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Yu S, Yuan G, Liu J, Bian Q, Wang M, Zhong J. Asymmetric synthesis of the sex pheromone of the apple leafminer, Lyonetia prunifoliella. Chirality 2023; 35:118-128. [PMID: 36573613 DOI: 10.1002/chir.23524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/24/2022] [Accepted: 12/01/2022] [Indexed: 12/28/2022]
Abstract
Lyonetia prunifoliella is a significant pest in orchards and damages apple. The sex pheromones of this pest were prepared via a new and concise method. The central to our method were Evans' chiral auxiliaries, the addition of chiral Grignard reagent to aldehyde and Wittig coupling.
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Affiliation(s)
- Shihang Yu
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Gucheng Yuan
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Jiawei Liu
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Qinghua Bian
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Min Wang
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Jiangchun Zhong
- Department of Applied Chemistry, China Agricultural University, Beijing, China
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2
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He GG, Liu SF, Rao BQ, Bai HJ, Du ZT. A New Asymmetric Synthesis of ( S)-14-Methyl-1-Octadecene, the Sex Pheromone of the Peach Leafminer Moth. Nat Prod Commun 2021. [DOI: 10.1177/1934578x211020149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
An asymmetric synthesis of 14-methyl-1-octadecene, the sex pheromone of the peach leafminer moth, has been efficiently achieved. A key chiral intermediate, ( R)−4-(benzyloxy)−3-methylbutanal, which has been developed as the resource chemical, can be obtained in large quantities from the steroid industry. 1,11-Undecanediol is selectively masked, and then converted into a phosphonium salt derivative, thereby effectively constructing a carbon skeleton. The target molecule is synthesized in 8 linear steps, with a 42% yield. The key characteristic of our synthesis lies in its chiral-pool strategy.
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Affiliation(s)
- Guo-Guo He
- Engineering Laboratory of Chemical Resources Utilisation in South Xinjiang of Xinjiang Production and Construction Corps, Tarim University, Alar, China
| | - Si-Fan Liu
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, China
| | - Bao-Qi Rao
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, China
| | - Hong-Jin Bai
- Engineering Laboratory of Chemical Resources Utilisation in South Xinjiang of Xinjiang Production and Construction Corps, Tarim University, Alar, China
| | - Zhen-Ting Du
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, China
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Province, Nanchang, China
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3
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Chamorro‐Arenas D, Nolasco‐Hernández AA, Fuentes L, Quintero L, Sartillo‐Piscil F. Transition‐Metal‐Free Multiple Functionalization of Piperidines to 4‐Substituted and 3,4‐Disubstituted 2‐Piperidinones. Chemistry 2020; 26:4671-4676. [DOI: 10.1002/chem.201905262] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Delfino Chamorro‐Arenas
- Centro de Investigación de la Facultad de Ciencias QuímicasBenemérita Universidad Autónoma de Puebla (BUAP) 14 Sur Esq. San Claudio, Col. San Manuel 72570 Puebla México
| | - Alejandro A. Nolasco‐Hernández
- Centro de Investigación de la Facultad de Ciencias QuímicasBenemérita Universidad Autónoma de Puebla (BUAP) 14 Sur Esq. San Claudio, Col. San Manuel 72570 Puebla México
| | - Lilia Fuentes
- Centro de Investigación de la Facultad de Ciencias QuímicasBenemérita Universidad Autónoma de Puebla (BUAP) 14 Sur Esq. San Claudio, Col. San Manuel 72570 Puebla México
| | - Leticia Quintero
- Centro de Investigación de la Facultad de Ciencias QuímicasBenemérita Universidad Autónoma de Puebla (BUAP) 14 Sur Esq. San Claudio, Col. San Manuel 72570 Puebla México
| | - Fernando Sartillo‐Piscil
- Centro de Investigación de la Facultad de Ciencias QuímicasBenemérita Universidad Autónoma de Puebla (BUAP) 14 Sur Esq. San Claudio, Col. San Manuel 72570 Puebla México
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4
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Cheang DMJ, Armstrong RJ, Akhtar WM, Donohoe TJ. Enantioconvergent alkylation of ketones with racemic secondary alcohols via hydrogen borrowing catalysis. Chem Commun (Camb) 2020; 56:3543-3546. [DOI: 10.1039/d0cc00767f] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
An enantioconvergent hydrogen borrowing strategy enables the catalytic asymmetric alkylation of ketone enolates with unactivated, racemic secondary alcohols.
