1
|
Vastakaite G, Budinská A, Bögli CL, Boll LB, Wennemers H. Kinetic Resolution of β-Branched Aldehydes through Peptide-Catalyzed Conjugate Addition Reactions. J Am Chem Soc 2024; 146:19101-19107. [PMID: 38960380 PMCID: PMC11258695 DOI: 10.1021/jacs.4c03617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/27/2024] [Accepted: 05/28/2024] [Indexed: 07/05/2024]
Abstract
The catalytic kinetic resolution of racemic β-branched aldehydes offers a straightforward stereoselective entry to aldehydes and addition products. Yet, control over stereoselectivity is difficult due to the conformational flexibility of β-branched aldehydes. Here, we show that the peptide catalyst H-dPro-αMePro-Glu-NH2 resolves β-branched aldehydes through reaction with nitroolefins and provides γ-nitroaldehydes with three consecutive stereogenic centers in high yields and stereoselectivities. Kinetic, NMR spectroscopic, and computational studies provided insights into the selectivity-determining step and origins of the kinetic resolution.
Collapse
Affiliation(s)
| | | | - Claude L. Bögli
- Laboratorium für
Organische Chemie, ETH Zürich, D-CHAB, Vladimir-Prelog-Weg 3, Zürich 8093, Switzerland
| | - Linus B. Boll
- Laboratorium für
Organische Chemie, ETH Zürich, D-CHAB, Vladimir-Prelog-Weg 3, Zürich 8093, Switzerland
| | - Helma Wennemers
- Laboratorium für
Organische Chemie, ETH Zürich, D-CHAB, Vladimir-Prelog-Weg 3, Zürich 8093, Switzerland
| |
Collapse
|
2
|
Alexandridis A, Rancon T, Halliday A, Kochem A, Quintard A. Iron- and Organo-Catalyzed Borrowing Hydrogen for the Stereoselective Construction of Tetrahydropyrans. Org Lett 2024; 26:5788-5793. [PMID: 38935856 DOI: 10.1021/acs.orglett.4c01969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
Stereocontrolled oxa-Michael additions are challenging, given the high reversibility of the process, which ultimately leads to racemization of the newly formed stereocenters. When iron-catalyzed borrowing hydrogen from allylic alcohols was combined with a stereocontrolled organocatalytic oxa-Michael addition, a wide array of chiral tetrahydropyrans were efficiently prepared. The reaction could be performed in a diastereoselective manner from pre-existing stereocenters or enantioselectively from achiral substrates. The key to success was the reactivity of the iron complex, which was selective for allylic alcohol dehydrogenation and irreversibly led the reaction to the final product.
Collapse
Affiliation(s)
| | - Thibault Rancon
- Université Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
| | | | - Amélie Kochem
- Université Grenoble Alpes, CNRS, CEA, LCBM (UMR 5249), F-38000 Grenoble, France
| | - Adrien Quintard
- Université Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
| |
Collapse
|
3
|
Thopate SB, Magham LR, Dinda S, Chegondi R. Solvent-Mediated Enantioselective Rauhut-Currier Cyclization via Iminium and Enamine Activation. Org Lett 2023; 25:1072-1077. [PMID: 36779958 DOI: 10.1021/acs.orglett.2c04249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
In this work, we have developed an unconventional and highly enantioselective solvent-promoted Rauhut-Currier cyclization of enal-tethered cyclohexadienone by exploiting the reactivity of a simple Jørgensen-Hayashi catalyst through the merging of iminium and enamine activation. This asymmetric desymmetrization reaction has broad substrate scope in good yields with high to excellent enantioselectivity. DFT calculations suggest that the elimination of the alkoxy group is the rate-limiting step and that it proceeds through proton abstraction by solvent instead of a direct 1,3-proton shift.
