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Hernández D, Porras M, Boto A. Structural diversity using amino acid "Customizable Units": conversion of hydroxyproline (Hyp) into nitrogen heterocycles. Amino Acids 2022; 54:955-966. [PMID: 35414005 PMCID: PMC9213323 DOI: 10.1007/s00726-022-03159-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/20/2022] [Indexed: 12/01/2022]
Abstract
The ability of amino acid “customizable units” to generate structural diversity is illustrated by the conversion of 4-hydroxyproline (Hyp) units into a variety of nitrogen heterocycles. After a first common step, where the unit underwent a one-pot decarboxylation–alkylation reaction to afford 2-alkylpyrrolidines with high stereoselectivity, a divergent step was carried out. Thus, the deprotected 4-hydroxy group was used either to initiate a radical scission that afforded aliphatic β-amino aldehydes, or to carry out an elimination reaction, to give 2-alkyl-2,5-dihydro-1H-pyrroles. In the first case, the amines underwent a tandem reductive amination–cyclization to afford β-amino-δ-lactams, an efficient rigidifying unit in peptides. Different lactam N-substituents, such as alkylamines, peptides, and alkenyl chains suitable for olefin metathesis were introduced this way. In the second case, the pyrrole derivatives were efficiently converted into alkaloid and iminosugar derivatives in good global yields and with excellent stereoselectivity.
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Affiliation(s)
- Dácil Hernández
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez, 3, 38206, La Laguna, Tenerife, Spain.
| | - Marina Porras
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez, 3, 38206, La Laguna, Tenerife, Spain
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez, 3, 38206, La Laguna, Tenerife, Spain.
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2
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O
2
‐Assisted Four‐Component Reaction of Vinyl Magnesium Bromide with Chiral
N
‐
tert
‐Butanesulfinyl Imines To Form
syn
‐1,3‐Amino Alcohols. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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3
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Wang R, Luo J, Zheng C, Zhang H, Gao L, Song Z. O 2 -Assisted Four-Component Reaction of Vinyl Magnesium Bromide with Chiral N-tert-Butanesulfinyl Imines To Form syn-1,3-Amino Alcohols. Angew Chem Int Ed Engl 2021; 60:24644-24649. [PMID: 34523225 DOI: 10.1002/anie.202109566] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Indexed: 11/10/2022]
Abstract
An O2 -assisted, four-component reaction has been developed to synthesize a wide range of syn-1,3-amino alcohols in one step. The reaction proceeds by oxygenation of vinyl magnesium bromide (component-I) with O2 (component-II) to give a magnesium enolate of acetaldehyde, which undergoes addition to a chiral N-tert-butanesulfinyl imine (component-III) followed by a sequential addition with excess vinyl magnesium bromide (component-IV). The approach allows diastereoselective synthesis of anti/syn- and syn/syn-3-amino-1,5-diols in good yields with high diastereoselectivity. The method was illustrated in an efficient, four-step synthesis of piperidine alkaloid (-)-2'-epi-ethylnorlobelol.
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Affiliation(s)
- Runping Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Jingfan Luo
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Chunmei Zheng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Hongyun Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
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4
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Kim M, Park B, Shin M, Kim S, Kim J, Baik MH, Cho SH. Copper-Catalyzed Enantiotopic-Group-Selective Allylation of gem-Diborylalkanes. J Am Chem Soc 2021; 143:1069-1077. [DOI: 10.1021/jacs.0c11750] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Minjae Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Bohyun Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Minkyeong Shin
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Suyeon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Junghoon Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Seung Hwan Cho
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
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5
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Bonandi E, Marzullo P, Foschi F, Perdicchia D, Presti LL, Sironi M, Pieraccini S, Gambacorta G, Saupe J, Dalla Via L, Passarella D. Stereodivergent Diversity-Oriented Synthesis: Exploiting the Versatility of 2-Piperidine Ethanol. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900461] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Elisa Bonandi
- Dipartimento di Chimica - Università degli Studi di Milano; Via Golgi, 19 20133 Milano Italy
| | - Paola Marzullo
- Dipartimento di Chimica - Università degli Studi di Milano; Via Golgi, 19 20133 Milano Italy
| | - Francesca Foschi
- Dipartimento di Chimica - Università degli Studi di Milano; Via Golgi, 19 20133 Milano Italy
| | - Dario Perdicchia
- Dipartimento di Chimica - Università degli Studi di Milano; Via Golgi, 19 20133 Milano Italy
| | - Leonardo Lo Presti
- Dipartimento di Chimica - Università degli Studi di Milano; Via Golgi, 19 20133 Milano Italy
| | - Maurizio Sironi
- Dipartimento di Chimica - Università degli Studi di Milano; Via Golgi, 19 20133 Milano Italy
| | - Stefano Pieraccini
