1
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Bartáček J, Chlumský K, Mrkvička J, Paloušová L, Sedlák M, Drabina P. Evaluation of the enantioselectivity of new chiral ligands based on imidazolidin-4-one derivatives. Beilstein J Org Chem 2024; 20:684-691. [PMID: 38590532 PMCID: PMC10999975 DOI: 10.3762/bjoc.20.62] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 03/14/2024] [Indexed: 04/10/2024] Open
Abstract
The new chiral ligands I-III based on derivatives of imidazolidin-4-one were synthesised and characterised. The catalytic activity and enantioselectivity of their corresponding copper(II) complexes were studied in asymmetric Henry reactions. It was found that the enantioselectivity of these catalysts is overall very high and depends on the relative configuration of the ligand used; cis-configuration of ligand affords the nitroaldols with major enantiomer S- (up to 97% ee), whereas the application of ligands with trans-configuration led to nitroaldols with major R-enantiomer (up to 96% ee). The "proline-type" ligand IV was also tested in asymmetric aldol reactions. Under the optimised reaction conditions, aldol products with enantioselectivities of up to 91% ee were obtained.
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Affiliation(s)
- Jan Bartáček
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Karel Chlumský
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Jan Mrkvička
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Lucie Paloušová
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Miloš Sedlák
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Pavel Drabina
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
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2
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Trajkovic M, Pavlovic M, Bihelovic F, Ferjancic Z, Saicic RN. Total Synthesis of ( + )-Swainsonine, (–)- Swainsonine, ( + )-8- epi- Swainsonine and ( + )- Dideoxy-Imino-Lyxitol by an Organocatalyzed Aldolization/Reductive Amination Sequence. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221091672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A tactical combination of either ( S)- or ( R)-proline catalyzed aldol reaction followed by intramolecular reductive amination enabled the synthesis of a chiral pyrrolidine derivative with 3 contiguous stereocenters in only 2 synthetic steps, starting from achiral precursors. This product, obtainable in both enantiomeric forms, was further exploited as a common intermediate in total syntheses of the biologically active iminosugars: ( + )-swainsonine, (–)-swainsonine, ( + )-8- epi-swainsonine, and ( + )-dideoxy-imino-lyxitol.
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Affiliation(s)
- Milos Trajkovic
- University of Belgrade - Faculty of Chemistry, Belgrade, Serbia
| | - Milos Pavlovic
- University of Belgrade - Faculty of Chemistry, Belgrade, Serbia
| | - Filip Bihelovic
- University of Belgrade - Faculty of Chemistry, Belgrade, Serbia
| | | | - Radomir N Saicic
- University of Belgrade - Faculty of Chemistry, Belgrade, Serbia
- Serbian Academy of Sciences and Arts, Belgrade, Serbia
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3
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Funabiki K, Gotoh T, Kani R, Inuzuka T, Kubota Y. Highly diastereo- and enantioselective organocatalytic synthesis of trifluoromethylated erythritols based on the in situ generation of unstable trifluoroacetaldehyde. Org Biomol Chem 2021; 19:1296-1304. [PMID: 33315035 DOI: 10.1039/d0ob02067b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thus far, only a few methods for the asymmetric synthesis of erythritols bearing a trifluoromethyl group have been developed, and these methods present serious disadvantages such as the requirement of multiple steps for the preparation of their starting materials, low stereoselectivity, and the use of highly toxic reagents. Herein, we have developed a highly diastereo- and enantioselective organocatalytic method to synthesise erythritols bearing a trifluoromethyl group using (1) a commercially available organocatalyst to produce unstable trifluoroacetaldehyde in situ from its corresponding hemiacetal, followed by the simultaneous asymmetric carbon-carbon bond-forming reaction of the organocatalyst with an in situ-generated chiral enamine derived from 2,2-dimethyl-1,3-dioxane-5-one to obtain the corresponding aldol product in good yield (65-80%) with high diastereoselectivity (up to 94% de) and excellent enantioselectivity (up to >98% ee), (2) the highly diastereoselective reduction of the ketone moiety in the aldol product (up to 98% de), and (3) the deprotection of the acetal moiety.
