1
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Otake K, Ubukata M, Nagahashi N, Ogawa N, Hantani Y, Hantani R, Adachi T, Nomura A, Yamaguchi K, Maekawa M, Mamada H, Motomura T, Sato M, Harada K. Methyl and Fluorine Effects in Novel Orally Bioavailable Keap1-Nrf2 PPI Inhibitor. ACS Med Chem Lett 2023; 14:658-665. [PMID: 37197451 PMCID: PMC10184158 DOI: 10.1021/acsmedchemlett.3c00067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/05/2023] [Indexed: 05/19/2023] Open
Abstract
Oxidative stress is one of the causes of progression of chronic kidney disease (CKD). Activation of the antioxidant protein regulator Nrf2 by inhibition of the Keap1-Nrf2 protein-protein interaction (PPI) is of interest as a potential treatment for CKD. We report the identification of the novel and weak PPI inhibitor 7 with good physical properties by a high throughput screening (HTS) campaign, followed by structural and computational analysis. The installation of only methyl and fluorine groups successfully provided the lead compound 25, which showed more than 400-fold stronger activity. Furthermore, these dramatic substituent effects can be explained by the analysis of using isothermal titration calorimetry (ITC). Thus, the resulting 25, which exhibited high oral absorption and durability, would be a CKD therapeutic agent because of the dose-dependent manner for up-regulation of the antioxidant protein heme oxigenase-1 (HO-1) in rat kidneys.
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Affiliation(s)
- Kazuki Otake
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Minoru Ubukata
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Noboru Nagahashi
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Naoki Ogawa
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Yoshiji Hantani
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Rie Hantani
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Tsuyoshi Adachi
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Akihiro Nomura
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Keishi Yamaguchi
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Mariko Maekawa
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Hideaki Mamada
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Takahisa Motomura
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Motohide Sato
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
| | - Kazuhito Harada
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki 569-1125, Osaka, Japan
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2
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Silambarasan K, Kesavulu G, Reddy AA, Prasad KR. Diastereoselective Synthesis of trans-β-Amino Cyclohexyl Ketones and trans-3-Amino-4-acyl-tetrahydropyrans from Intramolecular C-Alkylation of ω-Halo-Substituted β-Sulfinamido Ketones. J Org Chem 2023; 88:2006-2022. [PMID: 36753743 DOI: 10.1021/acs.joc.2c02227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Reaction of ω-halo-substituted nonracemic β-sulfinamido ketones with NaH afforded the β-amino cyclohexyl ketones in excellent yields and diastereoselectivity, via an intramolecular C-alkylation, α to the carbonyl group. The reaction was found to be general and can be applied for the synthesis of different cyclohexyl amino ketones and tetrahydropyrans possessing amine and acyl substitutions.
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Affiliation(s)
| | - Gangarajulu Kesavulu
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | | | - Kavirayani R Prasad
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
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3
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(R)-N-Benzyl-N-(1-phenylethyl)cyclohexanamine. MOLBANK 2023. [DOI: 10.3390/m1561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The preparation and characterization of a new chiral tertiary dibenzylamine are described. These molecules are well known in the literature for their high neuropharmacological potential. The general synthetic pathway is based on asymmetric Aza–Michael addition of chiral (R)-N-benzyl-N-(α-methylbenzyl)amide to methyl cyclohex-1-en-carboxilate obtaining the β-amino ester, followed by carboxylic acid hydrolysis and subsequent Barton descarboxylation. Interestingly, it is a general synthetic procedure of a wide range of chiral amines by careful choice of insaturated esters and alkylation of the chiral enolate in the initial reaction. The new tertiary dibenzylamine molecule is fully characterized by NMR Spectroscopy (1H and 13C), as well by High-Resolution Mass Spectrometry and Infrared Spectroscopy.
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4
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(S)-N1,N3-Dibenzyl-1-cyclohexyl-N1,N3-bis((R)-1-phenylethyl)propane-1,3-diamine. MOLBANK 2023. [DOI: 10.3390/m1544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
(S)-N1,N3-dibenzyl-1-cyclohexyl-N1,N3-bis((R)-1-phenylethyl)propane-1,3-diamine was prepared in good yield by the reduction of the corresponding amide, which was obtained by the addition of a chiral lithium amide to an α,β-unsaturated ester. The target compound was fully characterized by NMR (1H and 13C), high-resolution mass spectrometry and polarimetry.
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5
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Abstract
This review deals with the synthesis of naturally occurring alkaloids containing partially or completely saturated pyrimidine nuclei. The interest in these compounds is associated with their structural diversity, high biological activity and toxicity. The review is divided into four parts, each of which describes a number of synthetic methodologies toward structurally different naturally occurring alkaloids containing saturated cyclic six-membered amidine, guanidine, aminal and urea (thiourea) moieties, respectively. The development of various synthetic strategies for the preparation of these compounds has remarkably increased during the past few decades. This is primarily due to the fact that some of these compounds are isolated only in limited quantities, which makes it practically impossible to study their full structural characteristics and biological activity.
