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Balakrishnan MH, Sureshbabu P, Korivi R, Mannathan S. Regioselective Synthesis of 3-Substituted Isocoumarin-1-imines via Palladium-Catalyzed Denitrogenative Transannulation of 1,2,3-Benzotriazin-4(3H)-ones and Terminal Alkynes. Chem Asian J 2023; 18:e202300726. [PMID: 37711073 DOI: 10.1002/asia.202300726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 09/16/2023]
Abstract
A palladium-catalyzed denitrogenative transannulation strategy to access various 3-substituted isocoumarin-1-imine frameworks using 1,2,3-benzotriazin-4(3H)-ones and terminal alkynes is described. The reaction is highly regioselective and tolerates a wide range of functional groups. The reaction is believed to proceed via a five-membered palladacycle intermediate extruding environmentally benign molecular nitrogen as a by-product. The utility of this method was showcased through the one-pot synthesis of biologically relevant 3-substituted isocoumarin scaffolds.
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Affiliation(s)
- Madasamy Hari Balakrishnan
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | - Popuri Sureshbabu
- Department of Chemistry, SRM University AP, Amaravati, Andhra Pradesh, 522502, India
| | - Ramaraju Korivi
- Department of Chemistry, SRM University AP, Amaravati, Andhra Pradesh, 522502, India
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2
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Patel SK, Kolte K, Savani CJ, Raghavaiah P, Dave D, Isab AA, Mistry D, Suthar D, Singh VK. New Series of MII-dithiocarbamate complexes (M = CuII, NiII and ZnII) holding pendant N,O-Schiff base moieties: Synthesis, characterization, photophysical, crystallographic, anti-microbial and DFT study. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Babu S, Nagarajan SK, Sathish S, Negi VS, Sohn H, Madhavan T. Identification of Potent and Selective JAK1 Lead Compounds Through Ligand-Based Drug Design Approaches. Front Pharmacol 2022; 13:837369. [PMID: 35529449 PMCID: PMC9068899 DOI: 10.3389/fphar.2022.837369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 03/07/2022] [Indexed: 01/06/2023] Open
Abstract
JAK1 plays a significant role in the intracellular signaling by interacting with cytokine receptors in different types of cells and is linked to the pathogenesis of various cancers and in the pathology of the immune system. In this study, ligand-based pharmacophore modeling combined with virtual screening and molecular docking methods was incorporated to identify the potent and selective lead compounds for JAK1. Initially, the ligand-based pharmacophore models were generated using a set of 52 JAK1 inhibitors named C-2 methyl/hydroxyethyl imidazopyrrolopyridines derivatives. Twenty-seven pharmacophore models with five and six pharmacophore features were generated and validated using potency and selectivity validation methods. During potency validation, the Guner-Henry score was calculated to check the accuracy of the generated models, whereas in selectivity validation, the pharmacophore models that are capable of identifying selective JAK1 inhibitors were evaluated. Based on the validation results, the best pharmacophore models ADHRRR, DDHRRR, DDRRR, DPRRR, DHRRR, ADRRR, DDHRR, and ADPRR were selected and taken for virtual screening against the Maybridge, Asinex, Chemdiv, Enamine, Lifechemicals, and Zinc database to identify the new molecules with novel scaffold that can bind to JAK1. A total of 4,265 hits were identified from screening and checked for acceptable drug-like properties. A total of 2,856 hits were selected after ADME predictions and taken for Glide molecular docking to assess the accurate binding modes of the lead candidates. Ninety molecules were shortlisted based on binding energy and H-bond interactions with the important residues of JAK1. The docking results were authenticated by calculating binding free energy for protein–ligand complexes using the MM-GBSA calculation and induced fit docking methods. Subsequently, the cross-docking approach was carried out to recognize the selective JAK1 lead compounds. Finally, top five lead compounds that were potent and selective against JAK1 were selected and validated using molecular dynamics simulation. Besides, the density functional theory study was also carried out for the selected leads. Through various computational studies, we observed good potency and selectivity of these lead compounds when compared with the drug ruxolitinib. Compounds such as T5923555 and T5923531 were found to be the best and can be further validated using in vitro and in vivo methods.
