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Chimaladenne V, Manda R, Gudipally AR, Valluru KR, Brahman PK, Somarapu VL. An efficient microwave accelerated three component reaction of phenacyl azides and pyridinium phenacyl salts: A facile greener approach to 2-amino-2-ene-1,4-diones/pyrrolidin-2-ones. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1787447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Venkateswarlu Chimaladenne
- Department of Chemistry, Koneru Laksmaiah Education Foundation, Green Fields, Vaddeswaram, Guntur, Andhra Pradesh, India
- Chemistry Services, GVK Biosciences Pvt. Ltd, IDA Mallapur, Hyderabad, India
| | - Ramesh Manda
- Chemistry Services, GVK Biosciences Pvt. Ltd, IDA Mallapur, Hyderabad, India
| | | | | | - Pradeep Kumar Brahman
- Department of Chemistry, Koneru Laksmaiah Education Foundation, Green Fields, Vaddeswaram, Guntur, Andhra Pradesh, India
| | - Vijaya Laxmi Somarapu
- Department of Chemistry, Koneru Laksmaiah Education Foundation, Green Fields, Vaddeswaram, Guntur, Andhra Pradesh, India
- Department of Chemistry, Palamuru University, Mahabubnagar, India
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2
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Mohajer F, Ziarani GM, Moradi R. The Study of Several Synthesis Methods of Indolizidine (±)-209I and (±)-209B as Natural Alkaloids. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200226113022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Natural products have received much attention due to their importance and
application. Indolizidine, categorized as an alkaloid, has several biological activities. The
synthesis of natural compounds such as indolizidines has attracted much attention from
many chemists’ and researchers’ perspectives. There are many areas to be explored in
this subject; that is why synthesizing indolizidine 209I and (±)-indolizidine 209B as
natural compounds have received much consideration. This review discloses the procedures
and methodology to provide (±)-indolizidine 209I and 209B due to the importance
of indolizidines.
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Affiliation(s)
| | | | - Razieh Moradi
- Department of Chemistry, Alzahra University, Tehran, Iran
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3
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Klintworth R, de Koning CB, Michael JP. Demethylative Lactonization Provides a Shortcut to High-Yielding Syntheses of Lamellarins. J Org Chem 2019; 85:1054-1061. [PMID: 31840515 DOI: 10.1021/acs.joc.9b02983] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Modular gram-scale syntheses of the trimethyl ethers of lamellarins G (6) and D (7) were achieved from readily accessible precursors in the highest overall yields reported to date (6, six steps, 82%; 7, seven steps, 86%). A novel demethylative lactonization between an aryl methyl ether and a neighboring carboxylic acid was developed for creating the chromenone unit of the targets to avoid the need for additional protection and deprotection steps. The central pyrrole core was constructed in a late-stage [4 + 1] condensation between ethyl bromoacetate and an enaminone possessing the remaining components of the lamellarin skeleton. Exhaustive demethylation of both permethyl ethers 6 and 7 gave the polyphenolic natural lamellarins A4 (3) and H (5), respectively.
