1
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Bora SK, Shit S, Sahu AK, Saikia AK. Diastereoselective Synthesis of 2,6-Disubstituted Tetrahydropyranones via Prins Cyclization of 3-Bromobut-3-en-1-ols and Aldehydes. J Org Chem 2023. [PMID: 36811615 DOI: 10.1021/acs.joc.2c02715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Tetrahydropyranones are synthesized from 3-bromobut-3-en-1-ols and aldehydes in good yields with excellent diastereoselectivity at -35 °C. The reaction involves an initial formation of a most stable six-membered chairlike tetrahydropyranyl carbocation followed by nucleophilic attack of the hydroxyl group and subsequent elimination of HBr to give tetrahydropyranone. The carbonyl moiety of the tetrahydropyranone is converted to enol ether and esters using Wittig reaction. It is also transformed into 4-hydroxy-2,6-disubstituted tetrahydropyran with 2,4- and 4,6-cis configuration by lithium aluminum hydride in up to 96% diastereoselectivity. Furthermore, the methodology is extended toward the synthesis of novel anticancer aminoguanidine compounds.
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Affiliation(s)
- Surjya Kumar Bora
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Sudip Shit
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Archana Kumari Sahu
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Anil K Saikia
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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2
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Meirelles MA, Braga CB, Ornelas C, Pilli RA. Synthesis of Nitrogen-Containing Goniothalamin Analogues with Higher Cytotoxic Activity and Selectivity against Cancer Cells. ChemMedChem 2019; 14:1403-1417. [PMID: 31260170 DOI: 10.1002/cmdc.201900281] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 06/25/2019] [Indexed: 12/23/2022]
Abstract
Two series of racemic goniothalamin analogues displaying nitrogen-containing groups were designed and synthesized. A total of 19 novel analogues were evaluated against a panel of four different cancer cell lines, along with the normal prostate cell line PNT2 to determine their selectivity. Among them, goniothalamin chloroacrylamide 13 e displayed the lowest IC50 values for both MCF-7 (0.5 μm) and PC3 (0.3 μm) cells, about 26-fold more potent than goniothalamin (1). Besides its higher potency, compound 13 e also displayed much higher selectivity than goniothalamin. In contrast, goniothalamin isobutyramide 13 c was the most potent analogue against Caco-2 cells (IC50 =0.8 μm), about 10-fold more potent and 17-fold more selective than 1. These results reveal the potential of compounds 13 c and 13 e for further in vivo studies, representing the first goniothalamin analogues with IC50 values in the low micromolar range and high selectivity against MCF-7, Caco-2, and PC3 cancer cell lines.
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Affiliation(s)
- Matheus A Meirelles
- Department of Organic Chemistry, Institute of Chemistry, University of Campinas, UNICAMP CEP 13083-970, Campinas, São Paulo, Brazil
| | - Carolyne B Braga
- Department of Organic Chemistry, Institute of Chemistry, University of Campinas, UNICAMP CEP 13083-970, Campinas, São Paulo, Brazil
| | - Catia Ornelas
- Department of Organic Chemistry, Institute of Chemistry, University of Campinas, UNICAMP CEP 13083-970, Campinas, São Paulo, Brazil
| | - Ronaldo A Pilli
- Department of Organic Chemistry, Institute of Chemistry, University of Campinas, UNICAMP CEP 13083-970, Campinas, São Paulo, Brazil
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3
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Rahman MA, Reddy NM, Yadav JS. Progress towards the Synthesis of (‐)‐Ushikulide A: Synthesis of C1‐C15 Aliphatic and C17‐C31 Spiroketal Fragments by an Aldol Approach. ChemistrySelect 2019. [DOI: 10.1002/slct.201900252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mohammad Ataur Rahman
- Centre for Semiochemicals DivisionCSIR-Indian Institute of Chemical Technology Hyderabad
- Department of Chemistry and Chemical BiologyHarvard University, Cambridge Massachusetts 02138 United States
| | - N. Mallikarjuna Reddy
- Centre for Semiochemicals DivisionCSIR-Indian Institute of Chemical Technology Hyderabad
| | - Jhillu Singh Yadav
- Centre for Semiochemicals DivisionCSIR-Indian Institute of Chemical Technology Hyderabad
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4
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Porey A, Santra S, Guin J. Highly Enantioselective Synthesis of Functionalized Glutarimide Using Oxidative N-Heterocyclic Carbene Catalysis: A Formal Synthesis of (-)-Paroxetine. J Org Chem 2019; 84:5313-5327. [PMID: 30880394 DOI: 10.1021/acs.joc.9b00320] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A simple yet highly effective approach toward enantioselective synthesis of trans-3,4-disubstituted glutarimides from readily available starting materials is developed using oxidative N-heterocyclic carbene catalysis. The catalytic reaction involves a formal [3 + 3] annulation between enals and substituted malonamides enabling the production of glutarimide derivatives in a single chemical operation via concomitant formation of C-C and C-N bonds. The reaction offers easy access to a broad range of functionalized glutarimides with excellent enantioselectivity and good yield. Synthetic application of the method is demonstrated via formal synthesis of (-)-paroxetine and other bioactive molecules.