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Affiliation(s)
- Sathya Babu
- Computational Biology Lab, Department of Genetic Engineering, School of Bioengineering, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, India
| | - Santhosh Kumar Nagarajan
- Computational Biology Lab, Department of Genetic Engineering, School of Bioengineering, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, India
| | - Sruthy Sathish
- Computational Biology Lab, Department of Genetic Engineering, School of Bioengineering, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, India
| | - Vir Singh Negi
- Department of Clinical Immunology, Jawaharlal Institute of Post-Graduate Medical Education and Research, Pondicherry, India
| | - Honglae Sohn
- Department of Chemistry and Department of Carbon Materials, Chosun University, Gwangju, South Korea
- *Correspondence: Thirumurthy Madhavan, ; Honglae Sohn,
| | - Thirumurthy Madhavan
- Computational Biology Lab, Department of Genetic Engineering, School of Bioengineering, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, India
- *Correspondence: Thirumurthy Madhavan, ; Honglae Sohn,
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Bhosle SD, Itage SV, Gangapuram B, Eppa G, Bhosale RS, Yadav JS. Review of Synthetic Approaches toward the Synthesis of Cariprazine, an Antipsychotic Drug. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Siddhanath D. Bhosle
- Department of Chemistry, School of Science, Indrashil University Rajpur, Mehsana 382715, India
| | - Shivanand V. Itage
- Department of Chemistry, School of Science, Indrashil University Rajpur, Mehsana 382715, India
| | - Balraju Gangapuram
- Department of Chemistry, School of Science, Indrashil University Rajpur, Mehsana 382715, India
| | - Gyanchander Eppa
- Department of Chemistry, School of Science, Indrashil University Rajpur, Mehsana 382715, India
| | - Rajesh S. Bhosale
- Department of Chemistry, School of Science, Indrashil University Rajpur, Mehsana 382715, India
| | - Jhillu Singh Yadav
- Department of Chemistry, School of Science, Indrashil University Rajpur, Mehsana 382715, India
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An account of synthetic strategies towards indolocarbazole alkaloids: Arcyriaflavin A and staurosporinone. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kant R, Maji S. Recent advances in the synthesis of piperazine based ligands and metal complexes and their applications. Dalton Trans 2021; 50:785-800. [PMID: 33416816 DOI: 10.1039/d0dt03569f] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The piperazine scaffold is a privileged structure frequently found in biologically active compounds. Piperazine nucleus is found in many marketed drugs in the realm of antidepressants (amoxapine), antipsychotics (bifeprunox), antihistamines (cyclizine and oxatomide), antifungals (itraconazole), antibiotics (ciprofloxacin), etc. This is one of the reasons why piperazine based compounds are gaining prominence in today's research. In addition to the ring carbons, substitution in the nitrogen atom of piperazine not only creates potential drug molecules but also makes it unique with versatile binding possibilities with metal ions. Piperazine ring-based compounds find their application in biological systems with antihistamine, anticancer, antimicrobial and antioxidant properties. They have also been successfully used in the field of catalysis and metal organic frameworks (MOFs). The present review focuses on the synthesis and application of different piperazine derivatives and their metal complexes having diverse applications.
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Affiliation(s)
- Rishi Kant
- School of Chemical Engineering and Physical Sciences, Lovely Professional University, Punjab 144411, India.
