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McTiernan TJ, Diaz DB, Saunders GJ, Sprang F, Yudin AK. Navigating complex peptide structures using macrocycle conformational maps. RSC Chem Biol 2022; 3:739-747. [PMID: 35755184 PMCID: PMC9175111 DOI: 10.1039/d2cb00016d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 04/14/2022] [Indexed: 11/21/2022] Open
Abstract
Identification of turn motifs that are stabilized by intramolecular hydrogen bonds can be useful in describing the conformation of peptide systems. However, this approach is somewhat insufficient for cyclic peptides because peptide regions that are not positioned within a hydrogen bond can be left with no description. Furthermore, non-regular secondary structures and other rarely-observed conformations can be left without detailed evaluation. Herein, we describe “higher-order” ϕ/ψ plots termed macrocycle conformational maps (MCMs) as a tool for evaluating and comparing the conformations of a series of structurally related macrocyclic peptides. Identification of turn motifs that are stabilized by hydrogen bonds can be useful in describing the conformation of peptides. Herein, we describe “higher-order” ϕ/ψ plots termed macrocycle conformational maps (MCMs) as a tool to evaluate and compare the conformations of related macrocycles.![]()
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Affiliation(s)
- Timothy J McTiernan
- Davenport Research Laboratories, Department of Chemistry, University of Toronto Toronto ON M5S 3H6 Canada
| | - Diego B Diaz
- Davenport Research Laboratories, Department of Chemistry, University of Toronto Toronto ON M5S 3H6 Canada
| | - George J Saunders
- Davenport Research Laboratories, Department of Chemistry, University of Toronto Toronto ON M5S 3H6 Canada
| | - Fiona Sprang
- Davenport Research Laboratories, Department of Chemistry, University of Toronto Toronto ON M5S 3H6 Canada
| | - Andrei K Yudin
- Davenport Research Laboratories, Department of Chemistry, University of Toronto Toronto ON M5S 3H6 Canada
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2
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Shukla AK, Shrivash MK, Pandey A, Pandey J. Synthesis, in vitro and computational studies of novel glycosyl-1, 2, 3-1H-triazolyl methyl benzamide derivatives as potential α-glucosidase inhibitory activity. Bioorg Chem 2021; 109:104687. [PMID: 33601140 DOI: 10.1016/j.bioorg.2021.104687] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/22/2020] [Accepted: 01/21/2021] [Indexed: 10/22/2022]
Abstract
A series of novel glycosyl-1,2,3-1H-triazolyl methyl benzamide analogues were synthesized by the unambiguous strategy and evaluated for α-glucosidase inhibitory activity. Glycosyl benzamide exhibited a dose-dependent inhibition of α-glucosidase activity. The In-vitro α-glucosidase inhibition activity results indicated that all the synthesized triazolyl methyl benzamide compounds (IC50 values ranging from 25.3 ± 0.8 to 118.5 ± 5.3 μM) exhibited more inhibitory activity in comparison with the standard drug acarbose (IC50 = 750.0 ± 12.5 μM). Among all, the 3 deacetylated glycosyl methyl benzamide derivatives (4c, 4d and 4f) showed promising α-glucosidase enzyme inhibitory activities with IC50 value 25.3 ± 0.8, 26.1 ± 1.5 and 30.6 ± 2.1 respectively. Furthermore, these compounds were subjected to molecular docking and molecular dynamics simulation studies. The molecular docking studies were performed between (PDB ID: 3A4A) target protein and these synthesized molecules. The compounds displayed good docking energies in the range of -7.5 to -7.8 Kcal/mol. This work could be used as an initial approach in identifying potential novel molecules with the promising activity of type-2 diabetes mellitus.
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Affiliation(s)
- Akhilesh Kumar Shukla
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University, Lucknow, Uttar Pradesh 226025, India
| | - Manoj Kumar Shrivash
- Department of Applied Sciences, Indian Institute Information Technology Allahabad, India; Special Centre for Molecular Medicine, JNU, New Delhi 110067, India
| | - Anwesh Pandey
- Special Centre for Molecular Medicine, JNU, New Delhi 110067, India
| | - Jyoti Pandey
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University, Lucknow, Uttar Pradesh 226025, India.
