1
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Venugopal N, Moser J, Vojtíčková M, Císařová I, König B, Jahn U. Single Electron Transfer‐Induced Selective α‐Oxygenation of Glycine Derivatives. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100964] [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)
- Navyasree Venugopal
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
| | - Johannes Moser
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93040 Regensburg Germany
| | - Margaréta Vojtíčková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 8 12843 Prague 2 Czech Republic
| | - Burkhard König
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93040 Regensburg Germany
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
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2
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Kappler S, Karmann L, Prudel C, Herrmann J, Caddeu G, Müller R, Vollmar AM, Zahler S, Kazmaier U. Synthesis and Biological Evaluation of Modified Miuraenamides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801391] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sarah Kappler
- Organic Chemistry; Saarland University; Campus C4.2 66123 Saarbrücken Germany
| | - Lisa Karmann
- Organic Chemistry; Saarland University; Campus C4.2 66123 Saarbrücken Germany
| | - Cynthia Prudel
- Organic Chemistry; Saarland University; Campus C4.2 66123 Saarbrücken Germany
| | - Jennifer Herrmann
- Department Microbial Natural Products; Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS); Saarland University; Campus E8.1 66123 Saarbrücken Germany
| | - Giulia Caddeu
- Department of Pharmacy, Pharmaceutical Biology; Ludwig-Maximilians-University Munich); Butenandtstr. 5-13 81377 München Germany
| | - Rolf Müller
- Department Microbial Natural Products; Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS); Saarland University; Campus E8.1 66123 Saarbrücken Germany
| | - Angelika M. Vollmar
- Department of Pharmacy, Pharmaceutical Biology; Ludwig-Maximilians-University Munich); Butenandtstr. 5-13 81377 München Germany
| | - Stefan Zahler
- Department of Pharmacy, Pharmaceutical Biology; Ludwig-Maximilians-University Munich); Butenandtstr. 5-13 81377 München Germany
| | - Uli Kazmaier
- Organic Chemistry; Saarland University; Campus C4.2 66123 Saarbrücken Germany
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3
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Teegardin KA, Gotcher L, Weaver JD. Formation of Non-Natural α,α-Disubstituted Amino Esters via Catalytic Michael Addition. Org Lett 2018; 20:7239-7244. [PMID: 30387616 DOI: 10.1021/acs.orglett.8b03161] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The enolate monoanion of amino esters is explored, and the first catalytic Michael addition of α-amino esters is demonstrated. These studies indicate that the acidity of the αC-H is the primary factor determining reactivity. Thus, polyfluorophenylglycine amino esters yield novel α-amino esters in the presence of a catalytic amount of a guanidine-derived base and Michael acceptors. Reactivity requires an acidic N-H, which is accomplished using common protecting groups such as N-Bz, N-Boc, and N-Cbz. Calculations and labeling experiments provide insight into the governing principles in which a key C-to-N proton transfer occurs, resulting in an expansion of the scope to include a number of natural amino esters. The study culminates with a late-stage functionalization of peptidic γ-secretase inhibitor, DAPT.
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Affiliation(s)
- Kip A Teegardin
- Department of Chemistry , Oklahoma State University , Stillwater , Oklahoma 74078 , United States
| | - Lacey Gotcher
- Department of Chemistry , Oklahoma State University , Stillwater , Oklahoma 74078 , United States
| | - Jimmie D Weaver
- Department of Chemistry , Oklahoma State University , Stillwater , Oklahoma 74078 , United States
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4
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Servatius P, Kazmaier U. Total Synthesis of Trapoxin A, a Fungal HDAC Inhibitor from Helicoma ambiens. J Org Chem 2018; 83:11341-11349. [DOI: 10.1021/acs.joc.8b01569] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Phil Servatius
- Saarland University, Organic Chemistry I, Campus, Building C4.2, D-66123 Saarbrücken, Germany
| | - Uli Kazmaier
- Saarland University, Organic Chemistry I, Campus, Building C4.2, D-66123 Saarbrücken, Germany
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5
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Moon DJ, Al-Amin M, Lewis RS, Arnold KM, Yap GPA, Sims-Mourtada J, Chain WJ. A Strategy toward Icetexane Natural Products. European J Org Chem 2018; 2018:3348-3351. [PMID: 30923458 PMCID: PMC6433415 DOI: 10.1002/ejoc.201800707] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Indexed: 11/05/2022]
Abstract
Icetexane diterpenoids are richly complex polycyclic natural products that have been described with a variety of biological activities. We report here a general synthetic approach toward the 6-7-6 tricyclic core structure of these interesting synthetic targets based on a two-step enolate alkylation and ring-closing metathesis reaction sequence.