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6
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Hidasová D, Pohl R, Císařová I, Jahn U. A Diastereoselective Catalytic Approach to Pentasubstituted Pyrrolidines by Tandem Anionic‐Radical Cross‐Over Reactions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101172] [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]
Affiliation(s)
- Denisa Hidasová
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 166 10 Prague 6 Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 166 10 Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science Charles University Hlavova 2030/8 128 43 Prague 2 Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 166 10 Prague 6 Czech Republic
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7
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Martínez-García L, Prado G, Góñez KV, Paleo MR, Sardina FJ. Stereoselective Synthesis of Hydrindane and Hydroazulene Derivatives by Transannular Cyclization of Nine- and Ten-Membered Carbocycles. J Org Chem 2021; 86:13684-13692. [PMID: 34519499 DOI: 10.1021/acs.joc.1c01751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of cis-fused bicyclic diene dicarboxylates with Li/naphthalene triggers a tandem ring-opening and transannular cyclization process that stereoselectively yields hydroazulenes and hydrindanes derivatives. Cyclononadienyl diesters, which can be isolated after the ring-opening step by judicious choice of the reaction conditions, undergo a tandem conjugate addition/intramolecular Michael addition upon treatment with chiral lithium amides to give bicyclic β-amino esters in a process where 4 contiguous stereocenters are formed with high diastereocontrol. A concise route toward the highly enantioenriched AEF ring core of the aconitine-type alkaloids has been developed as an application of this methodology. The starting cis-fused bicyclic dicarboxylates are easily prepared in one step by reductive alkylation of diisopropyl phthalate (Na/THF, followed by the appropriate bis-electrophiles).
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Affiliation(s)
- Lucas Martínez-García
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Gustavo Prado
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Karen V Góñez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - M Rita Paleo
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - F Javier Sardina
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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8
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Zhao F, Shu C, Young CM, Carpenter‐Warren C, Slawin AMZ, Smith AD. Enantioselective Synthesis of α-Aryl-β 2 -Amino-Esters by Cooperative Isothiourea and Brønsted Acid Catalysis. Angew Chem Int Ed Engl 2021; 60:11892-11900. [PMID: 33646631 PMCID: PMC8252622 DOI: 10.1002/anie.202016220] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Indexed: 01/07/2023]
Abstract
The synthesis of α-aryl-β2 -amino esters through enantioselective aminomethylation of an arylacetic acid ester in high yields and enantioselectivity via cooperative isothiourea and Brønsted acid catalysis is demonstrated. The scope and limitations of this process are explored (25 examples, up to 94 % yield and 96:4 er), with applications to the synthesis of (S)-Venlafaxine⋅HCl and (S)-Nakinadine B. Mechanistic studies are consistent with a C(1)-ammonium enolate pathway being followed rather than an alternative dynamic kinetic resolution process. Control studies indicate that (i) a linear effect between catalyst and product er is observed; (ii) an acyl ammonium ion can be used as a precatalyst; (iii) reversible isothiourea addition to an in situ generated iminium ion leads to an off-cycle intermediate that can be used as a productive precatalyst.
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Affiliation(s)
- Feng Zhao
- EaStCHEMSchool of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
| | - Chang Shu
- EaStCHEMSchool of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
| | - Claire M. Young
- EaStCHEMSchool of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
| | | | | | - Andrew D. Smith
- EaStCHEMSchool of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
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9
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Zhao F, Shu C, Young CM, Carpenter‐Warren C, Slawin AMZ, Smith AD. Enantioselective Synthesis of α‐Aryl‐β
2
‐Amino‐Esters by Cooperative Isothiourea and Brønsted Acid Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016220] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Feng Zhao
- EaStCHEM School of Chemistry University of St Andrews St Andrews Fife KY16 9ST UK
| | - Chang Shu
- EaStCHEM School of Chemistry University of St Andrews St Andrews Fife KY16 9ST UK
| | - Claire M. Young
- EaStCHEM School of Chemistry University of St Andrews St Andrews Fife KY16 9ST UK
| | | | | | - Andrew D. Smith
- EaStCHEM School of Chemistry University of St Andrews St Andrews Fife KY16 9ST UK
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10
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Davies SG, Fletcher AM, Roberts PM, Thomson JE. Mutual kinetic resolution: probing enantiorecognition phenomena and screening for kinetic resolution with racemic reagents. Org Biomol Chem 2021; 19:2847-2855. [PMID: 33720232 DOI: 10.1039/d0ob02151b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantiorecognition between a racemic reagent and a racemic substrate can be a valuable process in organic synthesis. This review highlights representative examples of this phenomenon and the use of mutual kinetic resolution as a method for screening of kinetic and/or parallel kinetic resolutions.
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Affiliation(s)
- Stephen G Davies
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK.
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11
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Eren NM, Orr SA, Thompson CD, Border EC, Stevens MA, Blair VL. Synthesis, Structure, and Solution Studies of Lithiated Allylic Phosphines and Phosphine Oxides. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nimrod M. Eren
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Samantha A. Orr
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | | | - Emily C. Border
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Michael A. Stevens
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Victoria L. Blair
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
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12
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Rogier J, Anani L, Coelho A, Massicot F, Machado-Rodrigues C, Behr JB, Vasse JL. Homoallylic amines as efficient chiral inducing frameworks in the conjugate addition of amides to α,β-unsaturated esters. An entry to enantio-enriched diversely substituted amines. Org Biomol Chem 2020; 18:2632-2636. [PMID: 31998930 DOI: 10.1039/d0ob00034e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The diastereoselective conjugate addition of secondary homoallylamines, obtained in the enantioenriched form via allylmetallation of imines, to α,β-unsaturated esters is reported. This method allows access to valuable building blocks as well as heterocyclic skeletons, providing tertiary amines bearing two chains integrating a stereogenic center adjacent to the nitrogen atom.
