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Garay-Talero A, Goulart TAC, Gallo RDC, Pinheiro RDC, Hoyos-Orozco C, Jurberg ID, Gamba-Sánchez D. An aza-Robinson Annulation Strategy for the Synthesis of Fused Bicyclic Amides: Synthesis of (±)-Coniceine and Quinolizidine. Org Lett 2023; 25:7940-7945. [PMID: 37877616 PMCID: PMC10630962 DOI: 10.1021/acs.orglett.3c02798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Indexed: 10/26/2023]
Abstract
An aza-Robinson annulation strategy is described using a NaOEt-catalyzed conjugate addition of cyclic imides onto vinyl ketones, followed by a TfOH-mediated intramolecular aldol condensation to afford densely functionalized fused bicyclic amides. The potential use of these amides in the synthesis of alkaloids is demonstrated by the sequential conversion of appropriate precursors to (±)-coniceine and quinolizidine in two additional steps, thus allowing their preparation in overall 40 and 44% yields, respectively.
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Affiliation(s)
- Alexander Garay-Talero
- Laboratory
of Organic Synthesis, Bio and Organocatalysis, Chemistry Department, Universidad de los Andes, Cra 1 No. 18A-12 Q:305, 111711 Bogota, Colombia
| | - Tales A. C. Goulart
- Institute
of Chemistry, State University of Campinas, Rua Monteiro Lobato 270, 13083-862 Campinas, SP, Brazil
| | - Rafael D. C. Gallo
- Institute
of Chemistry, State University of Campinas, Rua Monteiro Lobato 270, 13083-862 Campinas, SP, Brazil
| | - Roberto do C. Pinheiro
- Institute
of Chemistry, State University of Campinas, Rua Monteiro Lobato 270, 13083-862 Campinas, SP, Brazil
| | - Catalina Hoyos-Orozco
- Laboratory
of Organic Synthesis, Bio and Organocatalysis, Chemistry Department, Universidad de los Andes, Cra 1 No. 18A-12 Q:305, 111711 Bogota, Colombia
| | - Igor D. Jurberg
- Institute
of Chemistry, State University of Campinas, Rua Monteiro Lobato 270, 13083-862 Campinas, SP, Brazil
| | - Diego Gamba-Sánchez
- Laboratory
of Organic Synthesis, Bio and Organocatalysis, Chemistry Department, Universidad de los Andes, Cra 1 No. 18A-12 Q:305, 111711 Bogota, Colombia
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2
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Sarkale AM, Appayee C. Stereodivergent Synthesis of 1-Hydroxymethylpyrrolizidine Alkaloids. Org Lett 2020; 22:4355-4359. [PMID: 32459490 DOI: 10.1021/acs.orglett.0c01375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A first stereodivergent strategy for the asymmetric synthesis of all stereoisomers of 1-hydroxymethylpyrrolizidine alkaloids is developed using an asymmetric self-Mannich reaction as a key step. An anti-selective self-Mannich reaction of methyl 4-oxobutanoate with the PMP-amine catalyzed by a chiral secondary amine is successfully optimized for the asymmetric synthesis of (+)-isoretronecanol and (-)-isoretronecanol. A syn-selective self-Mannich reaction catalyzed by proline is utilized for the asymmetric synthesis of the diastereomer, (+)-laburnine, and its enantiomer, (-)-trachelanthamidine.
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Affiliation(s)
- Abhijeet M Sarkale
- Discipline of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382355, India
| | - Chandrakumar Appayee
- Discipline of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382355, India
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3
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Shimomura M, Sato M, Azuma H, Sakata J, Tokuyama H. Total Synthesis of (-)-Lepadiformine A via Radical Translocation-Cyclization Reaction. Org Lett 2020; 22:3313-3317. [PMID: 32182082 DOI: 10.1021/acs.orglett.0c00474] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Total synthesis of (-)-lepadiformine A featuring construction of the 1-azaspiro[4.5]decane skeleton by a highly diastereoselective radical translocation-cyclization reaction of a γ-lactam derivative bearing a chiral butenolide moiety is described. The enantioselective construction of butenolide is conducted via Krische's catalytic asymmetric allylation protocol. After the radical translocation-cyclization reaction, a hydroxymethyl group at the C-13 position was stereoselectively introduced by a one-pot partial reduction-allylation protocol of the unprotected lactam derivative. Finally, the total synthesis is completed by formation of a C ring.