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Affiliation(s)
- Daniel J Moon
- Department of Chemistry & Biochemistry, University of Delaware, Newark, DE 19176, United States
| | - Mohammad Al-Amin
- Department of Chemistry & Biochemistry, University of Delaware, Newark, DE 19176, United States
| | - Robert S Lewis
- Department of Chemistry & Biochemistry, University of Delaware, Newark, DE 19176, United States
| | - Kimberly M Arnold
- Center for Translational Cancer Research, Helen F. Graham Cancer Center and Research Institute, Christiana Care Health Service, Newark, DE 19713, United States
- Department of Medical Laboratory Sciences, University of Delaware, Newark, DE 19176, United States
| | - Glenn P A Yap
- Department of Chemistry & Biochemistry, University of Delaware, Newark, DE 19176, United States
| | - Jennifer Sims-Mourtada
- Center for Translational Cancer Research, Helen F. Graham Cancer Center and Research Institute, Christiana Care Health Service, Newark, DE 19713, United States
- Department of Medical Laboratory Sciences, University of Delaware, Newark, DE 19176, United States
- Department of Biological Sciences, University of Delaware, Newark, DE 19176, United States
| | - William J Chain
- Department of Chemistry & Biochemistry, University of Delaware, Newark, DE 19176, United States
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6
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Eiden CG, Aldrich CC. Synthesis of a 3-Amino-2,3-dihydropyrid-4-one and Related Heterocyclic Analogues as Mechanism-Based Inhibitors of BioA, a Pyridoxal Phosphate-Dependent Enzyme. J Org Chem 2017; 82:7806-7819. [PMID: 28682613 DOI: 10.1021/acs.joc.7b00847] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Amiclenomycin (ACM) is a chemically unstable antibiotic with selective activity against Mycobacterium tuberculosis (Mtb) due to mechanism-based inhibition of BioA, a pyridoxal 5'-phosphate (PLP)-dependent aminotransferase. The first-generation ACM analogue dihydro-2-pyridone 1 maintains a similar bioactivation mechanism concluding with covalent labeling of the PLP cofactor. To improve on 1, we report the synthesis of dihydro-4-pyranone 2, dihydro-4-pyridone 3, and dihydro-4-thiopyranone 13, which were rationally designed to boost the rate of enzyme inactivation by lowering the pKa of their α-protons. We employed a unified synthetic strategy for construction of the desired heterocycles featuring α-amino ynone generation followed by 6-endo-dig cyclization. However, competitive 5-exo-dig cyclization, β-elimination of the ynone, and dimerization of the resultant α-amino carbonyls all complicated the syntheses of the dihydro-4-pyranone and dihydro-4-pyridone scaffolds. These obstacles were overcome by Teoc protection of the β-amino group in the assembly of 3 and Boc-MOM protection of the α-amino group in the synthesis of 2, enabling the efficient construction of 2 and 3 in seven steps from commercially available starting materials. Dihydro-4-pyridone 3 possessed improved enzyme inhibition as measured by its kinact value against BioA.
