1
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Saini P, Bari SS, Thakur S, Garg A, Kumar S, Mandal SK, Bhalla A. Stereoselective synthesis, characterization and mechanistic insights of ortho-/ meta-/ para-(2-benzo[ d]oxazolyl)phenyl substituted trans-β-lactams: Potential synthons for variegated heterocyclic molecules. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2112606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Preety Saini
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | - S. S. Bari
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | - Shalu Thakur
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | - Ankita Garg
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | - Sandeep Kumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Punjab, India
| | - Sanjay K. Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Punjab, India
| | - Aman Bhalla
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India
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2
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Li Y, Cheng S, Tian Y, Zhang Y, Zhao Y. Recent ring distortion reactions for diversifying complex natural products. Nat Prod Rep 2022; 39:1970-1992. [PMID: 35972343 DOI: 10.1039/d2np00027j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: 2013-2022.Chemical diversification of natural products is an efficient way to generate natural product-like compounds for modern drug discovery programs. Utilizing ring-distortion reactions for diversifying natural products would directly alter the core ring systems of small molecules and lead to the production of structurally complex and diverse compounds for high-throughput screening. We review the ring distortion reactions recently used in complexity-to-diversity (CtD) and pseudo natural products (pseudo-NPs) strategies for diversifying complex natural products. The core ring structures of natural products are altered via ring expansion, ring cleavage, ring edge-fusion, ring spiro-fusion, ring rearrangement, and ring contraction. These reactions can rapidly provide natural product-like collections with properties suitable for a wide variety of biological and medicinal applications. The challenges and limitations of current ring distortion reactions are critically assessed, and avenues for future improvements of this rapidly expanding field are discussed. We also provide a toolbox for chemists for the application of ring distortion reactions to access natural product-like molecules.
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Affiliation(s)
- Yu Li
- School of Pharmacy, Nantong University, Nantong 226001, China.
| | - Shihao Cheng
- School of Pharmacy, Nantong University, Nantong 226001, China.
| | - Yun Tian
- School of Pharmacy, Nantong University, Nantong 226001, China.
| | - Yanan Zhang
- School of Pharmacy, Nantong University, Nantong 226001, China.
| | - Yu Zhao
- School of Pharmacy, Nantong University, Nantong 226001, China.
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3
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Borah G, Dam B, Patel BK. Ortho
‐Functionalization of Benzimidates and Benzamidines. ChemistrySelect 2022. [DOI: 10.1002/slct.202104583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gongutri Borah
- Department of Chemistry Indian Institute of Technology Guwahati, North Guwahati Guwahati 781039 Assam India
| | - Binoyargha Dam
- Department of Chemistry Indian Institute of Technology Guwahati, North Guwahati Guwahati 781039 Assam India
| | - Bhisma K. Patel
- Department of Chemistry Indian Institute of Technology Guwahati, North Guwahati Guwahati 781039 Assam India
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4
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Krasavin M, Peshkov AA, Makhmet A, Bakulina O, Kanov E, Gainetdinov R, Peshkov VA, Dar’in D. A General Approach to Spirocyclic Piperidines via Castagnoli–Cushman Chemistry. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0040-1719878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractUnsaturated spirocyclic lactams stemming from a variant of the three-component Castagnoli–Cushman reaction successfully underwent hydrogenation to enable access to fully saturated spirocyclic lactams. The subsequent lactam reduction gave rise to 2-spiro piperidine building blocks. The latter can be further elaborated in compound libraries and, on their own, show propensity to activate trace amine-associated receptor 1 (TAAR1), an important target for CNS disease.