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5
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Yang S, Che W, Wu HL, Zhu SF, Zhou QL. Neutral iridium catalysts with chiral phosphine-carboxy ligands for asymmetric hydrogenation of unsaturated carboxylic acids. Chem Sci 2017; 8:1977-1980. [PMID: 28451313 PMCID: PMC5384563 DOI: 10.1039/c6sc03764j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 11/14/2016] [Indexed: 01/14/2023] Open
Abstract
We developed neutral iridium catalysts with chiral spiro phosphine-carboxy ligands (SpiroCAP) for asymmetric hydrogenation of unsaturated carboxylic acids. Different from the cationic Crabtree-type catalysts, the iridium catalysts with chiral spiro phosphine-carboxy ligands are neutral and do not require the use of a tetrakis[3,5-bis(trifluoromethyl)phenyl]borate (BArF-) counterion, which is necessary for stabilizing cationic Crabtree-type catalysts. Another advantage of the neutral iridium catalysts is that they have high stability and have a long lifetime in air. The new iridium catalysts with chiral spiro phosphine-carboxy ligands exhibit unprecedented high enantioselectivity (up to 99.4% ee) in the asymmetric hydrogenations of various unsaturated carboxylic acids, particularly for 3-alkyl-3-methylenepropionic acids, which are challenging substrates for other chiral catalysts.
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Affiliation(s)
- Shuang Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China . ;
| | - Wen Che
- State Key Laboratory and Institute of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China . ;
| | - Hui-Ling Wu
- State Key Laboratory and Institute of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China . ;
| | - Shou-Fei Zhu
- State Key Laboratory and Institute of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China . ;
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China . ; .,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071 , China
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7
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Byrd KM. Diastereoselective and enantioselective conjugate addition reactions utilizing α,β-unsaturated amides and lactams. Beilstein J Org Chem 2015; 11:530-62. [PMID: 25977728 PMCID: PMC4419509 DOI: 10.3762/bjoc.11.60] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 04/01/2015] [Indexed: 12/19/2022] Open
Abstract
The conjugate addition reaction has been a useful tool in the formation of carbon-carbon bonds. The utility of this reaction has been demonstrated in the synthesis of many natural products, materials, and pharmacological agents. In the last three decades, there has been a significant increase in the development of asymmetric variants of this reaction. Unfortunately, conjugate addition reactions using α,β-unsaturated amides and lactams remain underdeveloped due to their inherently low reactivity. This review highlights the work that has been done on both diastereoselective and enantioselective conjugate addition reactions utilizing α,β-unsaturated amides and lactams.
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Affiliation(s)
- Katherine M Byrd
- Department of Medicinal Chemistry, University of Kansas, 1251 Wescoe Hall Drive Lawrence, Kansas 66045-7582, USA
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8
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Schoonen AK, Fernández-Ibáñez MÁ, Fañanás-Mastral M, Teichert JF, Feringa BL. Chiral amides via copper-catalysed enantioselective conjugate addition. Org Biomol Chem 2014; 12:36-41. [PMID: 24196172 DOI: 10.1039/c3ob41923a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Anne K Schoonen
- Department of Organic Chemistry and Molecular Inorganic Chemistry, Stratingh Institute, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands.
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9
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Alonso B, Ocejo M, Carrillo L, Vicario JL, Reyes E, Uria U. Using heteroaryl-lithium reagents as hydroxycarbonyl anion equivalents in conjugate addition reactions with (S,S)-(+)-pseudoephedrine as chiral auxiliary; enantioselective synthesis of 3-substituted pyrrolidines. J Org Chem 2013; 78:614-27. [PMID: 23260037 DOI: 10.1021/jo302438k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have developed an efficient protocol for carrying out the stereocontrolled formal conjugate addition of hydroxycarbonyl anion equivalents to α,β-unsaturated carboxylic acid derivatives using (S,S)-(+)-pseudoephedrine as chiral auxiliary, making use of the synthetic equivalence between the heteroaryl moieties and the carboxylate group. This protocol has been applied as key step in the enantioselective synthesis of 3-substituted pyrrolidines in which, after removing the chiral auxiliary, the heteroaryl moiety is converted into a carboxylate group followed by reduction and double nucleophilic displacement. Alternatively, the access to the same type of heterocyclic scaffold but with opposite absolute configuration has also been accomplished by making use of the regio- and diastereoselective conjugate addition of organolithium reagents to α,β,γ,δ-unsaturated amides derived from the same chiral auxiliary followed by chiral auxiliary removal, ozonolysis, and reductive amination/intramolecular nucleophilic displacement sequence.