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Sari S, Yilmaz M. Synthesis, characterization, acetylcholinesterase inhibition, and molecular docking studies of new piperazine substituted dihydrofuran compounds. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02599-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Are peptides a solution for the treatment of hyperactivated JAK3 pathways? Inflammopharmacology 2019; 27:433-452. [PMID: 30929155 DOI: 10.1007/s10787-019-00589-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 03/18/2019] [Indexed: 01/10/2023]
Abstract
While the inactivation mutations that eliminate JAK3 function lead to the immunological disorders such as severe combined immunodeficiency, activation mutations, causing constitutive JAK3 signaling, are known to trigger various types of cancer or are responsible for autoimmune diseases, such as rheumatoid arthritis, psoriasis, or inflammatory bowel diseases. Treatment of hyperactivated JAK3 is still an obstacle, due to different sensibility of mutation types to conventional drugs and unwanted side effects, because these drugs are not absolutely specific for JAK3, thus inhibiting other members of the JAK family, too. Lack of information, in which way sole inhibition of JAK3 is necessary for elimination of the disease, calls for the development of isoform-specific JAK3 inhibitors. Beside this strategy, up to date peptides are a rising alternative as chemo- or immunotherapeutics, but still sparsely represented in drug development and clinical trials. Beyond a possible direct inhibition function, crossing the cancer cell membrane and interfering in disease-causing pathways or triggering apoptosis, peptides could be used in future as adjunct remedies to potentialize traditional therapy and preserve non-affected cells. To discuss such feasible topics, this review deals with the knowledge about the structure-function of JAK3 and the actual state-of-the-art of isoform-specific inhibitor development, as well as the function of currently approved drugs or those currently being tested in clinical trials. Furthermore, several strategies for the application of peptide-based drugs for cancer therapy and the physicochemical and structural relations to peptide efficacy are discussed, and an overview of peptide sequences, which were qualified for clinical trials, is given.
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Abstract
Natural products (NPs) are important sources of clinical drugs due to their structural diversity and biological prevalidation. However, the structural complexity of NPs leads to synthetic difficulties, unfavorable pharmacokinetic profiles, and poor drug-likeness. Structural simplification by truncating unnecessary substructures is a powerful strategy for overcoming these limitations and improving the efficiency and success rate of NP-based drug development. Herein, we will provide a comprehensive review of the structural simplification of NPs with a focus on design strategies, case studies, and new technologies. In particular, a number of successful examples leading to marketed drugs or drug candidates will be discussed in detail to illustrate how structural simplification is applied in lead optimization of NPs.
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Affiliation(s)
- Shengzheng Wang
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai , 200433 , P.R. China.,Department of Medicinal Chemistry, School of Pharmacy , Fourth Military Medical University , 169 Changle West Road , Xi'an , 710032 , P.R. China
| | - Guoqiang Dong
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai , 200433 , P.R. China
| | - Chunquan Sheng
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai , 200433 , P.R. China
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Molecular dynamics and integrated pharmacophore-based identification of dual [Formula: see text] inhibitors. Mol Divers 2017; 22:95-112. [PMID: 29138965 DOI: 10.1007/s11030-017-9794-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Accepted: 10/24/2017] [Indexed: 12/14/2022]
Abstract
Despite increase in the understanding of the pathogenesis of rheumatoid arthritis (RA), it remains a tough challenge. The advent of kinases involved in key intracellular pathways in pathogenesis of RA may provide a new phase of drug discovery for RA. The present study is aimed to identify dual JAK3/[Formula: see text] inhibitors by developing an optimum pharmacophore model integrating the information revealed by ligand-based pharmacophore models and structure-based pharmacophore models (SBPMs). For JAK3 inhibitors, the addition of an aromatic ring feature and for [Formula: see text] the addition of a hydrophobic feature proposed by SBPMs lead to five-point pharmacophore (i.e., AADHR.54 (JAK3)) and six-point pharmacophore (i.e., AAAHRR.45 ([Formula: see text])). The obtained pharmacophores were validated and used for virtual screening and then for docking-based screening. Molecules were further evaluated for ADME properties, and their docked protein complexes were subjected to MM-GBSA energy calculations and molecular dynamic simulations. The top two hit compounds with novel scaffolds 2-oxo-1,2-dihydroquinoline and benzo[d]oxazole showed inhibitory activity for JAK3 and [Formula: see text].