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Affiliation(s)
- Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University
- Immanuel Kant Baltic Federal University
| | | | - Azat Makhmet
- Institute of Chemistry, Saint Petersburg State University
- L. N. Gumilyov Eurasian National University, Department of Chemistry, Faculty of Natural Sciences
| | - Olga Bakulina
- Institute of Chemistry, Saint Petersburg State University
| | - Evgeny Kanov
- Institute of Translational Biomedicine, St. Petersburg State University
| | - Raul Gainetdinov
- Institute of Translational Biomedicine, St. Petersburg State University
| | - Vsevolod A. Peshkov
- Nazarbayev University, Department of Chemistry, School of Sciences and Humanities
| | - Dmitry Dar’in
- Institute of Chemistry, Saint Petersburg State University
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5
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Liang P, Zhao H, Zhou T, Zeng K, Jiao W, Pan Y, Liu Y, Fang D, Ma X, Shao H. Rapid Oxidation Indoles into 2‐Oxindoles Mediated by PIFA in Combination with
n
‐Bu
4
NCl ⋅ H
2
O. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100234] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Peng Liang
- Natural Products Research Centre, Chengdu Institute of Biology Chinese Academy of Sciences 610041 Chengdu People's Republic of China
- School of Chemical Engineering, Institute of Pharmaceutical Engineering Technology and Application, Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education Sichuan University of Science & Engineering Xueyuan Street 180, Huixing Road Zigong Sichuan 643000 People's Republic of China
| | - Hang Zhao
- School of Chemical Engineering, Institute of Pharmaceutical Engineering Technology and Application, Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education Sichuan University of Science & Engineering Xueyuan Street 180, Huixing Road Zigong Sichuan 643000 People's Republic of China
| | - Tingting Zhou
- School of Chemical Engineering, Institute of Pharmaceutical Engineering Technology and Application, Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education Sichuan University of Science & Engineering Xueyuan Street 180, Huixing Road Zigong Sichuan 643000 People's Republic of China
| | - Kaiyun Zeng
- School of Chemical Engineering, Institute of Pharmaceutical Engineering Technology and Application, Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education Sichuan University of Science & Engineering Xueyuan Street 180, Huixing Road Zigong Sichuan 643000 People's Republic of China
| | - Wei Jiao
- Natural Products Research Centre, Chengdu Institute of Biology Chinese Academy of Sciences 610041 Chengdu People's Republic of China
| | - Yang Pan
- Natural Products Research Centre, Chengdu Institute of Biology Chinese Academy of Sciences 610041 Chengdu People's Republic of China
| | - Yazhou Liu
- Natural Products Research Centre, Chengdu Institute of Biology Chinese Academy of Sciences 610041 Chengdu People's Republic of China
| | - Dongmei Fang
- Natural Products Research Centre, Chengdu Institute of Biology Chinese Academy of Sciences 610041 Chengdu People's Republic of China
| | - Xiaofeng Ma
- Natural Products Research Centre, Chengdu Institute of Biology Chinese Academy of Sciences 610041 Chengdu People's Republic of China
| | - Huawu Shao
- Natural Products Research Centre, Chengdu Institute of Biology Chinese Academy of Sciences 610041 Chengdu People's Republic of China
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6
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Fraňová P, Marchalín Š, Šafář P, Cvečko M, Moncol J, Žídeková I, Othman M, Daïch A. Smart and concise entry to chiral spiro[cyclopentane-indolizidine]-tetraol diastereomers as a new aza-spirocyclic framework. NEW J CHEM 2021. [DOI: 10.1039/d1nj02180j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of chiral oxacarba-spiroindolizidine tetraols was achieved by alkene cis-dihydroxylation, diol protection, and lactam carbonyl reduction followed ultimately by acetonide deprotection.
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Affiliation(s)
- Paula Fraňová
- Department of Organic Chemistry, Faculty of Chemical & Food Technology, Slovak University of Technology, Radlinského 9, SK-81237 Bratislava, Slovakia
| | - Štefan Marchalín
- Department of Organic Chemistry, Faculty of Chemical & Food Technology, Slovak University of Technology, Radlinského 9, SK-81237 Bratislava, Slovakia
- Normandie Univ, UNILEHAVRE, URCOM EA 3221, INC3M CNRS-FR 3038, UFR des Sciences et Techniques, Université Le Havre Normandie, BP: 1123, 25 rue Philipe Lebon, F-76063 Le Havre Cedex, France
| | - Peter Šafář
- Department of Organic Chemistry, Faculty of Chemical & Food Technology, Slovak University of Technology, Radlinského 9, SK-81237 Bratislava, Slovakia
| | - Matej Cvečko
- Department of Organic Chemistry, Faculty of Chemical & Food Technology, Slovak University of Technology, Radlinského 9, SK-81237 Bratislava, Slovakia
