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Banerjee S, Vanka K. The Role of Aromatic Alcohol Additives on Asymmetric Organocatalysis Reactions: Insights from Theory. Chem Asian J 2024; 19:e202300997. [PMID: 38270228 DOI: 10.1002/asia.202300997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 01/19/2024] [Accepted: 01/22/2024] [Indexed: 01/26/2024]
Abstract
The presence of an aromatic additive has been seen to enhance, often significantly, the enantioselectivity and yield in asymmetric organocatalysis. Considering their success across a dizzying range of organocatalysts and organic transformations, it would seem unlikely that a common principle exists for their functioning. However, the current investigations with DFT suggest a general principle: the phenolic additive sandwiches itself, through hydrogen bonding and π⋅⋅⋅π stacking, between the organocatalyst coordinated electrophile and nucleophile. This is seen for a wide range of experimentally reported systems. That such complex formation leads to enhanced stereoselectivity is then demonstrated for two cases: the cinchona alkaloid complex (BzCPD), catalysing thiocyanation (2-naphthol additive employed), as well as for L-pipecolicacid catalysing the asymmetric nitroaldol reaction with a range of nitro-substituted phenol additives. These findings, indicating that dual catalysis takes place when phenolic additives are employed, are likely to have a significant impact on the field of asymmetric organocatalysis.
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Affiliation(s)
- Subhrashis Banerjee
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr.Homi Bhabha Road, Pune, 411008, Maharashtra, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Kumar Vanka
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr.Homi Bhabha Road, Pune, 411008, Maharashtra, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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2
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3
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Liu B, Yan R, Du W, Chen Y. Solvent‐Regulated
Diastereodivergent [3+2] Annulations of
CF
3
‐Containing
Morita−Baylis−Hillman Carbonates with Cyclic Sulfonimines. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bao‐Xin Liu
- Key Laboratory of Drug‐Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China
| | - Ru‐Jie Yan
- Key Laboratory of Drug‐Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China
| | - Wei Du
- Key Laboratory of Drug‐Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China
| | - Ying‐Chun Chen
- Key Laboratory of Drug‐Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China
- College of Pharmacy, Third Military Medical University Shapingba Chongqing 400038 China
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4
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Annibaletto J, Martzel T, Levacher V, Oudeyer S, Brière J. Multicomponent Catalytic Enantioselective Synthesis of Isoxazolidin‐5‐Ones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Thomas Martzel
- Normandie Univ UNIROUEN, INSA Rouen, CNRS, COBRA 76000 Rouen France
| | - Vincent Levacher
- Normandie Univ UNIROUEN, INSA Rouen, CNRS, COBRA 76000 Rouen France
| | - Sylvain Oudeyer
- Normandie Univ UNIROUEN, INSA Rouen, CNRS, COBRA 76000 Rouen France
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5
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Maftei CV, Franz MH, Kleeberg C, Neda I. New Members of the Cinchona Alkaloids Family: Assembly of the Triazole Heterocycle at the 6' Position. Molecules 2021; 26:molecules26113357. [PMID: 34199504 PMCID: PMC8199664 DOI: 10.3390/molecules26113357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 12/04/2022] Open
Abstract
The substance class of the well-known Cinchona alkaloids is widened by 6′-Amino-cinchonine and 6′-Amino-cinchonidine, novel compounds which incorporate a primary amino function in the quinolinic ring system. These key intermediates open the field for a range of fruitful chemistry. Here is described a short and direct pathway for the synthesis of triazole containing derivatives of the above-mentioned substances using the [3 + 2] Huisgen cycloaddition. For this purpose, the amines were first converted into the corresponding azides. Based on this, non-substituted and silyl-protected triazoles were synthesized as examples. Furthermore, didehydrated derivatives of quincorine and quincoridine were used as addition partners, resulting in compounds that carry the quinuclidine ring of the cinchona alkaloids at both ends. Some of these compounds were examined radiographically to investigate the position of the quinuclidine ring to the triazole. The solid-state structures of compounds 10, 11 and 28 were determined by X-ray diffraction analyses.
