1
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Chacko S, Ramapanicker R. Synthesis of 1-Deoxy-8,8a-di-epi-castanospermine, 1-Deoxy-6,7,8a-tri-epi-castanospermine and Formal Synthesis of Pumilotoxin 251D. ChemistrySelect 2016. [DOI: 10.1002/slct.201600891] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shibin Chacko
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur, Uttar Pradesh India 208016
| | - Ramesh Ramapanicker
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur, Uttar Pradesh India 208016
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2
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Pawar NJ, Parihar VS, Khan A, Joshi R, Dhavale DD. Quaternary Indolizidine and Indolizidone Iminosugars as Potential Immunostimulating and Glycosidase Inhibitory Agents: Synthesis, Conformational Analysis, Biological Activity, and Molecular Docking Study. J Med Chem 2015; 58:7820-32. [DOI: 10.1021/acs.jmedchem.5b00951] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nitin J. Pawar
- Department
of Chemistry, Garware Research Centre, Savitribai Phule Pune University (formerly University
of Pune), Pune 411 007, India
| | - Vijay Singh Parihar
- Department
of Chemistry, Garware Research Centre, Savitribai Phule Pune University (formerly University
of Pune), Pune 411 007, India
| | - Ayesha Khan
- Department
of Chemistry, Savitribai Phule Pune University, Pune 411 007, India
| | - Rakesh Joshi
- Institute
of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Pune 411 007, India
| | - Dilip D. Dhavale
- Department
of Chemistry, Garware Research Centre, Savitribai Phule Pune University (formerly University
of Pune), Pune 411 007, India
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3
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Sonawane DP, Corbett Y, Dhavale DD, Taramelli D, Trombini C, Quintavalla A, Lombardo M. D-Glucose-Derived 1,2,4-Trioxepanes: Synthesis, Conformational Study, and Antimalarial Activity. Org Lett 2015; 17:4074-7. [PMID: 26237035 DOI: 10.1021/acs.orglett.5b01996] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
New enantiomerically pure 1,2,4-trioxepanes 10a,b/11a,b were synthesized from D-glucose. Their conformational behavior was studied by low-temperature NMR and substantiated by DFT calculations. On evaluation of in vitro antimalarial activity, the adamantyl derivative 11b showed IC50 values in the low micromolar range, particularly against the W2 chloroquine-resistant Plasmodium falciparum strain (IC50 = 0.15 ± 0.12 μM).
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Affiliation(s)
- D P Sonawane
- †Department of Chemistry, Garware Research Centre, Savitribai Phule Pune University (formerly University of Pune), Pune 411 007, India
| | - Y Corbett
- ‡Dipartimento di Scienze Farmacologiche e Biomolecolari, Università di Milano, Via Pascal 36, 20133 Milano, Italy
| | - D D Dhavale
- †Department of Chemistry, Garware Research Centre, Savitribai Phule Pune University (formerly University of Pune), Pune 411 007, India
| | - D Taramelli
- ‡Dipartimento di Scienze Farmacologiche e Biomolecolari, Università di Milano, Via Pascal 36, 20133 Milano, Italy
| | - C Trombini
- #Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum, Università di Bologna, via Selmi, 2, I-40126 Bologna, Italy
| | - A Quintavalla
- #Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum, Università di Bologna, via Selmi, 2, I-40126 Bologna, Italy
| | - M Lombardo
- #Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum, Università di Bologna, via Selmi, 2, I-40126 Bologna, Italy
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4
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Mishra A, Tiwari VK. One-Pot Synthesis of Glycosyl-β-azido Ester via Diazotransfer Reaction Toward Access of Glycosyl-β-triazolyl Ester. J Org Chem 2015; 80:4869-81. [DOI: 10.1021/acs.joc.5b00179] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Amrita Mishra
- Department of Chemistry,
Centre of Advanced Study, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Vinod K. Tiwari
- Department of Chemistry,
Centre of Advanced Study, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
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5
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Saha N, Chattopadhyay SK. Enantioselective synthesis of polyhydroxyindolizidinone and quinolizidinone derivatives from a common precursor. Beilstein J Org Chem 2014; 10:3104-10. [PMID: 25670979 PMCID: PMC4311665 DOI: 10.3762/bjoc.10.327] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 12/14/2014] [Indexed: 11/23/2022] Open
Abstract
A concise asymmetric synthetic route to two new tetrahydroxyindolizidinone and quinolizidinone derivatives has been developed from a common intermediate which featured a highly selective dihydroxylation reaction and a RCM reaction as key steps.