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Affiliation(s)
- Masashi Shimomura
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Manabu Sato
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Hiroki Azuma
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Juri Sakata
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Hidetoshi Tokuyama
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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Quevedo-Acosta Y, Jurberg ID, Gamba-Sánchez D. Activating Imides with Triflic Acid: A General Intramolecular Aldol Condensation Strategy Toward Indolizidine, Quinolizidine, and Valmerin Alkaloids. Org Lett 2020; 22:239-243. [PMID: 31845813 DOI: 10.1021/acs.orglett.9b04199] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A simple, inexpensive, step economic, and highly modular synthetic strategy to access izidine alkaloids is described. The key step is a TfOH-promoted intramolecular aldol condensation between enol and cyclic imide moieties. This cyclization strategy can be employed within an aza-Robinson annulation framework and represents a general tool to build fused bicyclic amines. To illustrate the power of this method, we describe the preparation of (±)-coniceine, (±)-quinolizidine, (±)-tashiromine, (±)-epilupinine, and the core of (±)-valmerins.
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Affiliation(s)
- Yovanny Quevedo-Acosta
- Institute of Chemistry , State University of Campinas , Rua Monteiro Lobato 270 , 13083-862 Campinas , São Paulo , Brazil
- Laboratory of Organic Synthesis, Bio and Organocatalysis, Chemistry Department , Universidad de los Andes , Cra 1 No. 18A-12 Q:305 , 111711 Bogotá , Colombia
| | - Igor D Jurberg
- Institute of Chemistry , State University of Campinas , Rua Monteiro Lobato 270 , 13083-862 Campinas , São Paulo , Brazil
| | - Diego Gamba-Sánchez
- Laboratory of Organic Synthesis, Bio and Organocatalysis, Chemistry Department , Universidad de los Andes , Cra 1 No. 18A-12 Q:305 , 111711 Bogotá , Colombia
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5
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Davies SG, Fletcher AM, Peters ME, Roberts PM, Thomson JE. The asymmetric synthesis of (S,S)-methylphenidate hydrochloride via ring-opening of an enantiopure aziridinium intermediate with phenylmagnesium bromide. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Gill DM, Iveson M, Collins I, Jones AM. A Mitsunobu reaction to functionalized cyclic and bicyclic N-arylamines. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Affiliation(s)
- Toshimune Nomura
- Graduate School of Pharmaceutical
Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Satoshi Yokoshima
- Graduate School of Pharmaceutical
Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical
Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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Davies SG, Fletcher AM, Roberts PM, Thomson JE. The conjugate addition of enantiomerically pure lithium amides as chiral ammonia equivalents part III: 2012–2017. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.tetasy.2017.10.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Zheng Y, Wang J, Xia PJ, Zhao QL, Xiao JA, Xiang HY, Chen XQ, Yang H. Organocatalytic Asymmetric Allylic Alkylation of Morita-Baylis-Hillman Carbonates with Diethyl 2-Aminomalonate Assisted by In Situ Protection. J Org Chem 2017; 82:12202-12208. [PMID: 29090919 DOI: 10.1021/acs.joc.7b02064] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
With the aid of in situ protection by N-(2-formylphenyl)-4-methyl-benzenesulfonamide, enantioselective allylic alkylation of Morita-Baylis-Hillman carbonates with diethyl 2-aminomalonate was successfully realized. The corresponding adducts can be obtained in up to 99% yield with up to 98% ee as well as excellent regioselectivity. Besides, the adducts with opposite configurations were readily prepared by utilizing easily available and inexpensive quinine or quinidine as organocatalyst. Facile deprotection of the resulting adduct provides straightforward access to enantiopure α-methylene-γ-lactam.
