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Bhat AH, Quiroga GN, La-Venia A, Grover HK, Riveira MJ. Biomimetic Domino Knoevenagel/Cycloisomerization Strategy for the Synthesis of Citridone A and Derivatives. J Org Chem 2021; 86:12226-12236. [PMID: 34410723 DOI: 10.1021/acs.joc.1c01542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Studies on Knoevenagel condensations between conjugated dienals and 4-hydroxy-2-pyridone/quinolone-type 1,3-dicarbonyl equivalents led to the development of a simple one-pot strategy to access citridone A and related synthetic cyclopenta[b]furopyridones/quinolones. The present work highlights the power of domino cascades in the synthesis of natural product frameworks and may help promote future studies on this promising new class of pyridone alkaloids.
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Affiliation(s)
- Aabid H Bhat
- Department of Chemistry, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X7, Canada
| | - Gastón N Quiroga
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK Rosario, Argentina
| | - Agustina La-Venia
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK Rosario, Argentina
| | - Huck K Grover
- Department of Chemistry, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X7, Canada
| | - Martín J Riveira
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK Rosario, Argentina
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Galisteo Pretel A, Pérez Del Pulgar H, Guerrero de León E, López-Pérez JL, Olmeda AS, Gonzalez-Coloma A, F Barrero A, Quílez Del Moral JF. Germacrone Derivatives as new Insecticidal and Acaricidal Compounds: A Structure-Activity Relationship. Molecules 2019; 24:molecules24162898. [PMID: 31404973 PMCID: PMC6720995 DOI: 10.3390/molecules24162898] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 07/30/2019] [Accepted: 08/02/2019] [Indexed: 11/16/2022] Open
Abstract
Currently, the use of synthetic pesticides is the main method of plant protection applied in agri- and horticulture. However, its excessive use leads to the development of pesticide resistance, a contamination of the environment, toxicity to non-target organisms, and risks for human health. With the ultimate aim of contributing to the develop of a more sustainable pest management, we used the natural product germacrone (compound 1), reported to possess significant insecticidal activity, as starting material for the generation of molecular diversity (2-24). Some of the generated derivatives are natural compounds, such as 1,10-epoxygermacrone (2), 4,5-epoxygermacrone (3), gajutsulactone A (7), germacrol (11), isogermacrone (14), 9-hydroxyeudesma-3,7(11)dien-6-one (19), eudesma-4,7(11),dien-8-one (20), eudesma-3,7(11)-dien-8-one (21) and eudesma-4(15),7(11)-dien-8-one (22). Compounds, 7,11-9,10-diepoxigermacr-4,5-en-8-ol (17), 7,11-epoxieudesma-4,7(11)-dien-8-one (23) and 7,11-epoxieudesma-3,7(11)-dien-8-one (24) are described for the first time. The biocidal activity of most of these compounds was assayed against the tick Hyalomma lusitanicum. The acaricidal effects of compound 24 were four times higher than that of germacrone (1). Compound 2 is an insect antifeedant a thousand times more potent than germacrone against Rhopalosiphum padi, which makes this substance a promising selective antifeedant against this cereal pest.
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Affiliation(s)
- Alberto Galisteo Pretel
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada, 18071 Granada, Spain
| | - Helena Pérez Del Pulgar
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada, 18071 Granada, Spain
| | | | - José Luis López-Pérez
- Department of Pharmacology, Faculty of Medicine, University of Panama, Panama 07156, Panama
- Department of Pharmaceutical Sciences, IBSAL-CIETUS, University of Salamanca, 37007 Salamanca, Spain
| | - A Sonia Olmeda
- Faculty of Veterinary, Complutense University of Madrid (UCM), 28040 Madrid, Spain
| | | | - Alejandro F Barrero
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada, 18071 Granada, Spain.