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Affiliation(s)
- Carter G Eiden
- Department of Medicinal Chemistry, University of Minnesota , 308 Harvard Street SE, 8-174 WDH, Minneapolis, Minnesota 55455, United States
| | - Courtney C Aldrich
- Department of Medicinal Chemistry, University of Minnesota , 308 Harvard Street SE, 8-174 WDH, Minneapolis, Minnesota 55455, United States
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7
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Mondal B, Roy B, Kazmaier U. Stereoselective Peptide Modifications via β-C(sp3)-H Arylations. J Org Chem 2016; 81:11646-11655. [DOI: 10.1021/acs.joc.6b01963] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Biplab Mondal
- Organische
Chemie, Universität des Saarlandes, Campus, Geb. C4.2, D-66123 Saarbruecken, Germany
- Department
of Chemistry, University of Kalyani, Kalyani, Nadia, WB 741235, India
| | - Brindaban Roy
- Department
of Chemistry, University of Kalyani, Kalyani, Nadia, WB 741235, India
| | - Uli Kazmaier
- Organische
Chemie, Universität des Saarlandes, Campus, Geb. C4.2, D-66123 Saarbruecken, Germany
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8
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Semi-synthesis of cyclosporins. Biochim Biophys Acta Gen Subj 2015; 1850:2121-44. [PMID: 25707381 DOI: 10.1016/j.bbagen.2015.02.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 02/11/2015] [Accepted: 02/13/2015] [Indexed: 12/28/2022]
Abstract
BACKGROUND Since its isolation in 1970, and discovery of its potent inhibitory activity on T-cell proliferation, cyclosporin A (CsA) has been shown to play a significant role in diverse fields of biology. Furthermore, chemical modification of CsA has led to analogs with distinct biological activities associated with its protein receptor family, cyclophilins. SCOPE OF REVIEW This review systematically collates the synthetic chemistry performed at each of the eleven amino acids, and provides examples of the utility of such transformations. The various modifications of CsA are traced from early, modest chemistry performed at the unique Bmt residue, through the remarkable use of a polyanion enolate that can be stereoselectively manipulated, and onto application of more recently developed olefin metathesis chemistry to prepare new CsA derivatives with unexpected biological activity. MAJOR CONCLUSIONS The myriad biological activities of CsA and its synthetic derivatives have inspired the development of new approaches to modify the CsA ring. In turn, these new CsA derivatives have served as tools in the discovery of new roles for cyclophilins. GENERAL SIGNIFICANCE This review provides information on the types of cyclosporin derivatives that are available to the many biologists working in this field, and should be of value to the medicinal chemist trying to discover drugs based on CsA. This article is part of a Special Issue entitled Proline-directed foldases: Cell signaling catalysts and drug targets.
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9
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Karmann L, Schultz K, Herrmann J, Müller R, Kazmaier U. Totalsynthese und biologische Evaluierung von Miuraenamiden. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411212] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Karmann L, Schultz K, Herrmann J, Müller R, Kazmaier U. Total syntheses and biological evaluation of miuraenamides. Angew Chem Int Ed Engl 2015; 54:4502-7. [PMID: 25688545 DOI: 10.1002/anie.201411212] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Indexed: 11/09/2022]
Abstract
The miuraenamides, relatively simple representatives of a class of cyclodepsipeptides with high antitumor activity, can be easily and flexibly obtained by the concept of peptide modification. A reaction sequence consisting of an aldol reaction, oxidation, and methylation of the glycine subunit of the cyclodepsipeptides allows the incorporation of the unusual α,β-unsaturated dehydroamino acid in one of the last steps of the synthesis.