- Dipartimento di Chimica - Università degli Studi di Milano; Via Golgi, 19 20133 Milano Italy
| | - Guido Gambacorta
- Dipartimento di Chimica - Università degli Studi di Milano; Via Golgi, 19 20133 Milano Italy
| | - Joern Saupe
- AnalytiCon Discovery GmbH; Hermannswerder Haus 17 14473 Potsdam Germany
| | - Lisa Dalla Via
- Dipartimento di Scienze del Farmaco; Università degli Studi di Padova; Via F. Marzolo, 5 35131 Padova Italy
| | - Daniele Passarella
- Dipartimento di Chimica - Università degli Studi di Milano; Via Golgi, 19 20133 Milano Italy
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7
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Enzymatic Kinetic Resolution of 2-Piperidineethanol for the Enantioselective Targeted and Diversity Oriented Synthesis. Int J Mol Sci 2015; 17:ijms17010017. [PMID: 26712740 PMCID: PMC4730264 DOI: 10.3390/ijms17010017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 12/11/2015] [Accepted: 12/15/2015] [Indexed: 01/22/2023] Open
Abstract
2-Piperidineethanol (1) and its corresponding N-protected aldehyde (2) were used for the synthesis of several natural and synthetic compounds. The existence of a stereocenter at position 2 of the piperidine skeleton and the presence of an easily-functionalized group, such as the alcohol, set 1 as a valuable starting material for enantioselective synthesis. Herein, are presented both synthetic and enzymatic methods for the resolution of the racemic 1, as well as an overview of synthesized natural products starting from the enantiopure 1.
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8
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Boehmeriasin A as new lead compound for the inhibition of topoisomerases and SIRT2. Eur J Med Chem 2015; 92:766-75. [DOI: 10.1016/j.ejmech.2015.01.038] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 01/15/2015] [Accepted: 01/19/2015] [Indexed: 12/12/2022]
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9
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Chang MY, Lin CY, Wu TC, Sun PP. Synthesis ofN-Tosylhomosphinganine andN-Tosylsedridine. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200800063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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10
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Schrittwieser JH, Resch V. The role of biocatalysis in the asymmetric synthesis of alkaloids. RSC Adv 2013; 3:17602-17632. [PMID: 25580241 PMCID: PMC4285126 DOI: 10.1039/c3ra42123f] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 06/28/2013] [Indexed: 12/11/2022] Open
Abstract
Alkaloids are not only one of the most intensively studied classes of natural products, their wide spectrum of pharmacological activities also makes them indispensable drug ingredients in both traditional and modern medicine. Among the methods for their production, biotechnological approaches are gaining importance, and biocatalysis has emerged as an essential tool in this context. A number of chemo-enzymatic strategies for alkaloid synthesis have been developed over the years, in which the biotransformations nowadays take an increasingly 'central' role. This review summarises different applications of biocatalysis in the asymmetric synthesis of alkaloids and discusses how recent developments and novel enzymes render innovative and efficient chemo-enzymatic production routes possible.
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Affiliation(s)
- Joerg H Schrittwieser
- Department of Biotechnology , Delft University of Technology , Julianalaan 136 , 2628 BL Delft , The Netherlands . ; ; ; Tel: +31 152 782683
| | - Verena Resch
- Department of Biotechnology , Delft University of Technology , Julianalaan 136 , 2628 BL Delft , The Netherlands . ; ; ; Tel: +31 152 782683
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11
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Henry–Nef reaction: a practical and versatile chiral pool route to 2-substituted pyrrolidine and piperidine alkaloids. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.055] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Li L, Li Z, Huang D, Wang H, Shi Y. Chiral phosphoric acid catalyzed enantioselective sulfamination of amino-alkenes. RSC Adv 2013. [DOI: 10.1039/c3ra40307f] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [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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Katsumura S, Kobayashi T, Sakaguchi T. One-Pot Asymmetric 6π-Azaelectrocyclization as a New Strategy for Alkaloid Synthesis. HETEROCYCLES 2013. [DOI: 10.3987/rev-12-761] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Piao F, Mishra MK, Jang DO. RETRACTED: Asymmetric synthesis of highly enantioenriched 2-substituted piperidines and 6-substituted piperidine-2-ones by a combination enantioselective hydrazone allylation with ring closing metathesis. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.06.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Kobayashi T, Hasegawa F, Hirose Y, Tanaka K, Mori H, Katsumura S. Stereocontrolled Synthesis of Substituted Chiral Piperidines viaOne-Pot Asymmetric 6π-Azaelectrocyclization: Asymmetric Syntheses of(−)-Dendroprimine, (+)-7-Epidendroprimine, (+)-5-Epidendroprimine, and (+)-5,7-Epidendroprimine. J Org Chem 2012; 77:1812-32. [DOI: 10.1021/jo202350z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Toyoharu Kobayashi
- School of Science and Technology, Kwansei Gakuin University, Gakuen 2-1, Sanda, Hyogo 669-1337, Japan.