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Affiliation(s)
- Robin Klintworth
- 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
| | - Joseph P Michael
- Molecular Sciences Institute, School of Chemistry , University of the Witwatersrand , Wits 2050 , Johannesburg , South Africa
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4
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Morgans GL, Fernandes MA, van Otterlo WAL, Michael JP. Base-Mediated Cyclization of 3-[2-(2-Oxo-2-phenylethyl)-1-pyrrolidinyl]propanenitrile to 7-Phenyl-1,2,3,7,8,8a-hexahydroindolizine-6-carbonitrile: What Lies Between? European J Org Chem 2018. [DOI: 10.1002/ejoc.201701714] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Garreth L. Morgans
- Molecular Science Institute; School of Chemistry; University of the Witwatersrand; PO Wits 2050 Johannesburg South Africa
| | - Manuel A. Fernandes
- Molecular Science Institute; School of Chemistry; University of the Witwatersrand; PO Wits 2050 Johannesburg South Africa
| | - Willem A. L. van Otterlo
- Molecular Science Institute; School of Chemistry; University of the Witwatersrand; PO Wits 2050 Johannesburg South Africa
- Department of Chemistry and Polymer Science; School of Chemistry; Stellenbosch University; 7602 Stellenbosch Matieland South Africa
| | - Joseph P. Michael
- Molecular Science Institute; School of Chemistry; University of the Witwatersrand; PO Wits 2050 Johannesburg South Africa
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Pal A, Koduri ND, Wang Z, Quiroz EL, Chong A, Vuong M, Rajagopal N, Nguyen M, Roberts KP, Hussaini SR. Copper-catalyzed chemoselective cross-coupling reaction of thioamides and α-diazocarbonyl compounds: Synthesis of enaminones. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.01.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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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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Chattopadhyay AK, Hanessian S. Cyclic enaminones. Part II: applications as versatile intermediates in alkaloid synthesis. Chem Commun (Camb) 2016; 51:16450-67. [PMID: 26490499 DOI: 10.1039/c5cc05892a] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Among many other strategies, the enaminone approach is an important strategy to construct and diversify the azacyclic core in various alkaloids syntheses. In this brief review we discuss the application of cyclic enaminones as building blocks, as well as potential intermediates in the total synthesis of selected alkaloids.
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Affiliation(s)
- Amit Kumar Chattopadhyay
- Department of Chemistry, Université de Montréal, Station Centre Ville, C. P. 6128, Montréal, Qc H3C 3J7, Canada.
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal, Station Centre Ville, C. P. 6128, Montréal, Qc H3C 3J7, Canada.
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Hussaini SR, Chamala RR, Wang Z. The Eschenmoser sulfide contraction method and its application in the synthesis of natural products. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.06.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Dawood KM, Sayed SM. Synthesis and Reactivity of Enaminones: A Facile Synthesis of Thiophene and 1,3,4-Thiadiazole Derivatives Incorporating a Thiazole Moiety. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2512] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kamal M. Dawood
- Department of Chemistry, Faculty of Science; Cairo University; Giza Egypt
| | - Samia M. Sayed
- Department of Chemistry, Faculty of Science; Aswan University; 81528 Aswan Egypt
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Abstract
This review of simple indolizidine and quinolizidine alkaloids (i.e., those in which the parent bicyclic systems are in general not embedded in polycyclic arrays) is an update of the previous coverage in Volume 55 of this series (2001). The present survey covers the literature from mid-1999 to the end of 2013; and in addition to aspects of the isolation, characterization, and biological activity of the alkaloids, much emphasis is placed on their total synthesis. A brief introduction to the topic is followed by an overview of relevant alkaloids from fungal and microbial sources, among them slaframine, cyclizidine, Steptomyces metabolites, and the pantocins. The important iminosugar alkaloids lentiginosine, steviamine, swainsonine, castanospermine, and related hydroxyindolizidines are dealt with in the subsequent section. The fourth and fifth sections cover metabolites from terrestrial plants. Pertinent plant alkaloids bearing alkyl, functionalized alkyl or alkenyl substituents include dendroprimine, anibamine, simple alkaloids belonging to the genera Prosopis, Elaeocarpus, Lycopodium, and Poranthera, and bicyclic alkaloids of the lupin family. Plant alkaloids bearing aryl or heteroaryl substituents include ipalbidine and analogs, secophenanthroindolizidine and secophenanthroquinolizidine alkaloids (among them septicine, julandine, and analogs), ficuseptine, lasubines, and other simple quinolizidines of the Lythraceae, the simple furyl-substituted Nuphar alkaloids, and a mixed quinolizidine-quinazoline alkaloid. The penultimate section of the review deals with the sizable group of simple indolizidine and quinolizidine alkaloids isolated from, or detected in, ants, mites, and terrestrial amphibians, and includes an overview of the "dietary hypothesis" for the origin of the amphibian metabolites. The final section surveys relevant alkaloids from marine sources, and includes clathryimines and analogs, stellettamides, the clavepictines and pictamine, and bis(quinolizidine) alkaloids.