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Affiliation(s)
- Johann Rogier
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
| | - Lilia Anani
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
| | - Aurélien Coelho
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
| | - Fabien Massicot
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
| | - Carine Machado-Rodrigues
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
| | - Jean-Bernard Behr
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
| | - Jean-Luc Vasse
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France.
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13
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Manchado A, Ramos VE, Díez D, Garrido NM. Multicomponent Domino Reaction in the Asymmetric Synthesis of Cyclopentan[c]pyran Core of Iridoid Natural Products. Molecules 2020; 25:E1308. [PMID: 32182996 PMCID: PMC7144114 DOI: 10.3390/molecules25061308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/07/2020] [Accepted: 03/08/2020] [Indexed: 01/17/2023] Open
Abstract
The asymmetric synthesis of a compound with the cyclopentan[c]pyran core of iridoid natural products in four steps and 40% overall yield is reported. Our methodology includes a one-pot tandem domino reaction which provides a trisubstituted cyclopentane with five new completely determined stereocenters, which were determined through 2D homo and heteronuclear NMR and n.O.e. experiments on different compounds specially designed for this purpose, such as a dioxane obtained from a diol. Due to their pharmaceutical properties, including sedative, analgesic, anti-inflammatory, CNS depressor or anti-conceptive effects, this methodology to produce the abovementioned iridoid derivatives, is an interesting strategy in terms of new drug discovery as well as pharmaceutical development.
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Affiliation(s)
| | | | | | - Narciso M. Garrido
- Dpto. de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain; (A.M.); (V.E.R.); (D.D.)
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14
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Robinson H, Stillibrand J, Simelis K, Macdonald SJF, Nortcliffe A. Iridium-catalysed C–H borylation of β-aryl-aminopropionic acids. Org Biomol Chem 2020. [DOI: 10.1039/d0ob01495h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Iridium-catalysed C–H borylation of β-aryl-aminopropionic acid derivatives gives 3,5-functionalised protected β-aryl-aminopropionic acid boronates. One-pot borylation–functionalisation provides diverse building blocks for medicinal chemistry.
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Affiliation(s)
- Henry Robinson
- GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry
- School of Chemistry
- University of Nottingham
- Nottingham
- UK
| | - Joe Stillibrand
- GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry
- School of Chemistry
- University of Nottingham
- Nottingham
- UK
| | - Klemensas Simelis
- GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry
- School of Chemistry
- University of Nottingham
- Nottingham
- UK
| | | | - Andrew Nortcliffe
- GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry
- School of Chemistry
- University of Nottingham
- Nottingham
- UK
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15
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Kawafuchi H, Ma L, Hossain MI, Inokuchi T. O-AcylTEMPOs, a Modified and Fundamental, but Unexplored Carboxylic Derivative: Recent Progress in Synthetic Applications. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666191019102511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
O-Acylated 2,2,6,6-tetramethylpiperidine-N-oxyls (abbr. O-AcylTEMPOs) are
easily available and stable carboxylic derivatives, but their utility in organic synthesis is
unexplored in contrast to analogues, such as the N-methoxy-N-methylamides, known as
Weinreb amides. Especially, the O–N unit of the O-acylTEMPOs dictates a fairly electronwithdrawing
character for the carbonyl function. This enhances the reactivity and stability
of the resulting enolate ions. Accordingly, O-acylTEMPOs allow various transformations
and this review encompasses seven topics: (1) Reactivity of O-acylTEMPOs towards nucleophiles
and chemoselective transformations, (2) Reactivity of anionic species derived
from O-acylTEMPOs, (3) E-Selective Knoevenagel condensation of acetoacetylTEMPOs
and synthesis of furans, (4) Electrocyclization of 2,4-dienones derived from acetoacetic
derivatives and 2-substituted enals, (5) Diastereoselective addition of amide anion to O-(2-alkenoyl)TEMPOs
and β-amino acid synthesis, (6) Thermolysis of O-acylTEMPOs, and (7) Applications for Umpolung reactions
using O-benzoylTEMPOs, useful for the electrophilic amination of alkenes and alkynes.
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Affiliation(s)
- Hiroyuki Kawafuchi
- National Institute of Technology, Toyama College 13, Hongo-machi, Toyama, 939-8630, Japan
| | - Lijian Ma
- College of Chemistry, Sichuan University Chengdu 610064, China
| | - Md Imran Hossain
- Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, 419 Faser Hall, University, MS 38677, United States
| | - Tsutomu Inokuchi
- Graduate School of Natural Science and Technology, Okayama University, Tsushima-naka, Kita- Ku, 3-1-1, Okayama, 700-8530, Japan
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16
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Davies SG, Fletcher AM, Peters ME, Roberts PM, Thomson JE. The asymmetric synthesis of (S,S)-methylphenidate hydrochloride via ring-opening of an enantiopure aziridinium intermediate with phenylmagnesium bromide. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Shi Q, Greenwood NS, Meehan MC, Park H, Galella M, Sandhu B, Khandelwal P, Coombs JR, Gallagher WP, Guerrero CA, Hynes J, Dhar TGM, Gonzalez Bobes F, Marcoux D. One-Step Diastereoselective Pyrrolidine Synthesis Using a Sulfinamide Annulating Reagent. Org Lett 2019; 21:9198-9202. [PMID: 31647672 DOI: 10.1021/acs.orglett.9b03560] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This communication highlights the use of chiral sulfinamides as nitrogen nucleophiles in intermolecular aza-Michael reactions. When chiral sulfinamides are coupled to a chloroethyl group, the corresponding novel annulating reagents can be used to streamline the stereoselective synthesis of complex pyrrolidine-containing molecules. As a result, it has enabled a medicinal chemistry campaign for the synthesis of biologically active RORγt inverse agonists.