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16
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Kolleth A, Christoph S, Arseniyadis S, Cossy J. Kinetic resolution of propargylamines via a highly enantioselective non-enzymatic N-acylation process. Chem Commun (Camb) 2012; 48:10511-3. [DOI: 10.1039/c2cc35719d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Coia N, Mokhtari N, Vasse JL, Szymoniak J. Diastereoselective access to nonracemic 2-cis-substituted and 2,6-cis-disubstituted piperidines. Org Lett 2011; 13:6292-5. [PMID: 22067062 DOI: 10.1021/ol202796w] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Access to nonracemic amino ketones via a hydrozirconation/transmetalation/acylation sequence applied to Boc-protected 1-aminobut-3-enes is presented. This method was applied to the stereoselective synthesis of cyclic imines (or iminiums) which were diastereoselectively converted into 2-cis-substituted and 2,6-cis-disubstituted piperidines. The potential of this approach in the field of alkaloid synthesis was illustrated by the synthesis of (-)-coniine and (-)-indolizidine 209D. Furthermore, access to indolizidines bearing a quaternary center could also be envisioned through this strategy.
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Affiliation(s)
- Nicolas Coia
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 6229) and Université de Reims, 51687 Reims Cedex 2, France
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18
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Riva E, Rencurosi A, Gagliardi S, Passarella D, Martinelli M. Synthesis of (+)-dumetorine and congeners by using flow chemistry technologies. Chemistry 2011; 17:6221-6. [PMID: 21506188 DOI: 10.1002/chem.201100300] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Indexed: 11/05/2022]
Abstract
An efficient total synthesis of the natural alkaloid (+)-dumetorine by using flow technology is described. The process entailed five separate steps starting from the enantiopure (S)-2-(piperidin-2-yl)ethanol 4 with 29% overall yield. Most of the reactions were carried out by exploiting solvent superheating and by using packed columns of immobilized reagents or scavengers to minimize handling. New protocols for performing classical reactions under continuous flow are disclosed: the ring-closing metathesis reaction with a novel polyethylene glycol-supported Hoveyda catalyst and the unprecedented flow deprotection/Eschweiler-Clarke methylation sequence. The new protocols developed for the synthesis of (+)-dumetorine were applied to the synthesis of its simplified natural congeners (-)-sedamine and (+)-sedridine.
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Affiliation(s)
- Elena Riva
- Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
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19
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Mukherjee P, Widenhoefer RA. Gold(I)-catalyzed intramolecular amination of allylic alcohols with alkylamines. Org Lett 2011; 13:1334-7. [PMID: 21314103 PMCID: PMC3429346 DOI: 10.1021/ol103175w] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A 1:1 mixture of (1)AuCl [1 = P(t-Bu)(2)o-biphenyl] and AgSbF(6) catalyzes the intramolecular amination of allylic alcohols with alkylamines to form substituted pyrrolidine and piperidine derivatives. Gold(I)-catalyzed cyclization of (R,Z)-8-(N-benzylamino)-3-octen-2-ol (96% ee, 95% de) led to isolation of (R,E)-1-benzyl-2-(1-propenyl)piperidine in 99% yield with 96% ee, consistent with the net syn addition of the amine relative to the departing hydroxyl group.
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Affiliation(s)
- Paramita Mukherjee
- Duke University, Department of Chemistry, French Family Science Center, Durham, NC 27708–0346
| | - Ross A. Widenhoefer
- Duke University, Department of Chemistry, French Family Science Center, Durham, NC 27708–0346
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Borsini E, Broggini G, Colombo F, Khansaa M, Fasana A, Galli S, Passarella D, Riva E, Riva S. Enantiopure 2-piperidylacetaldehyde as a useful building block in the diversity-oriented synthesis of polycyclic piperidine derivatives. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.01.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Coldham I, Leonori D. Regioselective and stereoselective copper(I)-promoted allylation and conjugate addition of N-Boc-2-lithiopyrrolidine and N-Boc-2-lithiopiperidine. J Org Chem 2010; 75:4069-77. [PMID: 20469892 DOI: 10.1021/jo100415x] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Copper salts have been screened for transmetalation and electrophilic quench of N-tert-butoxycarbonyl-2-lithiopyrrolidine (N-Boc-2-lithiopyrrolidine) and N-Boc-2-lithiopiperidine, formed by deprotonation of N-Boc-pyrrolidine and N-Boc-piperidine, respectively. Transmetalation with zinc chloride then (lithium chloride solubilized) copper cyanide followed by allylation typically gives mixtures of regioisomers (S(N)2 and S(N)2' products), whereas transmetalation with copper iodide.TMEDA then allylation occurs regioselectively (S(N)2 mechanism). Addition to an enone or alpha,beta-unsaturated ester occurs by 1,4-addition. Asymmetric deprotonation of N-Boc-pyrrolidine or dynamic resolution in the presence of a chiral ligand of N-Boc-2-lithiopiperidine followed by the zinc/copper chemistry was successful and gave the allylated pyrrolidine and piperidine products with good enantioselectivity, although use of the copper iodide chemistry resulted in some loss of enantiopurity. The chemistry provides formal syntheses of (+)-allosedridine, (+)-lasubine II, and (+)-pseudohygroline and has been used for the synthesis of (+)-coniine, (-)-pelletierine, (+)-coniceine, (-)-norhygrine, and the ant extract alkaloids cis- and trans-2-butyl-5-propylpyrrolidine.