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Affiliation(s)
- Arka Porey
- School of Chemical Sciences , Indian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road , Jadavpur, Kolkata 700032 , India
| | - Surojit Santra
- School of Chemical Sciences , Indian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road , Jadavpur, Kolkata 700032 , India
| | - Joyram Guin
- School of Chemical Sciences , Indian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road , Jadavpur, Kolkata 700032 , India
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5
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Stier K, Checinski MP, Witte SNR, Mahrwald R. Matched/Mismatched Cases in Proline-Catalyzed Cascade Reactions with Carbohydrates: A Computational Insight into the Role of d- and l-Proline. J Org Chem 2019; 84:1201-1217. [PMID: 30543442 DOI: 10.1021/acs.joc.8b02530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The cascade reactions of carbohydrates with methyl ketones in the presence of proline feature complex running reaction steps. By extensive quantum mechanical simulation, a coherent reaction mechanism was identified matching the experimental data. The present calculations indicate a Mannich reaction/proline hydrolysis/retro aza-Michael cascade to form an intermediate α,β-unsaturated ethyl ketone. This key precursor yields C-glycosides by a final intramolecular amine-catalyzed oxa-Michael addition. Additionally, the formation of this intermediate determines the rate and selectivity of the overall cascade reaction. Strongly matched and mismatched cases were observed when used with d- or l-proline. They are consistent with the calculated energy barriers of the corresponding transition states.
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Affiliation(s)
- Kenta Stier
- CreativeQuantum GmbH , Am Studio 2 , 12489 Berlin , Germany
| | | | - Swjatoslaw N R Witte
- Institute of Organic Chemistry , Leibnitz University, Hannover , Schneiderberg 1 B 30167 Hannover , Germany
| | - Rainer Mahrwald
- Institute of Chemistry , Humboldt University Berlin , Brook-Taylor Str. 2 , 12484 Berlin , Germany
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6
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Boev VI, Moskalenko AI, Belopukhov SL, Nikonova GN. Stereoselective synthesis of tetrahydropyran new derivatives underlain by α-allyl ketones. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2016. [DOI: 10.1134/s1070428016050031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Sultana S, Devi NR, Saikia AK. Synthesis of Substituted Tetrahydropyrans and Tetrahydrofurans via Intramolecular Hydroalkoxylation of Alkenols. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500314] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sabera Sultana
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati 781039 Assam India
| | - Ngangbam Renubala Devi
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati 781039 Assam India
| | - Anil K. Saikia
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati 781039 Assam India
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8
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Terent'ev AO, Borisov DA, Vil’ VA, Dembitsky VM. Synthesis of five- and six-membered cyclic organic peroxides: Key transformations into peroxide ring-retaining products. Beilstein J Org Chem 2014; 10:34-114. [PMID: 24454562 PMCID: PMC3896255 DOI: 10.3762/bjoc.10.6] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Accepted: 11/16/2013] [Indexed: 12/16/2022] Open
Abstract
The present review describes the current status of synthetic five and six-membered cyclic peroxides such as 1,2-dioxolanes, 1,2,4-trioxolanes (ozonides), 1,2-dioxanes, 1,2-dioxenes, 1,2,4-trioxanes, and 1,2,4,5-tetraoxanes. The literature from 2000 onwards is surveyed to provide an update on synthesis of cyclic peroxides. The indicated period of time is, on the whole, characterized by the development of new efficient and scale-up methods for the preparation of these cyclic compounds. It was shown that cyclic peroxides remain unchanged throughout the course of a wide range of fundamental organic reactions. Due to these properties, the molecular structures can be greatly modified to give peroxide ring-retaining products. The chemistry of cyclic peroxides has attracted considerable attention, because these compounds are used in medicine for the design of antimalarial, antihelminthic, and antitumor agents.