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Newton AS, Deiana L, Puleo DE, Cisneros JA, Cutrona KJ, Schlessinger J, Jorgensen WL. JAK2 JH2 Fluorescence Polarization Assay and Crystal Structures for Complexes with Three Small Molecules. ACS Med Chem Lett 2017. [PMID: 28626520 DOI: 10.1021/acsmedchemlett.7b00154] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
A competitive fluorescence polarization (FP) assay is reported for determining binding affinities of probe molecules with the pseudokinase JAK2 JH2 allosteric site. The syntheses of the fluorescent 5 and 6 used in the assay are reported as well as Kd results for 10 compounds, including JNJ7706621, NVP-BSK805, and filgotinib (GLPG0634). X-ray crystal structures of JAK2 JH2 in complex with NVP-BSK805, filgotinib, and diaminopyrimidine 8 elucidate the binding poses.
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Affiliation(s)
- Ana S. Newton
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - Luca Deiana
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - David E. Puleo
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520-8066, United States
| | - José A. Cisneros
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - Kara J. Cutrona
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - Joseph Schlessinger
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520-8066, United States
| | - William L. Jorgensen
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
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12
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Tuncer S, Kaya K, Özçeşmeci İ, Burat AK. Non-peripherally tetrasubstituted phthalocyanines: Synthesis, characterization and, photophysical investigation. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.11.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Kaur M, Silakari O. Ligand-based and e-pharmacophore modeling, 3D-QSAR and hierarchical virtual screening to identify dual inhibitors of spleen tyrosine kinase (Syk) and janus kinase 3 (JAK3). J Biomol Struct Dyn 2016; 35:3043-3060. [PMID: 27678281 DOI: 10.1080/07391102.2016.1240108] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The clinical efficacy of multiple kinase inhibitors has caught the interest of Pharmaceutical and Biotech researchers to develop potential drugs with multi-kinase inhibitory activity for complex diseases. In the present work, we attempted to identify dual inhibitors of spleen tyrosine kinase (Syk) and janus kinase 3 (JAK3), keys players in immune signaling, by developing ideal pharmacophores integrating Ligand-based pharmacophore models (LBPMs) and Structure-based pharmacophore models (SBPMs), thereby projecting the optimum pharmacophoric required for inhibition of both the kinases. The four point LBPM; ADPR.14 suggested the presence of one hydrogen bond acceptor, one hydrogen bond donor, one positive ionizable, and one ring aromatic feature for Syk inhibitory activity and AADH.54 proposed the necessity of two hydrogen bond acceptor, one hydrogen bond donor, and one hydrophobic feature for JAK3 inhibitory activity. To our interest, SBPMs identified additional ring aromatic features required for inhibition of both the kinases. For Syk inhibitory activity, the hydrogen bond acceptor feature indicated by LBPM was devoid of forming hydrogen bonding interaction with the hinge region amino acid residue (Ala451). Thus merging the information revealed by both LBPMs and SBPMs, ideal pharmacophore models i.e. ADPRR.14 (Syk) and AADHR.54 (JAK3) were generated. These models after rigorous statistical validation were used for screening of Asinex database. The systematic virtual screening protocol, including pharmacophore and docking-based screening, ADME property, and MM-GBSA energy calculations, retrieved final 10 hits as dual inhibitors of Syk and JAK3. Final 10 hits thus obtained can aid in the development of potential therapeutic agents for autoimmune disorders. Also the top two hits were evaluated against both the enzymes.