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Affiliation(s)
- Qing Shi
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
| | - Nathaniel S Greenwood
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
| | - Mariah C Meehan
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
| | - Hyunsoo Park
- Materials Science & Engineering , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Michael Galella
- Materials Science & Engineering , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Bhupinder Sandhu
- Materials Science & Engineering , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Purnima Khandelwal
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
| | - John R Coombs
- Chemical & Synthetic Development , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - William P Gallagher
- Chemical & Synthetic Development , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Carlos A Guerrero
- Chemical & Synthetic Development , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - John Hynes
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
| | - T G Murali Dhar
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
| | - Francisco Gonzalez Bobes
- Chemical & Synthetic Development , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - David Marcoux
- Discovery Chemistry , Bristol-Myers Squibb , Route 206 and Province Line Road , Princeton , New Jersey 08543 , United States
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18
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Hugelshofer CL, Palani V, Sarpong R. Calyciphylline B-type Alkaloids: Evolution of a Synthetic Strategy to (−)-Daphlongamine H. J Org Chem 2019; 84:14069-14091. [DOI: 10.1021/acs.joc.9b02223] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cedric L. Hugelshofer
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Vignesh Palani
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Richmond Sarpong
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
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19
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Harnisch H, Ilisz I, Fülöp F, Szakonyi Z, Kiss L, Péter A, Scriba GKE. Cyclodextrin-mediated capillary electrophoresis enantioseparation of dansylated β-amino acids with bicyclo[2.2.2]octane, bicyclo[3.1.1]heptane and cyclopenta[d][1,2]oxazole core structures. Electrophoresis 2019; 40:1931-1940. [DOI: 10.1002/elps.201800492] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/28/2019] [Accepted: 01/30/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Henrik Harnisch
- Department of Pharmaceutical and Medicinal Chemistry; School of Pharmacy; Friedrich Schiller University Jena; Jena Germany
| | - István Ilisz
- Institute of Pharmaceutical Analysis; Interdisciplinary Excellence Centre; University of Szeged; Szeged Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry; Interdisciplinary Excellence Centre; University of Szeged; Szeged Hungary
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry; Interdisciplinary Excellence Centre; University of Szeged; Szeged Hungary
| | - Lóránd Kiss
- Institute of Pharmaceutical Chemistry; Interdisciplinary Excellence Centre; University of Szeged; Szeged Hungary
| | - Antal Péter
- Institute of Pharmaceutical Analysis; Interdisciplinary Excellence Centre; University of Szeged; Szeged Hungary
| | - Gerhard K. E. Scriba
- Department of Pharmaceutical and Medicinal Chemistry; School of Pharmacy; Friedrich Schiller University Jena; Jena Germany
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G. Davies S, E. Holder K, M. Fletcher A, M. Roberts P, E. Thomson J, Zimmer D. Rapid Stereoselective Syntheses of Heteroarene-Fused Azacycles via Diastereoselective Conjugate Addition of Heteroaryl Substituted Lithium Amides. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)59] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Davies SG, Fletcher AM, Kennedy MS, Roberts PM, Thomson JE. Asymmetric synthesis of d-fagomine and its diastereoisomers. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Just D, Hernandez-Guerra D, Kritsch S, Pohl R, Císařová I, Jones PG, Mackman R, Bahador G, Jahn U. Lithium Chloride Catalyzed Asymmetric Domino Aza-Michael Addition/[3 + 2] Cycloaddition Reactions for the Synthesis of Spiro- and Bicyclic α,β,γ-Triamino Acid Derivatives. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800585] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- David Just
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences; Flemingovo nám. 2 166 10 Prague 6 Czech Republic
| | - Daniel Hernandez-Guerra
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences; Flemingovo nám. 2 166 10 Prague 6 Czech Republic
| | - Susanne Kritsch
- Fachbereich Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences; Flemingovo nám. 2 166 10 Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry; Faculty of Science; Charles University; Hlavova 2030/8 128 43 Prague 2 Czech Republic
| | - Peter G. Jones
- Fachbereich Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Richard Mackman
- Gilead Sciences, Inc.; 333 Lakeside Drive 94404 Foster City CA USA
| | - Gina Bahador
- Gilead Sciences, Inc.; 333 Lakeside Drive 94404 Foster City CA USA
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences; Flemingovo nám. 2 166 10 Prague 6 Czech Republic
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23
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Hidasová D, Janák M, Jahn E, Císařová I, Jones PG, Jahn U. Diastereoselective Radical Couplings Enable the Asymmetric Synthesis of anti
-β-Amino-α-hydroxy Carboxylic Acid Derivatives. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801139] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Denisa Hidasová
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic; Flemingovo nam. 2 166 10 Prague 6 Czech Republic
| | - Martin Janák
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic; Flemingovo nam. 2 166 10 Prague 6 Czech Republic
| | - Emanuela Jahn
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic; Flemingovo nam. 2 166 10 Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry; Faculty of Science; Charles University; Hlavova 2030/8 128 43 Prague 2 Czech Republic
| | - Peter G. Jones
- Fachbereich Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic; Flemingovo nam. 2 166 10 Prague 6 Czech Republic
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24
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Jian JH, Hsu CL, Syu JF, Kuo TS, Tsai MK, Wu PY, Wu HL. Access to β 2-Amino Acids via Enantioselective 1,4-Arylation of β-Nitroacrylates Catalyzed by Chiral Rhodium Catalysts. J Org Chem 2018; 83:12184-12191. [PMID: 30153730 DOI: 10.1021/acs.joc.8b00586] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The highly enantioselective conjugate addition of a variety of arylboronic acids to β-nitroacrylates is reported to provide optically active α-aryl β-nitropropionates in up to 70% yields and >99.5% ee's, which are useful building blocks for preparing chiral β2-amino acids. The applicability of this transformation is demonstrated by converting 3aa into the β2-amino acid 5 and transforming 3ap to β-amino ester 7 via reduction and reductive N-alkylation. The latter compound is a precursor for preparing ent-ipatasertib.