Collapse
Affiliation(s)
- Satish B Thopate
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | | | | | - Rambabu Chegondi
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
4
|
De Oliveira Silva A, Harper JL, Fuhr KN, Lalancette RA, Cheong PHY, Brenner-Moyer SE. DyKAT by DiCat: Stereoconvergent Dienamine-Catalyzed Claisen Rearrangements. J Org Chem 2022; 87:10105-10113. [PMID: 35881006 DOI: 10.1021/acs.joc.2c01079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This Claisen rearrangement establishes the feasibility of DyKAT of γ-epimeric enals via dienamine formation to afford enantioenriched products. γ-Aryl and -alkyl enals, and exocyclic enals that introduce quaternary centers, are all amenable substrates. Products are readily converted into pyrrolidines or cyclopentenols. Notably, a reactive dienamine intermediate has been isolated from a catalytic reaction, fully characterized, and converted to product upon reexposure to reaction conditions. Product configuration arises from a directing C-H···π interaction in the transition state.
Collapse
Affiliation(s)
- Ana De Oliveira Silva
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Jordan L Harper
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331, United States
| | - Katherine N Fuhr
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Roger A Lalancette
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Paul Ha-Yeon Cheong
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331, United States
| | - Stacey E Brenner-Moyer
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, United States
| |
Collapse
|
5
|
Convenient synthesis of flavanone derivatives via oxa-Michael addition using catalytic amount of aqueous cesium fluoride. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153480] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
6
|
Peng T, Zhu H, Xu Y, Li D, Wang Y, Wang L, Liu X, Yang D, Wang R. Synergistic zinc catalyst mediated oxa-Michael kinetic resolution reaction. Org Chem Front 2021. [DOI: 10.1039/d1qo00402f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An oxa-Michael kinetic resolution reaction is developed to efficiently construct complexed polycyclic motifs by developing novel bifunctional zinc catalysts.
Collapse
Affiliation(s)
- Tianyu Peng
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- Institute of Drug Design & Synthesis
- Department of Pharmacology
- School of Basic Medical Sciences
- Lanzhou University
| | - Haiyong Zhu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- Institute of Drug Design & Synthesis
- Department of Pharmacology
- School of Basic Medical Sciences
- Lanzhou University
| | - Yingfan Xu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- Institute of Drug Design & Synthesis
- Department of Pharmacology
- School of Basic Medical Sciences
- Lanzhou University
| | - Dan Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- Institute of Drug Design & Synthesis
- Department of Pharmacology
- School of Basic Medical Sciences
- Lanzhou University
| | - Yuan Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- Institute of Drug Design & Synthesis
- Department of Pharmacology
- School of Basic Medical Sciences
- Lanzhou University
| | - Linqing Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- Institute of Drug Design & Synthesis
- Department of Pharmacology
- School of Basic Medical Sciences
- Lanzhou University
| | - Xin Liu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- Institute of Drug Design & Synthesis
- Department of Pharmacology
- School of Basic Medical Sciences
- Lanzhou University
| | - Dongxu Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- Institute of Drug Design & Synthesis
- Department of Pharmacology
- School of Basic Medical Sciences
- Lanzhou University
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- Institute of Drug Design & Synthesis
- Department of Pharmacology
- School of Basic Medical Sciences
- Lanzhou University
| |
Collapse
|
7
|
Chen D, Berhane IA, Chemler SR. Copper-Catalyzed Enantioselective Hydroalkoxylation of Alkenols for the Synthesis of Cyclic Ethers. Org Lett 2020; 22:7409-7414. [PMID: 32496794 PMCID: PMC7541751 DOI: 10.1021/acs.orglett.0c01691] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The copper-catalyzed enantioselective intramolecular hydroalkoxylation of unactivated alkenes for the synthesis of tetrahydrofurans, phthalans, isochromans, and morpholines from 4- and 5-alkenols is reported. The substrate scope is complementary to existing enantioselective alkene hydroalkoxylations and is broad with respect to substrate backbone and alkene substitution. The asymmetric induction and isotopic labeling studies support a polar/radical mechanism involving enantioselective oxycupration followed by C-[Cu] homolysis and hydrogen atom transfer. Synthesis of the antifungal insecticide furametpyr was accomplished.