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Affiliation(s)
- Iain Coldham
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, UK.
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22
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Wang G, Vedejs E. Stereocontrol in N-directed hydroboration: synthesis of amino alcohols related to the piperidine alkaloids. Org Lett 2010; 11:1059-61. [PMID: 19182927 DOI: 10.1021/ol802781c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of 2-(2'-alkenyl)-piperidine boranes with iodine or triflic acid induces internal hydroboration with high regiocontrol, even with a terminal alkene (R = H). Good stereocontrol is possible for the N-benzyl substrates. Comparisons with acyclic model structures show that the source of regiocontrol with the terminal alkene is due to a steric effect of the axial piperidine C(3,5) hydrogens that destabilize the competing bridged bicyclic transition state.
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Affiliation(s)
- Guoqiang Wang
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA
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23
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Bates RW, Lu Y. Synthesis of (−)-Sedinine by Allene Cyclization and Iminium Ion Chemistry. Org Lett 2010; 12:3938-41. [DOI: 10.1021/ol1016492] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Roderick W. Bates
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Yongna Lu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
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Regioselective synthesis of azetidines or pyrrolidines by selenium-induced cyclization of secondary homoallylic amines. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.06.087] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Rice GT, White MC. Allylic C-H amination for the preparation of syn-1,3-amino alcohol motifs. J Am Chem Soc 2009; 131:11707-11. [PMID: 19645489 DOI: 10.1021/ja9054959] [Citation(s) in RCA: 194] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly selective and general Pd/sulfoxide-catalyzed allylic C-H amination reaction en route to syn-1,3-amino alcohol motifs is reported. Key to achieving this reactivity under mild conditions is the use of electron-deficient N-nosyl carbamate nucleophiles that are thought to promote functionalization by furnishing higher concentrations of anionic species in situ. The reaction is shown to be orthogonal to classical C-C bond-forming/-reduction sequences as well as nitrene-based C-H amination methods.
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Affiliation(s)
- Grant T Rice
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, USA
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26
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Davies SG, Fletcher AM, Roberts PM, Smith AD. Asymmetric synthesis of Sedum alkaloids via lithium amide conjugate addition. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.09.104] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Enantiopure alkaloid analogues and iminosugars from proline derivatives: stereocontrol in sequential processes. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.04.082] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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28
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Enantiopure N-Boc piperidine-2-ethanol for the synthesis of (+)- and (−)-dumetorine, and (+)- and (−)-epidihydropinidine. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2008.12.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Chen LJ, Hou DR. Asymmetric aza-Michael addition: synthesis of (−)-allosedridine and (−)-2-epi-ethylnorlobelol. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.02.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Coldham I, Raimbault S, Chovatia PT, Patel JJ, Leonori D, Sheikh NS, Whittaker DTE. Dynamic resolution of N-Boc-2-lithiopiperidine. Chem Commun (Camb) 2008:4174-6. [DOI: 10.1039/b810988e] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Boto A, Hernández D, Hernández R, Montoya A, Suárez E. Synthesis of Alkaloid Analogues from β-Amino Alcohols by β-Fragmentation of Primary Alkoxyl Radicals. European J Org Chem 2007. [DOI: 10.1002/ejoc.200600720] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Kobayashi T, Hasegawa F, Tanaka K, Katsumura S. Synthesis of 2,4,6-Trisubstituted Chiral Piperidines and (−)-Dendroprimine by One-Pot Asymmetric Azaelectrocyclization Protocol. Org Lett 2006; 8:3813-6. [PMID: 16898824 DOI: 10.1021/ol0614065] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] Stereocontrolled synthesis of 2,4,6-trisubstituted piperidine diastereomers has been realized from common intermediates, obtained by a one-pot azaelectrocyclization protocol. Based on the method, the asymmetric synthesis of an indolizidine alkaloid, (-)-dendroprimine, was achieved.
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Affiliation(s)
- Toyoharu Kobayashi
- School of Science and Technology, Kwansei Gakuin University, Gakuen 2-1, Sanda, Hyogo 669-1337, Japan
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