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Affiliation(s)
- Jia-Hong Jian
- Department of Chemistry , National Taiwan Normal University , No. 88, Section 4, Tingzhou Road , Taipei 11677 , Taiwan
| | - Chih-Lung Hsu
- Department of Chemistry , National Taiwan Normal University , No. 88, Section 4, Tingzhou Road , Taipei 11677 , Taiwan
| | - Jin-Fong Syu
- Department of Chemistry , National Taiwan Normal University , No. 88, Section 4, Tingzhou Road , Taipei 11677 , Taiwan
| | - Ting-Shen Kuo
- Department of Chemistry , National Taiwan Normal University , No. 88, Section 4, Tingzhou Road , Taipei 11677 , Taiwan
| | - Ming-Kang Tsai
- Department of Chemistry , National Taiwan Normal University , No. 88, Section 4, Tingzhou Road , Taipei 11677 , Taiwan
| | - Ping-Yu Wu
- Oleader Technologies, Co., Ltd. , 1F., No. 8, Aly. 29, Ln. 335, Chenggong Rd. , Hukou Township, 30345 Hsinchu , Taiwan
| | - Hsyueh-Liang Wu
- Department of Chemistry , National Taiwan Normal University , No. 88, Section 4, Tingzhou Road , Taipei 11677 , Taiwan
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25
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Manchado A, García M, Salgado MM, Díez D, Garrido NM. A novel Barton decarboxylation produces a 1,4-phenyl radical rearrangement domino reaction. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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26
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Zhi W, Li J, Zou D, Wu Y, Wu Y. Diastereoselective synthesis of β-amino ketone and acid derivatives by palladium-catalyzed conjugate addition. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Flynn MT, Blair VL, Andrews PC. Metal Acetylide Elimination: The Key Step in the Cascade Decomposition and Transformation of Metalated Propargylamines. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Matthew T. Flynn
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Victoria L. Blair
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Philip C. Andrews
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
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28
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Uno BE, Deibler KK, Villa C, Raghuraman A, Scheidt KA. Conjugate Additions of Amines to Maleimides via Cooperative Catalysis. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800160] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Brice E. Uno
- Department of Chemistry; Center for Molecular Innovation and Drug Discovery; Chemistry of Life Processes Institute; Northwestern University; 2145 Sheridan Road Evanston, IL 60208 USA
| | - Kristine K. Deibler
- Department of Chemistry; Center for Molecular Innovation and Drug Discovery; Chemistry of Life Processes Institute; Northwestern University; 2145 Sheridan Road Evanston, IL 60208 USA
| | | | | | - Karl A. Scheidt
- Department of Chemistry; Center for Molecular Innovation and Drug Discovery; Chemistry of Life Processes Institute; Northwestern University; 2145 Sheridan Road Evanston, IL 60208 USA
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29
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Uno BE, Dicken RD, Redfern LR, Stern CM, Krzywicki GG, Scheidt KA. Calcium(ii)-catalyzed enantioselective conjugate additions of amines. Chem Sci 2018; 9:1634-1639. [PMID: 29675209 PMCID: PMC5887857 DOI: 10.1039/c7sc05205g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 12/15/2017] [Indexed: 02/04/2023] Open
Abstract
The direct enantioselective chiral calcium(ii)·phosphate complex (Ca[CPA]2)-catalyzed conjugate addition of unprotected alkyl amines to maleimides was developed.
The direct enantioselective chiral calcium(ii)·phosphate complex (Ca[CPA]2)-catalyzed conjugate addition of unprotected alkyl amines to maleimides was developed. This mild catalytic system represents a significant advance towards the general convergent asymmetric amination of α,β-unsaturated electrophiles, providing medicinally relevant chiral aminosuccinimide products in high yields and enantioselectivities. Furthermore, the catalyst can be reused directly from a previously chromatographed reaction and still maintain both high yield and selectivity.