Collapse
Affiliation(s)
- Dake Chen
- Chemistry Department, State University of New York at Buffalo, Buffalo, New York 14260, United States
| | - Ilyas A Berhane
- Chemistry Department, State University of New York at Buffalo, Buffalo, New York 14260, United States
| | - Sherry R Chemler
- Chemistry Department, State University of New York at Buffalo, Buffalo, New York 14260, United States
| |
Collapse
|
8
|
Mao B, Liu H, Yan Z, Xu Y, Xu J, Wang W, Wu Y, Guo H. Palladium‐Catalyzed Asymmetric [4+2] Cycloaddition of 2‐Methylidenetrimethylene Carbonate with Alkenes: Access to Chiral Tetrahydropyran‐Fused Spirocyclic Scaffolds. Angew Chem Int Ed Engl 2020; 59:11316-11320. [PMID: 32301254 DOI: 10.1002/anie.202002765] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Indexed: 01/23/2023]
Affiliation(s)
- Biming Mao
- College of Science China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 China
| | - Honglei Liu
- College of Science China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 China
| | - Zhengyang Yan
- College of Science China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 China
| | - Yi Xu
- College of Science China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 China
| | - Jiaqing Xu
- College of Science China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 China
| | - Wei Wang
- College of Public Health Zhengzhou University Zhengzhou 450001 P. R. China
| | - Yongjun Wu
- College of Public Health Zhengzhou University Zhengzhou 450001 P. R. China
| | - Hongchao Guo
- College of Science China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 China
| |
Collapse
|
9
|
Mao B, Liu H, Yan Z, Xu Y, Xu J, Wang W, Wu Y, Guo H. Palladium‐Catalyzed Asymmetric [4+2] Cycloaddition of 2‐Methylidenetrimethylene Carbonate with Alkenes: Access to Chiral Tetrahydropyran‐Fused Spirocyclic Scaffolds. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002765] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Biming Mao
- College of Science China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 China
| | - Honglei Liu
- College of Science China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 China
| | - Zhengyang Yan
- College of Science China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 China
| | - Yi Xu
- College of Science China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 China
| | - Jiaqing Xu
- College of Science China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 China
| | - Wei Wang
- College of Public Health Zhengzhou University Zhengzhou 450001 P. R. China
| | - Yongjun Wu
- College of Public Health Zhengzhou University Zhengzhou 450001 P. R. China
| | - Hongchao Guo
- College of Science China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 China
| |
Collapse
|
10
|
Liu J, Vasamsetty L, Anwar M, Yang S, Xu W, Liu J, Nagaraju S, Fang X. Organocatalyzed Kinetic Resolution of α-Functionalized Ketones: The Malonate Unit Leads the Way. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05608] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Jian Liu
- State Key Laboratory of Structural Chemistry, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Laxmaiah Vasamsetty
- State Key Laboratory of Structural Chemistry, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Muhammad Anwar
- State Key Laboratory of Structural Chemistry, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Shuang Yang
- State Key Laboratory of Structural Chemistry, University of Chinese Academy of Sciences, Fuzhou 350100, China
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Shanghai 200032, China
| | - Weici Xu
- State Key Laboratory of Structural Chemistry, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Jinggong Liu
- Orthopedics Department, Guangdong Provincial Hospital of Traditional Chinese Medicine, No. 111 Dade Road, Guangzhou 510120, China
| | - Sakkani Nagaraju
- State Key Laboratory of Structural Chemistry, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Xinqiang Fang
- State Key Laboratory of Structural Chemistry, University of Chinese Academy of Sciences, Fuzhou 350100, China
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Shanghai 200032, China
| |
Collapse
|
11
|
|
12
|
Mondal B, Balha M, Pan SC. Organocatalytic Asymmetric Synthesis of Highly Substituted Tetrahydrofurans and Tetrahydropyrans via Double Michael Addition Strategy. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800316] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Buddahdeb Mondal
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
| | - Megha Balha
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