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3
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Singh K, Tripathi RP. An Overview on Glyco-Macrocycles: Potential New Lead and their Future in Medicinal Chemistry. Curr Med Chem 2020; 27:3386-3410. [PMID: 30827227 DOI: 10.2174/0929867326666190227232721] [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: 07/10/2018] [Revised: 02/08/2019] [Accepted: 02/14/2019] [Indexed: 12/18/2022]
Abstract
Macrocycles cover a small segment of molecules with a vast range of biological activity in the chemotherapeutic world. Primarily, the natural sources derived from macrocyclic drug candidates with a wide range of biological activities are known. Further evolutions of the medicinal chemistry towards macrocycle-based chemotherapeutics involve the functionalization of the natural product by hemisynthesis. More recently, macrocycles based on carbohydrates have evolved a considerable interest among the medicinal chemists worldwide. Carbohydrates provide an ideal scaffold to generate chiral macrocycles with well-defined pharmacophores in a decorated fashion to achieve the desired biological activity. We have given an overview on carbohydrate-derived macrocycle involving their synthesis in drug design and discovery and potential role in medicinal chemistry.
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Affiliation(s)
- Kartikey Singh
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, U.P., India
| | - Rama Pati Tripathi
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, U.P., India.,National Institute of Pharmaceutical Education and Research Raebareli, New Transit Campus, Bijnor Road, Sarojani Nagar Near CRPF Base Camp, Lucknow 226002, U.P., India
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4
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Appavoo SD, Huh S, Diaz DB, Yudin AK. Conformational Control of Macrocycles by Remote Structural Modification. Chem Rev 2019; 119:9724-9752. [DOI: 10.1021/acs.chemrev.8b00742] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Solomon D. Appavoo
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario, Canada M5S 3H6
| | - Sungjoon Huh
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario, Canada M5S 3H6
| | - Diego B. Diaz
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario, Canada M5S 3H6
| | - Andrei K. Yudin
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario, Canada M5S 3H6
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5
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Chen CC, Wang SF, Su YY, Lin YA, Lin PC. Copper(I)-Mediated Denitrogenative Macrocyclization for the Synthesis of Cyclic α3
β-Tetrapeptide Analogues. Chem Asian J 2017; 12:1326-1337. [DOI: 10.1002/asia.201700339] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 03/23/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Chun-Chi Chen
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Sheng-Fu Wang
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Yung-Yu Su
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Yuya A. Lin
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
| | - Po-Chiao Lin
- Department of Chemistry; Nation Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
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6
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Ramakrishna KKG, Thakur RK, Pasam VR, Pandey J, Mahar R, Shukla SK, Tamrakar AK, Tripathi RP. Synthesis of novel glycosyl-1,2,3-1H-triazolyl methyl quinazolin-4(3H)-ones and their effect on GLUT4 translocation. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.11.074] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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7
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Sunkari YK, Alam F, Kandiyal PS, Aloysius S, Ampapathi RS, Chakraborty TK. Influence of Linker Length on Conformational Preferences of Glycosylated Sugar Amino Acid Foldamers. Chembiochem 2016; 17:1839-1844. [DOI: 10.1002/cbic.201600386] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Indexed: 01/12/2023]
Affiliation(s)
- Yashoda Krishna Sunkari
- Department of Organic Chemistry; Indian Institute of Science, CV Raman Road; Bengaluru 560012 India
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road; Lucknow 226031 India
| | - Faiyaz Alam
- Centre for Nuclear Magnetic Resonance; SAIF; CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road; Lucknow 226031 India
| | - Pancham Singh Kandiyal
- Centre for Nuclear Magnetic Resonance; SAIF; CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road; Lucknow 226031 India
| | - Siriwardena Aloysius
- Laboratoire des Glucides (UMR 6912); CNRS-FRE-3517; Universit de Picardie Jules Verne, 33, Rue St Leu, Faculte des Sciences; Amiens 80039 France
| | - Ravi Sankar Ampapathi
- Centre for Nuclear Magnetic Resonance; SAIF; CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road; Lucknow 226031 India
| | - Tushar Kanti Chakraborty
- Department of Organic Chemistry; Indian Institute of Science, CV Raman Road; Bengaluru 560012 India
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road; Lucknow 226031 India
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8