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Affiliation(s)
- Nemai Saha
- Department of Chemistry, University of Kalyani, Kalyani - 741235, West Bengal, India, Fax: +91+33+25828282
| | - Shital K Chattopadhyay
- Department of Chemistry, University of Kalyani, Kalyani - 741235, West Bengal, India, Fax: +91+33+25828282
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6
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Tiwari DK, Bharadwaj KC, Puranik VG, Tiwari DK. Divergent total synthesis of 1,6,8a-tri-epi-castanospermine and 1-deoxy-6,8a-di-epi-castanospermine from substituted azetidin-2-one (β-lactam), involving a cascade sequence of reactions as a key step. Org Biomol Chem 2014; 12:7389-96. [PMID: 25134486 DOI: 10.1039/c4ob00948g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A divergent, short, and novel total synthesis of 1,6,8a-tri-epi-castanospermine (7) and 1-deoxy-6,8a-di-epi-castanospermine (8) has been developed via a common precursor, 15, obtained from D-mannitol derived β-lactam. The key step involves a one pot cascade sequence of trimethyl sulfoxonium ylide based cyclization of epoxy sulfonamide 14via epoxide ring opening, one carbon homologation followed by intramolecular cyclization.
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Affiliation(s)
- Dipak Kumar Tiwari
- Division of Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Tarnaka, Hyderabad-500007, India.
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7
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Pawar NJ, Sidhu NS, Sheldrick GM, Dhavale DD, Diederichsen U. Molecular architecture with carbohydrate functionalized β-peptides adopting 314-helical conformation. Beilstein J Org Chem 2014; 10:948-55. [PMID: 24991244 PMCID: PMC4077383 DOI: 10.3762/bjoc.10.93] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2013] [Accepted: 03/31/2014] [Indexed: 12/14/2022] Open
Abstract
Carbohydrate recognition is essential in cellular interactions and biological processes. It is characterized by structural diversity, multivalency and cooperative effects. To evaluate carbohydrate interaction and recognition, the structurally defined attachment of sugar units to a rigid template is highly desired. β-Peptide helices offer conformationally stable templates for the linear presentation of sugar units in defined distances. The synthesis and β-peptide incorporation of sugar-β-amino acids are described providing the saccharide units as amino acid side chain. The respective sugar-β-amino acids are accessible by Michael addition of ammonia to sugar units derivatized as α,β-unsaturated esters. Three sugar units were incorporated in β-peptide oligomers varying the sugar (glucose, galactose, xylose) and sugar protecting groups. The influence of sugar units and the configuration of sugar-β-amino acids on β-peptide secondary structure were investigated by CD spectroscopy.