| | - Ján Moncol
- Department of Inorganic Chemistry, Faculty of Chemical & Food Technology, Slovak University of Technology, Radlinského 9, SK-81237, Bratislava, Slovakia
| | - Ivana Žídeková
- Central Laboratories, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, SK – 81237 Bratislava, Slovakia
| | - Mohamed Othman
- Normandie Univ, UNILEHAVRE, URCOM EA 3221, INC3M CNRS-FR 3038, UFR des Sciences et Techniques, Université Le Havre Normandie, BP: 1123, 25 rue Philipe Lebon, F-76063 Le Havre Cedex, France
| | - Adam Daïch
- Normandie Univ, UNILEHAVRE, URCOM EA 3221, INC3M CNRS-FR 3038, UFR des Sciences et Techniques, Université Le Havre Normandie, BP: 1123, 25 rue Philipe Lebon, F-76063 Le Havre Cedex, France
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7
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Gataullin RR. Advances in the Synthesis of Benzo‐Fused Spiro Nitrogen Heterocycles: New Approaches and Modification of Old Strategies. Helv Chim Acta 2020. [DOI: 10.1002/hlca.202000137] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Rail R. Gataullin
- Ufa Federal Research Centre Ufa Institute of Chemistry of the Russian Academy of Sciences Prospect Oktyabrya, 71 Ufa 450054 Russian Federation
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8
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Wang M, Tseng P, Chi W, Suresh S, Edukondalu A, Chen Y, Lin W. Diversity‐Oriented Synthesis of Spirocyclohexene Indane‐1,3‐diones and Coumarin‐Fused Cyclopentanes via an Organobase‐Controlled Cascade Reaction. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000597] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Min Wang
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
| | - Ping‐Yao Tseng
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
| | - Woei‐Jye Chi
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
| | - Sundaram Suresh
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
| | - Athukuri Edukondalu
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
| | - Yi‐Ru Chen
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
| | - Wenwei Lin
- Department of ChemistryNational Taiwan Normal University, 88, Sec. 4 Tingchow Road Taipei 11677 Taiwan
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10
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Kavetsou E, Katopodi A, Argyri L, Chainoglou E, Pontiki E, Hadjipavlou-Litina D, Chroni A, Detsi A. Novel 3-aryl-5-substituted-coumarin analogues: Synthesis and bioactivity profile. Drug Dev Res 2020; 81:456-469. [PMID: 31943295 DOI: 10.1002/ddr.21639] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 12/02/2019] [Accepted: 12/28/2019] [Indexed: 12/19/2022]
Abstract
Eighteen 3-aryl-5-substituted-coumarins-six 5-acetyloxy-derivatives, six 5-hydroxy-derivatives, and six 5-geranyloxy-derivatives-were synthesized, structurally characterized and their antioxidant activity, lipoxygenase inhibitory ability, as well as their cytotoxic activity against human neuroblastoma SK-N-SH and HeLa adenocarcinoma cell lines were evaluated. The 5-acetyloxy-compounds 3a-3f were found to be the best cytotoxic agents among all the compounds studied. The bromo-substituted coumarins 3a and 3b were remarkably active against HeLa cell line showing IC50 1.8 and 6.1 μM, respectively. Coumarin 5e possessing a geranyloxy-chain on position 5 of the coumarin scaffold presented dual bioactivity, while 5-geranyloxy-coumarin 5f was the most competent soybean lipoxygenase inhibitor of this series (IC50 10 μM). As shown by in silico docking studies, the studied molecules present allosteric interactions with soybean lipoxygenases.
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Affiliation(s)
- Eleni Kavetsou
- Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| | - Annita Katopodi
- Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Athens, Greece.,Institute of Biosciences and Applications, National Centre for Scientific Research "Demokritos", Athens, Greece
| | - Letta Argyri
- Institute of Biosciences and Applications, National Centre for Scientific Research "Demokritos", Athens, Greece
| | - Eirini Chainoglou
- Laboratory of Pharmaceutical Chemistry, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Eleni Pontiki
- Laboratory of Pharmaceutical Chemistry, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Dimitra Hadjipavlou-Litina
- Laboratory of Pharmaceutical Chemistry, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Angeliki Chroni
- Institute of Biosciences and Applications, National Centre for Scientific Research "Demokritos", Athens, Greece
| | - Anastasia Detsi
- Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
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11
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Sachdeva T, Low ML, Mai C, Cheong SL, Liew YK, Milton MD. Design, Synthesis and Characterisation of Novel Phenothiazine‐Based Triazolopyridine Derivatives: Evaluation of Anti‐Breast Cancer Activity on Human Breast Carcinoma. ChemistrySelect 2019. [DOI: 10.1002/slct.201903203] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