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Lei BL, Zhang QS, Yu WH, Ding QP, Ding CH, Hou XL. Kinetic Resolution of 2-Substituted 2,3-Dihydro-4-pyridones by Palladium-Catalyzed Asymmetric Allylic Alkylation: Catalytic Asymmetric Total Synthesis of Indolizidine (−)-209I. Org Lett 2014; 16:1944-7. [DOI: 10.1021/ol500498m] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | | | - Wei-Hua Yu
- College
of Chemistry and Chemical Engineering, Jiangxi Normal University, 99
Ziyang Road, Nanchang 330022, China
| | - Qiu-Ping Ding
- College
of Chemistry and Chemical Engineering, Jiangxi Normal University, 99
Ziyang Road, Nanchang 330022, China
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The conjugate addition of enantiomerically pure lithium amides as chiral ammonia equivalents part II: 2005−2011. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.08.009] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Wong H, Garnier-Amblard EC, Liebeskind LS. Organometallic enantiomeric scaffolding: a strategy for the enantiocontrolled construction of regio- and stereodivergent trisubstituted piperidines from a common precursor. J Am Chem Soc 2011; 133:7517-27. [PMID: 21513336 PMCID: PMC3107969 DOI: 10.1021/ja201012p] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Reported herein is a general and efficient method to construct 2,3,6-trisubstituted piperidines in a substituent-independent fashion. From the high enantiopurity organometallic scaffold (-)-Tp(CO)(2)[(η-2,3,4)-(1S,2S)-1-benzyloxycarbonyl-5-oxo-5,6-dihydro-2H-pyridin-2-yl)molybdenum (Tp = hydridotrispyrazolylborato), a variety of TpMo(CO)(2)-based 2,3,6-trifunctionalized complexes of the (η-3,4,5-dihydropyridinyl) ligand were easily obtained in 5 steps through a sequence of highly regio- and stereospecific metal-influenced transformations (15 examples). From the 2,3,6-trifunctionalized molybdenum complexes, either 2,6-cis-3-trans or 2,3,6-cis systems were selectively obtained through the choice of an appropriate stereodivergent demetalation protocol. The potential of this strategy in synthetic chemistry was demonstrated by the short total synthesis of four natural and one non-natural alkaloids: indolizidines (±)-209I and (±)-8-epi-219F in the racemic series, and enantiocontrolled syntheses of (-)-indolizidine 251N, (-)-quinolizidine 251AA, and (-)-dehydroindolizidine 233E.
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Affiliation(s)
| | | | - Lanny S. Liebeskind
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia, 30322
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Lemonnier G, Charette AB. Stereoselective Synthesis of 2,3,6-Trisubstituted Tetrahydropyridines via Tf2O-Mediated Grob Fragmentation: Access to Indolizidines (−)-209I and (−)-223J. J Org Chem 2010; 75:7465-7. [DOI: 10.1021/jo1015344] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gérald Lemonnier
- Département de Chimie, Université de Montréal, P.O. Box 6128, Station Downtown, Montréal, Québec, Canada H3C 3J7
| | - André B. Charette
- Département de Chimie, Université de Montréal, P.O. Box 6128, Station Downtown, Montréal, Québec, Canada H3C 3J7
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Enaminones in heterocyclic synthesis: a novel route to tetrahydropyrimidines, dihydropyridines, triacylbenzenes and naphthofurans under microwave irradiation. Molecules 2009; 15:58-67. [PMID: 20110871 PMCID: PMC6257121 DOI: 10.3390/molecules15010058] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2009] [Revised: 12/18/2009] [Accepted: 12/23/2009] [Indexed: 11/29/2022] Open
Abstract
Condensation of phthalimidoacetone (1) with DMFDMA (N,N-Dimethylformamide dimethyl acetal) has afforded enaminone 2. Refluxing 2 with equimolecular amounts of benzaldehyde and urea in acetic acid afforded a mixture of tetrahydropyrimidine 5 and the dihydropyridine 6. Compound 2 undergoes self-condensation on heating in acetic acid or under microwave irradiation in presence of acidic zeolite to give 1,3,5-triacylbenzene 9. Reacting enaminone 11a with naphthoquinone 15 afforded the naphthofuran 18. The possible formation of the aldehyde 19 was excluded based on an HMQC experiment, which revealed that the carbonyl carbon is not linked to any hydrogen.
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