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Affiliation(s)
- Nitin J Pawar
- Institute for Organic and Biomolecular Chemistry, Georg-August University Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany
- Department of Chemistry, Garware Research Centre, University of Pune, Pune 411 007, India
| | - Navdeep S Sidhu
- Institute for Inorganic Chemistry, Georg-August University Göttingen, Tammannstraße 4, D-37077 Göttingen, Germany
| | - George M Sheldrick
- Institute for Inorganic Chemistry, Georg-August University Göttingen, Tammannstraße 4, D-37077 Göttingen, Germany
| | - Dilip D Dhavale
- Department of Chemistry, Garware Research Centre, University of Pune, Pune 411 007, India
| | - Ulf Diederichsen
- Institute for Organic and Biomolecular Chemistry, Georg-August University Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany
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8
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Sundararaju B, Sridhar T, Achard M, Sharma GVM, Bruneau C. Ring Closing and Macrocyclization of β-Dipeptides by Olefin Metathesis. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300608] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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9
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Kumar KSA, Rathee JS, Subramanian M, Chattopadhyay S. Divergent Synthesis of 4-epi-Fagomine, 3,4-Dihydroxypipecolic Acid, and a Dihydroxyindolizidine and Their β-Galactosidase Inhibitory and Immunomodulatory Activities. J Org Chem 2013; 78:7406-13. [DOI: 10.1021/jo400448p] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- K. S. Ajish Kumar
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - J. S. Rathee
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - M. Subramanian
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - S. Chattopadhyay
- Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India
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10
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11
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Prasad V, Kumar D, Tiwari VK. A highly expeditious synthesis of a bicyclic iminosugar using the novel key step of [NMM]+[HSO4]− promoted conjugate addition and Mitsunobu reaction. RSC Adv 2013. [DOI: 10.1039/c3ra23467c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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12
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Pawar NJ, Parihar VS, Chavan ST, Joshi R, Joshi PV, Sabharwal SG, Puranik VG, Dhavale DD. α-Geminal Dihydroxymethyl Piperidine and Pyrrolidine Iminosugars: Synthesis, Conformational Analysis, Glycosidase Inhibitory Activity, and Molecular Docking Studies. J Org Chem 2012; 77:7873-82. [DOI: 10.1021/jo3009534] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nitin J. Pawar
- Department of Chemistry, Garware
Research Centre, University of Pune, Pune,
411 007, India
| | - Vijay Singh Parihar
- Department of Chemistry, Garware
Research Centre, University of Pune, Pune,
411 007, India
| | - Sanjay T. Chavan
- Division
of Biochemistry, Department
of Chemistry, University of Pune, Pune,
411 007, India
| | - Rakesh Joshi
- Biochemical
Sciences Division, National Chemical Laboratory, Pune, 411 008, India
| | - Pranaya V. Joshi
- Centre for Material Characterization, National Chemical Laboratory, Pune, 411 008, India
| | - Sushma G. Sabharwal
- Division
of Biochemistry, Department
of Chemistry, University of Pune, Pune,
411 007, India
| | - Vedavati G. Puranik
- Centre for Material Characterization, National Chemical Laboratory, Pune, 411 008, India
| | - Dilip D. Dhavale
- Department of Chemistry, Garware
Research Centre, University of Pune, Pune,
411 007, India
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13
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Šafář P, Žúžiová J, Marchalín Š, Prónayová N, Švorc Ľ, Vrábel V, Šesták S, Rendić D, Tognetti V, Joubert L, Daïch A. Combined Chemical, Biological and Theoretical DFT-QTAIM Study of Potent Glycosidase Inhibitors Based on Quaternary Indolizinium Salts. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200431] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Eklund EJ, Pike RD, Scheerer JR. Synthesis of 1-aminopyrrolizidine alkaloid (−)-absouline by stereoselective aminoconjugate addition. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.06.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Gómez L, Garrabou X, Joglar J, Bujons J, Parella T, Vilaplana C, Cardona PJ, Clapés P. Chemoenzymatic synthesis, structural study and biological activity of novel indolizidine and quinolizidine iminocyclitols. Org Biomol Chem 2012; 10:6309-21. [DOI: 10.1039/c2ob25943e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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16
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Li YP, Li ZJ, Meng XB. Highly diastereoselective conjugate addition of nitroalkanes to α,β-unsaturated sugar lactones for the efficient synthesis of chiral 2-pyrrolidones. Carbohydr Res 2011; 346:1801-8. [DOI: 10.1016/j.carres.2011.06.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2011] [Revised: 05/28/2011] [Accepted: 06/08/2011] [Indexed: 11/26/2022]
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17
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Rodríguez-Solla H, Concellón C, Blanco EG, Sarmiento JI, Díaz P, Soengas RG. Chromium-mediated stereoselective synthesis of carbohydrate-derived (E)-α,β-unsaturated esters or amides. J Org Chem 2011; 76:5461-5. [PMID: 21612264 DOI: 10.1021/jo200548g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A chromium-mediated novel synthesis of carbohydrate-derived di- and trisubstituted (E)-α,β-unsaturated esters or amides from a range of dichloroesters or amides and a variety of sugar aldehydes is reported. The process took place with total stereoselectivity and in high yields. A mechanism based on a sequential chromium-promoted aldol-type reaction and a completely stereoselective β-elimination reaction is proposed to explain these results.
