Shaik Mahammad Ghouse
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Satyaveni Malasala
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Y V Madhavi
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Chandraiah Godugu
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Srinivas Nanduri
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| |
Collapse
|
15
|
Vroemans R, Verhaegen Y, Dieu MTT, Dehaen W. Assembly of fully substituted triazolochromenes via a novel multicomponent reaction or mechanochemical synthesis. Beilstein J Org Chem 2018; 14:2689-2697. [PMID: 30410630 PMCID: PMC6204814 DOI: 10.3762/bjoc.14.246] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/08/2018] [Indexed: 12/28/2022] Open
Abstract
A new metal-free one-pot three-component procedure towards fully substituted triazolochromenes has been developed, starting from commercially available materials. Salicylaldehydes and nitroalkenes were reacted under solvent-free conditions, followed by a 1,3-dipolar cycloaddition of the intermediate 3-nitro-2H-chromenes with organic azides in a one-pot two-step sequence. The triazolochromenes were formed with complete regioselectivity and new biologically relevant structures were synthesized via extension of the developed procedure and via postfunctionalization. The mechanochemical synthesis was carried out for several salicylaldehydes and gave a clear improvement in the yield of the corresponding triazolochromenes and consequently showed to be a viable alternative for solid salicylaldehydes.
Collapse
Affiliation(s)
- Robby Vroemans
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Yenthel Verhaegen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - My Tran Thi Dieu
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
- The University of Danang, University of Science and Education, 459 Ton Duc Thang, Lien Chieu, Danang, Vietnam
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| |
Collapse
|