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Affiliation(s)
- Beatriz Alonso
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, P.O. Box 644, E-48080 Bilbao, Spain
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10
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Drusan M, Galeštoková Z, Šebesta R. Diastereoselective copper-catalysed 1,4-addition of Grignard reagents to N-enoyl oxazolidinones. RSC Adv 2013. [DOI: 10.1039/c3ra42024h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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11
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Iza A, Uria U, Reyes E, Carrillo L, Vicario JL. A general approach for the asymmetric synthesis of densely substituted piperidines and fully substituted piperidinones employing the asymmetric Mannich reaction as key step. RSC Adv 2013. [DOI: 10.1039/c3ra45110k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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13
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Morales MR, Mellem KT, Myers AG. Pseudoephenamine: a practical chiral auxiliary for asymmetric synthesis. Angew Chem Int Ed Engl 2012; 51:4568-71. [PMID: 22461381 DOI: 10.1002/anie.201200370] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Indexed: 11/05/2022]
Affiliation(s)
- Marvin R Morales
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
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14
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Morales MR, Mellem KT, Myers AG. Pseudoephenamine: A Practical Chiral Auxiliary for Asymmetric Synthesis. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200370] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Hoffman TJ, Carreira EM. Catalytic Asymmetric Intramolecular Hydroacylation with Rhodium/Phosphoramidite-Alkene Ligand Complexes. Angew Chem Int Ed Engl 2011; 50:10670-4. [PMID: 21928464 DOI: 10.1002/anie.201104595] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Indexed: 11/07/2022]
Affiliation(s)
- Thomas J Hoffman
- Laboratorium für Organische Chemie, ETH Zürich, 8093 Zürich, Switzerland
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16
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Hoffman TJ, Carreira EM. Catalytic Asymmetric Intramolecular Hydroacylation with Rhodium/Phosphoramidite-Alkene Ligand Complexes. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201104595] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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17
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Yang W, Wei X, Pan Y, Lee R, Zhu B, Liu H, Yan L, Huang KW, Jiang Z, Tan CH. Highly Enantio- and Diastereoselective Synthesis of β-Methyl-γ-monofluoromethyl-Substituted Alcohols. Chemistry 2011; 17:8066-70. [DOI: 10.1002/chem.201100929] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2011] [Indexed: 11/07/2022]
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18
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Ocejo M, Carrillo L, Vicario JL, Badía D, Reyes E. Role of pseudoephedrine as chiral auxiliary in the "acetate-type" aldol reaction with chiral aldehydes; asymmetric synthesis of highly functionalized chiral building blocks. J Org Chem 2011; 76:460-70. [PMID: 21188970 DOI: 10.1021/jo101878j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
We have studied in depth the aldol reaction between acetamide enolates and chiral α-heterosubstituted aldehydes using pseudoephedrine as chiral auxiliary under double stereodifferentiation conditions, showing that high diastereoselectivities can only be achieved under the matched combination of reagents and provided that the α-heteroatom-containing substituent of the chiral aldehyde is conveniently protected. Moreover, the obtained highly functionalized aldols have been employed as very useful starting materials for the stereocontrolled preparation of other interesting compounds and chiral building blocks such as pyrrolidines, indolizidines, and densely functionalized β-hydroxy and β-amino ketones using simple and high-yielding methodologies.
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Affiliation(s)
- Marta Ocejo
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, E-48080 Bilbao, Spain
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19
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Kehrli S, Martin D, Rix D, Mauduit M, Alexakis A. Formation of Quaternary Chiral Centers by N-Heterocyclic Carbene-Cu-Catalyzed Asymmetric Conjugate Addition Reactions with Grignard Reagents on Trisubstituted Cyclic Enones. Chemistry 2010; 16:9890-904. [DOI: 10.1002/chem.201000471] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Zhang S, Li J, Zhao S, Wang W. 1,3-Benzodithiole-1,1,3,3-tetraoxide (BDT) as a versatile methylation reagent in catalytic enantioselective Michael addition reaction with enals. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.01.102] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Sada M, Matsubara S. A Tandem Reaction Initiated by 1,4-Addition of Bis(iodozincio)methane for 1,3-Diketone Formation. J Am Chem Soc 2009; 132:432-3. [DOI: 10.1021/ja910428y] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mutsumi Sada
