1
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Zhang WW, Sha Q. B(C 6F 5) 3-Catalyzed Multicomponent Reactions of 2,3-Diketoesters, Amines, Allenes, and Nucleophiles: Synthesis of 2α-Functionalized Pyrroles. J Org Chem 2024. [PMID: 39146254 DOI: 10.1021/acs.joc.4c01221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
An efficient B(C6F5)3-catalyzed multicomponent reaction of 2,3-diketoesters, amines, allenes, and nucleophiles was reported, which afforded 2α-functionalized pyrroles in moderate to good yields. The reaction features low catalyst loading, usage of a small amount of solvent, high atom economy, tunable installation of diverse functional groups at 2α-position, and water being formed as the byproduct. This is the first multicomponent reaction that combines vicinal tricarbonyl compounds with allenes.
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Affiliation(s)
- Wei-Wei Zhang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu, Nanjing 210095, P. R. China
| | - Qiang Sha
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu, Nanjing 210095, P. R. China
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2
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3
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Abstract
Natural products have significant biological properties that arise from their fascinating molecular architectures. Despite many advances in synthetic method development, the efficient synthesis of highly-functionalized and structurally intricate natural products...
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4
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Ma D, Martin BS, Gallagher KS, Saito T, Dai M. One-Carbon Insertion and Polarity Inversion Enabled a Pyrrole Strategy to the Total Syntheses of Pyridine-Containing Lycopodium Alkaloids: Complanadine A and Lycodine. J Am Chem Soc 2021; 143:16383-16387. [PMID: 34570487 PMCID: PMC9123642 DOI: 10.1021/jacs.1c08626] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Complanadine A and lycodine are representative members of the Lycopodium alkaloids with a characteristic pyridine-containing tetracyclic skeleton. Complanadine A has demonstrated promising neurotrophic activity and potential for persistent pain management. Herein we report a pyrrole strategy enabled by one-carbon insertion and polarity inversion for concise total syntheses of complanadine A and lycodine. The use of a pyrrole as the pyridine precursor allowed the rapid construction of their tetracyclic skeleton via a one-pot Staudinger reduction, amine-ketone condensation, and Mannich-type cyclization. The pyrrole group was then converted to the desired pyridine by the Ciamician-Dennstedt rearrangement via a one-carbon insertion process, which also simultaneously introduced a chloride at C3 for the next C-H arylation. Other key steps include a direct anti-Markovnikov hydroazidation, a Mukaiyama-Michael addition, and a Paal-Knorr pyrrole synthesis. Lycodine and complanadine A were prepared in 8 and 11 steps, respectively, from a readily available known compound.
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Affiliation(s)
| | | | - Katelyn S. Gallagher
- Department of Chemistry and Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, United States
| | - Takeru Saito
- Department of Chemistry and Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, United States
| | - Mingji Dai
- Department of Chemistry and Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, United States
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5
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Hu W, Huang B, Niu B, Cai M. Recyclable heterogeneous gold(I)-catalyzed oxidation of internal acylalkynes: Practical access to vicinal tricarbonyls. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152953] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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6
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Yu T, Ji F, Huang D, Gao Y, Shi Z, Sha X, Xu J, You S, Zhang M, Sha Q. Facile synthesis of penta-substituted pyrroles and pyrrole-fused piperidin-4-ones via four component reactions of 2,3-diketoesters, anilines and enaminones. Org Chem Front 2021. [DOI: 10.1039/d1qo00921d] [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
Novel and facile multicomponent reactions of 2,3-diketoesters, anilines and enaminones were developed. A variety of penta-substituted pyrroles and pyrrole-fused piperidin-4-ones can be easily accessed via interception of cationic intermediates.