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Affiliation(s)
- Yu Zheng
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Jing Wang
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Peng-Ju Xia
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Qing-Lan Zhao
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Jun-An Xiao
- College of Chemistry and Materials Science, Guangxi Teachers Education University , Nanning, Guangxi 530001, People's Republic of China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Xiao-Qing Chen
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
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Robertson J, Stevens K. Pyrrolizidine alkaloids: occurrence, biology, and chemical synthesis. Nat Prod Rep 2017; 34:62-89. [PMID: 27782262 DOI: 10.1039/c5np00076a] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Covering: 2013 up to the end of 2015This review covers the isolation and structure of new pyrrolizidines; pyrrolizidine biosynthesis; biological activity, including the occurrence of pyrrolizidines as toxic components or contaminants in foods and beverages; and formal and total syntheses of naturally-occurring pyrrolizidine alkaloids and closely related non-natural analogues.
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Affiliation(s)
- Jeremy Robertson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK.
| | - Kiri Stevens
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK.
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12
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Riley DL, Michael JP, de Koning CB. New syntheses of (±)-tashiromine and (±)-epitashiromine via enaminone intermediates. Beilstein J Org Chem 2016; 12:2609-2613. [PMID: 28144330 PMCID: PMC5238587 DOI: 10.3762/bjoc.12.256] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 11/11/2016] [Indexed: 01/23/2023] Open
Abstract
The syntheses of the naturally occurring indolizidine alkaloid (±)-tashiromine and its unnatural epimer (±)-epitashiromine are demonstrated through the use of enaminone chemistry. The impact of various electron-withdrawing substituents at the C-8 position of the indolizidine core on the preparation of the bicyclic system is described.
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Affiliation(s)
- Darren L Riley
- Department of Chemistry, University of Pretoria, Pretoria 0028, South Africa
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Wits 2050, Johannesburg, South Africa
| | - Joseph P Michael
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Wits 2050, Johannesburg, South Africa
| | - Charles B de Koning
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Wits 2050, Johannesburg, South Africa
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Martinez ST, Belouezzane C, Pinto AC, Glasnov T. Synthetic Strategies towards the Azabicyclo[3.3.0]-Octane Core of Natural Pyrrolizidine Alkaloids. An Overview. ORG PREP PROCED INT 2016. [DOI: 10.1080/00304948.2016.1165058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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15
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Short and stereodivergent syntheses of (−)-5-epi-tashiromine and (−)-tashiromine and the formal synthesis of (−)-isoretronecanol and (−)-trachelanthamidine. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.05.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Kiss L, Forró E, Fülöp F. Novel stereocontrolled syntheses of tashiromine and epitashiromine. Beilstein J Org Chem 2015; 11:596-603. [PMID: 26124861 PMCID: PMC4464356 DOI: 10.3762/bjoc.11.66] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 04/13/2015] [Indexed: 12/14/2022] Open
Abstract
A novel stereocontrolled approach has been developed for the syntheses of tashiromine and epitashiromine alkaloids from cyclooctene β-amino acids. The synthetic concept is based on the azetidinone opening of a bicyclic β-lactam, followed by oxidative ring opening through ring C-C double bond and reductive ring-closure reactions of the cis- or trans-cyclooctene β-amino acids.
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Affiliation(s)
- Loránd Kiss
- Institute of Pharmaceutical Chemistry, University of Szeged, H-6720 Szeged, Eötvös u. 6, Hungary
| | - Enikő Forró
- Institute of Pharmaceutical Chemistry, University of Szeged, H-6720 Szeged, Eötvös u. 6, Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry, University of Szeged, H-6720 Szeged, Eötvös u. 6, Hungary ; Stereochemistry Research Group of the Hungarian Academy of Sciences, University of Szeged, H-6720 Szeged, Eötvös u. 6, Hungary
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