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Affiliation(s)
- Humberto Rodríguez-Solla
- Departamento de Química Orgánica e Inorgánica, Facultad de Química, Universidad de Oviedo, Julián Clavería 8, 33071 Oviedo, Spain
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18
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Yousuf SK, Mukherjee D, L M, Taneja SC. Highly regio- and stereoselective one-pot synthesis of carbohydrate-based butyrolactones. Org Lett 2011; 13:576-9. [PMID: 21244043 DOI: 10.1021/ol102723c] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The use of manganese(III) acetate allows the direct synthesis of diverse arrays of [4.3.0] bicyclic carbohydrate-based γ-lactone building blocks from glycals. A mechanism to explain the high regio- and stereoselectivity is proposed. The new reaction has the potential to generate libraries for biological screening.
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Affiliation(s)
- Syed Khalid Yousuf
- Natural Product Chemistry Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu, India 180001
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19
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Sanap SP, Ghosh S, Jabgunde AM, Pinjari RV, Gejji SP, Singh S, Chopade BA, Dhavale DD. Synthesis, computational study and glycosidase inhibitory activity of polyhydroxylated conidine alkaloids--a bicyclic iminosugar. Org Biomol Chem 2010; 8:3307-15. [PMID: 20517582 DOI: 10.1039/c004690f] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New bicyclic conidine iminosugars 1d and 1e were synthesized from D-glucose. Thus, D-glucose was converted to sugar beta-amino acids 3a and 3b in good yields. Individual treatment of 3a/3b with the Mukaiyama reagent afforded sugar beta-lactams 4a/4b that on reduction with LiAlH(4)/AlCl(3) gave azetidines 5a/5b with a sugar appendage. Reductive aminocyclization of sugar azetidines 5a/5b afforded the corresponding conidine iminosugars 1d/1e. Based on the (1)H NMR and DFT calculation studies the conformation of 1d was assigned as half chair A2 and that of 1e as a boat B2. The glycosidase inhibitory activities of 1d and 1e such as alpha-mannosidase, alpha-glucosidase and alpha-galactosidase were studied. The alpha-amylase activity was compared with acarbose. Compound 1d was found to be a moderate inhibitor of glycosidases while 1e was noticed to be a good inhibitor of alpha-mannosidase and a moderate inhibitor of other glycosidases. These results were substantiated by molecular docking studies using WHAT IF software and the AUTODOCK 3.0 program.