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Affiliation(s)
- Kazumasa Funabiki
- Department of Chemistry and Biomolecular Science, Gifu University, 1-1, Yanagido, Gifu 501-1193, Japan.
| | - Toshiya Gotoh
- Department of Chemistry and Biomolecular Science, Gifu University, 1-1, Yanagido, Gifu 501-1193, Japan.
| | - Ryunosuke Kani
- Department of Chemistry and Biomolecular Science, Gifu University, 1-1, Yanagido, Gifu 501-1193, Japan.
| | - Toshiyasu Inuzuka
- Division of Instrumental Analysis, Life Science Research Centre, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yasuhiro Kubota
- Department of Chemistry and Biomolecular Science, Gifu University, 1-1, Yanagido, Gifu 501-1193, Japan.
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4
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Wang J, Zhang Y, Zhu Y, Liu J, Chen Y, Cao X, Yang Y. Total Synthesis and Immunological Evaluation of the Tri-d-glycero-d-manno-heptose Antigen of the Lipopolysaccharide as a Vaccine Candidate against Helicobacter pylori. Org Lett 2020; 22:8780-8785. [DOI: 10.1021/acs.orglett.0c03105] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Junchang Wang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yiyue Zhang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yirong Zhu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Junru Liu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yan Chen
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xin Cao
- Zhongshan Hospital Institute of Clinical Science, Fudan University, Shanghai Medical College, 179 Fenglin Road, Shanghai 200032, China
| | - You Yang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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5
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Abstract
The proline-catalysed asymmetric aldol reaction is usually carried out in highly dipolar aprotic solvents (dimethylsulfoxide, dimethylformamide, acetonitrile) where proline presents an acceptable solubility. Protic solvents are generally characterized by poor stereocontrol (e.g., methanol) or poor reactivity (e.g., water). Here, we report that water/methanol mixtures are exceptionally simple and effective reaction media for the intermolecular organocatalytic aldol reaction using the simple proline as the catalyst.
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6
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Shimogaki M, Takeshima A, Kano T, Maruoka K. Enantioselective Synthesis of Monosaccharide Analogues by Two-Step Sequential Enamine Catalysis: Benzoyloxylation and Aldol Reaction. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Mio Shimogaki
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo 606-8502 Kyoto Japan
| | - Aika Takeshima
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo 606-8502 Kyoto Japan
| | - Taichi Kano
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo 606-8502 Kyoto Japan
| | - Keiji Maruoka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo 606-8502 Kyoto Japan
- Graduate School of Pharmaceutical Sciences; Graduate School of Science; Kyoto University; Sakyo 606-8501 Kyoto Japan
- School of Chemical Engineering and Light Industry; Graduate School of Science; Guangdong University of Technology; 510006 Guangzhou China
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7
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Wang X, Chen Y, Wang J, Yang Y. Total Synthesis of the Trisaccharide Antigen of the Campylobacter jejuni RM1221 Capsular Polysaccharide via de Novo Synthesis of the 6-Deoxy-d- manno-heptose Building Blocks. J Org Chem 2019; 84:2393-2403. [PMID: 30691266 DOI: 10.1021/acs.joc.8b02394] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A de novo approach utilizing the d-proline-catalyzed and LDA-promoted aldol reactions as key steps for the preparation of differentiated-protected 6-deoxy-d- manno-heptose building blocks was developed. PPh3AuBAr4F-catalyzed glycosylation with the 6-deoxy-d- manno-heptosyl o-hexynylbenzoate as donor was demonstrated as a direct and practical method for the stereoselective synthesis of the β-linked 6-deoxy-d- manno-heptoside as the major product. Coupling of the 6-deoxy-α-d- manno-heptosyl H-phosphonate with the 3-hydroxyl disaccharide acceptor based on H-phosphonate chemistry was described for the construction of the trisaccharide skeleton with the acid-labile phosphodiester linkage. Finally, first total synthesis of the unique trisaccharide antigen of the capsular polysaccharide of Campylobacter jejuni RM1221 that belongs to HS:53 serotype complex was accomplished for further evaluation as vaccine candidate against C. jejuni RM1221 infection.