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Affiliation(s)
- Tongyan Yu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing 210095, P. R. China
| | - Fei Ji
- Department of Pharmaceutical Engineering, China Pharmaceutical University, 639 Longmian Avenue, Jiangning District, Nanjing, 211198, P. R. China
| | - Daichuan Huang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing 210095, P. R. China
| | - Ya Gao
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing 210095, P. R. China
| | - Zhaoping Shi
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing 210095, P. R. China
| | - Xuan Sha
- Department of Pharmaceutical Engineering, China Pharmaceutical University, 639 Longmian Avenue, Jiangning District, Nanjing, 211198, P. R. China
| | - Jiangyan Xu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing 210095, P. R. China
| | - Siliang You
- State Key laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing 210095, P. R. China
| | - Mingzhi Zhang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing 210095, P. R. China
| | - Qiang Sha
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing 210095, P. R. China
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7
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Filippov IP, Novikov MS, Khlebnikov AF, Rostovskii NV. Pseudopericyclic Dearomative 1,6-Cyclization of 1-(2-Pyridyl)-2-azabuta-1,3-dienes: Synthesis and Ring-Chain Valence Equilibria of 4H
-Pyrido[1,2-a
]pyrazines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000210] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ilya P. Filippov
- Institute of Chemistry; St. Petersburg State University; 7/9 Universitetskaya nab. 199034 St. Petersburg Russia
| | - Mikhail S. Novikov
- Institute of Chemistry; St. Petersburg State University; 7/9 Universitetskaya nab. 199034 St. Petersburg Russia
| | - Alexander F. Khlebnikov
- Institute of Chemistry; St. Petersburg State University; 7/9 Universitetskaya nab. 199034 St. Petersburg Russia
| | - Nikolai V. Rostovskii
- Institute of Chemistry; St. Petersburg State University; 7/9 Universitetskaya nab. 199034 St. Petersburg Russia
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8
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Vargas DF, Larghi EL, Kaufman TS. The 6π-azaelectrocyclization of azatrienes. Synthetic applications in natural products, bioactive heterocycles, and related fields. Nat Prod Rep 2019; 36:354-401. [PMID: 30090891 DOI: 10.1039/c8np00014j] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Covering: 2006 to 2018 The application of the 6π-azaelectrocyclization of azatrienes as a key strategy for the synthesis of natural products, their analogs and related bioactive or biomedically-relevant compounds (from 2006 to date) is comprehensively reviewed. Details about reaction optimization studies, relevant reaction mechanisms and conditions are also discussed.
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Affiliation(s)
- Didier F Vargas
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531, 2000 Rosario, Argentina.
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9
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Rodrigues L, Majik MS. Progress towards the Total Syntheses of
Lycopodium
Alkaloid, Lycopladine A. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900262] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lima Rodrigues
- School of Chemical SciencesGoa University Taleigao Plateau Goa India
| | - Mahesh Satu Majik
- School of Chemical SciencesGoa University Taleigao Plateau Goa India
- Department of ChemistryDnyanprassarak Mandal's College and Research Centre Assago Goa 403 507
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10
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Li Y, Han J, Luo H, An Q, Cao XP, Li B. Access to Benzylic Quaternary Carbons from Aromatic Ketones. Org Lett 2019; 21:6050-6053. [PMID: 31310556 DOI: 10.1021/acs.orglett.9b02204] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The construction of benzylic all-carbon quaternary stereocenters, which are ubiquitous in biomolecules and drugs, is a task of high practical significance. Herein, we disclose a highly efficient one-pot method of constructing all-carbon quaternary structural units from aryl ketones, revealing that the entire process involves three consecutive chemical events, namely nucleophilic addition, Meinwald 1,2-hydrogen migration, and alkylation. Interestingly, dimerization of acetophenones results in formation of 2,4-diarylfurans under the employed conditions rather than the quaternary carbon products.
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Affiliation(s)
- You Li
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou , 730000 , P. R. China
| | - Jingpeng Han
- School of Chemistry and Chemical Engineering , Chongqing University , 174 Shazheng Street , Chongqing , 400030 , P. R. China
| | - Han Luo
- School of Chemistry and Chemical Engineering , Chongqing University , 174 Shazheng Street , Chongqing , 400030 , P. R. China
| | - Qiaoyu An
- School of Chemistry and Chemical Engineering , Chongqing University , 174 Shazheng Street , Chongqing , 400030 , P. R. China
| | - Xiao-Ping Cao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou , 730000 , P. R. China
| | - Baosheng Li
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou , 730000 , P. R. China.,School of Chemistry and Chemical Engineering , Chongqing University , 174 Shazheng Street , Chongqing , 400030 , P. R. China
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11
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Dubovtsev AY, Dar’in DV, Kukushkin VY. Gold(I)-Catalyzed Oxidation of Acyl Acetylenes to Vicinal Tricarbonyls. Org Lett 2019; 21:4116-4119. [DOI: 10.1021/acs.orglett.9b01297] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Alexey Yu. Dubovtsev
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Dmitry V. Dar’in
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Vadim Yu. Kukushkin
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
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12
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Saborit GV, Cativiela C, Jiménez AI, Bonjoch J, Bradshaw B. Synthesis of cis-hydrindan-2,4-diones bearing an all-carbon quaternary center by a Danheiser annulation. Beilstein J Org Chem 2018; 14:2597-2601. [PMID: 30410621 PMCID: PMC6204772 DOI: 10.3762/bjoc.14.237] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 09/21/2018] [Indexed: 11/23/2022] Open
Abstract
A straightforward synthetic entry to functionalized hydrindane compounds based on a rapid assembly of the core nucleus by a Danheiser cycloaddition is reported. Valuable bicyclic building blocks containing the fused five and six-membered carbocyclic ring system can be achieved in only four steps from a simple acyclic β-keto ester.