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Nemmara VV, Nicholas RA, Pratt RF. Synthesis and Kinetic Analysis of Two Conformationally Restricted Peptide Substrates of Escherichia coli Penicillin-Binding Protein 5. Biochemistry 2016; 55:4065-76. [PMID: 27420403 DOI: 10.1021/acs.biochem.6b00576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Escherichia coli PBP5 (penicillin-binding protein 5) is a dd-carboxypeptidase involved in bacterial cell wall maturation. Beyond the C-terminal d-alanyl-d-alanine moiety, PBP5, like the essential high-molecular mass PBPs, has little specificity for other elements of peptidoglycan structure, at least as elicited in vitro by small peptidoglycan fragments. On the basis of the crystal structure of a stem pentapeptide derivative noncovalently bound to E. coli PBP6 (Protein Data Bank entry 3ITB ), closely similar in structure to PBP5, we have modeled a pentapeptide structure at the active site of PBP5. Because the two termini of the pentapeptide are directed into solution in the PBP6 crystal structure, we then modeled a 19-membered cyclic peptide analogue by cross-linking the terminal amines by succinylation. An analogous smaller, 17-membered cyclic peptide, in which the l-lysine of the original was replaced by l-diaminobutyric acid, could also be modeled into the active site. We anticipated that, just as the reactivity of stem peptide fragments of peptidoglycan with PBPs in vivo may be entropically enhanced by immobilization in the polymer, so too would that of our cyclic peptides with respect to their acyclic analogues in vitro. This paper describes the synthesis of the peptides described above that were required to examine this hypothesis and presents an analysis of their structures and reaction kinetics with PBP5.
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Affiliation(s)
- Venkatesh V Nemmara
- Department of Chemistry, Wesleyan University , Lawn Avenue, Middletown, Connecticut 06459, United States
| | - Robert A Nicholas
- Department of Pharmacology, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-7365, United States
| | - R F Pratt
- Department of Chemistry, Wesleyan University , Lawn Avenue, Middletown, Connecticut 06459, United States
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9
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Pal S, Singh G, Singh S, Tripathi JK, Ghosh JK, Sinha S, Ampapathi RS, Chakraborty TK. Tetrahydrofuran amino acid-containing gramicidin S analogues with improved biological profiles. Org Biomol Chem 2015; 13:6789-802. [DOI: 10.1039/c5ob00622h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Replacement of thed-Phe-Pro units of GS with novel C6-Bn-substituted tetrahydrofuran amino acid minimized its cytotoxicity while preserving its antimicrobial activity, with a few analogs showing selective anti-TB activity as well.
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Affiliation(s)
- Sudip Pal
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Gajendra Singh
- Centre for Nuclear Magnetic Resonance
- SAIF
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Shyam Singh
- Biochemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Jitendra Kumar Tripathi
- Molecular and Structural Biology Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Jimut Kanti Ghosh
- Molecular and Structural Biology Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Sudhir Sinha
- Biochemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Ravi Sankar Ampapathi
- Centre for Nuclear Magnetic Resonance
- SAIF
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Tushar Kanti Chakraborty
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
- Department of Organic Chemistry
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10
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Lalitha K, Muthusamy K, Prasad YS, Vemula PK, Nagarajan S. Recent developments in β-C-glycosides: synthesis and applications. Carbohydr Res 2014; 402:158-71. [PMID: 25498016 DOI: 10.1016/j.carres.2014.10.008] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 10/11/2014] [Accepted: 10/16/2014] [Indexed: 11/26/2022]
Abstract
In the last few years, considerable progress has been made in the synthesis of C-glycosides. Despite its challenging chemistry, due to its versatility, C-glycosides play a pivotal role in developing novel materials, surfactants and bioactive molecules. In this review, we present snapshots of various synthetic methodologies developed for C-glycosides in the recent years and the potential application of C-glycosides derived from β-C-glycosidic ketones.
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Affiliation(s)
- Krishnamoorthy Lalitha
- Organic Synthesis Group, Department of Chemistry and the Centre for Nanotechnology and Advanced Biomaterials, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613401, Tamil Nadu, India
| | - Kumarasamy Muthusamy
- Organic Synthesis Group, Department of Chemistry and the Centre for Nanotechnology and Advanced Biomaterials, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613401, Tamil Nadu, India
| | - Y Siva Prasad
- Organic Synthesis Group, Department of Chemistry and the Centre for Nanotechnology and Advanced Biomaterials, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613401, Tamil Nadu, India
| | - Praveen Kumar Vemula
- Technologies for the Advancement of Science, Institute for Stem Cell Biology and Regenerative Medicine (inStem), National Centre for Biological Sciences, UAS-GKVK Post, Bellary Road, Bangalore 560065, India
| | - Subbiah Nagarajan
- Organic Synthesis Group, Department of Chemistry and the Centre for Nanotechnology and Advanced Biomaterials, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613401, Tamil Nadu, India.