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Affiliation(s)
- Xiaoman Wang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
| | - Yan Chen
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
| | - Junchang Wang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
| | - You Yang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
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8
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Yasuda M, Saga Y, Tokunaga T, Itoh S, Aoki S. Stereoselective aldol reactions of dihydroxyacetone derivatives catalyzed by chiral Zn2+ complexes. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.12.060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Firouzi-Haji R, Maleki A. L-Proline-Functionalized Fe3
O4
Nanoparticles as an Efficient Nanomagnetic Organocatalyst for Highly Stereoselective One-Pot Two-Step Tandem Synthesis of Substituted Cyclopropanes. ChemistrySelect 2019. [DOI: 10.1002/slct.201802608] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Razieh Firouzi-Haji
- Catalysts and Organic Synthesis Research Laboratory; Department of Chemistry; Iran University of Science and Technology; Tehran 16846-13114 Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory; Department of Chemistry; Iran University of Science and Technology; Tehran 16846-13114 Iran
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10
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Maleki A, Firouzi-Haji R. L-Proline functionalized magnetic nanoparticles: A novel magnetically reusable nanocatalyst for one-pot synthesis of 2,4,6-triarylpyridines. Sci Rep 2018; 8:17303. [PMID: 30470821 PMCID: PMC6251865 DOI: 10.1038/s41598-018-35676-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 11/09/2018] [Indexed: 12/03/2022] Open
Abstract
In this work, an efficient method for the immobilization of L-proline on magnetic nanoparticles was offered and evaluated as a recoverable magnetic nanocatalyst for synthesis of 2,4,6-triarylpyridines through one-pot three-component reaction of acetophenone, aryl aldehydes and ammonium acetate. This article is the first report of the catalytic application of L-proline functionalized magnetic nanoparticles in organic reactions as a magnetic nanocatalyst. This novel magnetic nanocatalyst proved to be effective and provided the products in high to excellent yield under solvent-free conditions. The structure of obtained nanoparticles was characterized by Fourier transform infrared spectrophotometry (FT-IR), field-emission scanning electron microscopy (FE-SEM), thermogravimetric analysis (TGA) and energy-dispersive X-ray spectroscopy (EDX). TGA result revealed that it is stable up to 200 °C for using as a catalyst in organic reactions. FE-SEM image of the synthesized nanocatalyst showed that it has nearly core-shell spherical shape and uniform size distribution with an average size about 80 nm. Moreover, the catalyst could be easily recovered by facile separation by magnetic forces and recycled for several times without significant loss of its catalytic activity. The benefits of this study are simplicity, nontoxicity, low cost, simple workup, and an environmentally benign nature.
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Affiliation(s)
- Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran.
| | - Razieh Firouzi-Haji
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
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11
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Rai P, Sagir H, Kumar A, B. Yadav V, R. Siddiqui I. Organocatalyzed Synthesis of Medicinally Important Chromeno[2, 3-d]pyrimidine-triones in Biodegradable Reaction Medium. ChemistrySelect 2018. [DOI: 10.1002/slct.201702483] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Pragati Rai
- Laboratory of Green Synthesis; Department of Chemistry, University of Allahabad; Allahabad-211002 India
| | - Hozeyfa Sagir
- Laboratory of Green Synthesis; Department of Chemistry, University of Allahabad; Allahabad-211002 India
| | - Akhilesh Kumar
- Laboratory of Green Synthesis; Department of Chemistry, University of Allahabad; Allahabad-211002 India
| | - Vijay B. Yadav
- Laboratory of Green Synthesis; Department of Chemistry, University of Allahabad; Allahabad-211002 India
| | - I. R. Siddiqui
- Laboratory of Green Synthesis; Department of Chemistry, University of Allahabad; Allahabad-211002 India
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12
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Yamashita Y, Yasukawa T, Yoo WJ, Kitanosono T, Kobayashi S. Catalytic enantioselective aldol reactions. Chem Soc Rev 2018; 47:4388-4480. [DOI: 10.1039/c7cs00824d] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Recent developments in catalytic asymmetric aldol reactions have been summarized.
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Affiliation(s)
- Yasuhiro Yamashita
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Tomohiro Yasukawa
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Woo-Jin Yoo
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Taku Kitanosono
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Shū Kobayashi
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
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13
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Chen Y, Wang X, Wang J, Yang Y. Synthesis of D- manno-heptulose via a cascade aldol/hemiketalization reaction. Beilstein J Org Chem 2017; 13:795-799. [PMID: 28546836 PMCID: PMC5433184 DOI: 10.3762/bjoc.13.79] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 04/12/2017] [Indexed: 11/25/2022] Open
Abstract
A [4 + 3] synthesis of D-manno-heptulose is described. The cascade aldol/hemiketalization reaction of a C4 aldehyde with a C3 ketone provides the differentially protected ketoheptose building block, which can be further reacted to furnish target D-manno-heptulose.