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Affiliation(s)
- Lisa Karmann
- Institute for Organic Chemistry, Saarland University, P.O. box 151150, 66041 Saarbrücken (Germany) http://www.uni-saarland.de/lehrstuhl/kazmaier
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11
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Bayer A, Kazmaier U. Selective Peptide Modifications via Ruthenium-Catalyzed Allylic Alkylations. J Org Chem 2014; 79:8491-7. [DOI: 10.1021/jo501731y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anton Bayer
- Universität des Saarlandes, Institut für Organische Chemie, Campus, Geb. C4.2, D-66123 Saarbrücken, Germany
| | - Uli Kazmaier
- Universität des Saarlandes, Institut für Organische Chemie, Campus, Geb. C4.2, D-66123 Saarbrücken, Germany
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12
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Sweeney ZK, Fu J, Wiedmann B. From chemical tools to clinical medicines: nonimmunosuppressive cyclophilin inhibitors derived from the cyclosporin and sanglifehrin scaffolds. J Med Chem 2014; 57:7145-59. [PMID: 24831536 DOI: 10.1021/jm500223x] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The cyclophilins are widely expressed enzymes that catalyze the interconversion of the cis and trans peptide bonds of prolines. The immunosuppressive natural products cyclosporine A and sanglifehrin A inhibit the enzymatic activity of the cyclophilins. Chemical modification of both the cyclosporine and sanglifehrin scaffolds has produced many analogues that inhibit cyclophilins in vitro but have reduced immunosuppressive properties. Three nonimmunosuppressive cyclophilin inhibitors (alisporivir, SCY-635, and NIM811) have demonstrated clinical efficacy for the treatment of hepatitis C infection. Additional candidates are in various stages of preclinical development for the treatment of hepatitis C or myocardial reperfusion injury. Recent publications suggest that cyclophilin inhibitors may have utility for the treatment of diverse viral infections, inflammatory indications, and cancer. In this review, we document the structure-activity relationships of the nonimmunosuppressive cyclosporins and sanglifehrins in clinical and preclinical development. Aspects of the pharmacokinetic behavior and chemical biology of these drug candidates are also described.
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Affiliation(s)
- Zachary K Sweeney
- Novartis Institutes for BioMedical Research , 4560 Horton Street, Emeryville, California 94608, United States
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13
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Reich HJ. Role of Organolithium Aggregates and Mixed Aggregates in Organolithium Mechanisms. Chem Rev 2013; 113:7130-78. [DOI: 10.1021/cr400187u] [Citation(s) in RCA: 248] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Hans J. Reich
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
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14
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Peel M, Scribner A. Optimization of Cyclophilin Inhibitors for Use in Antiviral Therapy. SUCCESSFUL STRATEGIES FOR THE DISCOVERY OF ANTIVIRAL DRUGS 2013. [DOI: 10.1039/9781849737814-00384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Cyclophilins are members of the Propyl Peptidase Isomerase (PPIase) family of proteins and have recently been found to be required for efficient replication and/or infectivity of several viruses. Cyclosporine A (CsA), the prototypical inhibitor of cyclophilins has shown good activity against several key viruses, including HIV‐1 and HCV, however the immunosuppressive activity of CsA precludes its use as an effective anti‐viral agent. Structural information derived from the ternary complex formed by CsA, cyclophilin A and calcineurin has allowed the design of non‐immunosuppressive derivatives of CsA that retain, and in some cases improve, antiviral activity toward hepatitis C. Chemical modification of CsA has led to compounds with improved pharmacokinetic properties and with reduced drug‐drug interaction potential. Non‐CsA derived inhibitors of cyclophilin A have recently been identified and hold promise as synthetically more tractable leads for cyclophilin‐based discovery projects.
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Affiliation(s)
- Michael Peel
- SCYNEXIS Inc., Research Triangle Park, NC 27709 USA
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15
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Datta S, Bayer A, Kazmaier U. Highly stereoselective modifications of peptides via Pd-catalyzed allylic alkylation of internal peptide amide enolates. Org Biomol Chem 2013; 10:8268-75. [PMID: 22986919 DOI: 10.1039/c2ob26351c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pd-catalyzed allylations are excellent tools for stereoselective peptide modifications, showing several advantages compared to normal alkylations. Reactions of internal peptide amide enolates with Pd-allyl complexes proceed not only with high yields of up to 86%, they show also high regio- and diastereoselectivities (88-99%), giving rise to the trans-configured products. Therefore, this protocol is a powerful synthetic tool for the synthesis of natural product and drug molecules.