| | - Subhas Chandra Pan
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
| |
Collapse
|
13
|
D'Elia CS, Goudedranche S, Constantieux T, Bella M, Bonne D, Rodriguez J. Expeditious Synthesis of Enantioenriched Tetrahydropyrans via
Chemoselective C−N
bond Cleavage of Aza-Oxa-Bicyclo[3.2.1]Octanes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700735] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - Marco Bella
- Sapienza Università di Roma; Dipartimento di Chimica; Piazzale Aldo Moro 5 00185 Roma Italia
| | - Damien Bonne
- Aix Marseille Univ; CNRS; Centrale Marseille; iSm2; Marseille France
| | - Jean Rodriguez
- Aix Marseille Univ; CNRS; Centrale Marseille; iSm2; Marseille France
| |
Collapse
|
14
|
Orue A, Uria U, Roca-López D, Delso I, Reyes E, Carrillo L, Merino P, Vicario JL. Racemic hemiacetals as oxygen-centered pronucleophiles triggering cascade 1,4-addition/Michael reaction through dynamic kinetic resolution under iminium catalysis. Development and mechanistic insights. Chem Sci 2017; 8:2904-2913. [PMID: 28451356 PMCID: PMC5376714 DOI: 10.1039/c7sc00009j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 01/28/2017] [Indexed: 11/21/2022] Open
Abstract
2-Hydroxydihydropyran-5-ones behave as excellent polyfunctional reagents able to react with enals through oxa-Michael/Michael process cascade under the combination of iminium and enamine catalysis. These racemic hemiacetalic compounds are used as unconventional O-pronucleophiles in the initial oxa-Michael reaction, also leading to the formation of a single stereoisomer under a dynamic kinetic resolution (DKR) process. Importantly, by using β-aryl or β-alkyl substituted α,β-unsaturated substrates as initial Michael acceptors either kinetically or thermodynamically controlled diastereoisomers were formed with high stereoselection through the careful selection of the reaction conditions. Finally, a complete experimental and computational study confirmed the initially proposed DKR process during the catalytic oxa-Michael/Michael cascade reaction and also explained the kinetic/thermodynamic pathway operating in each case.
Collapse
Affiliation(s)
- Ane Orue
- Department of Organic Chemistry II , University of the Basque Country (UPV/EHU) , P.O. Box 644 , 48080 Bilbao , Spain
| | - Uxue Uria
- Department of Organic Chemistry II , University of the Basque Country (UPV/EHU) , P.O. Box 644 , 48080 Bilbao , Spain
| | - David Roca-López
- Departamento de Síntesis y Estructura de Biomoléculas , Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) , Universidad de Zaragoza , CSIC , Spain
| | - Ignacio Delso
- Servicio de Resonancia Magnética Nuclear , Centro de Química y Materiales de Aragón (CEQMA) , Universidad de Zaragoza , CSIC , Spain
| | - Efraím Reyes
- Department of Organic Chemistry II , University of the Basque Country (UPV/EHU) , P.O. Box 644 , 48080 Bilbao , Spain
| | - Luisa Carrillo
- Department of Organic Chemistry II , University of the Basque Country (UPV/EHU) , P.O. Box 644 , 48080 Bilbao , Spain
| | - Pedro Merino
- Departamento de Síntesis y Estructura de Biomoléculas , Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) , Universidad de Zaragoza , CSIC , Spain
| | - Jose L Vicario
- Department of Organic Chemistry II , University of the Basque Country (UPV/EHU) , P.O. Box 644 , 48080 Bilbao , Spain
| |
Collapse
|
15
|
Si CM, Liu YW, Mao ZY, Han P, Du ZT, Wei BG. Asymmetric synthesis of epohelmins A, B and 3-epi ent-epohelmin A. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.10.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
16
|
Parhi B, Maity S, Ghorai P. Catalytic Asymmetric Conjugate Addition of Carboxylic Acids via Oxa-Michael Reaction of Peroxy Hemiacetals followed by Kornblum DeLaMare Fragmentation. Org Lett 2016; 18:5220-5223. [DOI: 10.1021/acs.orglett.6b02463] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Biswajit Parhi
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal By-pass
Road, Bhauri, Bhopal 462066, India
| | - Sanjay Maity
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal By-pass
Road, Bhauri, Bhopal 462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal By-pass
Road, Bhauri, Bhopal 462066, India
| |
Collapse
|
17
|
Johnson S, Tanaka F. Direct synthesis of C-glycosides from unprotected 2-N-acyl-aldohexoses via aldol condensation–oxa-Michael reactions with unactivated ketones. Org Biomol Chem 2016; 14:259-64. [DOI: 10.1039/c5ob02094h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
C-glycosides were synthesized from unprotected 2-N-acyl-aldohexoses and unactivated ketones in one pot via aldol condensation–oxa-Michael reactions.