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Key Words
- 1,2,4,5-tetraoxanes
- 1,2,4-trioxanes
- 1,2,4-trioxolanes
- 1,2-dioxanes
- 1,2-dioxenes
- 1,2-dioxolanes
- cyclic peroxides
- ozonides
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Affiliation(s)
- Alexander O Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Dmitry A Borisov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Vera A Vil’
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Valery M Dembitsky
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
- Institute for Drug Research, P.O. Box 12065, Hebrew University, Jerusalem 91120, Israel
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9
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Priest J, Longland MR, Elsegood MRJ, Kimber MC. An Asymmetric Synthesis of trans-Fused Butyrolactones from Endoperoxides. J Org Chem 2013; 78:3476-81. [DOI: 10.1021/jo400177j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joshua Priest
- Department of Chemistry, Loughborough University, Leicestershire LE11 3TU, U.K
| | - Mark. R. Longland
- Department of Chemistry, Loughborough University, Leicestershire LE11 3TU, U.K
| | - Mark R. J. Elsegood
- Department of Chemistry, Loughborough University, Leicestershire LE11 3TU, U.K
| | - Marc C. Kimber
- Department of Chemistry, Loughborough University, Leicestershire LE11 3TU, U.K
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10
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Sun ZX, Cheng Y. One-Step Formation both of C-N and of C-O Bonds of N-Alkoxyamides through NHC-Catalyzed Three-Component Reactions of Enals, Nitrosoarenes, and Enones. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200525] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Bondalapati S, Gogoi P, Indukuri K, Saikia AK. Diastereoselective Synthesis of Substituted Tetrahydrothiopyrans via (3,5)-Thionium–Ene Cyclization Reaction. J Org Chem 2012; 77:2508-12. [DOI: 10.1021/jo2023944] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Somasekhar Bondalapati
- Department
of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Paramartha Gogoi
- Department
of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Kiran Indukuri
- Department
of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Anil K. Saikia
- Department
of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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12
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Saha P, Bhunia A, Saikia AK. Synthesis of 2,3,5,6-tetrasubstituted tetrahydropyrans via (3,5)-oxonium-ene reaction. Org Biomol Chem 2012; 10:2470-81. [DOI: 10.1039/c2ob06832j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Lee K, Kim H, Hong J. Stereoselective Synthesis of Tetrahydropyrans through Tandem and Organocatalytic Oxa-Michael Reactions: Synthesis of the Tetrahydropyran Cores of ent-(+)-Sorangicin A. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101549] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Fabio K, Guillon C, Lacey CJ, Lu SF, Heindel ND, Ferris CF, Placzek M, Jones G, Brownstein MJ, Simon NG. Synthesis and evaluation of potent and selective human V1a receptor antagonists as potential ligands for PET or SPECT imaging. Bioorg Med Chem 2011; 20:1337-45. [PMID: 22249122 DOI: 10.1016/j.bmc.2011.12.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 12/05/2011] [Accepted: 12/07/2011] [Indexed: 01/17/2023]
Abstract
SRX246 is a potent, highly selective human vasopressin V1a antagonist that crosses the blood-brain barrier in rats. CNS penetration makes SRX246 an ideal candidate for potential radiolabeling and use in visualization and characterization of the role of the V1a receptor in multiple stress-related disorders. Before radiolabeling studies, cold reference analogs of SRX246 were prepared. This study describes the synthesis and in vitro screening for human V1a receptor binding and permeability of fluoro, iodo, and methyl reference compounds for SRX246 and the preparation of a tin precursor. For each compound, the potential utility of corresponding radiolabeled analogs for PET and SPECT imaging is discussed.