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Affiliation(s)
- Gisela V Saborit
- Laboratori de Química Orgànica, Facultat de Farmàcia, IBUB, Universitat de Barcelona, Av. Joan XXIII s/n, 08028-Barcelona, Spain
| | - Carlos Cativiela
- Departamento de Química Orgánica Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Ana I Jiménez
- Departamento de Química Orgánica Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Josep Bonjoch
- Laboratori de Química Orgànica, Facultat de Farmàcia, IBUB, Universitat de Barcelona, Av. Joan XXIII s/n, 08028-Barcelona, Spain
| | - Ben Bradshaw
- Laboratori de Química Orgànica, Facultat de Farmàcia, IBUB, Universitat de Barcelona, Av. Joan XXIII s/n, 08028-Barcelona, Spain
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13
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Synthesis of Polysubstituted 3-Methylisoquinolines through the 6π-Electron Cyclization/Elimination of 1-Azatrienes derived from 1,1-Dimethylhydrazine. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Sha Q, Wang J, Doyle MP. Synthesis of 1 H-Pyrrol-3(2 H)-ones via Three-Component Reactions of 2,3-Diketo Esters, Amines, and Ketones. J Org Chem 2018; 83:11288-11297. [PMID: 30141636 DOI: 10.1021/acs.joc.8b01887] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient one-pot, three-component reaction of 2,3-diketo esters with amines and ketones has been developed for the synthesis of 1 H-pyrrol-3(2 H)-ones. By using trifluoroacetic acid (TFA) as the additive and acetonitrile (MeCN) as the solvent, this convenient method provides a library of 1 H-pyrrol-3(2 H)-ones in moderate to good yields. The simple protocol features readily available starting materials, a straightforward process, good functional group tolerance, and broad substrate scope.
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Affiliation(s)
- Qiang Sha
- Department of Chemistry, College of Sciences , Nanjing Agricultural University , Nanjing 210095 , P. R. China
| | - Junke Wang
- Department of Chemistry, College of Sciences , Nanjing Agricultural University , Nanjing 210095 , P. R. China
| | - Michael P Doyle
- Department of Chemistry , The University of Texas at San Antonio , San Antonio , Texas 78249 , United States
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15
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Ishiuchi K, Hirose D, Suzuki T, Nakayama W, Jiang WP, Monthakantirat O, Wu JB, Kitanaka S, Makino T. Identification of Lycopodium Alkaloids Produced by an Ultraviolet-Irradiated Strain of Paraboeremia, an Endophytic Fungus from Lycopodium serratum var. longipetiolatum. JOURNAL OF NATURAL PRODUCTS 2018; 81:1143-1147. [PMID: 29676580 DOI: 10.1021/acs.jnatprod.7b00627] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
12- epi-Lycopodine (1), a Lycopodium alkaloid, along with lycopodine (2) and huperzine A (3), were discovered in the mycelium of Paraboeremia sp. Lsl3KI076, a UV-irradiated strain of Paraboeremia sp. Lsl3, an endophytic fungus from Lycopodium serratum Thunb. var. longipetiolatum Spring. Additionally, a trace of 1 was isolated from Phlegmariurus nummulariifolius (Blume) Ching, and the structure was elucidated on the basis of spectroscopic data. This is the first report proving that a new naturally occurring Lycopodium alkaloid can be obtained from an endophytic fungus.