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Affiliation(s)
- Shrihari P Sanap
- Garware Research Centre, Department of Chemistry, University of Pune, Pune-411007, India
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20
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21
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Synthesis of azepane and nojirimycin iminosugars: the Sharpless asymmetric epoxidation of d-glucose-derived allyl alcohol and highly regioselective epoxide ring opening using sodium azide. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.01.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Wang N, Zhang LH, Ye XS. A new synthetic access to bicyclic polyhydroxylated alkaloid analogues from pyranosides. Org Biomol Chem 2010; 8:2639-49. [DOI: 10.1039/b923180c] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Efficient synthesis of 3-substituted indoles through a domino gold(I) chloride catalyzed cycloisomerization/C3-functionalization of 2-(alkynyl)anilines. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.09.019] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Garg A, Singh VK. A facile approach towards synthesis of verbalactone and biologically active δ-lactones using d-glucose. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.08.054] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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26
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Sharma GV, Rao KS, Ravi R, Narsimulu K, Nagendar P, Chandramouli C, Kumar SK, Kunwar A. Synthesis ofβ-Peptides withβ-Helices from New C-Linked Carbo-β-Amino Acids: Study on the Impact of Carbohydrate Side Chains. Chem Asian J 2009; 4:181-93. [DOI: 10.1002/asia.200800249] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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27
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Chakraborty C, Vyavahare VP, Puranik VG, Dhavale DD. Synthesis of five and six membered aminocyclitols: stereoselective Michael and Henry reaction approach with d-glucose derived α,β-unsaturated ester. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.07.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Sugars containing α,β-unsaturated carbonyl systems: synthesis and their usefulness as scaffolds in carbohydrate chemistry. Carbohydr Res 2008; 343:1523-39. [DOI: 10.1016/j.carres.2008.04.033] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2008] [Revised: 04/18/2008] [Accepted: 04/27/2008] [Indexed: 11/19/2022]
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29
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Mane RS, Kumar KSA, Dhavale DD. Synthesis of γ-Hydroxyalkyl Substituted Piperidine Iminosugars from d-Glucose. J Org Chem 2008; 73:3284-7. [DOI: 10.1021/jo800044r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rajendra S. Mane
- Department of Chemistry, Garware Research Centre, University of Pune, Pune- 411 007, India %
| | - K. S. Ajish Kumar
- Department of Chemistry, Garware Research Centre, University of Pune, Pune- 411 007, India %
| | - Dilip D. Dhavale
- Department of Chemistry, Garware Research Centre, University of Pune, Pune- 411 007, India %
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30
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Sharma GVM, Subash V, Reddy NY, Narsimulu K, Ravi R, Jadhav VB, Murthy USN, Kishore KH, Kunwar AC. Synthesis and conformational studies of peptides from new C-linked carbo-β-amino acids (β-Caas) with anomeric methylamino- and difluorophenyl moieties. Org Biomol Chem 2008; 6:4142-56. [DOI: 10.1039/b810817j] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Ajish Kumar KS, Chaudhari VD, Dhavale DD. Efficient synthesis of (+)-1,8,8a-tri-epi-swainsonine, (+)-1,2-di-epi-lentiginosine, (+)-9a-epi-homocastanospermine and (−)-9-deoxy-9a-epi-homocastanospermine from a d-glucose-derived aziridine carboxylate, and study of their glycosidase inhibitory activities. Org Biomol Chem 2008; 6:703-11. [DOI: 10.1039/b712753g] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Ajish Kumar KS, Chaudhari VD, Puranik VG, Dhavale DD. Synthesis and Glycosidase Inhibitory Studies of Pentahydroxyindolizidines:D-Glucose-Derived Aziridine-2-carboxylate Approach. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700461] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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33
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A simple one-pot entry to cyclic ethers of varied ring sizes from diols via phosphonium ion induced iodination and base catalyzed Williamson etherification. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.08.090] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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Pandey G, Dumbre SG, Khan MI, Shabab M. Convergent Approach toward the Synthesis of the Stereoisomers of C-6 Homologues of 1-Deoxynojirimycin and Their Analogues: Evaluation as Specific Glycosidase Inhibitors. J Org Chem 2006; 71:8481-8. [PMID: 17064023 DOI: 10.1021/jo061455v] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new and stereoselective strategy is developed to synthesize an appropriate template 9 to obtain C-6 homologues of 1-deoxyazasugars such as 1-deoxy-D-galactohomonojirimycin (5), 1-deoxy-4-hydroxymethyl-D-glucohomonojirimycin (6), and their enantiomers. The template 9 is also used to obtain neutral nonbasic pseudo-glyconolactam (8), C-4 amino, and methyl analogues of 1-deoxy-homonojirimycin as new analogues of 1-deoxyhomoazasugars. Compound 5 is found to be a potent and specific inhibitor to alpha-galactosidase (Ki = 1.7 microM). Similarly compounds 6 (Ki= 28 microM), ent-5 (Ki= 129 microM), and ent-6 (Ki= 12 microM) exhibited specific inhibition of beta-glucosidase.