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Affiliation(s)
- Karine Fabio
- Dept. of Chemistry, Lehigh University, Bethlehem, PA 18015, USA
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15
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Hanthorn JJ, Pratt DA. Peroxyesters As Precursors to Peroxyl Radical Clocks. J Org Chem 2011; 77:276-84. [DOI: 10.1021/jo201862s] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jason J. Hanthorn
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston,
K7L 3N6 Canada
| | - Derek A. Pratt
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston,
K7L 3N6 Canada
- Department
of Chemistry, University of Ottawa, 10
Marie Curie, Ottawa, K1N 6N5
Canada
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16
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Nordqvist A, Björkelid C, Andaloussi M, Jansson AM, Mowbray SL, Karlén A, Larhed M. Synthesis of functionalized cinnamaldehyde derivatives by an oxidative Heck reaction and their use as starting materials for preparation of Mycobacterium tuberculosis 1-deoxy-D-xylulose-5-phosphate reductoisomerase inhibitors. J Org Chem 2011; 76:8986-98. [PMID: 21936546 PMCID: PMC3203620 DOI: 10.1021/jo201715x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
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Cinnamaldehyde derivatives were synthesized in good to excellent yields in one step by a mild and selective, base-free palladium(II)-catalyzed oxidative Heck reaction starting from acrolein and various arylboronic acids. Prepared α,β-unsaturated aldehydes were used for synthesis of novel α-aryl substituted fosmidomycin analogues, which were evaluated for their inhibition of Mycobacterium tuberculosis 1-deoxy-d-xylulose 5-phosphate reductoisomerase. IC50 values between 0.8 and 27.3 μM were measured. The best compound showed activity comparable to that of the most potent previously reported α-aryl substituted fosmidomycin-class inhibitor.
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Affiliation(s)
- Anneli Nordqvist
- Division of Organic Pharmaceutical Chemistry, Department of Medicinal Chemistry, Uppsala University, Biomedical Center, Box 574, SE-751 23 Uppsala, Sweden
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17
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Holla H, Labaied M, Pham N, Jenkins ID, Stuart K, Quinn RJ. Synthesis of antitrypanosomal 1,2-dioxane derivatives based on a natural product scaffold. Bioorg Med Chem Lett 2011; 21:4793-7. [PMID: 21757346 PMCID: PMC3228865 DOI: 10.1016/j.bmcl.2011.06.059] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 06/09/2011] [Accepted: 06/13/2011] [Indexed: 10/18/2022]
Abstract
A short practical synthesis of a new natural product based scaffold (6), based on antitrypanosomal and antimalarial compounds isolated from different Plakortis species is described. The scaffold contains a peroxide unit that is surprisingly stable to chemical manipulation elsewhere in the molecule, enabling it to be elaborated into a small library of derivatives. It is stable to ozonolysis, reductive work-up with dimethylsulfide and the Wittig reaction with stabilized phosphorus ylides. The scaffold along with its Wittig analogues has displayed low to sub-micro molar (0.2-3.3 μM) antitrypanosomal activity.
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Affiliation(s)
- Harish Holla
- Eskitis Institute, Griffith University, Brisbane, QLD4111, Australia
| | - Mehdi Labaied
- Seattle BioMed, 307 Westlake Ave. N, Seattle, WA 98109-5219, USA
| | - Ngoc Pham
- Eskitis Institute, Griffith University, Brisbane, QLD4111, Australia
| | - Ian D. Jenkins
- Eskitis Institute, Griffith University, Brisbane, QLD4111, Australia
| | - Kenneth Stuart
- Seattle BioMed, 307 Westlake Ave. N, Seattle, WA 98109-5219, USA
| | - Ronald J. Quinn
- Eskitis Institute, Griffith University, Brisbane, QLD4111, Australia
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Abstract
Iejimalide B, a structurally unique 24-membered polyene macrolide having a previously underutilized mode of anticancer activity, was synthesized according to a strategy employing Julia-Kocienski olefinations, a palladium-catalyzed Heck reaction, a palladium-catalyzed Marshall propargylation, a Keck-type esterification, and a palladium-catalyzed macrolide-forming, intramolecular Stille coupling of a highly complex cyclization substrate. The overall synthesis is efficient (19.5% overall yield for 15 linear steps) and allows for more practical scaled-up synthesis than previously reported strategies that differed in the order of assembly of key subunits and in the method of macrocyclization. The present synthesis paves the way for efficient preparation of analogues for drug development efforts.