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Affiliation(s)
- Kan'ichiro Ishiuchi
- Graduate School of Pharmaceutical Sciences , Nagoya City University , 3-1, Tanabe-Dori , Mizuho-ku, Nagoya 467-8603 , Aichi , Japan
| | - Dai Hirose
- School of Pharmacy , Nihon University , 7-7-1, Narashinodai , Funabashi , 274-8555 , Chiba , Japan
| | - Takuma Suzuki
- Graduate School of Pharmaceutical Sciences , Nagoya City University , 3-1, Tanabe-Dori , Mizuho-ku, Nagoya 467-8603 , Aichi , Japan
| | - Waka Nakayama
- Graduate School of Pharmaceutical Sciences , Nagoya City University , 3-1, Tanabe-Dori , Mizuho-ku, Nagoya 467-8603 , Aichi , Japan
| | - Wen-Ping Jiang
- School of Pharmacy , China Medical University , No. 91, Hsueh-Shih R. , Taichung 40402 , Taiwan
| | - Orawan Monthakantirat
- Faculty of Pharmaceutical Sciences , Khon Kaen University , Khon Kaen 40002 , Thailand
| | - Jin-Bin Wu
- School of Pharmacy , China Medical University , No. 91, Hsueh-Shih R. , Taichung 40402 , Taiwan
| | - Susumu Kitanaka
- School of Pharmacy , Nihon University , 7-7-1, Narashinodai , Funabashi , 274-8555 , Chiba , Japan
| | - Toshiaki Makino
- Graduate School of Pharmaceutical Sciences , Nagoya City University , 3-1, Tanabe-Dori , Mizuho-ku, Nagoya 467-8603 , Aichi , Japan
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16
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Chen S, Wang J, Qiu FG. A divergent and concise total synthesis of (-)-lycoposerramine R and (+)-lycopladine A. Chem Commun (Camb) 2018; 54:3598-3600. [PMID: 29568827 DOI: 10.1039/c8cc01626g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A concise, asymmetric and divergent synthesis of lycoposerramine R and lycopladine A is presented. The synthesis features the palladium-catalyzed cycloalkenylation of a silyl enol ether for assembling the 5/6-hydrindane system and generating a quaternary carbon center in one step.
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Affiliation(s)
- Sheng Chen
- Guangzhou Institute of Biomedicine and Health, The Chinese Academy of Sciences, 190 Kaiyuan Ave., The Science Park of Guangzhou, Guangdong 510530, China. and The University of The Chinese Academy of Sciences, Beijing, 100049, China
| | - Jinming Wang
- Guangzhou Institute of Biomedicine and Health, The Chinese Academy of Sciences, 190 Kaiyuan Ave., The Science Park of Guangzhou, Guangdong 510530, China. and The University of The Chinese Academy of Sciences, Beijing, 100049, China
| | - Fayang G Qiu
- Guangzhou Institute of Biomedicine and Health, The Chinese Academy of Sciences, 190 Kaiyuan Ave., The Science Park of Guangzhou, Guangdong 510530, China. and The University of The Chinese Academy of Sciences, Beijing, 100049, China
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17
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Hartrampf FWW, Trauner D. Total Synthesis of Lycopladine A and Carinatine A via a Base-Mediated Carbocyclization. J Org Chem 2017; 82:8206-8212. [DOI: 10.1021/acs.joc.7b00908] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Felix W. W. Hartrampf
- Department
of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, 81377 München, Germany
| | - Dirk Trauner
- Department
of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, 81377 München, Germany
- Department
of Chemistry, New York University, 100 Washington Square East, Room
712, New York, New York 10003, United States
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18
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Li Y, Li J, Ding H, Li A. Recent advances on the total synthesis of alkaloids in mainland China. Natl Sci Rev 2017. [DOI: 10.1093/nsr/nwx050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
AbstractAlkaloids are a large family of natural products that mostly contain basic nitrogen atoms. Because of their intriguing structures and important functions, they have long been popular targets for synthetic organic chemists. China's chemists have made significant progress in the area of alkaloid synthesis over past decades. In this article, selected total syntheses of alkaloids from research groups in mainland China during the period 2011–16 are highlighted.
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Affiliation(s)
- Yong Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing 312000, China
| | - Jian Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310028, China
| | - Ang Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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19
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Enantioselective Iridium-Catalyzed Allylic Substitution with 2-Methylpyridines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700433] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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20
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Liu XJ, You SL. Enantioselective Iridium-Catalyzed Allylic Substitution with 2-Methylpyridines. Angew Chem Int Ed Engl 2017; 56:4002-4005. [PMID: 28266102 DOI: 10.1002/anie.201700433] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Indexed: 12/22/2022]
Abstract
An enantioselective iridium-catalyzed allylic substitution with a set of highly unstabilized nucleophiles generated in situ from 2-methylpyridines is described. Enantioenriched 2-substituted pyridines, which are frequently encountered in natural products and pharmaceuticals, could be easily constructed by this simple method in good yields and excellent enantioselectivity. The synthetic utility of the pyridine products is demonstrated through the synthesis of a key intermediate of a reported Na+ /H+ exchanger inhibitor and the total synthesis of (-)-lycopladine A.
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Affiliation(s)
- Xi-Jia Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China
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21
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Ishiuchi K, Nakayama W, Monthakantirat O, Fujikawa K, Watthana S, Kitanaka S. Phlenumdines A−C, New Lycopodium Alkaloids Isolated from Phlegmariurus nummulariifolius. HETEROCYCLES 2017. [DOI: 10.3987/com-17-13797] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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