| | - May Lee Low
- Department of Pharmaceutical ChemistrySchool of PharmacyInternational Medical University, No. 126 Jalan Jalil Perkasa 19, Bukit Jalil 57000 Kuala Lumpur Malaysia
| | - Chun‐Wai Mai
- Department of Pharmaceutical ChemistrySchool of PharmacyInternational Medical University, No. 126 Jalan Jalil Perkasa 19, Bukit Jalil 57000 Kuala Lumpur Malaysia
- Center for Cancer and Stem Cell ResearchInstitute for Research, Development and InnovationInternational Medical University, No. 126 Jalan Jalil Perkasa 19, Bukit Jalil 57000 Kuala Lumpur Malaysia
| | - Siew Lee Cheong
- Department of Pharmaceutical ChemistrySchool of PharmacyInternational Medical University, No. 126 Jalan Jalil Perkasa 19, Bukit Jalil 57000 Kuala Lumpur Malaysia
| | - Yun Khoon Liew
- Department of Life SciencesSchool of PharmacyInternational Medical University, No. 126, Jalan Jalil Perkasa 19, Bukit Jalil 57000 Kuala Lumpur Malaysia
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12
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Chauhan D, Hati S, Priyadarshini R, Sen S. Transcriptome analysis predicts mode of action of benzimidazole molecules against
Staphylococcus aureus
UAMS‐1. Drug Dev Res 2019; 80:490-503. [DOI: 10.1002/ddr.21523] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 01/23/2019] [Accepted: 01/26/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Deepika Chauhan
- Department of Life Science, School of Natural SciencesShiv Nadar University Dadri Uttar Pradesh India
| | - Santanu Hati
- Department of Chemistry, School of Natural SciencesShiv Nadar University Dadri Uttar Pradesh India
- Department of Medicinal Chemistry, College of PharmacyUniversity of Florida Gainesville Florida
| | - Richa Priyadarshini
- Department of Life Science, School of Natural SciencesShiv Nadar University Dadri Uttar Pradesh India
| | - Subhabrata Sen
- Department of Chemistry, School of Natural SciencesShiv Nadar University Dadri Uttar Pradesh India
- Department of ChemistrySRM University Amaravati Andhra Pradesh India
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Abstract
The past decades have witnessed rapid development in organic synthesis via catalysis, particularly the reactions through C–H bond functionalization. Transition metals such as Pd, Rh and Ru constitute a crucial catalyst in these C–H bond functionalization reactions. This process is highly attractive not only because it saves reaction time and reduces waste,but also, more importantly, it allows the reaction to be performed in a highly region specific manner. Indeed, several organic compounds could be readily accessed via C–H bond functionalization with transition metals. In the recent past, tremendous progress has been made on C–H bond functionalization via ruthenium catalysis, including less expensive but more stable ruthenium(II) catalysts. The ruthenium-catalysed C–H bond functionalization, viz. arylation, alkenylation, annulation, oxygenation, and halogenation involving C–C, C–O, C–N, and C–X bond forming reactions, has been described and presented in numerous reviews. This review discusses the recent development of C–H bond functionalization with various ruthenium-based catalysts. The first section of the review presents arylation reactions covering arylation directed by N–Heteroaryl groups, oxidative arylation, dehydrative arylation and arylation involving decarboxylative and sp3-C–H bond functionalization. Subsequently, the ruthenium-catalysed alkenylation, alkylation, allylation including oxidative alkenylation and meta-selective C–H bond alkylation has been presented. Finally, the oxidative annulation of various arenes with alkynes involving C–H/O–H or C–H/N–H bond cleavage reactions has been discussed.
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15
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Ben Jamaa A, Grellepois F. Diastereoselective Ritter-like Reaction on Cyclic Trifluoromethylated N,O-Acetals Derived from l-Tartaric Acid. J Org Chem 2017; 82:10360-10375. [PMID: 28885838 DOI: 10.1021/acs.joc.7b01814] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Despite the presence of the highly electron-withdrawing fluorinated substituent, cyclic α-trifluoromethylated N-acyliminium ions were successfully generated from fluorinated O-acetyl-N,O-acetal l-tartaric acid derivatives. The addition of nitriles on these intermediates occurred with high to excellent syn diastereoselectivity and led, in most cases, to oxazolines and amides as single diastereomers. The diastereoselectivity of the addition and the nature of the reaction product depend on the substituents on the hydroxyl groups of the tartaric acid scaffold. This methodology gave access to enantiopure, highly functionalized 5-(trifluoromethyl)pyrrolidin-2-one derivatives, bearing the fluorinated substituent on a tetrasubstituted carbon.