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Affiliation(s)
- Qingshou Chen
- Department of Chemistry and Biochemistry and Harper Cancer Research Center, University of Notre Dame, Notre Dame, Indiana 46556
- Department of Medicinal Chemistry & Molecular Pharmacology, Laboratory for Chemical Biology & Drug Development, Bindley Bioscience Center at Purdue Discovery Park, West Lafayette, IN 47907-2057
| | - Dirk Schweitzer
- Department of Chemistry and Biochemistry and Harper Cancer Research Center, University of Notre Dame, Notre Dame, Indiana 46556
| | - John Kane
- Department of Chemistry and Biochemistry and Harper Cancer Research Center, University of Notre Dame, Notre Dame, Indiana 46556
| | - V. Jo Davisson
- Department of Medicinal Chemistry & Molecular Pharmacology, Laboratory for Chemical Biology & Drug Development, Bindley Bioscience Center at Purdue Discovery Park, West Lafayette, IN 47907-2057
| | - Paul Helquist
- Department of Chemistry and Biochemistry and Harper Cancer Research Center, University of Notre Dame, Notre Dame, Indiana 46556
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Noole A, Borissova M, Lopp M, Kanger T. Enantioselective Organocatalytic Aza-Ene-Type Domino Reaction Leading to 1,4-Dihydropyridines. J Org Chem 2011; 76:1538-45. [DOI: 10.1021/jo200095e] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Artur Noole
- Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Maria Borissova
- Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Margus Lopp
- Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Tõnis Kanger
- Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
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20
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Mendieta L, Picó A, Tarragó T, Teixidó M, Castillo M, Rafecas L, Moyano A, Giralt E. Novel peptidyl aryl vinyl sulfones as highly potent and selective inhibitors of cathepsins L and B. ChemMedChem 2011; 5:1556-67. [PMID: 20652927 DOI: 10.1002/cmdc.201000109] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Herein we present the design, synthesis, and evaluation of a structurally novel library of 20 peptidyl 3-aryl vinyl sulfones as inhibitors of cathepsins L and B. The building blocks, described here for the first time, were synthesized in a highly efficient and enantioselective manner, starting from 3-aryl-substituted allyl alcohols. The corresponding vinyl sulfones were prepared by a new approach, based on a combination of solid-phase peptide synthesis using the Fmoc/tBu strategy, followed by solution-phase coupling to the corresponding (R)-3-amino-3-aryl vinyl sulfones as trifluoroacetate salts. The inhibitory activity of the resulting compounds against cathepsins L and B was evaluated, and the compound exhibiting the best activity was selected for enzymatic characterization. Finally, docking studies were performed in order to identify key structural features of the aryl substituent.
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Affiliation(s)
- Laura Mendieta
- Institute for Research in Biomedicine of Barcelona, Barcelona Science Park, Baldiri Reixac 10, 08028 Barcelona, Spain
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21
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22
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Wang T, Ye S. Diastereoselective Synthesis of 6-Trifluoromethyl-5,6-dihydropyrans via Phosphine-Catalyzed [4 + 2] Annulation of α-Benzylallenoates with Ketones. Org Lett 2010; 12:4168-71. [DOI: 10.1021/ol101762z] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Tong Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Song Ye
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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23
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Effect of phase transfer chemistry, segmented fluid flow, and sonication on the synthesis of cinnamic esters. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.04.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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24
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Riveira MJ, La-Venia A, Mischne MP. Advances in bridged 1,2,4-trioxane-based chemistry. A divergent approach to oxa-heterocycles based on ambident reactivity. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2009.11.135] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Zvarec O, Avery TD, Taylor DK, Tiekink ER. Cyclisation of 1,2-dioxines containing tethered hydroxyl and carboxylic acid functionality: synthesis of tetrahydrofurans and dihydrofuran-2(3H)-ones. Tetrahedron 2010. [DOI: 10.1016/j.tet.2009.11.068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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26
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Flachsbarth B, Fritzsche M, Weldon PJ, Schulz S. Composition of the cloacal gland secretion of tuatara, Sphenodon punctatus. Chem Biodivers 2009; 6:1-37. [PMID: 19180453 DOI: 10.1002/cbdv.200800265] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The lipophilic content of the cloacal gland secretion of the tuatara (Sphenodon punctatus) was investigated. GC/EI-MS Analysis of CH2Cl2 extracts of the secretions revealed triacylglycerols as major glandular constituents. Twelve major medium-chain fatty acids were found to be conjugated to glycerol in different combinations, resulting in complex mixtures. These acids were identified by transesterification and subsequent derivatization of natural samples, and their structures were verified by synthesis. The natural glycerides contain predominantly three of the following acids: octanoic (A), (E)- and (Z)-oct-4-enoic (B and C, resp.), (4E,6Z)-octa-4,6-dienoic (tuataric acid; D), (R)-2,6-dimethylheptanoic (E), (R)-2,6-dimethylhept-5-enoic (F), (Z)-dec-4-enoic (G), (4Z,7Z)-deca-4,7-dienoic (H), (R)-3,7-dimethyloct-6-enoic (I), (R)-4,8-dimethylnon-7-enoic (J), (2R,6S)-2,6,10-trimethylundec-9-enoic (K), and (2R,5E)-2,6,10-trimethylundeca-5,9-dienoic acids (L). Several additional acids, occurring in trace amounts only, were tentatively identified by MS. The elucidation of the absolute configuration of the acids was performed by GC on chiral phases. Individual tuatara show specific mixtures of glycerides with up to 100 components. The individual mixtures may permit individual recognition because the bouquets seem to be stable over years.