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Affiliation(s)
- Brice E Uno
- Department of Chemistry , Center for Molecular Innovation and Drug Discovery , Northwestern University , 2145 Sheridan Rd , Evanston , IL 60208 , USA .
| | - Rachel D Dicken
- Department of Chemistry , Center for Molecular Innovation and Drug Discovery , Northwestern University , 2145 Sheridan Rd , Evanston , IL 60208 , USA .
| | - Louis R Redfern
- Department of Chemistry , Center for Molecular Innovation and Drug Discovery , Northwestern University , 2145 Sheridan Rd , Evanston , IL 60208 , USA .
| | - Charlotte M Stern
- Department of Chemistry , Center for Molecular Innovation and Drug Discovery , Northwestern University , 2145 Sheridan Rd , Evanston , IL 60208 , USA .
| | - Greg G Krzywicki
- Department of Chemistry , Center for Molecular Innovation and Drug Discovery , Northwestern University , 2145 Sheridan Rd , Evanston , IL 60208 , USA .
| | - Karl A Scheidt
- Department of Chemistry , Center for Molecular Innovation and Drug Discovery , Northwestern University , 2145 Sheridan Rd , Evanston , IL 60208 , USA .
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31
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Csatayová K, Davies SG, Fletcher AM, Fowler TR, Kennedy MS, Roberts PM, Thomson JE. Asymmetric Syntheses of 3-Deoxy-3-aminosphingoid Bases: Approaches Based on Parallel Kinetic Resolution and Double Asymmetric Induction. J Org Chem 2017; 82:12447-12466. [PMID: 29022337 DOI: 10.1021/acs.joc.7b02233] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The asymmetric syntheses of a range of N- and O-protected 3-deoxy-3-aminosphingoid bases have been achieved using two complementary approaches. dl-Serine was converted to a racemic N,N-dibenzyl-protected γ-amino-α,β-unsaturated ester which was resolved using a parallel kinetic resolution (PKR) strategy upon reaction with a pseudoenantiomeric mixture of lithium (R)-N-benzyl-N-(α-methylbenzyl)amide and lithium (S)-N-3,4-dimethoxybenzyl-N-(α-methylbenzyl)amide, giving the corresponding enantio- and diastereoisomerically pure β,γ-diamino esters. Alternatively, elaboration of l-serine gave the corresponding enantiopure N,N-dibenzyl-protected γ-amino-α,β-unsaturated ester, and doubly diastereoselective conjugate addition of the antipodes of lithium N-benzyl-N-(α-methylbenzyl)amide was found to proceed under the dominant stereocontrol of the lithium amide reagent in both cases, thus augmenting the accessible range of β,γ-diamino esters. Both of these protocols were expanded to include in situ oxidation of the enolate formed upon conjugate addition, giving access to the corresponding α-hydroxy-β,γ-diamino esters. Elaboration of these β,γ-diamino and α-hydroxy-β,γ-diamino esters gave the protected forms of the 3-deoxy-3-aminosphingoid base targets.
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Affiliation(s)
- Kristína Csatayová
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - Stephen G Davies
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - Ai M Fletcher
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - Thomas R Fowler
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - Matthew S Kennedy
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - Paul M Roberts
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - James E Thomson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
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32
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Davies SG, Fletcher AM, Roberts PM, Thomson JE. The conjugate addition of enantiomerically pure lithium amides as chiral ammonia equivalents part III: 2012–2017. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.tetasy.2017.10.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Gimbert Y, Lesage D, Fressigné C, Maddaluno J. Lithium Amide Protected against Hydrolysis by Aggregated Lithium Halides: An MS + DFT Investigation. J Org Chem 2017; 82:8141-8147. [PMID: 28696698 DOI: 10.1021/acs.joc.7b01419] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Supported by mass spectrometry experiments, DFT computations indicate that the lithium amide of a 3-aminopyrrolidine (lithium benzhydryl(1-benzylpyrrolidin-3-yl)amide, 1-Li) is protected, up to a certain limit, against hydrolysis when it is aggregated with a strongly polar partner such as LiCl, LiBr, or MeLi.
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Affiliation(s)
- Yves Gimbert
- Université Grenoble Alpes (DCM) , UMR CNRS-UGA 5250 BP 53, Grenoble 38041 Cedex 9, France
| | - Denis Lesage
- Sorbonne Universités , UPMC Univ Paris 06 and CNRS, IPCM (UMR 8232), Paris F-75005, France
| | - Catherine Fressigné
- Normandie Université , UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), Rouen 76000, France
| | - Jacques Maddaluno
- Normandie Université , UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), Rouen 76000, France
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34
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Vargas-Caporali J, Juaristi E. Fundamental Developments of Chiral Phase Chromatography in Connection with Enantioselective Synthesis of β-Amino Acids. Isr J Chem 2017. [DOI: 10.1002/ijch.201700011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jorge Vargas-Caporali
- Departamento de Química; Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional Avenida IPN No. 2508; 07360 Ciudad de México México
| | - Eusebio Juaristi
- Departamento de Química; Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional Avenida IPN No. 2508; 07360 Ciudad de México México
- El Colegio Nacional; Luis González Obregón No. 23, Centro Histórico 06020 Ciudad de México México
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Orosz T, Grecsó N, Lajkó G, Szakonyi Z, Fülöp F, Armstrong DW, Ilisz I, Péter A. Liquid chromatographic enantioseparation of carbocyclic β-amino acids possessing limonene skeleton on macrocyclic glycopeptide-based chiral stationary phases. J Pharm Biomed Anal 2017; 145:119-126. [PMID: 28654779 DOI: 10.1016/j.jpba.2017.06.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 06/01/2017] [Accepted: 06/06/2017] [Indexed: 10/19/2022]
Abstract
Polar-ionic and reversed-phase high-performance liquid chromatographic separations of limonene-based cyclic β-amino acid enantiomers were carried out by using macrocyclic glycopeptide-based chiral selectors applying Chirobiotic T, TAG and R columns. The effects of additives, concentration of the co- and counter-ions and the temperature in polar-ionic mobile phase systems were studied. The influence of pH, MeOH content and alcohol additives were investigated in the reversed-phase mode. The difference in the change in standard enthalpy Δ(ΔH°), entropy Δ(ΔS°), and free energy Δ(ΔG°) was calculated from the linear van't Hoff plots derived from the ln α vs 1/T curves in the temperature range 5-40°C. Unusual temperature behavior was observed on Chirobiotic TAG for most of the analytes: decreased retention times were accompanied with increased separation factors with increasing temperature, and separation was entropically-driven. For two of the studied analytes enthalpically-driven enantioseparations were observed. The elution sequence was determined in all cases, but no general rule could be established.