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Affiliation(s)
- Maninder Kaur
- a Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research , Punjabi University , Patiala , Punjab 147002 , India
| | - Om Silakari
- a Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research , Punjabi University , Patiala , Punjab 147002 , India
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Bajusz D, Ferenczy GG, Keserű GM. Discovery of Subtype Selective Janus Kinase (JAK) Inhibitors by Structure-Based Virtual Screening. J Chem Inf Model 2015; 56:234-47. [DOI: 10.1021/acs.jcim.5b00634] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Dávid Bajusz
- Medicinal Chemistry Research
Group, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2., Budapest 1117, Hungary
| | - György G. Ferenczy
- Medicinal Chemistry Research
Group, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2., Budapest 1117, Hungary
| | - György M. Keserű
- Medicinal Chemistry Research
Group, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2., Budapest 1117, Hungary
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Giraud F, Bourhis M, Ebrahimi E, Herfindal L, Choudhury RR, Bjørnstad R, Døskeland SO, Anizon F, Moreau P. Synthesis and activities of new indolopyrrolobenzodiazepine derivatives toward acute myeloid leukemia cells. Bioorg Med Chem 2015; 23:7313-23. [DOI: 10.1016/j.bmc.2015.10.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 10/15/2015] [Accepted: 10/22/2015] [Indexed: 01/10/2023]
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Raju P, Gobi Rajeshwaran G, Mohanakrishnan AK. Synthetic Studies on Indolocarbazoles: A Facile Synthesis of Staurosporinone Analogues. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500939] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Kaur N. Greener and Expeditious Synthesis of Fused Six-Membered N,N-Heterocycles Using Microwave Irradiation. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2013.828236] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, Rajasthan, India
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18
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Kaur N. Synthesis of Five-Membered N,N,N- and N,N,N,N-Heterocyclic Compounds: Applications of Microwaves. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2013.828756] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, Rajasthan, India
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Kaur N. Applications of Microwaves in the Synthesis of Polycyclic Six-Membered N,N-Heterocycles. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2013.828755] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, Rajasthan, India
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, Rajasthan, India
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21
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, Rajasthan, India
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Kaur N. Insight into Microwave-Assisted Synthesis of Benzo Derivatives of Five-Membered N,N-Heterocycles. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2013.827725] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, Rajasthan, India
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Kaur N. Environmentally Benign Synthesis of Five-Membered 1,3-N,N-Heterocycles by Microwave Irradiation. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2013.825808] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, Rajasthan, India
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Kaur N. Recent Impact of Microwave-Assisted Synthesis on Benzo Derivatives of Five-Membered N-Heterocycles. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2013.824983] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, Rajasthan, India
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, Rajasthan, India
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Kaur N. Advances in Microwave-Assisted Synthesis for Five-Membered N-Heterocycle Synthesis. SYNTHETIC COMMUN 2014. [DOI: 10.1080/00397911.2013.824982] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, Rajasthan, India
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Kaur N. Review of Microwave-Assisted Synthesis of Benzo-Fused Six-MemberedN,N-Heterocycles. SYNTHETIC COMMUN 2014. [DOI: 10.1080/00397911.2013.816736] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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28
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Kaur N. Role of Microwaves in the Synthesis of Fused Five-Membered Heterocycles with Three N-Heteroatoms. SYNTHETIC COMMUN 2014. [DOI: 10.1080/00397911.2013.824981] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, India
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Kaur N. Application of Microwave Irradiation in the Synthesis of Fused Six-Membered Heterocycles with N-Heteroatom. SYNTHETIC COMMUN 2014. [DOI: 10.1080/00397911.2013.816734] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Navjeet Kaur
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
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Kaur N. Six-Membered Heterocycles with Three and Four N-Heteroatoms: Microwave-Assisted Synthesis. SYNTHETIC COMMUN 2014. [DOI: 10.1080/00397911.2013.813550] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Navjeet Kaur
- a Department of Chemistry , Banasthali University , Banasthali , India