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Affiliation(s)
- Swarup Datta
- Institute for Organic Chemistry, Saarland University, Saarbruecken, Germany.
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Yamagishi T, Kinbara A, Okubo N, Sato S, Fukaya H. Diastereoselective synthesis of Pro-Phe phosphinyl dipeptide isosteres. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.10.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Datta S, Kazmaier U. Stereoselective palladium-catalyzed allylic alkylations of peptideamide enolates. Org Biomol Chem 2011; 9:872-80. [DOI: 10.1039/c0ob00628a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Magnus NA, Campagna S, Confalone PN, Savage S, Meloni DJ, Waltermire RE, Wethman RG, Yates M. Quaternary Chiral Center via Diastereoselective Enolate Amination Enables the Synthesis of an Anti-inflammatory Agent. Org Process Res Dev 2009. [DOI: 10.1021/op900255k] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nicholas A. Magnus
- Bristol-Myers Squibb Company, Process Research and Development, One Squibb Drive, New Brunswick, New Jersey 08903, U.S.A
| | - Silvio Campagna
- Bristol-Myers Squibb Company, Process Research and Development, One Squibb Drive, New Brunswick, New Jersey 08903, U.S.A
| | - Pat N. Confalone
- Bristol-Myers Squibb Company, Process Research and Development, One Squibb Drive, New Brunswick, New Jersey 08903, U.S.A
| | - Scott Savage
- Bristol-Myers Squibb Company, Process Research and Development, One Squibb Drive, New Brunswick, New Jersey 08903, U.S.A
| | - David J. Meloni
- Bristol-Myers Squibb Company, Process Research and Development, One Squibb Drive, New Brunswick, New Jersey 08903, U.S.A
| | - Robert E. Waltermire
- Bristol-Myers Squibb Company, Process Research and Development, One Squibb Drive, New Brunswick, New Jersey 08903, U.S.A
| | - Robert G. Wethman
- Bristol-Myers Squibb Company, Process Research and Development, One Squibb Drive, New Brunswick, New Jersey 08903, U.S.A
| | - Mathew Yates
- Bristol-Myers Squibb Company, Process Research and Development, One Squibb Drive, New Brunswick, New Jersey 08903, U.S.A
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O’Neil IA, Bhamra I. The synthesis of functionalised peptides using α-lithio quinuclidine N-oxide (Li-QNO). Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.03.105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Yamagishi T, Ichikawa H, Haruki T, Yokomatsu T. Diastereoselective Synthesis of α,β′-Disubstituted Aminomethyl(2-carboxyethyl)phosphinates as Phosphinyl Dipeptide Isosteres. Org Lett 2008; 10:4347-50. [DOI: 10.1021/ol801743d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takehiro Yamagishi
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Hiroyuki Ichikawa
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Terumitsu Haruki
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Tsutomu Yokomatsu
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
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21
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Mattsson S, Dahlström M, Karlsson S. A mild hydrolysis of esters mediated by lithium salts. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.02.029] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Bezencon O, Seebach D. Alkylations of Chiral Imidazolidinones Derived from Di- and Triglycine and Attempts at Cyclisations to Give Cycloisodityrosines. European J Org Chem 2006. [DOI: 10.1002/jlac.199619960805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Synthesis of novel chiral hydrobenzoin mono-tert-butyl ethers derived from m-hydrobenzoin and their application as chiral auxiliaries in the diastereoselective reduction of α-keto esters. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2005.06.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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24
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Seebach D, Bezençon O, Jaun B, Pietzonka T, Matthews JL, Kühnle FNM, Schweizer WB. FurtherC-Alkylations of CyclotetrapeptidesviaLithium and Phosphazenium (P4) Enolates: Discovery of a New Conformation. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19960790303] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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Seebach D, Ko SY, Kessler H, Köck M, Reggelin M, Schmieder P, Walkinshaw MD, Bölsterli JJ, Bevec D. Thiocyclosporins: Preparation, Solution and Crystal Structure, and Immunosuppressive Activity. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19910740833] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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26