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Affiliation(s)
- Ganesh Pandey
- Division of Organic Chemistry (Synthesis) and Division of Biochemical Science, National Chemical Laboratory, Pune-411008, India.
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35
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Markad SD, Karanjule NS, Sharma T, Sabharwal SG, Dhavale DD. Polyhydroxylated homoazepanes and 1-deoxy-homonojirimycin analogues: Synthesis and glycosidase inhibition study. Org Biomol Chem 2006; 4:3675-80. [PMID: 16990944 DOI: 10.1039/b609000a] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Johnson-Claisen rearrangement of D-gluco and L-ido-derived allylic orthoesters afforded gamma,delta-unsaturated ester that on ester reduction, epoxidation, regioselective oxirane opening by sodium azide and hydrogenation led to sugar amino alcohols--immediate precursors for 1-deoxy-homonojirimycin 3a,b, and polyhydroxylated homoazepanes 4a,b. Our synthetic approach and glycosidase inhibitory activity is reported.
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Affiliation(s)
- Shankar D Markad
- Garware Research Centre, Department of Chemistry, University of Pune, Pune, 411 007, India
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36
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Le Bouc G, Thomassigny C, Greck C. Diastereoselective syntheses of 1-deoxyhomonojirimycin and two new 1,5,6-trideoxy-1,5-iminoheptitols with d-allo- and l-talo-configuration. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.tetasy.2006.07.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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37
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Karanjule NS, Markad SD, Dhavale DD. Synthesis of Pentahydroxy Indolizidine Alkaloids Using Ring Closing Metathesis: Attempts To Find the Correct Structure of Uniflorine A. J Org Chem 2006; 71:6273-6. [PMID: 16872219 DOI: 10.1021/jo060823s] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ring closing metathesis of d-glucose derived diene-substrate containing nitrogen functionality followed by asymmetric dihydroxylation afforded sugar substituted dihydroxylated pyrrolidines 8a-c which on 1,2-acetonide deprotection and reductive amination afforded putative uniflorine A 2a and its analogues 2b-c, respectively.
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Affiliation(s)
- Narayan S Karanjule
- Garware Research Centre, Department of Chemistry, University of Pune, Pune-411 007, India
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38
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Karanjule NS, Markad SD, Shinde VS, Dhavale DD. Intramolecular 5-endo-Trig Aminomercuration of β-Hydroxy-γ-alkenylamines: Efficient Route to a Pyrrolidine Ring and Its Application for the Synthesis of (+)-Castanospermine and Analogues. J Org Chem 2006; 71:4667-70. [PMID: 16749803 DOI: 10.1021/jo0601617] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The intramolecular aminomercuration reaction of sugar-derived beta-hydroxy-gamma-alkenylamines 8a-c undergoes 5-endo-trig cyclization in high yield. The sugar-substituted pyrrolidines thus obtained were elaborated to the synthesis of polyhydroxylated indolizidine alkaloids, namely, castanospermine 1a, 1-epi-castanospermine 1b, and 8a-epi-castanospermine 1c, having promising glycosidase inhibitory activities.
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Affiliation(s)
- Narayan S Karanjule
- Department of Chemistry, Garware Research Centre, University of Pune, Pune-411 007, India
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39
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Markad SD, Karanjule NS, Sharma T, Sabharwal SG, Dhavale DD. Synthesis and evaluation of glycosidase inhibitory activity of N-butyl 1-deoxy-D-gluco-homonojirimycin and N-butyl 1-deoxy-L-ido-homonojirimycin. Bioorg Med Chem 2006; 14:5535-9. [PMID: 16682208 DOI: 10.1016/j.bmc.2006.04.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2006] [Revised: 04/19/2006] [Accepted: 04/20/2006] [Indexed: 10/24/2022]
Abstract
Conjugate addition of n-butyl amine to d-glucose derived alpha,beta-unsaturated ester 4 afforded beta-amino esters 5a,b that on reduction of ester group, 1,2-acetonide deprotection, and reductive amination led to the formation of corresponding N-butyl 1-deoxy-D-gluco-homonojirimycin 2c and N-butyl 1-deoxy-L-ido-homonojirimycin 2d which were found to be selective beta-glucosidase inhibitors with an IC(50) value in millimolar range.