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Affiliation(s)
| | - Martin Heiko Franz
- InnoChemTech GmbH, Hagenring 30, 38106 Braunschweig, Germany; (C.V.M.); (M.H.F.)
| | - Christian Kleeberg
- Institut für Anorganische und Analytische Chemie, Technische Universität ‘Carola-Wilhelmina’ Braunschweig, Hagenring 30, 38106 Braunschweig, Germany;
| | - Ion Neda
- Institut für Anorganische und Analytische Chemie, Technische Universität ‘Carola-Wilhelmina’ Braunschweig, Hagenring 30, 38106 Braunschweig, Germany;
- Correspondence:
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6
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Sarkar R, Mukherjee S. Iridium-catalyzed enantioselective olefinic C(sp 2)-H allylic alkylation. Chem Sci 2021; 12:3070-3075. [PMID: 34164076 PMCID: PMC8179414 DOI: 10.1039/d0sc06208a] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 02/11/2021] [Accepted: 01/14/2021] [Indexed: 12/14/2022] Open
Abstract
The first iridium-catalyzed enantioselective olefinic C(sp2)-H allylic alkylation is developed in cooperation with Lewis base catalysis. This reaction, catalyzed by cinchonidine and an in situ generated cyclometalated Ir(i)/phosphoramidite complex, makes use of the latent enolate character of an α,β-unsaturated carbonyl compound, namely coumalate ester, to introduce an allyl group at its α-position in a branched-selective manner in moderate to good yield with good to excellent enantioselectivities (up to 98 : 2 er).
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Affiliation(s)
- Rahul Sarkar
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560 012 India +91-80-2360-0529 +91-80-2293-2850
| | - Santanu Mukherjee
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560 012 India +91-80-2360-0529 +91-80-2293-2850
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7
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Sonsona IG, Alegre-Requena JV, Marqués-López E, Gimeno MC, Herrera RP. Asymmetric Organocatalyzed Aza-Henry Reaction of Hydrazones: Experimental and Computational Studies. Chemistry 2020; 26:5469-5478. [PMID: 32012361 DOI: 10.1002/chem.202000232] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Indexed: 12/13/2022]
Abstract
The first asymmetric catalyzed aza-Henry reaction of hydrazones is presented. In this process, quinine was used as the catalyst to synthesize different alkyl substituted β-nitrohydrazides with ee up to 77 %. This ee was improved up to 94 % by a further recrystallization and the opposite enantiomer can be obtained by using quinidine as the catalyst, opening exciting possibilities in fields in which the control of chirality is vital, such as the pharmaceutical industry. Additionally, experimental and ab initio studies were performed to understand the reaction mechanism. The experimental results revealed an unexpected secondary kinetic isotope effect (KIE) that is explained by the calculated reaction pathway, which shows that the protonation of the initial hydrazone and the C-C bond forming reaction occur during a concerted process. This concerted mechanism makes the catalysis conceptually different to traditional base-promoted Henry and aza-Henry reactions.
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Affiliation(s)
- Isaac G Sonsona
- Laboratorio de Organocatálisis Asimétrica, Departamento de, Química Orgánica, Instituto de Síntesis Química y, Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, No. 12., 50009, Zaragoza, Spain
| | - Juan V Alegre-Requena
- Laboratorio de Organocatálisis Asimétrica, Departamento de, Química Orgánica, Instituto de Síntesis Química y, Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, No. 12., 50009, Zaragoza, Spain
| | - Eugenia Marqués-López
- Laboratorio de Organocatálisis Asimétrica, Departamento de, Química Orgánica, Instituto de Síntesis Química y, Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, No. 12., 50009, Zaragoza, Spain
| | - M Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de, Zaragoza, C/ Pedro Cerbuna, No. 12., 50009, Zaragoza, Spain
| | - Raquel P Herrera
- Laboratorio de Organocatálisis Asimétrica, Departamento de, Química Orgánica, Instituto de Síntesis Química y, Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, No. 12., 50009, Zaragoza, Spain
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8
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Rani D, Bhargava M, Agarwal J. Asymmetric Michael Addition of Unactivated Ketones with β‐Nitrostyrenes Mediated by Bifunctional L‐Prolinamide Organocatalysts. ChemistrySelect 2020. [DOI: 10.1002/slct.202000136] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Dixita Rani
- Department of Chemistry and Center of Advanced Studies Panjab University Chandigarh 160014 India
| | - Meha Bhargava
- Department of Chemistry and Center of Advanced Studies Panjab University Chandigarh 160014 India
| | - Jyoti Agarwal
- Department of Chemistry and Center of Advanced Studies Panjab University Chandigarh 160014 India
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9
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β-Isocupreidinate‒CaAl-layered double hydroxide composites—heterogenized catalysts for asymmetric Michael addition. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2019.110675] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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10
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Sun BB, Chen JB, Zhang JQ, Yang XP, Lv HP, Wang Z, Wang XW. Organo-catalyzed asymmetric cascade annulation reaction for the construction of bi-spirocyclic pyrazolone and oxindole derivatives. Org Chem Front 2020. [DOI: 10.1039/d0qo00001a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Organo-catalyzed tandem reaction between β,γ-unsaturated α-ketoesters and α-arylidene pyrazolinones was developed, and it provided chiral bi-spirocyclic pyrazolone and oxindole derivatives in high yields with good to excellent stereoselectivity.