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Mohan CD, Bharathkumar H, Bulusu KC, Pandey V, Rangappa S, Fuchs JE, Shanmugam MK, Dai X, Li F, Deivasigamani A, Hui KM, Kumar AP, Lobie PE, Bender A, Basappa, Sethi G, Rangappa KS. Development of a novel azaspirane that targets the Janus kinase-signal transducer and activator of transcription (STAT) pathway in hepatocellular carcinoma in vitro and in vivo. J Biol Chem 2014; 289:34296-307. [PMID: 25320076 DOI: 10.1074/jbc.m114.601104] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Signal transducer and activator of transcription 3 (STAT3) is a transcription factor that regulates genes involved in cell growth, proliferation, and survival, and given its association with many types of cancers, it has recently emerged as a promising target for therapy. In this work, we present the synthesis of N-substituted azaspirane derivatives and their biological evaluation against hepatocellular carcinoma (HCC) cells (IC50 = 7.3 μm), thereby identifying 2-(1-(4-(2-cyanophenyl)1-benzyl-1H-indol-3-yl)-5-(4-methoxy-phenyl)-1-oxa-3-azaspiro(5,5) undecane (CIMO) as a potent inhibitor of the JAK-STAT pathway with selectivity over normal LO2 cells (IC50 > 100 μm). The lead compound, CIMO, suppresses proliferation of HCC cells and achieves this effect by reducing both constitutive and inducible phosphorylation of JAK1, JAK2, and STAT3. Interestingly, CIMO displayed inhibition of Tyr-705 phosphorylation, which is required for nuclear translocation of STAT3, but it has no effect on Ser-727 phosphorylation. CIMO accumulates cancer cells in the sub-G1 phase and decreases STAT3 in the nucleus and thereby causes down-regulation of genes regulated via STAT3. Suppression of STAT3 phosphorylation by CIMO and knockdown of STAT3 mRNA using siRNA transfection displayed a similar effect on the viability of HCC cells. Furthermore, CIMO significantly decreased the tumor development in an orthotopic HCC mouse model through the modulation of phospho-STAT3, Ki-67, and cleaved caspase-3 in tumor tissues. Thus, CIMO represents a chemically novel and biologically in vitro and in vivo validated compound, which targets the JAK-STAT pathway as a potential cancer treatment.
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Affiliation(s)
| | - Hanumantharayappa Bharathkumar
- the Laboratory of Chemical Biology, Department of Chemistry, Bangalore University, Central College Campus, Palace Road, Bangalore 560001, India
| | - Krishna C Bulusu
- the Centre for Molecular Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Vijay Pandey
- the Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599
| | - Shobith Rangappa
- the Frontier Research Center for Post-genome Science and Technology Hokkaido University, Japan
| | - Julian E Fuchs
- the Centre for Molecular Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Muthu K Shanmugam
- the Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore, and
| | - Xiaoyun Dai
- the Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore, and
| | - Feng Li
- the Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore, and
| | - Amudha Deivasigamani
- the Division of Cellular and Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre, Singapore 169610, Singapore
| | - Kam M Hui
- the Division of Cellular and Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre, Singapore 169610, Singapore
| | - Alan Prem Kumar
- the Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, the Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore, and
| | - Peter E Lobie
- the Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, the Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore, and
| | - Andreas Bender
- the Centre for Molecular Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Basappa
- the Laboratory of Chemical Biology, Department of Chemistry, Bangalore University, Central College Campus, Palace Road, Bangalore 560001, India,
| | - Gautam Sethi
- the Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore, and
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van Loon AA, Holton MK, Downey C, White TM, Rolph CE, Bruening SR, Li G, Delaney KM, Pelkey SJ, Pelkey ET. Preparation of dibenzo[e,g]isoindol-1-ones via Scholl-type oxidative cyclization reactions. J Org Chem 2014; 79:8049-58. [PMID: 25138638 PMCID: PMC4156242 DOI: 10.1021/jo501185f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Indexed: 01/08/2023]
Abstract
A flexible synthesis of dibenzo[e,g]isoindol-1-ones has been developed. Dibenzo[e,g]isoindol-1-ones represent simplified benzenoid analogues of biological indolo[2,3-a]pyrrolo[3,4-c]carbazol-5-ones (indolocarbazoles), compounds that have demonstrated a wide range of biological activity. The synthesis of the title compounds involved tetramic acid sulfonates. Different aryl groups were introduced at C4 of the heterocyclic ring via Suzuki-Miyaura cross-coupling reactions. Finally, mild Scholl-type oxidative cyclizations mediated by phenyliodine(III) bis(trifluoroacetate) (PIFA) converted some of the latter compounds into the corresponding dibenzo[e,g]isoindol-1-ones. A systematic study of the oxidative cyclization revealed the following reactivity trend: 3,4-dimethoxyphenyl ≫ 3-methoxyphenyl > 3,4,5-trimethoxyphenyl > 4-methoxyphenyl ≈ phenyl. Overall, the oxidative cyclization required at least two methoxy groups distributed in the aromatic rings, at least one of which had to be located para to the site of the cyclization.