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11
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Singh G, Ghosh U, Pal S, Ampapathi RS, Chakraborty TK. βγ-fused turn structures in sugar amino acid (SAA) containing cyclic tetrapeptides with α3δ architecture. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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12
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Hu XG, Thomas DS, Griffith R, Hunter L. Stereoselective Fluorination Alters the Geometry of a Cyclic Peptide: Exploration of Backbone-Fluorinated Analogues of Unguisin A. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403071] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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13
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Hu XG, Thomas DS, Griffith R, Hunter L. Stereoselective fluorination alters the geometry of a cyclic peptide: exploration of backbone-fluorinated analogues of unguisin A. Angew Chem Int Ed Engl 2014; 53:6176-9. [PMID: 24848423 DOI: 10.1002/anie.201403071] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Revised: 04/04/2014] [Indexed: 01/23/2023]
Abstract
New methods for enhancing the efficiency of peptide cyclization, and for fine-tuning the conformations of cyclic peptides, are valuable from a drug development perspective. Herein stereoselective fluorination is investigated as a new strategy for achieving these goals. Four vicinal difluorinated analogues of the natural cyclic heptapeptide unguisin A have been efficiently synthesized. The analogues are found to adopt dramatically different secondary structures, controlled by the fluorine stereochemistry.
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Affiliation(s)
- Xiang-Guo Hu
- School of Chemistry, UNSW Australia, Sydney NSW 2052 (Australia) http://www.chemistry.unsw.edu.au/research/research-groups/hunter-group
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14
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Krishna Y, Sharma S, Ampapathi RS, Koley D. Furan-Based Locked Z-Vinylogous γ-Amino Acid Stabilizing Protein α-Turn in Water-Soluble Cyclic α3γ Tetrapeptides. Org Lett 2014; 16:2084-7. [DOI: 10.1021/ol5002126] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yarkali Krishna
- Medicinal and Process Chemistry
Division and ‡Centre for Nuclear Magnetic Resonance,
SAIF, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh 226031, India
| | - Shrikant Sharma
- Medicinal and Process Chemistry
Division and ‡Centre for Nuclear Magnetic Resonance,
SAIF, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh 226031, India
| | - Ravi S. Ampapathi
- Medicinal and Process Chemistry
Division and ‡Centre for Nuclear Magnetic Resonance,
SAIF, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh 226031, India
| | - Dipankar Koley
- Medicinal and Process Chemistry
Division and ‡Centre for Nuclear Magnetic Resonance,
SAIF, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh 226031, India
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15
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Farahani MD, Honarparvar B, Albericio F, Maguire GEM, Govender T, Arvidsson PI, Kruger HG. Proline N-oxides: modulators of the 3D conformation of linear peptides through “NO-turns”. Org Biomol Chem 2014; 12:4479-90. [DOI: 10.1039/c4ob00433g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Upadhyaya K, Ajay A, Mahar R, Pandey R, Kumar B, Shukla SK, Tripathi RP. A strategy to access fused triazoloquinoline and related nucleoside analogues. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.07.088] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Anand N, Upadhyaya K, Ajay A, Mahar R, Shukla SK, Kumar B, Tripathi RP. A Strategy for the Synthesis of Anthraquinone-Based Aryl-C-glycosides. J Org Chem 2013; 78:4685-96. [DOI: 10.1021/jo302589t] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Namrata Anand
- Division of Medicinal and Process
Chemistry, CSIR-Central Drug Research Institute, Lucknow 226001, India
| | - Kapil Upadhyaya
- Division of Medicinal and Process
Chemistry, CSIR-Central Drug Research Institute, Lucknow 226001, India
| | - Arya Ajay
- Division of Medicinal and Process
Chemistry, CSIR-Central Drug Research Institute, Lucknow 226001, India
| | - Rohit Mahar
- Sophisticated Analytical Instrument
Facility, CSIR-Central Drug Research Institute, Lucknow 226001, India
| | - Sanjeev K. Shukla
- Sophisticated Analytical Instrument
Facility, CSIR-Central Drug Research Institute, Lucknow 226001, India
| | - Brijesh Kumar
- Sophisticated Analytical Instrument