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Affiliation(s)
- Bing-Bing Sun
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science Soochow University
- Suzhou 215123
- China
| | - Jun-Bo Chen
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science Soochow University
- Suzhou 215123
- China
| | - Jun-Qi Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science Soochow University
- Suzhou 215123
- China
| | - Xiao-Peng Yang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science Soochow University
- Suzhou 215123
- China
| | - Hao-Peng Lv
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science Soochow University
- Suzhou 215123
- China
| | - Zheng Wang
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Xing-Wang Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science Soochow University
- Suzhou 215123
- China
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11
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Velardo A, Capaccio V, Caruso T, Di Mola A, Massa A, Tedesco C, Caporaso L, Falivene L, Palombi L. Desymmetrization of 2-Cyano- N
-tosylbenzylidenimine with Thiols and Organocatalytic Heterocyclization by Dynamic Resolution: Mechanism Investigation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Amalia Velardo
- Dipartimento di Chimica e Biologia; Università degli Studi di Salerno; Via Giovanni Paolo II, 132 84084 Fiscyano (SA) Italy
| | - Vito Capaccio
- Dipartimento di Chimica e Biologia; Università degli Studi di Salerno; Via Giovanni Paolo II, 132 84084 Fiscyano (SA) Italy
| | - Tonino Caruso
- Dipartimento di Chimica e Biologia; Università degli Studi di Salerno; Via Giovanni Paolo II, 132 84084 Fiscyano (SA) Italy
| | - Antonia Di Mola
- Dipartimento di Chimica e Biologia; Università degli Studi di Salerno; Via Giovanni Paolo II, 132 84084 Fiscyano (SA) Italy
| | - Antonio Massa
- Dipartimento di Chimica e Biologia; Università degli Studi di Salerno; Via Giovanni Paolo II, 132 84084 Fiscyano (SA) Italy
| | - Consiglia Tedesco
- Dipartimento di Chimica e Biologia; Università degli Studi di Salerno; Via Giovanni Paolo II, 132 84084 Fiscyano (SA) Italy
| | - Lucia Caporaso
- Dipartimento di Chimica e Biologia; Università degli Studi di Salerno; Via Giovanni Paolo II, 132 84084 Fiscyano (SA) Italy
| | - Laura Falivene
- Chemical and Life Sciences and Engineering; Kaust Catalysis Center; King Abdullah University of Science and Technology; 23955-6900 Thuwal Saudi Arabia
| | - Laura Palombi
- Dipartimento di Chimica e Biologia; Università degli Studi di Salerno; Via Giovanni Paolo II, 132 84084 Fiscyano (SA) Italy
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12
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Jiang B, Xiao BX, Ouyang Q, Liang HP, Du W, Chen YC. Sequential Assembly of Morita–Baylis–Hillman Carbonates and Activated ortho-Vinylbenzaldehydes To Construct Chiral Methanobenzo[7]annulenone Frameworks. Org Lett 2019; 21:3310-3313. [PMID: 30998376 DOI: 10.1021/acs.orglett.9b01058] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Bo Jiang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ben-Xian Xiao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Qin Ouyang
- State Key Laboratory of Trauma, Burn and Combined Injury, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
| | - Hua-Ping Liang
- State Key Laboratory of Trauma, Burn and Combined Injury, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
- State Key Laboratory of Trauma, Burn and Combined Injury, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
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13
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Boratyński PJ, Zielińska-Błajet M, Skarżewski J. Cinchona Alkaloids-Derivatives and Applications. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2019; 82:29-145. [PMID: 30850032 DOI: 10.1016/bs.alkal.2018.11.