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Seebach D, Kimmerlin T, Šebesta R, Campo MA, Beck AK. How we drifted into peptide chemistry and where we have arrived at. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.06.043] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Evers M, Barrière JC, Bashiardes G, Bousseau A, Carry JC, Dereu N, Filoche B, Henin Y, Sablé S, Vuilhorgne M, Mignani S. Synthesis of non-immunosuppressive cyclophilin-Binding cyclosporin A derivatives as potential anti-HIV-1 drugs. Bioorg Med Chem Lett 2003; 13:4415-9. [PMID: 14643337 DOI: 10.1016/j.bmcl.2003.09.042] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Original cyclosporin A (CsA) derivatives bearing various alkylthio side chains at the sarcosine residue 3 (R configuration) and for the most potent and selective compounds a 4'-hydroxyl group at the Me-Leucine residue 4 were prepared in one or two steps from commercially available CsA. The [2-(dimethyl or diethylamino)-ethylthio-Sar](3)-[(4'-OH)MeLeu](4)-CsA derivatives 3k and 3l displayed potent in vitro anti-HIV-1 (IC(50) approximately 46 nM) and low immunosuppressive activities (IC(50)>or=1500 nM).
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Affiliation(s)
- Michel Evers
- Aventis Pharma S.A., Centre de Recherche de Paris, 13 quai Jules Guesde, BP 14, 94403, Vitry-sur-Seine Cedex, France
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Depew KM, Marsden SP, Zatorska D, Zatorski A, Bornmann WG, Danishefsky SJ. Total Synthesis of 5-N-Acetylardeemin and Amauromine: Practical Routes to Potential MDR Reversal Agents. J Am Chem Soc 1999. [DOI: 10.1021/ja991558d] [Citation(s) in RCA: 215] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kristopher M. Depew
- Contribution from the Laboratory for Bioorganic Chemistry and the Preparative Synthesis Core Facility, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, Box 106, New York, New York 10021, and Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027
| | - Stephen P. Marsden
- Contribution from the Laboratory for Bioorganic Chemistry and the Preparative Synthesis Core Facility, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, Box 106, New York, New York 10021, and Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027
| | - Danuta Zatorska
- Contribution from the Laboratory for Bioorganic Chemistry and the Preparative Synthesis Core Facility, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, Box 106, New York, New York 10021, and Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027
| | - Andrzej Zatorski
- Contribution from the Laboratory for Bioorganic Chemistry and the Preparative Synthesis Core Facility, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, Box 106, New York, New York 10021, and Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027
| | - William G. Bornmann
- Contribution from the Laboratory for Bioorganic Chemistry and the Preparative Synthesis Core Facility, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, Box 106, New York, New York 10021, and Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027
| | - Samuel J. Danishefsky
- Contribution from the Laboratory for Bioorganic Chemistry and the Preparative Synthesis Core Facility, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, Box 106, New York, New York 10021, and Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027
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Hintermann T, Mathes C, Seebach D. Polylithiated β-Peptides:like-SelectiveC-Terminal Alkylation of Boc-β-HVal-β-HAla-β-HLeu-OMe. European J Org Chem 1998. [DOI: 10.1002/(sici)1099-0690(199811)1998:11<2379::aid-ejoc2379>3.0.co;2-v] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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A new approach to the synthesis of di- and tripeptides with unnatural amino acids using organozinc chemistry. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)00879-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Myers AG, Yang BH, Chen H, McKinstry L, Kopecky DJ, Gleason JL. Pseudoephedrine as a Practical Chiral Auxiliary for the Synthesis of Highly Enantiomerically Enriched Carboxylic Acids, Alcohols, Aldehydes, and Ketones. J Am Chem Soc 1997. [DOI: 10.1021/ja970402f] [Citation(s) in RCA: 498] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kazmaier U. Application of the Chelate-Enolate Claisen Rearrangement to The Synthesis of γ,δ-Unsaturated Amino Acids. ACTA ACUST UNITED AC 1997. [DOI: 10.1002/jlac.199719970203] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Boger DL, Chen JH, Saionz KW. (−)-Sandramycin: Total Synthesis and Characterization of DNA Binding Properties. J Am Chem Soc 1996. [DOI: 10.1021/ja952799y] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dale L. Boger
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
| | - Jyun-Hung Chen
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
| | - Kurt W. Saionz
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
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Synthesis of?,?-unsaturated amino acids via ester enolate Claisen rearrangement of chelated allylic esters. Amino Acids 1996; 11:283-99. [DOI: 10.1007/bf00807937] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/1996] [Accepted: 03/20/1996] [Indexed: 10/26/2022]
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Feigel M, Martinek G, Sauer WHB. What Do Ab Initio Calculations Predict for the Structure of Lithiated Azaenolates of Peptides? Chemistry 1996. [DOI: 10.1002/chem.19960020106] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Studer A, Hintermann T, Seebach D. Synthesis and First Applications of a New Chiral Auxiliary (tert-butyl 2-(tert-butyl)-5,5-dimethyl-4-oxoimidazolidine-1-carboxylate). Helv Chim Acta 1995. [DOI: 10.1002/hlca.19950780512] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Rück K. Asymmetrische Alkylierung von Amidenolaten mit Pseudoephedrin und Ephedrin als chiralen Auxiliaren – ungewöhnlicher Einfluß von Additiven? Angew Chem Int Ed Engl 1995. [DOI: 10.1002/ange.19951070406] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Frey O, Hoffmann M, Wittmann V, Kessler H, Uhlmann P, Vasella A. Preparation and Transmetallation of a Triphenylstannyl ?-D-Glucopyranoside: A highly stereoselective route to ?-D-C-glycosidesvia glycosyl dianions. Helv Chim Acta 1994. [DOI: 10.1002/hlca.19940770730] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Gerlach U, Haubenreich T, Hünig S. Einfluß der Reaktionsbedingungen auf die enantioselektive Protonierung von Lacton-Enolaten. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/cber.19941271022] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Maestro MA, Sefkow M, Seebach D. Total Synthesis of Myxovirescins, 3 Coupling of the Two Key Fragments and Last Steps to Myxovirescins A1 and M2. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/jlac.199419940714] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Bossler HG, Seebach D. Peptide Enolates.C-Alkylation of Glycine Residues in linear tri-, tetra-, and pentapeptidesvia dilithium azadienediolates. Helv Chim Acta 1994. [DOI: 10.1002/hlca.19940770424] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Seebach D, Bossler HG, Flowers R, Arnett EM. Calorimetric Measurements of the Complexation of Cyclosporin A, Ascomycin, Fujimycin, and Rapamycin with Lithium Chloride and with an Immunophilin. Helv Chim Acta 1994. [DOI: 10.1002/hlca.19940770129] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ager DJ, Froen DE, Klix RC, Zhi B, McIntosh JM, Thangarasa R. Studies on the alkylation of dipeptide substrates. Tetrahedron 1994. [DOI: 10.1016/s0040-4020(01)85061-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Peptidomimetics for Receptor Ligands?Discovery, Development, and Medical Perspectives. ACTA ACUST UNITED AC 1993. [DOI: 10.1002/anie.199312441] [Citation(s) in RCA: 675] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Giannis A, Kolter T. Peptidmimetica für Rezeptorliganden – Entdeckung, Entwicklung und medizinische Perspektiven. Angew Chem Int Ed Engl 1993. [DOI: 10.1002/ange.19931050905] [Citation(s) in RCA: 134] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Generation of α-acetoxyglycine residues within peptide chains: a new strategy for the modification of oligopeptides. Tetrahedron 1993. [DOI: 10.1016/s0040-4020(01)88040-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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