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Affiliation(s)
- Birte Flachsbarth
- Institut für Organische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig
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Reddy UC, Bondalapati S, Saikia AK. Stereoselective One-Pot, Three-Component Synthesis of 4-Aryltetrahydropyran via Prins−Friedel−Crafts Reaction. J Org Chem 2009; 74:2605-8. [PMID: 19216514 DOI: 10.1021/jo802531h] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- U. C. Reddy
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - S. Bondalapati
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Anil K. Saikia
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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Chang L, Shang D, Xin J, Liu X, Feng X. Chiral N,N′-dioxide-iron(II) complexes catalyzed enantioselective oxa-Michael addition of α,β-unsaturated aldehydes. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.09.041] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Alacid E, Nájera C. Acrolein Diethyl Acetal: A Three-Carbon Homologating Reagent for the Synthesis of β-Arylpropanoates and Cinnamaldehydes by Heck Reaction Catalyzed by a Kaiser Oxime Resin Derived Palladacycle. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800047] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Nandurkar NS, Bhanage BM. Palladium bis(2,2,6,6-tetramethyl-3,5-heptanedionate) catalyzed Suzuki, Heck, Sonogashira, and cyanation reactions. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.02.038] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Synthesis of six-membered oxygenated heterocycles through carbon–oxygen bond-forming reactions. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.11.092] [Citation(s) in RCA: 212] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Maeda H, Nakagawa H, Mizuno K. TiO2-catalyzed photooxygenation of cinnamic acid derivatives via their radical cations. J Photochem Photobiol A Chem 2007. [DOI: 10.1016/j.jphotochem.2007.01.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Reiter M, Turner H, Gouverneur V. Intramolecular Hetero-Michael Addition of β-Hydroxyenones for the Preparation of Highly Substituted Tetrahydropyranones. Chemistry 2006; 12:7190-203. [PMID: 16819725 DOI: 10.1002/chem.200600415] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Structurally diverse beta-hydroxyenones are shown to undergo nonoxidative 6-endo-trig ring closure to form highly substituted tetrahydropyranones. Amberlyst-15, Al(ClO(4))(3) x 9 H(2)O and [Pd(MeCN)(4)](BF(4))(2) were found to be suitable catalysts for these intramolecular conjugate additions, preventing side reactions, such as dehydration or retroaldolisation. The use of [Pd(MeCN)(4)](BF(4))(2) is particularly effective, as this palladium-mediated reaction is under kinetic control and generates tri- and tetrasubstituted tetrahydropyranones with high levels of diastereocontrol. In the presence of the Lewis acid Al(ClO(4))(3) x 9 H(2)O, the reaction proceeded with a similar level of diastereocontrol; however, in contrast to [Pd(MeCN)(4)](BF(4))(2), this catalyst can promote enolisation. The palladium-mediated reaction was also found to be compatible with an enantioenriched beta-hydroxyenone substrate, giving no loss of enantiopurity upon ring closure. The most distinctive synthetic development to emerge from this new chemistry is the possibility to access tri- and tetrasubstituted 2,6-anti-tetrahydropyranones from anti-aldol precursors. These compounds are particularly difficult to access by using alternative methodologies. Two modes of activation were envisaged for the ring closure, involving metal coordination to either the C=C or C=O functional groups. Experimental results suggest that C=O coordination was the preferred mode of activation for reactions performed in the presence of Al(ClO(4))(3) x 9 H(2)O or [Pd(MeCN)(4)](BF(4))(2).
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Affiliation(s)
- Maud Reiter
- University of Oxford, Chemistry Research Laboratory 12, Mansfield Road, Oxford OX1 3TA, UK
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