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Major Cinchona alkaloids quinine, quinidine, cinchonine, and cinchonidine are available chiral natural compounds (chiral pool). Unlike many other natural products, these alkaloids are available in multiple diastereomeric forms which are separated on an industrial scale. The introduction discusses in short conformational equilibria, traditional separation scheme, biosynthesis, and de novo chemical syntheses. The second section concerns useful chemical applications of the alkaloids as chiral recognition agents and effective chiral catalysts. Besides the Sharpless ethers and quaternary ammonium salts (chiral PTC), the most successful bifunctional organocatalysts are based on 9-amino derivatives: thioureas and squaramides. The third section reports the main transformations of Cinchona alkaloids. This covers reactions of the 9-hydroxyl group with the retention or inversion of configuration. Specific Cinchona rearrangements enlarging [2.2.2]bicycle of quinuclidine to [3.2.2] products are connected to the 9-OH substitution. The syntheses of numerous esterification and etherification products are described, including many examples of bi-Cinchona alkaloid ethers. Further derivatives comprise 9-N-substituted compounds. The amino group is introduced via an azido function with the inversion of configuration at the stereogenic center C9. The 9-epi-amino-alkaloids provide imines, amides, imides, thioureas, and squaramides. The syntheses of 9-carbon-, 9-sulfur-, and 9-selenium-substituted derivatives are discussed. Oxidation of the hydroxyl group of any alkaloid gives ketones, which can be selectively reduced, reacted with Grignard reagents, or subjected to the Corey-Chaykovsky reaction. The alkaloids were also partially degraded by splitting C4'-C9 or N1-C8 bonds. In order to immobilize Cinchona alkaloids the transformations of the 3-vinyl group were often exploited. Finally, miscellaneous functionalizations of quinuclidine, quinoline, and examples of various metal complexes of the alkaloids are considered.
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Affiliation(s)
| | | | - Jacek Skarżewski
- Department of Organic Chemistry, Wrocław University of Technology, Wrocław, Poland.
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14
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Chen ZC, Chen P, Chen Z, Ouyang Q, Liang HP, Du W, Chen YC. Organocatalytic Enantioselective 1,3-Difunctionalizations of Morita–Baylis–Hillman Carbonates. Org Lett 2018; 20:6279-6283. [PMID: 30256122 DOI: 10.1021/acs.orglett.8b02764] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhi-Chao Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Peng Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Zhi Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Qin Ouyang
- State Key Laboratory of Trauma, Burn and Combined Injury, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
| | - Hua-Ping Liang
- State Key Laboratory of Trauma, Burn and Combined Injury, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
| | - Wei Du
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ying-Chun Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
- State Key Laboratory of Trauma, Burn and Combined Injury, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
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15
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Chennapuram M, Subba Reddy UV, Seki C, Okuyama Y, Kwon E, Uwai K, Tokiwa M, Takeshita M, Nakano H. Hybrid-Type Squaramide-Fused Amino Alcohol Organocatalysts for Enantioselective Nitro-Aldol Reaction of Nitromethane with Isatins. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700138] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Madhu Chennapuram
- Division of Sustainable and Environmental Engineering; Graduate School of Engineering; Muroran Institute of Technology; 27-1 Mizumoto 050-8585 Muroran Japan
| | - U. V. Subba Reddy
- Division of Sustainable and Environmental Engineering; Graduate School of Engineering; Muroran Institute of Technology; 27-1 Mizumoto 050-8585 Muroran Japan
| | - Chigusa Seki
- Division of Sustainable and Environmental Engineering; Graduate School of Engineering; Muroran Institute of Technology; 27-1 Mizumoto 050-8585 Muroran Japan
| | - Yuko Okuyama
- Tohoku Medical and Pharmaceutical University; 4-4-1 Komatsushima, Aoba-ku 981-8558 Sendai Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules; Graduate School of Sciences; Tohoku University; 6-3 Aoba, Aramaki, Aoba-ku 980-8578 Sendai Japan
| | - Koji Uwai
- Division of Sustainable and Environmental Engineering; Graduate School of Engineering; Muroran Institute of Technology; 27-1 Mizumoto 050-8585 Muroran Japan
| | - Michio Tokiwa