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Affiliation(s)
- Yan Chen
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xiaoman Wang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Junchang Wang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - You Yang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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14
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Sánchez D, Carneros H, Castro-Alvarez A, Llàcer E, Planas F, Vilarrasa J. Further insights into the organocatalytic reaction of 2,2-dimethyl-1,3-dioxan-5-one with α-silyloxy aldehydes. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.10.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Kozhemyakin YY, Kozyrkov YY. Proline-catalyzed aldol reaction of acetone with (R)- and (S)-2,3-O-alkylideneglyceraldehydes. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2015. [DOI: 10.1134/s107042801504017x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Synthesis of octitols and the respective amino-derivatives from 'organo-aldols'. Carbohydr Res 2015; 403:98-103. [PMID: 25130931 DOI: 10.1016/j.carres.2014.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 07/02/2014] [Accepted: 07/07/2014] [Indexed: 11/22/2022]
Abstract
Two diastereoisomeric keto-octoses, obtained in the reaction of 2,3:4,5-diacetone-D-arabinose with protected dihydroxyacetone catalyzed with L- or D-proline, were converted into octitols by stereoselective reduction of the carbonyl group with zinc borohydride and final deprotection. The study on the preparation of the respective amino-derivatives by reductive amination of these organo-adducts is presented; stereochemical aspects of these processes are discussed.
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17
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Enantioselective aldol reactions with aqueous 2,2-dimethoxyacetaldehyde organocatalyzed by binam-prolinamides under solvent-free conditions. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.08.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Trajkovic M, Balanac V, Ferjancic Z, Saicic RN. Total synthesis of (+)-swainsonine and (+)-8-epi-swainsonine. RSC Adv 2014. [DOI: 10.1039/c4ra11978a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Enantioselective total synthesis of (+)-swaisonine that hinges on a combination of organocatalyzed aldolization and reductive amination, affords the title compound in 9 steps, with 24% overall yield.
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Affiliation(s)
- Milos Trajkovic
- Faculty of Chemistry
- University of Belgrade
- 11158 Belgrade 118, Serbia
| | - Vesna Balanac
- Faculty of Chemistry
- University of Belgrade
- 11158 Belgrade 118, Serbia
| | - Zorana Ferjancic
- Faculty of Chemistry
- University of Belgrade
- 11158 Belgrade 118, Serbia
| | - Radomir N. Saicic
- Faculty of Chemistry
- University of Belgrade
- 11158 Belgrade 118, Serbia
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19
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Bergeron-Brlek M, Teoh T, Britton R. A tandem organocatalytic α-chlorination-aldol reaction that proceeds with dynamic kinetic resolution: a powerful tool for carbohydrate synthesis. Org Lett 2013; 15:3554-7. [PMID: 23819733 DOI: 10.1021/ol401370b] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A tandem, proline-catalyzed α-chlorination/aldol reaction is described that involves a dynamic kinetic resolution of α-chloroaldehyde intermediates. The resulting syn-chlorohydrins are produced with good to excellent diastereoselectivity in high enantiopurity and provide new opportunities for the synthesis of carbohydrates.
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Affiliation(s)
- Milan Bergeron-Brlek
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada
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20
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Simon G, Eljezi T, Legeret B, Charmantray F, Castillo JA, Guérard-Hélaine C, Lemaire M, Bouzon M, Marlière P, Hélaine V, Hecquet L. Synthesis of Specially Designed Probes to Broaden Transketolase Scope. ChemCatChem 2013. [DOI: 10.1002/cctc.201200479] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Florence GJ, Wlochal J. Synthesis of the Originally Proposed Structure of Palmerolide C. Chemistry 2012; 18:14250-4. [DOI: 10.1002/chem.201203067] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Indexed: 01/23/2023]
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22
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Bisai V, Bisai A, Singh VK. Enantioselective organocatalytic aldol reaction using small organic molecules. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.099] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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23