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Affiliation(s)
- Tímea Orosz
- Department of Inorganic and Analytical Chemistry, University of Szeged, H-6720 Szeged, Dóm tér 7, Hungary
| | - Nóra Grecsó
- Department of Inorganic and Analytical Chemistry, University of Szeged, H-6720 Szeged, Dóm tér 7, Hungary; Institute of Pharmaceutical Chemistry, University of Szeged, H-6720 Szeged, Eötvös u. 6, Hungary
| | - Gyula Lajkó
- Department of Inorganic and Analytical Chemistry, University of Szeged, H-6720 Szeged, Dóm tér 7, Hungary; Institute of Pharmaceutical Chemistry, University of Szeged, H-6720 Szeged, Eötvös u. 6, Hungary
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry, University of Szeged, H-6720 Szeged, Eötvös u. 6, Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry, University of Szeged, H-6720 Szeged, Eötvös u. 6, Hungary
| | - Daniel W Armstrong
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX 76019-0065, USA
| | - István Ilisz
- Department of Inorganic and Analytical Chemistry, University of Szeged, H-6720 Szeged, Dóm tér 7, Hungary.
| | - Antal Péter
- Department of Inorganic and Analytical Chemistry, University of Szeged, H-6720 Szeged, Dóm tér 7, Hungary
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36
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Algera RF, Gupta L, Hoepker AC, Liang J, Ma Y, Singh KJ, Collum DB. Lithium Diisopropylamide: Nonequilibrium Kinetics and Lessons Learned about Rate Limitation. J Org Chem 2017; 82:4513-4532. [PMID: 28368117 PMCID: PMC6059656 DOI: 10.1021/acs.joc.6b03083] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The kinetics of lithium diisopropylamide (LDA) in tetrahydrofuran under nonequilibrium conditions are reviewed. These conditions correspond to a class of substrates in which the rates of LDA aggregation and solvation events are comparable to the rates at which various fleeting intermediates react with substrate. Substrates displaying these reactivities, by coincidence, happen to be those that react at tractable rates on laboratory time scales at -78 °C. In this strange region of nonlimiting behavior, rate-limiting steps are often poorly defined, sometimes involve deaggregation, and at other times include reaction with substrate. Changes in conditions routinely cause shifts in the rate-limiting steps, and autocatalysis is prevalent and can be acute. The studies are described in three distinct portions: (1) methods and strategies used to deconvolute complex reaction pathways, (2) the resulting conclusions about organolithium reaction mechanisms, and (3) perspectives on the concept of rate limitation reinforced by studies of LDA in tetrahydrofuran at -78 °C under nonequilibrium conditions.
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Affiliation(s)
- Russell F. Algera
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853–1301
| | - Lekha Gupta
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853–1301
| | - Alexander C. Hoepker
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853–1301
| | - Jun Liang
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853–1301
| | - Yun Ma
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853–1301
| | - Kanwal J. Singh
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853–1301
| | - David B. Collum
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853–1301
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Badiola E, Olaizola I, Vázquez A, Vera S, Mielgo A, Palomo C. β 2, 2 -Amino Acid N-Carboxyanhydrides Relying on Sequential Enantioselective C(4)-Functionalization of Pyrrolidin-2,3-diones and Regioselective Baeyer-Villiger Oxidation. Chemistry 2017; 23:8185-8195. [PMID: 28245062 DOI: 10.1002/chem.201700464] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Indexed: 12/12/2022]
Abstract
A catalytic enantioselective entry to β2, 2 -amino acids enabling their direct coupling with nucleophiles is described. The approach is based upon an effective bifunctional Brønsted base catalyzed construction of a quaternary carbon stereocenter at C4 position of pyrrolidin-2,3-diones. Subsequent regioselective Baeyer-Villiger oxidation of the resultant adducts gives β2, 2 -amino acid N-carboxyanhydrides as the reactive species, which can further react with nucleophiles. Following this strategy both, β2, 2 -amino acid derivatives with different functionalities at the newly created stereocenter, and spirocyclic structures can be efficiently prepared.