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Affiliation(s)
- Amy A. van Loon
- Department of Chemistry, Hobart and William
Smith Colleges, Geneva, New York 14456, United
States
| | - Maeve K. Holton
- Department of Chemistry, Hobart and William
Smith Colleges, Geneva, New York 14456, United
States
| | - Catherine
R. Downey
- Department of Chemistry, Hobart and William
Smith Colleges, Geneva, New York 14456, United
States
| | - Taryn M. White
- Department of Chemistry, Hobart and William
Smith Colleges, Geneva, New York 14456, United
States
| | - Carly E. Rolph
- Department of Chemistry, Hobart and William
Smith Colleges, Geneva, New York 14456, United
States
| | - Stephen R. Bruening
- Department of Chemistry, Hobart and William
Smith Colleges, Geneva, New York 14456, United
States
| | - Guanqun Li
- Department of Chemistry, Hobart and William
Smith Colleges, Geneva, New York 14456, United
States
| | - Katherine M. Delaney
- Department of Chemistry, Hobart and William
Smith Colleges, Geneva, New York 14456, United
States
| | - Sarah J. Pelkey
- Department of Chemistry, Hobart and William
Smith Colleges, Geneva, New York 14456, United
States
| | - Erin T. Pelkey
- Department of Chemistry, Hobart and William
Smith Colleges, Geneva, New York 14456, United
States
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Affiliation(s)
- Navjeet Kaur
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
| | - Dharma Kishore
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
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Affiliation(s)
- Navjeet Kaur
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
| | - Dharma Kishore
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
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Jan KC, Yang BB, Liu TC. Gene expression profiling of sesaminol triglucoside and its tetrahydrofuranoid metabolites in primary rat hepatocytes. Int J Food Sci Nutr 2014; 65:981-8. [PMID: 25156454 DOI: 10.3109/09637486.2014.950204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Sesaminol triglucoside is a major lignin in sesame meal and has a methylenedioxyphenyl group and multiple functions in vivo. As a tetrahydrofurofuran type lignan, sesaminol triglucoside is metabolized to mammalian lignans. This investigation studies the effect of sesaminol triglucoside and its tetrahydrofuranoid metabolites (sesaminol, 2-episesaminol, hydroxymethyl sesaminol-tetrahydrofuran, enterolactone, and enterodiol) on gene expression in primary rat hepatocytes using a DNA microarray. Sesame lignans significantly affected the expression of xenobiotic-induced transcripts of cytochrome P450, solute carrier (SLC), and ATP-binding cassette (ABC) transporters. Changes in gene expression were generally greater in response to metabolites with methylenedioxyphenyl moieties (sesaminol triglucoside, sesaminol, and 2-episesaminol) than to the tetrahydrofuranoid metabolites (hydroxymethyl sesaminol-tetrahydrofuran, enterolactone, and enterodiol). Tetrahydrofuran lignans, such as sesaminol triglucoside, sesamin, hydroxymethyl sesaminol-tetrahydrofuran, and sesaminol changed the expression of ABC transporters.