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoutodaigaku-katsura, Nishikyo, Kyoto 615-8510, Japan
| | - Seijiro Matsubara
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoutodaigaku-katsura, Nishikyo, Kyoto 615-8510, Japan
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22
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Fronza G, Fuganti C, Serra S. Stereochemical Course of Baker's Yeast Mediated Reduction of the Tri- and Tetrasubstituted Double Bonds of Substituted Cinnamaldehydes. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900827] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Landa A, Puente Á, Santos JI, Vera S, Oiarbide M, Palomo C. Catalytic Conjugate Additions of Geminal Bis(sulfone)s: Expanding the Chemistry of Sulfones as Simple Alkyl Anion Equivalents. Chemistry 2009; 15:11954-62. [DOI: 10.1002/chem.200902094] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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24
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Ocejo M, Carrillo L, Badía D, Vicario JL, Fernández N, Reyes E. Highly Regio- and Stereoselective Addition of Organolithium Reagents to Extended Conjugate Amides Using (S,S)-(+)-Pseudoephedrine as Chiral Auxiliary. J Org Chem 2009; 74:4404-7. [DOI: 10.1021/jo900397w] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marta Ocejo
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
| | - Luisa Carrillo
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
| | - Dolores Badía
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
| | - Jose L. Vicario
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
| | - Naiara Fernández
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
| | - Efraim Reyes
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
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25
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Li BF, Hughes RM, Le J, McGee K, Gallagher DJ, Gross RS, Provencal D, Reddy JP, Wang P, Zegelman L, Zhao Y, Zook SE. Efficient Synthesis of (2S,3S)-2-Ethyl-3-methylvaleramide Using (1S,2S)-Pseudoephedrine as a Chiral Auxiliary. Org Process Res Dev 2009. [DOI: 10.1021/op800260j] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bin-Feng Li
- Neurocrine Biosciences, Inc., 12780 El Camino Real, San Diego, California 92130, U.S.A
| | - Robert M. Hughes
- Neurocrine Biosciences, Inc., 12780 El Camino Real, San Diego, California 92130, U.S.A
| | - Jackie Le
- Neurocrine Biosciences, Inc., 12780 El Camino Real, San Diego, California 92130, U.S.A
| | - Kevin McGee
- Neurocrine Biosciences, Inc., 12780 El Camino Real, San Diego, California 92130, U.S.A
| | - Donald J. Gallagher
- Neurocrine Biosciences, Inc., 12780 El Camino Real, San Diego, California 92130, U.S.A
| | - Raymond S. Gross
- Neurocrine Biosciences, Inc., 12780 El Camino Real, San Diego, California 92130, U.S.A
| | - David Provencal
- Neurocrine Biosciences, Inc., 12780 El Camino Real, San Diego, California 92130, U.S.A
| | - Jayachandra P. Reddy
- Neurocrine Biosciences, Inc., 12780 El Camino Real, San Diego, California 92130, U.S.A
| | - Peng Wang
- Neurocrine Biosciences, Inc., 12780 El Camino Real, San Diego, California 92130, U.S.A
| | - Lev Zegelman
- Neurocrine Biosciences, Inc., 12780 El Camino Real, San Diego, California 92130, U.S.A
| | - Yuxin Zhao
- Neurocrine Biosciences, Inc., 12780 El Camino Real, San Diego, California 92130, U.S.A
| | - Scott E. Zook
- Neurocrine Biosciences, Inc., 12780 El Camino Real, San Diego, California 92130, U.S.A
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Wu Y, Zhao J, Chen J, Pan C, Li L, Zhang H. Enantioselective Sequential Conjugate Addition−Allylation Reactions: A Concise Total Synthesis of (+)-Podophyllotoxin. Org Lett 2008; 11:597-600. [DOI: 10.1021/ol8026208] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yingming Wu
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P. R. China
| | - Jingfeng Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P. R. China
| | - Jingbo Chen
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P. R. China
| | - Chengxue Pan
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P. R. China
| | - Liang Li
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P. R. China
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P. R. China
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Cao X, Li F, Hu M, Lu W, Yu GA, Liu SH. Chiral gamma-aryl-1H-1,2,4-triazole derivatives as highly potential antifungal agents: Design, synthesis, structure, and in vitro fungicidal activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:11367-11375. [PMID: 18998696 DOI: 10.1021/jf8026843] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A novel series of chiral gamma-aryl-1H-1,2,4-triazole derivatives as highly potential antifungal agents have been designed and synthesized conveniently by using the chiral auxiliary as a controlling reagent. All of the compounds exhibit moderate to high ee values reaching up to 99%, and the preliminary bioassay results demonstrated that most of the target compounds take on a significantly wide spectrum activity against Fusarium oxysporium, Rhizoctonia solani, Botrytis cinereapers, Gibberella zeae, Dothiorella gregaria, and Colletotrichum gossypii species.