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Enantioselective organocatalyzed functionalization of benzothiophene and thiophenecarbaldehyde derivatives. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.04.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Peña J, Moro RF, Basabe P, Marcos IS, Díez D. Solvent free l-proline-catalysed domino Knoevenagel/6π-electrocyclization for the synthesis of highly functionalised 2H-pyrans. RSC Adv 2012. [DOI: 10.1039/c2ra21306k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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25
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Monrad RN, Madsen R. Modern methods for shortening and extending the carbon chain in carbohydrates at the anomeric center. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.08.047] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Štambaský J, Kapras V, Štefko M, Kysilka O, Hocek M, Malkov AV, Kočovský P. A Modular Approach to Aryl-C-ribonucleosides via the Allylic Substitution and Ring-Closing Metathesis Sequence. A Stereocontrolled Synthesis of All Four α-/β- and d-/l-C-Nucleoside Stereoisomers. J Org Chem 2011; 76:7781-803. [DOI: 10.1021/jo201110z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jan Štambaský
- Department of Chemistry, WestChem, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K
| | - Vojtěch Kapras
- Department of Chemistry, WestChem, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K
| | - Martin Štefko
- Institute of Organic Chemistry and Biochemistry, Gilead Sciences & IOCB Research Center, Academy of Sciences of the Czech Republic, CZ-16610, Prague 6, Czech Republic
| | - Ondřej Kysilka
- Department of Chemistry, WestChem, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K
| | - Michal Hocek
- Institute of Organic Chemistry and Biochemistry, Gilead Sciences & IOCB Research Center, Academy of Sciences of the Czech Republic, CZ-16610, Prague 6, Czech Republic
| | - Andrei V. Malkov
- Department of Chemistry, WestChem, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K
| | - Pavel Kočovský
- Department of Chemistry, WestChem, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K
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27
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Abstract
The reversible reaction of primary or secondary amines with enolizable aldehydes or ketones affords nucleophilic intermediates, enamines. With chiral amines, catalytic enantioselective reactions via enamine intermediates become possible. In this review, structure-activity relationships and the scope as well as current limitations of enamine catalysis are discussed.
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Kobayashi S, Mori Y, Fossey JS, Salter MM. Catalytic Enantioselective Formation of C−C Bonds by Addition to Imines and Hydrazones: A Ten-Year Update. Chem Rev 2011; 111:2626-704. [DOI: 10.1021/cr100204f] [Citation(s) in RCA: 761] [Impact Index Per Article: 58.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shu̅ Kobayashi
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuichiro Mori
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - John S. Fossey
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
| | - Matthew M. Salter
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Schulz K, Ratjen L, Martens J. Homo- and heterogeneous organocatalysis: enantioselective Mannich addition of ketones to endocyclic carbon–nitrogen double bonds. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.10.079] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Ikemoto T. Recent Developments of Organocatalysis and their Applications to Process Chemistry. J SYN ORG CHEM JPN 2011. [DOI: 10.5059/yukigoseikyokaishi.69.562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Ohara T, Adibekian A, Esposito D, Stallforth P, Seeberger PH. Towards the synthesis of a Yersinia pestis cell wall polysaccharide: enantioselective synthesis of an L-glycero-D-manno-heptose building block. Chem Commun (Camb) 2010; 46:4106-8. [PMID: 20454710 DOI: 10.1039/c000784f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A short and enantioselective de novo synthesis of an L-glycero-D-manno-heptose building block for the total synthesis of a Yersinia pestis cell wall polysaccharide is described.
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Affiliation(s)
- Takafumi Ohara
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14776 Potsdam, Germany
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32
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Abstract
Asymmetric aldol reactions are a powerful method for the construction of carbon-carbon bonds in an enantioselective fashion. Historically this reaction has been performed in a stoichiometric fashion to control the various aspects of chemo-, diastereo-, regio- and enantioselectivity, however, a more atom economical approach would unite high selectivity with the use of only a catalytic amount of a chiral promoter. This critical review documents the development of direct catalytic asymmetric aldol methodologies, including organocatalytic and metal-based strategies. New methods have improved the reactivity, selectivity and substrate scope of the direct aldol reaction and enabled the synthesis of complex molecular targets (357 references).
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, CA 94305-5080, USA.