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Affiliation(s)
- Kuo-Ching Jan
- Food Industry Research & Development Institute , Hsinchu , Taiwan and
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Sathe RY, Kulkarni SA, Sella RN, Madhavan T. Computational identification of JAK2 inhibitors: a combined pharmacophore mapping and molecular docking approach. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1223-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Kaur N, Kishore D. Microwave-Assisted Synthesis of Seven- and Higher-Membered O-Heterocycles. SYNTHETIC COMMUN 2014. [DOI: 10.1080/00397911.2013.796382] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Navjeet Kaur
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
| | - Dharma Kishore
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
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42
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Probe staurosporine drug binding site on protein kinase by PFSC. Chem Res Chin Univ 2014. [DOI: 10.1007/s40242-014-3550-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kaur N, Kishore D. Microwave-Assisted Synthesis of Seven- and Higher-Membered N-Heterocycles. SYNTHETIC COMMUN 2014. [DOI: 10.1080/00397911.2013.783922] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Navjeet Kaur
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
| | - Dharma Kishore
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
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Affiliation(s)
- Navjeet Kaur
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
| | - Dharma Kishore
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
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Kaur N. Benign Approaches for the Microwave-assisted Synthesis of Five-membered 1,2-N,N-heterocycles. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2129] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry; Banasthali University; Banasthali 304022 Rajasthan India
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Gabr MT, El-Gohary NS, El-Bendary ER, El-Kerdawy MM. Structure-based drug design and biological evaluation of 2-acetamidobenzothiazole derivative as EGFR kinase inhibitor. J Enzyme Inhib Med Chem 2014; 30:160-5. [DOI: 10.3109/14756366.2014.887707] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Microwave-assisted synthesis of five-membered S-heterocycles. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0325-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Menet CJ, Rompaey LV, Geney R. Advances in the discovery of selective JAK inhibitors. PROGRESS IN MEDICINAL CHEMISTRY 2013; 52:153-223. [PMID: 23384668 DOI: 10.1016/b978-0-444-62652-3.00004-1] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
In this review, we describe the current knowledge of the biology of the JAKs. The JAK family comprises the four nonreceptor tyrosine kinases JAK1, JAK2, JAK3, and Tyk2, all key players in the signal transduction from cytokine receptors to transcription factor activation. We also review the progresses made towards the optimization of JAK inhibitors and the importance of their selectivity profile. Indeed, the full array of many medicinal chemistry enabling tools (HTS, X-ray crystallography, scaffold morphing, etc.) has been deployed to successfully design molecules that discriminate among JAK family and other kinases. While the first JAK inhibitor was launched in 2011, this review also summarizes the status of several other small-molecule JAK inhibitors currently in development to treat arthritis, psoriasis, organ rejection, and multiple cancer types.
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Sharma A, Appukkuttan P, Van der Eycken E. Microwave-assisted synthesis of medium-sized heterocycles. Chem Commun (Camb) 2011; 48:1623-37. [PMID: 22031184 DOI: 10.1039/c1cc15238f] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of new strategies for synthesis of medium-sized heterocycles has remained a highly attractive but challenging proposition. In the last few years, the application of microwave irradiation has greatly facilitated the construction of such heterocyclic ring systems through a myriad of different synthetic approaches. This feature article illustrates the progress made in the microwave-assisted synthesis of medium-sized heterocycles with an emphasis on examples describing the use of a dedicated microwave synthesizer.
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Affiliation(s)
- Abhishek Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
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50
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AUDocker LE: A GUI for virtual screening with AUTODOCK Vina. BMC Res Notes 2011; 4:445. [PMID: 22026969 PMCID: PMC3214202 DOI: 10.1186/1756-0500-4-445] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Accepted: 10/25/2011] [Indexed: 11/10/2022] Open
Abstract
Background AUTODOCK Vina is an open-source program which is steadfast and authentic to perform docking simulations. Though, Auto Dock Tools can help perform docking simulations with Vina, it largely remains as a platform for docking single molecule at a time. Findings "AUDocker LE" is designed with an aim to develop a software tool as a front end graphical interface with C# language to perform docking experiments in Windows based computers. It helps users to perform automated continuous docking of large ligand databases into a set of predefined protein targets. It will also help the user to analyze the results to select promising lead molecules. Conclusion AUDocker LE provides a straight forward graphical interface which can be used in a standard personal computer with Microsoft Windows XP or Windows 7 as the operating system where Autodock Vina, Python 2.5 and .net frame work are preinstalled.
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