- Tokiwakai Group; 62 Numajiri, Tsuduri-chou Uchigo 973-8053 Iwaki Japan
| | | | - Hiroto Nakano
- Division of Sustainable and Environmental Engineering; Graduate School of Engineering; Muroran Institute of Technology; 27-1 Mizumoto 050-8585 Muroran Japan
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16
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Laraia L, Ohsawa K, Konstantinidis G, Robke L, Wu YW, Kumar K, Waldmann H. Discovery of Novel Cinchona-Alkaloid-Inspired Oxazatwistane Autophagy Inhibitors. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611670] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Luca Laraia
- Max Planck Institute of Molecular Physiology; Department of Chemical Biology; Otto-Hahn-Str. 11 44227 Dortmund Germany
| | - Kosuke Ohsawa
- Max Planck Institute of Molecular Physiology; Department of Chemical Biology; Otto-Hahn-Str. 11 44227 Dortmund Germany
| | - Georgios Konstantinidis
- Chemical Genomics Center of the Max Planck Society; Otto-Hahn-Str. 15 44227 Dortmund Germany
| | - Lucas Robke
- Max Planck Institute of Molecular Physiology; Department of Chemical Biology; Otto-Hahn-Str. 11 44227 Dortmund Germany
| | - Yao-Wen Wu
- Chemical Genomics Center of the Max Planck Society; Otto-Hahn-Str. 15 44227 Dortmund Germany
| | - Kamal Kumar
- Max Planck Institute of Molecular Physiology; Department of Chemical Biology; Otto-Hahn-Str. 11 44227 Dortmund Germany
| | - Herbert Waldmann
- Max Planck Institute of Molecular Physiology; Department of Chemical Biology; Otto-Hahn-Str. 11 44227 Dortmund Germany
- Technische Universität Dortmund; Fakultät Chemie und Chemische Biologie; Otto-Hahn-Str. 6 44227 Dortmund Germany
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17
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Laraia L, Ohsawa K, Konstantinidis G, Robke L, Wu YW, Kumar K, Waldmann H. Discovery of Novel Cinchona-Alkaloid-Inspired Oxazatwistane Autophagy Inhibitors. Angew Chem Int Ed Engl 2017; 56:2145-2150. [DOI: 10.1002/anie.201611670] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Indexed: 01/09/2023]
Affiliation(s)
- Luca Laraia
- Max Planck Institute of Molecular Physiology; Department of Chemical Biology; Otto-Hahn-Str. 11 44227 Dortmund Germany
| | - Kosuke Ohsawa
- Max Planck Institute of Molecular Physiology; Department of Chemical Biology; Otto-Hahn-Str. 11 44227 Dortmund Germany
| | - Georgios Konstantinidis
- Chemical Genomics Center of the Max Planck Society; Otto-Hahn-Str. 15 44227 Dortmund Germany
| | - Lucas Robke
- Max Planck Institute of Molecular Physiology; Department of Chemical Biology; Otto-Hahn-Str. 11 44227 Dortmund Germany
| | - Yao-Wen Wu
- Chemical Genomics Center of the Max Planck Society; Otto-Hahn-Str. 15 44227 Dortmund Germany
| | - Kamal Kumar
- Max Planck Institute of Molecular Physiology; Department of Chemical Biology; Otto-Hahn-Str. 11 44227 Dortmund Germany
| | - Herbert Waldmann
- Max Planck Institute of Molecular Physiology; Department of Chemical Biology; Otto-Hahn-Str. 11 44227 Dortmund Germany
- Technische Universität Dortmund; Fakultät Chemie und Chemische Biologie; Otto-Hahn-Str. 6 44227 Dortmund Germany
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Matsunaga H, Tajima D, Kawauchi T, Yasuyama T, Ando S, Ishizuka T. A dramatic synergistic effect of a flexible achiral linker on a rigid chiral cis-1,2-diamine bifunctional organocatalyst. Org Biomol Chem 2017; 15:2892-2896. [DOI: 10.1039/c6ob02743a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The combination of a “rigid” chiral bicyclic cis-1,2-diamine skeleton and a “flexible” achiral linker was newly designed as a bifunctional organocatalyst framework and showed excellent catalytic activity, accompanied by the reversal of enantioselection.
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Affiliation(s)
| | - Daisuke Tajima
- Faculty of Life Sciences
- Kumamoto University
- Kumamoto 862-0973
- Japan
| | - Tetsuro Kawauchi
- Faculty of Life Sciences
- Kumamoto University
- Kumamoto 862-0973
- Japan
| | - Takuro Yasuyama
- Faculty of Life Sciences
- Kumamoto University
- Kumamoto 862-0973
- Japan
| | - Shin Ando
- Faculty of Life Sciences
- Kumamoto University
- Kumamoto 862-0973
- Japan
| | - Tadao Ishizuka
- Faculty of Life Sciences
- Kumamoto University
- Kumamoto 862-0973
- Japan
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