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Affiliation(s)
- Abdelkhalek Ben Jamaa
- Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims , CNRS UMR 7312, UFR des Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex 2, France
| | - Fabienne Grellepois
- Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims , CNRS UMR 7312, UFR des Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex 2, France
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Ramu D, Garg S, Ayana R, Keerthana AK, Sharma V, Saini CP, Sen S, Pati S, Singh S. Novel β-carboline-quinazolinone hybrids disrupt Leishmania donovani redox homeostasis and show promising antileishmanial activity. Biochem Pharmacol 2016; 129:26-42. [PMID: 28017772 DOI: 10.1016/j.bcp.2016.12.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 12/13/2016] [Indexed: 10/20/2022]
Abstract
Visceral Leishmaniasis is a deadly parasitic disease caused by Leishmania donovani. Paucity exists in the discovery of novel chemotherapeutics against Leishmaniasis. In this study, we synthesized a natural product inspired Diversity Oriented Synthesis library of L. donovani Trypanothione reductase (LdTR) inhibitor β-carboline-quinazolinone hybrids, which are different in stereochemical architecture and diverse in the bioactive chemical space. It is noteworthy that chirality affects drug-to-protein binding affinity since proteins in any living system are present only in one of the chiral forms. Upon evaluation of the hybrids, one of the chiral forms i.e. Compound 1 showed profound cytotoxic effect in micromolar range as compared to its other chiral form i.e. Compound 2. In-silico docking studies confirmed high binding efficiency of Compound 1 with the catalytic pocket of LdTR. Treatment of L. donovani parasites with Compound 1 inhibits LdTR activity, induces imbalance in redox homeostasis by enhancing ROS, disrupts the mitochondrial membrane potential, modifies actin polymerization and alters the surface topology and architecture. All these cellular modifications eventually led to apoptosis-like death of promastigotes. Furthermore, we synthesized the analogues of Compound 1 and found that these compounds show profound antileishmanial activity in the nanomolar range both in promastigotes and intracellular amastigotes. The enhanced inhibitory potential of these compounds was further supported by in-silico analysis of protein-ligand interactions which revealed high binding efficiency towards the catalytic pocket of LdTR. Taken together, this study reports the serendipitous discovery of β-carboline-quinazolinone hybrids with enhanced antileishmanial activity along with the in-depth structure-activity relationships and mechanism of action of these analogues.
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Affiliation(s)
- Dandugudumula Ramu
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, India
| | - Swati Garg
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, India
| | - R Ayana
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, India
| | - A K Keerthana
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, India
| | - Vijeta Sharma
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, India
| | - C P Saini
- Department of Physics, School of Natural Sciences, Shiv Nadar University, India
| | - Subhabrata Sen
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, India
| | - Soumya Pati
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, India
| | - Shailja Singh
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, India; Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, India.
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Dighe SU, Mahar R, Shukla SK, Kant R, Srivastava K, Batra S. Synthesis of S-(-)-5,6-Dihydrocanthin-4-ones via a Triple Cooperative Catalysis-Mediated Domino Reaction. J Org Chem 2016; 81:4751-61. [PMID: 27159615 DOI: 10.1021/acs.joc.6b00613] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An enantioselective synthesis of S-(-)-5,6-dihydrocanthin-4-ones via a triple cooperative catalysis-mediated domino reaction having a broad substrate scope is reported. The reaction between substituted 1-formyl-9H-β-carbolines and terminal alkynes in the presence of catalytic amounts of Jorgensen-Hayashi catalyst, copper iodide, and Hunig base proceeded via a multicascade route, affording the title compounds in good yields and excellent ees with interesting mechanistic features. These compounds were assessed for in vitro antiplasmodial activity against P. falciparum strains. Additionally, 5,6-dihydrocanthin-4-ones are demonstrated to be a versatile precursor to different fused β-carboline derivatives via simple synthetic transformations.
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Affiliation(s)
| | | | - Sanjeev K Shukla
- Academy of Scientific and Innovative Research , New Delhi 110025, India
| | | | - Kumkum Srivastava
- Academy of Scientific and Innovative Research , New Delhi 110025, India
| | - Sanjay Batra
- Academy of Scientific and Innovative Research , New Delhi 110025, India
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J. N. Veerman J, G. Bursavich M, B. Bruseker Y, C. J. van Esseveldt B, Glen R, A. Harrison B, H. Heijne E, J. McRiner A, M. Meulemans T, van Rijnsbergen P, Zonneveld W, A. Burnett D. Strategic and Tactical Approaches to the Synthesis of 5,6-Dihydro-[1,2,4]oxadiazines. HETEROCYCLES 2016. [DOI: 10.3987/com-16-13570] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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