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Itoh S, Kitamura M, Yamada Y, Aoki S. Chiral catalysts dually functionalized with amino acid and Zn2+ complex components for enantioselective direct aldol reactions inspired by natural aldolases: design, synthesis, complexation properties, catalytic activities, and mechanistic study. Chemistry 2009; 15:10570-84. [PMID: 19746465 DOI: 10.1002/chem.200900733] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Aldolases are enzymes that catalyze stereospecific aldol reactions in a reversible manner. Naturally occurring aldolases include class I aldolases, which catalyze aldol reactions via enamine intermediates, and class II aldolases, in which Zn(2+) enolates of substrates react with acceptor aldehydes. In this work, Zn(2+) complexes of L-prolyl-pendant[15]aneN(5) (ZnL(3)), L-prolyl-pendant[12]aneN(4) (ZnL(4)), and L-valyl-pendant[12]aneN(4) (ZnL(5)) were designed and synthesized for use as chiral catalysts for enantioselective aldol reactions. The complexation constants for L(3) to L(5) with Zn(2+) [logK(s)(ZnL)] were determined to be 14.1 (for ZnL(3)), 7.6 (for ZnL(4)), and 9.6 (for ZnL(5)), indicating that ZnL(3) is more stable than ZnL(4) and ZnL(5). The deprotonation constants of Zn(2+)-bound water [pK(a)(ZnL) values] for ZnL(3), ZnL(4), and ZnL(5) were calculated to be 9.2 (for ZnL(3)), 8.2 (for ZnL(4)), and 8.6 (for ZnL(5)), suggesting that the Zn(2+) ions in ZnL(3) is a less acidic Lewis acid than in ZnL(4) and ZnL(5). These values also indicated that the amino groups on the side chains weakly coordinate to Zn(2+). We carried out aldol reactions between acetone and 2-chlorobenzaldehyde and other aldehydes in the presence of catalytic amounts of the chiral Zn(2+) complexes in acetone/H(2)O at 25 and 37 degrees C. Whereas ZnL(3) yielded the aldol product in 43% yield and 1% ee (R), ZnL(4) and ZnL(5) afforded good chemical yields and high enantioselectivities of up to 89% ee (R). UV titrations of proline and ZnL(4) with acetylacetone (acac) in DMSO/H(2)O (1:2) indicate that ZnL(4) facilitates the formation of the ZnL(4)(acac)(-) complex (K(app)=2.1x10(2) M(-1)), whereas L-proline forms a Schiff base with acac with a very small equilibrium constant. These results suggest that the amino acid components and the Zn(2+) ions in ZnL(4) and ZnL(5) function in a cooperative manner to generate the Zn(2+)-enolate of acetone, thus permitting efficient enantioselective C-C bond formation with aldehydes.
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Affiliation(s)
- Susumu Itoh
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan
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34
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Pandey J, Anand N, Tripathi RP. l-Proline catalyzed multicomponent reaction of 3,4-dihydro-(2H)-pyran, urea/thiourea, and aldehydes: diastereoselective synthesis of hexahydropyrano pyrimidinones (thiones). Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.09.002] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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35
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Raj M, Parashari G, Singh V. Highly Enantioselective Organocatalyticsyn- andanti-Aldol Reactions in Aqueous Medium. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900122] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Odedra A, Seeberger PH. 5-(Pyrrolidin-2-yl)tetrazole-catalyzed aldol and mannich reactions: acceleration and lower catalyst loading in a continuous-flow reactor. Angew Chem Int Ed Engl 2009; 48:2699-702. [PMID: 19288478 DOI: 10.1002/anie.200804407] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Continuous organocatalysis: Fast aldol and Mannich reactions require less catalyst when conducted in a microreactor. A proline tetrazole derivative (5-10 mol %) catalyzes asymmetric aldol reactions between various aromatic aldehydes and ketones in microreactor at 60 degrees C with reaction times ranging from 10 to 30 min.