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Affiliation(s)
- Eider Badiola
- Departamento de Química Orgánica I, Universidad del País Vasco, Manuel Lardizábal, 3, 20018, Donostia-San Sebastián, Spain
| | - Iurre Olaizola
- Departamento de Química Orgánica I, Universidad del País Vasco, Manuel Lardizábal, 3, 20018, Donostia-San Sebastián, Spain
| | - Ana Vázquez
- Departamento de Química Orgánica I, Universidad del País Vasco, Manuel Lardizábal, 3, 20018, Donostia-San Sebastián, Spain
| | - Silvia Vera
- Departamento de Química Orgánica I, Universidad del País Vasco, Manuel Lardizábal, 3, 20018, Donostia-San Sebastián, Spain
| | - Antonia Mielgo
- Departamento de Química Orgánica I, Universidad del País Vasco, Manuel Lardizábal, 3, 20018, Donostia-San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Universidad del País Vasco, Manuel Lardizábal, 3, 20018, Donostia-San Sebastián, Spain
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Border EC, Maguire M, MacLellan JG, Andrews PC. Metal-Induced C–N Bond Cleavage in the Decomposition of Alkali (R,R)-Bis(α-methylbenzyl)amide Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00074] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emily C. Border
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Melissa Maguire
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Jonathan G. MacLellan
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Philip C. Andrews
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
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Nebe M, Opatz T. Synthesis of Piperidines and Dehydropiperidines. ADVANCES IN HETEROCYCLIC CHEMISTRY 2017. [DOI: 10.1016/bs.aihch.2016.10.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Harrison-Marchand A, Barozzino-Consiglio G, Maddaluno J. Chiral Lithium Amides: Tuning Asymmetric Synthesis on the Basis of Structural Parameters. CHEM REC 2016; 17:622-639. [PMID: 27996185 DOI: 10.1002/tcr.201600115] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Indexed: 11/06/2022]
Abstract
An overview on the structural arrangements adopted by Chiral Lithium Amides (CLAs), alone or in mixed complexes, is presented. These species are important reagents for asymmetric synthesis and understanding their organization is essential to improve their design and the reaction conditions.
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Affiliation(s)
- Anne Harrison-Marchand
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA, UMR 6014 & FR 3038), 76000, Rouen, France
| | | | - Jacques Maddaluno
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA, UMR 6014 & FR 3038), 76000, Rouen, France
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Martinková M, Gonda J, Jacková D. Simple marine 1-deoxysphingoid bases: biological activity and syntheses. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.10.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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42
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Brambilla M, Davies SG, Fletcher AM, Roberts PM, Thomson JE. Asymmetric syntheses of the 1-hydroxymethyl-2-hydroxy substituted pyrrolizidines (−)-macronecine, (−)-petasinecine, (−)-1- epi -macronecine, (+)-1- epi -petasinecine and (+)-2- epi -rosmarinecine. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Brambilla M, Davies SG, Fletcher AM, Roberts PM, Thomson JE, Zimmer D. Pyrrolizidines, indolizidines and quinolizidines via a double reductive cyclisation protocol: concise asymmetric syntheses of (+)-trachelanthamidine, (+)-tashiromine and (+)-epilupinine. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Barcellos JC, Vilela GVDA, Borges BH, Miranda MF, Dias AG, Costa PR. The syn-selective conjugate addition of amines to enoates derived from d-mannitol. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.06.017] [Citation(s) in RCA: 3] [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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Flynn MT, Stott R, Blair VL, Andrews PC. Loss of Chirality through Facile Lewis Base Mediated Aza-enolate Formation in Na and K (S)-N-(α-Methylbenzyl)methallylamides. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew T. Flynn
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria, Australia 3800
| | - Rachel Stott
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria, Australia 3800
| | - Victoria L. Blair
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria, Australia 3800
| | - Philip C. Andrews
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria, Australia 3800
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46
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Kafka F, Pohl R, Císařová I, Mackman R, Bahador G, Jahn U. N,2,3,4-Tetrasubstituted Pyrrolidines through Tandem Lithium Amide Conjugate Addition/Radical Cyclization/Oxygenation Reactions. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600621] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- František Kafka
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo namesti 2 16610 Prague Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo namesti 2 16610 Prague Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry; Faculty of Science; Charles University in Prague; Albertov 6 12843 Prague Czech Republic
| | - Richard Mackman
- Gilead Sciences, Inc.; 333 Lakeside Drive 94404 Foster City CA USA
| | - Gina Bahador
- Gilead Sciences, Inc.; 333 Lakeside Drive 94404 Foster City CA USA
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo namesti 2 16610 Prague Czech Republic
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48
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Buchman M, Csatayová K, Davies SG, Fletcher AM, Houlsby ITT, Roberts PM, Rowe SM, Thomson JE. Asymmetric Syntheses of (+)-Preussin B, the C(2)-Epimer of (−)-Preussin B, and 3-Deoxy-(+)-preussin B. J Org Chem 2016; 81:4907-22. [DOI: 10.1021/acs.joc.6b00362] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marek Buchman
- Department
of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, U.K
| | - Kristína Csatayová
- Department
of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, U.K
| | - Stephen G. Davies
- Department
of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, U.K
| | - Ai M. Fletcher
- Department
of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, U.K
| | - Ian T. T. Houlsby
- Department
of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, U.K
| | - Paul M. Roberts
- Department
of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, U.K
| | - Sam M. Rowe
- Department
of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, U.K
| | - James E. Thomson
- Department
of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, U.K
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49
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Davies SG, Fletcher AM, Frost AB, Kennedy MS, Roberts PM, Thomson JE. Trading N and O. Part 3: Synthesis of 1,2,3,4-tetrahydroisoquinolines from α-hydroxy-β-amino esters. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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50
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Border EC, Koutsaplis M, Andrews PC. The Strange Case of Sodium (S)-N-α-(Methylbenzyl)allylamide: Anion Rearrangement, Decomposition, and a Peculiar Propyl Addition. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b00979] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emily C. Border
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | | | - Philip C. Andrews
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
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