Collapse
Affiliation(s)
- Sherida Johnson
- Chemistry and Chemical Bioengineering Unit
- Okinawa Institute of Science and Technology Graduate University
- Onna
- Japan
| | - Fujie Tanaka
- Chemistry and Chemical Bioengineering Unit
- Okinawa Institute of Science and Technology Graduate University
- Onna
- Japan
| |
Collapse
|
18
|
Affiliation(s)
- Jason S. Chen
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Gayan A. Abeykoon
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| |
Collapse
|
19
|
Gurubrahamam R, Cheng YS, Huang WY, Chen K. Recent Advances in Organocatalytic Kinetic Resolution for the Synthesis of Functionalized Products. ChemCatChem 2015. [DOI: 10.1002/cctc.201500455] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ramani Gurubrahamam
- Department of Chemistry; National Taiwan Normal University; Taipei Taiwan 116 R.O. China
| | - You-Song Cheng
- Department of Chemistry; National Taiwan Normal University; Taipei Taiwan 116 R.O. China
| | - Wan-Yun Huang
- Department of Chemistry; National Taiwan Normal University; Taipei Taiwan 116 R.O. China
| | - Kwunmin Chen
- Department of Chemistry; National Taiwan Normal University; Taipei Taiwan 116 R.O. China
| |
Collapse
|
20
|
Daub ME, Prudhomme J, Le Roch K, Vanderwal CD. Synthesis and potent antimalarial activity of kalihinol B. J Am Chem Soc 2015; 137:4912-5. [PMID: 25815413 PMCID: PMC4415034 DOI: 10.1021/jacs.5b01152] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Indexed: 11/28/2022]
Abstract
Of the 50+ kalihinane diterpenoids reported to date, only five had been tested for antimalarial activity, in spite of the fact that kalihinol A is the most potent among the members of the larger family of antimalarial isocyanoterpenes. We have validated a strategy designed to access many of the kalihinanes with a 12-step enantioselective synthesis of kalihinol B, the tetrahydrofuran isomer of kalihinol A (a tetrahydropyran). Kalihinol B shows similarly high potency against chloroquine-resistant Plasmodium falciparum.
Collapse
Affiliation(s)
- Mary Elisabeth Daub
- Department
of Chemistry, University of California,
Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
| | - Jacques Prudhomme
- Department
of Cell Biology and Neuroscience, University
of California, Riverside, 900 University Avenue, Riverside, California 92521, United States
| | - Karine Le Roch
- Department
of Cell Biology and Neuroscience, University
of California, Riverside, 900 University Avenue, Riverside, California 92521, United States
| | - Christopher D. Vanderwal
- Department
of Chemistry, University of California,
Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
| |
Collapse
|
21
|
Gurubrahamam R, Cheng YS, Chen K. Control of Five Contiguous Stereogenic Centers in an Organocatalytic Kinetic Resolution via Michael/Acetalization Sequence: Synthesis of Fully Substituted Tetrahydropyranols. Org Lett 2015; 17:430-3. [DOI: 10.1021/ol5033656] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ramani Gurubrahamam
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - You-Song Cheng
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Kwunmin Chen
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| |
Collapse
|
22
|
Roy S, Chen KF, Gurubrahamam R, Chen K. Organocatalytic Kinetic Resolution of Racemic Secondary Nitroallylic Alcohols Combined with Simultaneous Desymmetrization of Prochiral Cyclic Anhydrides. J Org Chem 2014; 79:8955-9. [DOI: 10.1021/jo501882q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Suparna Roy
- Department
of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Kan-Fu Chen
- Department
of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Ramani Gurubrahamam
- Department
of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Kwunmin Chen
- Department
of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| |
Collapse
|
23
|
