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Becerra-Figueroa L, Movilla S, Prunet J, Miscione GP, Gamba-Sánchez D. An intramolecular oxa-Michael reaction on α,β-unsaturated α-amino-δ-hydroxycarboxylic acid esters. Synthesis of functionalized 1,3-dioxanes. Org Biomol Chem 2019; 16:1277-1286. [PMID: 29384169 DOI: 10.1039/c7ob03066e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly diastereoselective intramolecular oxa-Michael reaction on α,β-unsaturated α-amino-δ-hydroxycarboxylic acid esters is presented; 1,3-dioxanes functionalized in positions 2,4 and 6 were obtained in good yields and with excellent selectivities; an experimental and computational study was carried out to understand the reaction course in terms of yields and selectivities. This reaction proceeds under mild reaction conditions using highly electrophilic aldehydes and ketones.
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Affiliation(s)
- L Becerra-Figueroa
- Laboratory of Organic Synthesis, Bio and Organocatalysis, Chemistry Department, Universidad de los Andes, Cra 1 No. 18A-12 Q:305, Bogotá 111711, Colombia.
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4
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Affiliation(s)
- Hélène Pellissier
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313 13397, Marseille, France
| | - Hervé Clavier
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313 13397, Marseille, France
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7
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Rodríguez-Solla H, Concellón C, Tuya P, García-Granda S, Díaz MR. Samarium-Promoted Asymmetric Aldol-Tishchenko Reaction: Synthesis of Amino Acid-Derived 4-Amino-1,3-diols. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100952] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Meyer EVS, Holt JJ, Girard KR, Ballie MT, Bushnev AS, Lapp S, Menaldino DS, Arrendale RF, Reddy GP, Evers TJ, Howard RB, Culver DG, Liotta DC, Galinski MR, Natchus MG. Sphingolipid analogues inhibit development of malaria parasites. ACS Med Chem Lett 2012; 3:43-7. [PMID: 24900369 DOI: 10.1021/ml2002136] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Accepted: 12/06/2011] [Indexed: 11/28/2022] Open
Abstract
Plasmodium-infected erythrocytes have been shown to employ sphingolipids from both endogenous metabolism as well as existing host pools. Therapeutic agents that limit these supplies have thus emerged as intriguing, mechanistically distinct putative targets for the treatment of malaria infections. In an initial screen of our library of sphingolipid pathway modulators for efficacy against two strains of the predominant human malaria species Plasmodium falciparum and Plasmodium knowlesi, a series of orally available, 1-deoxysphingoid bases were found to possess promising in vitro antimalarial activity. To better understand the structural requirements that are necessary for this observed activity, a second series of modified analogues were prepared and evaluated. Initial pharmacokinetic assessments of key analogues were investigated to evaluate plasma and red blood cell concentrations in vivo.
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Affiliation(s)
- Esmeralda V. S. Meyer
- Emory Vaccine Center and Yerkes
National Primate Research Center, Emory University, Atlanta, Georgia 30329, United States
| | - Jason J. Holt
- Emory Institute for Drug Discovery (EIDD), 1515 Dickey Drive, Atlanta, Georgia
30322, United States
| | - Kathryn R. Girard
- Emory Vaccine Center and Yerkes
National Primate Research Center, Emory University, Atlanta, Georgia 30329, United States
| | - Mark T. Ballie
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia
30322, United States
| | - Anatoliy S. Bushnev
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia
30322, United States
| | - Stacey Lapp
- Emory Vaccine Center and Yerkes
National Primate Research Center, Emory University, Atlanta, Georgia 30329, United States
| | - David S. Menaldino
- Emory Institute for Drug Discovery (EIDD), 1515 Dickey Drive, Atlanta, Georgia
30322, United States
| | - Richard F. Arrendale
- Emory Institute for Drug Discovery (EIDD), 1515 Dickey Drive, Atlanta, Georgia
30322, United States
| | - G. Prabhakar Reddy
- Emory Institute for Drug Discovery (EIDD), 1515 Dickey Drive, Atlanta, Georgia
30322, United States
| | - Taylor J. Evers
- Emory Institute for Drug Discovery (EIDD), 1515 Dickey Drive, Atlanta, Georgia
30322, United States
| | - Randy B. Howard
- Emory Institute for Drug Discovery (EIDD), 1515 Dickey Drive, Atlanta, Georgia
30322, United States
| | - Deborah G. Culver
- Emory Institute for Drug Discovery (EIDD), 1515 Dickey Drive, Atlanta, Georgia
30322, United States
| | - Dennis C. Liotta
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia
30322, United States
- Emory Institute for Drug Discovery (EIDD), 1515 Dickey Drive, Atlanta, Georgia
30322, United States
| | - Mary R. Galinski
- Emory Vaccine Center and Yerkes
National Primate Research Center, Emory University, Atlanta, Georgia 30329, United States
- Emory
University School of Medicine,
Department of Medicine, Division of Infectious Diseases, Emory University, Atlanta, Georgia 30322, United States
| | - Michael G. Natchus
- Emory Institute for Drug Discovery (EIDD), 1515 Dickey Drive, Atlanta, Georgia
30322, United States
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