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Affiliation(s)
- Shankar D Markad
- Garware Research Centre, Department of Chemistry, University of Pune, India
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40
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Synthesis of (−)-lentiginosine, its 8a-epimer and dihydroxylated pyrrolizidine alkaloid from d-glucose. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.02.074] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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41
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Herdeis C, Küpper P, Plé S. An expeditious stereoselective synthesis of natural (−)-Cassine via cascade HWE [3 + 2]-cycloaddition process. Org Biomol Chem 2006; 4:524-9. [PMID: 16446811 DOI: 10.1039/b516888k] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
l-Rhamnose is transformed to (-)-Cassine via a remarkable four step one pot reaction. The Horner-Wadsworth-Emmons [3 + 2]-1,3-dipolar cycloaddition reaction cascade is the pivotal step in this reaction sequence and makes the synthesis highly efficient.
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Affiliation(s)
- Claus Herdeis
- Institut für Pharmazie und Lebensmittelchemie der Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.
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42
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Markad SD, Karanjule NS, Sharma T, Sabharwal SG, Puranik VG, Dhavale DD. Synthesis of tetrahydroxy perhydroaza-azulenes: tandem Johnson–Claisen rearrangement ofd-glucose-derived allylic alcohols. Org Biomol Chem 2006; 4:2549-55. [PMID: 16791317 DOI: 10.1039/b603545k] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Johnson-Claisen rearrangement of D-glucose-derived allylic alcohols 5a,b, afforded sugar-substituted gamma,delta-unsaturated ester in high yield. Conversion of the ester group to an azidomethyl group, epoxidation of the double bond and hydrogenation gave pyrrolidine ring skeletons 13a and 13b, which were transformed to tetrahydroxy perhydroaza-azulenes 1a and 1b, respectively. Glycosidase inhibitory activity was also evaluated.
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Affiliation(s)
- Shankar D Markad
- Garware Research Centre, Department of Chemistry, University of Pune, India
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43
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Yi T, Wu AT, Wu SH, Zou W. 1-C-(2′-Oxoalkyl) glycosides as latent α,β-unsaturated conjugates. Synthesis of aza-C-glycosides by an intramolecular hetero-Michael addition. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.09.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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44
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Dhavale DD, Jachak SM. The 5-endo-trig cyclization of D-glucose derived gamma-alkenylamines with mercury (II) salts: synthesis of 1-deoxycastanospermine and its 8a-epi-analogue. Molecules 2005; 10:893-900. [PMID: 18007358 PMCID: PMC6147711 DOI: 10.3390/10080893] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2004] [Revised: 01/04/2005] [Accepted: 01/10/2005] [Indexed: 11/17/2022] Open
Abstract
The intramolecular aminomercuration of gamma-alkenylamines 1a, 1b and 4 was shown to afford the 5-endo-trig cyclized product exclusively in good yield. The utility of pyrrolidine derivatives thus obtained from D-glucose derived gamma-alkenylamines 1a and 1b was demonstrated in the synthesis of 1-deoxycastanospermine (3a) and 1-deoxy-8a-epi- castanospermine (3b).
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Affiliation(s)
- Dilip D Dhavale
- Department of Chemistry, Garware Research Centre, University of Pune, Pune- 411 007, India.