Kobayashi Y, Taniguchi Y, Hayama N, Inokuma T, Takemoto Y. A Powerful Hydrogen-Bond-Donating Organocatalyst for the Enantioselective Intramolecular Oxa-Michael Reaction of α,β-Unsaturated Amides and Esters. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305492] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
24
|
Kobayashi Y, Taniguchi Y, Hayama N, Inokuma T, Takemoto Y. A Powerful Hydrogen-Bond-Donating Organocatalyst for the Enantioselective Intramolecular Oxa-Michael Reaction of α,β-Unsaturated Amides and Esters. Angew Chem Int Ed Engl 2013; 52:11114-8. [DOI: 10.1002/anie.201305492] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Indexed: 11/10/2022]
|
25
|
|
26
|
Corbett MT, Johnson JS. Enantioselective synthesis of hindered cyclic dialkyl ethers via catalytic oxa-Michael/Michael desymmetrization. Chem Sci 2013; 4:2828-2832. [PMID: 24683449 PMCID: PMC3964814 DOI: 10.1039/c3sc51022k] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An asymmetric oxa-Michael/Michael cascade reaction of p-quinols and α,β-unsaturated aldehydes provides access to hindered dialkyl ethers. A highly enantioselective oxa-Michael addition of a tertiary alcohol precedes an intramolecular cyclohexadienone desymmetrization, which allows for the concomitant formation of four contiguous stereocenters in a single step. The highly functionalized bicyclic frameworks are rapidly obtained from simple starting materials with good diastereoselection and serve as valuable precursors for further manipulation.
Collapse
Affiliation(s)
- Michael T. Corbett
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Jeffrey S. Johnson
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| |
Collapse
|
27
|
Dai Q, Rana NK, Zhao JCG. Highly Stereoselective Synthesis of 2,6-cis-Substituted Tetrahydropyrans Using a One-Pot Sequential Catalysis. Org Lett 2013; 15:2922-5. [DOI: 10.1021/ol400900h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Qipu Dai
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - Nirmal K. Rana
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - John Cong-Gui Zhao
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| |
Collapse
|
28
|
Hintermann L, Ackerstaff J, Boeck F. Inner Workings of a Cinchona Alkaloid Catalyzed Oxa-Michael Cyclization: Evidence for a Concerted Hydrogen-Bond-Network Mechanism. Chemistry 2013; 19:2311-21. [DOI: 10.1002/chem.201203505] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Indexed: 11/09/2022]
|
29
|
Wang C, Yang X, Raabe G, Enders D. A Short Asymmetric Synthesis of the Benzopyrano[3,4-c]pyrrolidine Coreviaan Organocatalytic Domino Oxa-Michael/Michael Reaction. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200472] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
30
|
Yeh LF, Anwar S, Chen K. The combination of domino process and kinetic resolution: organocatalytic synthesis of functionalised cyclopentenes by sequential SN2′-Michael reaction. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.06.085] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
31
|
McGarraugh PG, Johnston RC, Martínez-Muñoz A, Cheong PHY, Brenner-Moyer SE. Organocatalytic Kinetic Resolution Cascade Reactions: New Mechanistic and Stereochemical Manifold in Diphenyl Prolinol Silyl Ether Catalysis. Chemistry 2012; 18:10742-52. [DOI: 10.1002/chem.201104029] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 03/27/2012] [Indexed: 11/11/2022]
|
32
|
Roy S, Chen K. Three-Component Organocascade Kinetic Resolution of Racemic Nitroallylic Acetates via Sequential Iminium/Enamine Asymmetric Catalysis. Org Lett 2012; 14:2496-9. [DOI: 10.1021/ol300783e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Suparna Roy
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan 116, ROC
| | - Kwunmin Chen
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan 116, ROC
| |
Collapse
|
33
|
Yang S, He J. Heterogeneous asymmetric Henry–Michael one-pot reaction synergically catalyzed by grafted chiral bases and inherent achiral hydroxyls on mesoporous silica surface. Chem Commun (Camb) 2012; 48:10349-51. [DOI: 10.1039/c2cc35110b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|