Facility, CSIR-Central Drug Research Institute, Lucknow 226001, India
| | - Rama Pati Tripathi
- Division of Medicinal and Process
Chemistry, CSIR-Central Drug Research Institute, Lucknow 226001, India
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18
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Pawar SA, Jabgunde AM, Maguire GE, Kruger HG, Sayed Y, Soliman ME, Dhavale DD, Govender T. Linear and cyclic glycopeptide as HIV protease inhibitors. Eur J Med Chem 2013; 60:144-54. [DOI: 10.1016/j.ejmech.2012.11.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 11/08/2012] [Accepted: 11/12/2012] [Indexed: 11/28/2022]
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19
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Pawar SA, Jabgunde AM, Petzold K, Maguire GEM, Dhavale DD, Kruger HG, Govender T. Investigation and folding pattern of l-ido and d-gluco peptides by EASY ROESY NMR and X-ray. RSC Adv 2013. [DOI: 10.1039/c3ra44542a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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20
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Ajay A, Sharma S, Gupt MP, Bajpai V, Hamidullah, Kumar B, Kaushik MP, Konwar R, Ampapathi RS, Tripathi RP. Diversity Oriented Synthesis of Pyran Based Polyfunctional Stereogenic Macrocyles and Their Conformational Studies. Org Lett 2012; 14:4306-9. [DOI: 10.1021/ol3022275] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arya Ajay
- Medicinal and Process Chemistry Division, Sophisticated Analytical Instrumentation Facility, Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow-226001, U.P., India, and Process Technology Division, Defence and Research Development Establishment, Jhansi Road, Gwalior-474011, M. P., India
| | - Shrikant Sharma
- Medicinal and Process Chemistry Division, Sophisticated Analytical Instrumentation Facility, Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow-226001, U.P., India, and Process Technology Division, Defence and Research Development Establishment, Jhansi Road, Gwalior-474011, M. P., India
| | - Munna Prasad Gupt
- Medicinal and Process Chemistry Division, Sophisticated Analytical Instrumentation Facility, Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow-226001, U.P., India, and Process Technology Division, Defence and Research Development Establishment, Jhansi Road, Gwalior-474011, M. P., India
| | - Vikas Bajpai
- Medicinal and Process Chemistry Division, Sophisticated Analytical Instrumentation Facility, Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow-226001, U.P., India, and Process Technology Division, Defence and Research Development Establishment, Jhansi Road, Gwalior-474011, M. P., India
| | - Hamidullah
- Medicinal and Process Chemistry Division, Sophisticated Analytical Instrumentation Facility, Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow-226001, U.P., India, and Process Technology Division, Defence and Research Development Establishment, Jhansi Road, Gwalior-474011, M. P., India
| | - Brijesh Kumar
- Medicinal and Process Chemistry Division, Sophisticated Analytical Instrumentation Facility, Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow-226001, U.P., India, and Process Technology Division, Defence and Research Development Establishment, Jhansi Road, Gwalior-474011, M. P., India
| | - Mahabir Prasad Kaushik
- Medicinal and Process Chemistry Division, Sophisticated Analytical Instrumentation Facility, Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow-226001, U.P., India, and Process Technology Division, Defence and Research Development Establishment, Jhansi Road, Gwalior-474011, M. P., India
| | - Rituraj Konwar
- Medicinal and Process Chemistry Division, Sophisticated Analytical Instrumentation Facility, Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow-226001, U.P., India, and Process Technology Division, Defence and Research Development Establishment, Jhansi Road, Gwalior-474011, M. P., India
| | - Ravi Sankar Ampapathi
- Medicinal and Process Chemistry Division, Sophisticated Analytical Instrumentation Facility, Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow-226001, U.P., India, and Process Technology Division, Defence and Research Development Establishment, Jhansi Road, Gwalior-474011, M. P., India
| | - Rama Pati Tripathi
- Medicinal and Process Chemistry Division, Sophisticated Analytical Instrumentation Facility, Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow-226001, U.P., India, and Process Technology Division, Defence and Research Development Establishment, Jhansi Road, Gwalior-474011, M. P., India
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