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45
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Steric determinants in diastereocontrol during Baylis–Hillman reaction of sugar-derived aldehydes. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2005.06.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Patil NT, Pahadi NK, Yamamoto Y. A new route for the synthesis of indolizidine (−)-209D: excellent diastereoselectivity in the intramolecular hydroamination of alkynes. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.01.139] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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47
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Karanjule NS, Markad SD, Sharma T, Sabharwal SG, Puranik VG, Dhavale DD. 1,3-Dipolar Cycloaddition Reaction of d-Glucose-Derived Nitrone with Allyl Alcohol: Synthesis of 2-Hydroxy-1-deoxycastanospermine Analogues. J Org Chem 2005; 70:1356-63. [PMID: 15704970 DOI: 10.1021/jo048176x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The synthesis and evaluation of glycosidase inhibitory activity of polyhydroxylated indolizidine alkaloids namely 2-hydroxy-1-deoxycastanospermine 3a,b and 2-hydroxy-1-deoxy-8a-epi-castanospermine 3c,d is reported. The key step involves the intermolecular 1,3-dipolar cycloaddition of allyl alcohol to d-glucose-derived nitrone 4, followed by tosylation, that afforded four diastereomeric sugar-substituted isoxazolidines 5a-d with the desired regioselectivity. The one-pot conversion of 5a-d to pyrrolidines 8a-d by hydrogenolysis, removal of 1,2-acetonoide functionality, and hydrogenation afforded corresponding target molecules 3a-d.
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Affiliation(s)
- Narayan S Karanjule
- Department of Chemistry, Garware Research Centre, University of Pune, Pune-411 007, India
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48
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Matin MM, Sharma T, Sabharwal SG, Dhavale DD. Synthesis and evaluation of the glycosidase inhibitory activity of 5-hydroxy substituted isofagomine analogues. Org Biomol Chem 2005; 3:1702-7. [PMID: 15858653 DOI: 10.1039/b418283a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient strategy for the synthesis of 5-hydroxy substituted isofagomine analogues and , having both -CH2OH/CH3 and -OH functionality at the C-5 position, and evaluation of their inhibitory potency is reported. The synthetic methodology involves the aldol-Cannizzaro reaction of easily available alpha-d-xylopentodialdose followed by hydrogenolysis to afford the triol . Selective amidation of the alpha- and beta-hydroxymethyl group at C-4, deprotection of the 1,2-acetonide group and hydrogenation gave the target molecules, which were found to be potent against beta-glycosidases with IC50 values in the micro molar range. Compound showed excellent potency against glycosidases and human salivary amylase.
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Affiliation(s)
- Mohammed M Matin
- Garware Research Centre, Department of Chemistry, University of Pune, Pune 411 007, India
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49
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Dhavale DD, Kumar KSA, Chaudhari VD, Sharma T, Sabharwal SG, Prakashareddy J. Aziridine carboxylate from d-glucose: synthesis of polyhydroxylated piperidine, pyrrolidine alkaloids and study of their glycosidase inhibition. Org Biomol Chem 2005; 3:3720-6. [PMID: 16211108 DOI: 10.1039/b509216g] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The D-glucose derived aziridine carboxylate 5 was obtained from (E)-ethyl-6-bromo-1,2-O-isopropylidene-3-O-benzyl-5-deoxy-alpha-D-xylo-5-eno-heptofuranuronate 4 through conjugate addition of benzylamine and in situ intramolecular nucleophilic expulsion of bromine. The regioselective aziridine ring-opening, using water as a nucleophile, resulted in the alpha-hydroxy-beta-aminoester 6, which was exploited in the synthesis of six and five membered azasugars 1b/1c and 2b/2c, respectively. The glycosidase inhibitory activity of the title compounds was evaluated.
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Affiliation(s)
- Dilip D Dhavale
- Garware Research Centre, Department of Chemistry, University of Pune, Pune, 411 007, India.
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50
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Katiyar D, Mishra RC, Tripathi RP. Diastereoselective Synthesis of Galactopyranosyl Amino Esters and Their Transformation into C‐Nucleosides. J Carbohydr Chem 2004. [DOI: 10.1081/car-120030140] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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