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Affiliation(s)
- Arjan Odedra
- Laboratory for Organic Chemistry, Swiss Federal Institute of Technology (ETH) Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
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Palyam N, Majewski M. Organocatalytic syn-Aldol Reactions of Dioxanones with (S)-Isoserinal Hydrate: Synthesis of l-Deoxymannojirimycin and l-Deoxyidonojirimycin. J Org Chem 2009; 74:4390-2. [DOI: 10.1021/jo900263s] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nagarjuna Palyam
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
| | - Marek Majewski
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
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38
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Odedra A, Seeberger P. 5-(Pyrrolidin-2-yl)tetrazol-katalysierte Aldol- und Mannich-Reaktionen: schnellere Reaktionen und niedrigere Katalysatorbeladung in einem Durchflussreaktor. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200804407] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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39
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Niewczas I, Majewski M. Building Higher Carbohydrates via Dioxanone Aldol Chemistry: The α,α′-Bisaldol Approach. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Enders D, Narine AA. Lessons from nature: biomimetic organocatalytic carbon-carbon bond formations. J Org Chem 2008; 73:7857-70. [PMID: 18778100 DOI: 10.1021/jo801374j] [Citation(s) in RCA: 162] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nature utilizes simple C2 and C3 building blocks, such as dihydroxyacetone phosphate (DHAP), phosphoenolpyruvate (PEP), and the "active aldehyde" in various enzyme-catalyzed carbon-carbon bond formations to efficiently build up complex organic molecules. In this Perspective, we describe the transition from using enantiopure chemical synthetic equivalents of these building blocks, employing our SAMP/RAMP hydrazone methodology and metalated chiral alpha-amino nitriles, to the asymmetric organocatalytic versions developed in our laboratory. Following this biomimetic strategy, the DHAP equivalent 2,2-dimethyl-1,3-dioxan-5-one (dioxanone) has been used in the proline-catalyzed synthesis of carbohydrates, aminosugars, carbasugars, polyoxamic acid, and various sphingosines. Proline-catalyzed aldol reactions involving a PEP-like equivalent have also allowed for the asymmetric synthesis of ulosonic acid precursors. By mimicking the "active aldehyde" nucleophilic acylations in Nature catalyzed by the thiamine-dependent enzyme, transketolase, enantioselective N-heterocyclic carbene-catalyzed benzoin and Stetter reactions have been developed. Finally, based on Nature's use of domino reactions to convert simple building blocks into complex and highly functionalized molecules, we report on our development of biomimetic asymmetric multicomponent domino reactions which couple enamine and iminium catalysis.
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Affiliation(s)
- Dieter Enders
- Institut für Organische Chemie, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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Abstract
After an initial period of validating asymmetric organocatalysis by using a wide range of important model reactions that constitute the essential tools of organic synthesis, the time has now been reached when organocatalysis can be used to address specific issues and solve pending problems of stereochemical relevance. This Review deals with selected studies reported in 2006 and the first half of 2007, and is intended to highlight four main aspects that may be taken as testimony of the present status and prospective of organocatalysis: a) chemical efficiency; b) discovery of new substrate combinations to give new asymmetric syntheses; c) development of new catalysts for specific purposes by using mechanistic findings; and d) applications of organocatalytic reactions in the asymmetric total synthesis of target natural products and known compounds of biological and pharmaceutical relevance.
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Affiliation(s)
- Alessandro Dondoni
- Dipartimento di Chimica, Università di Ferrara, Via L. Borsari 46-44100 Ferrara, Italy.
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43
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Synthesis of enantiomerically enriched secondary and tertiary phenylthio- and phenoxy-aldols. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.03.066] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Zhang H, Ramasastry S, Tanaka F, Barbas C. Organocatalyticanti-Mannich Reactions with Dihydroxyacetone and Acyclic Dihydroxyacetone Derivatives: A Facile Route to Amino Sugars. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800069] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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45
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Enders D, Barbion J. Asymmetric Synthesis of (+)-Altholactone: A Styryllactone Isolated from VariousGoniothalamus Species. Chemistry 2008; 14:2842-9. [DOI: 10.1002/chem.200701647] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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46
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Affiliation(s)
- Santanu Mukherjee
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim an der Ruhr, Germany
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Luo S, Xu H, Zhang L, Li J, Cheng JP. Highly enantioselective direct syn- and anti-aldol reactions of dihydroxyacetones catalyzed by chiral primary amine catalysts. Org Lett 2008; 10:653-6. [PMID: 18215050 DOI: 10.1021/ol703023t] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present herein simple primary-tertiary diamine-Brønsted acid conjugates that catalyze both syn- and anti-aldol reactions of dihydroxyacetones (DHAs) with high diastereoselectivities and enantioselectivities. This type of organocatalysts functionally mimics all four DHA aldolases, namely L-fuculose-1-phosphate aldolase, D-tagatose-1,6-diphosphate aldolase, D-fructose-1,6-diphosphate aldolase, and L-rhamnulose-1-phosphate aldolase.
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Affiliation(s)
- Sanzhong Luo
- Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Chemical Biology, Institute of Chemistry and Graduate School, Chinese Academy of Sciences, Beijing 100080, China.
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49
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Kotsuki H, Ikishima H, Okuyama A. Organocatalytic Asymmetric Synthesis Using Proline and Related Molecules. Part 1. HETEROCYCLES 2008. [DOI: 10.3987/rev-07-620] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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50
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Gruttadauria M, Giacalone F, Noto R. Supported proline and proline-derivatives as recyclable organocatalysts. Chem Soc Rev 2008; 37:1666-88. [DOI: 10.1039/b800704g] [Citation(s) in RCA: 375] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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