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Affiliation(s)
- Xiufang Cao
- Central China Normal University, Wuhan, People's Republic of China
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28
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Kummer DA, Chain WJ, Morales MR, Quiroga O, Myers AG. Stereocontrolled alkylative construction of quaternary carbon centers. J Am Chem Soc 2008; 130:13231-3. [PMID: 18788739 DOI: 10.1021/ja806021y] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Protocols for the stereodefined formation of alpha,alpha-disubstituted enolates of pseudoephedrine amides are presented followed by the implementation of these in diastereoselective alkylation reactions. Direct alkylation of alpha,alpha-disubstituted pseudoephedrine amide substrates is demonstrated to be both efficient and diastereoselective across a range of substrates, as exemplified by alkylation of the diastereomeric pseudoephedrine alpha-methylbutyramides, where both substrates are found to undergo stereospecific replacement of the alpha-C-H bond with alpha-C-alkyl, with retention of stereochemistry. This is shown to arise by sequential stereospecific enolization and alkylation reactions, with the alkyl halide attacking a common pi-face of the E- and Z-enolates, proposed to be opposite the pseudoephedrine alkoxide side chain. Pseudoephedrine alpha-phenylbutyramides are found to undergo highly stereoselective but not stereospecific alpha-alkylation reactions, which evidence suggests is due to facile enolate isomerization. Also, we show that alpha,alpha-disubstituted pseudoephedrine amide enolates can be generated in a highly stereocontrolled fashion by conjugate addition of an alkyllithium reagent to the s-cis-conformer of an alpha-alkyl-alpha,beta-unsaturated pseudoephedrine amide, providing alpha,alpha-disubstituted enolate substrates that undergo alkylation in the same sense as those formed by direct deprotonation. Methods are presented to transform the alpha-quaternary pseudoephedrine amide products into optically active carboxylic acids, ketones, primary alcohols, and aldehydes.
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Affiliation(s)
- David A Kummer
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
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Okada S, Arayama K, Murayama R, Ishizuka T, Hara K, Hirone N, Hata T, Urabe H. Iron-Catalyst-Switched Selective Conjugate Addition of Grignard Reagents: α,β,γ,δ-Unsaturated Amides as Versatile Templates for Asymmetric Three-Component Coupling Processes. Angew Chem Int Ed Engl 2008; 47:6860-4. [DOI: 10.1002/anie.200801928] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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van Zijl AW, Szymanski W, López F, Minnaard AJ, Feringa BL. Catalytic Enantioselective Synthesis of Vicinal Dialkyl Arrays. J Org Chem 2008; 73:6994-7002. [DOI: 10.1021/jo8010649] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anthoni W. van Zijl
- Stratingh Institute for Chemistry, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Wiktor Szymanski
- Stratingh Institute for Chemistry, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Ferrnando López
- Stratingh Institute for Chemistry, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Adriaan J. Minnaard
- Stratingh Institute for Chemistry, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Ben L. Feringa
- Stratingh Institute for Chemistry, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
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Okada S, Arayama K, Murayama R, Ishizuka T, Hara K, Hirone N, Hata T, Urabe H. Iron-Catalyst-Switched Selective Conjugate Addition of Grignard Reagents: α,β,γ,δ-Unsaturated Amides as Versatile Templates for Asymmetric Three-Component Coupling Processes. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200801928] [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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Biswas K, Woodward S. Stereoselective 1,4-addition of Grignard reagents to α,β-enamides using a combined chiral auxiliary-catalyst approach. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.06.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Regio- and diastereoselective conjugate addition of Grignard reagents to aryl substituted α,β-unsaturated carbonyl compounds derived from Oppolzer's sultam. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.04.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Ruiz N, Vicario JL, Badía D, Carrillo L, Alonso B. (S,S)-(+)-Pseudoephedrine α-Iminoglyoxylamide as a Chiral Glycine Cation Equivalent: A Modular and Flexible Approach to Enantioenriched α-Amino Ketones. Org Lett 2008; 10:2613-6. [DOI: 10.1021/ol800934r] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nerea Ruiz
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
| | - Jose L. Vicario
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
| | - Dolores Badía
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
| | - Luisa Carrillo
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
| | - Beatriz Alonso
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
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McGhee AM, Kizirian JC, Procter DJ. Synthesis and evaluation of a new polymer-supported pseudoephedrine auxiliary for asymmetric alkylations on solid phase. Org Biomol Chem 2007; 5:1021-4. [PMID: 17377653 DOI: 10.1039/b700477j] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A polymer-supported pseudoephedrine auxiliary linked to the support through nitrogen, has been developed for use in asymmetric alkylations on solid phase.
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Affiliation(s)
- Andrea M McGhee
- School of Chemistry, Oxford Road, The University of Manchester, Manchester, UK
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