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Álvarez-Calero JM, Ruiz E, López-Pérez JL, Jaraíz M, Rubio JE, Jorge ZD, Suárez M, Massanet GM. 15-Hydroxygermacranolides as Sources of Structural Diversity: Synthesis of Sesquiterpene Lactones by Cyclization and Rearrangement Reactions. Experimental and DFT Study. J Org Chem 2018; 83:5480-5495. [PMID: 29694044 DOI: 10.1021/acs.joc.8b00407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A study on the electrophile-induced rearrangement of two 15-hydroxygermacranolides, salonitenolide and artemisiifolin, was carried out. These compounds underwent electrophilic intramolecular cyclizations or acid-mediated rearrangements to give sesquiterpene lactones with different skeletons such as eudesmanolides, guaianolides, amorphanolides, or other germacranolides. The cyclization that gives guaianolides can be considered a biomimetic route to this type of sesquiterpene lactones. The use of acetone as a solvent changes the reactivity of the two starting germacranolides to the acid catalysts, with a 4,15-diol acetonide being the main product obtained. The δ-amorphenolide obtained by intramolecular cyclization of this acetonide is a valuable intermediate for accessing the antimalarials artemisinin and its derivatives. Mechanistic proposals for the transformations are raised, and to provide support them, quantum chemical calculations [DFT B3LYP/6-31+G(d,p) level] were undertaken.
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Affiliation(s)
- José María Álvarez-Calero
- Departamento de Química Orgánica, Facultad de Ciencias , Universidad de Cádiz , Puerto Real, Cádiz 11510 , Spain
| | - Enrique Ruiz
- Departamento de Química, Instituto de Ciencias Básicas , Universidad Técnica de Manabí (UTM) , Avenida Urbina y Che Guevara , Portoviejo , Manabí 130103 , Ecuador.,Laboratorio de Síntesis Orgánica, Facultad de Química , Universidad de La Habana , La Habana 10400 , Cuba
| | - José Luis López-Pérez
- Departamento de Farmacología, Facultad de Medicina , Universidad de Panamá , Ciudad de Panamá 3366 , República de Panamá.,Departamento de Ciencias Farmacéuticas, IBSAL-CIETUS , Universidad de Salamanca , Avda. Campo Charro s/n , Salamanca 37007 , Spain
| | - Martín Jaraíz
- Departamento de Electrónica , Universidad de Valladolid , Paseo Belén 15 , Valladolid 47011 , Spain
| | - José E Rubio
- Departamento de Electrónica , Universidad de Valladolid , Paseo Belén 15 , Valladolid 47011 , Spain
| | - Zacarías D Jorge
- Departamento de Química Orgánica, Facultad de Ciencias , Universidad de Cádiz , Puerto Real, Cádiz 11510 , Spain
| | - Margarita Suárez
- Laboratorio de Síntesis Orgánica, Facultad de Química , Universidad de La Habana , La Habana 10400 , Cuba
| | - Guillermo M Massanet
- Departamento de Química Orgánica, Facultad de Ciencias , Universidad de Cádiz , Puerto Real, Cádiz 11510 , Spain
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Das A. Synthesis, X-ray crystallographic studies, DFT calculations and nanostructural features of annulated imidazo[4,5-b]pyridine derivatives. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1381882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Aniruddha Das
- University College of Science, Technology and Agriculture, University of Calcutta, Kolkata, India
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Das A. Studies on complex π-π and T-stacking features of imidazole and phenyl/p-halophenyl units in series of 5-amino-1-(phenyl/p-halophenyl)imidazole-4-carboxamides and their carbonitrile derivatives: Role of halogens in tuning of conformation. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.06.124] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Barquera-Lozada JE, Cuevas G. Are boat transition states likely to occur in Cope rearrangements? A DFT study of the biogenesis of germacranes. Beilstein J Org Chem 2017; 13:1969-1976. [PMID: 29062416 PMCID: PMC5629395 DOI: 10.3762/bjoc.13.192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 08/24/2017] [Indexed: 01/18/2023] Open
Abstract
It has been proposed that elemanes are biogenetically formed from germacranes by Cope sigmatropic rearrangements. Normally, this reaction proceeds through a transition state with a chair conformation. However, the transformation of schkuhriolide (germacrane) into elemanschkuhriolide (elemane) may occur through a boat transition state due to the final configuration of the elemanschkuhriolide, but this transition state is questionable due to its high energy. The possible mechanisms of this transformation were studied in the density functional theory frame. The mechanistic differences between the transformation of (Z,E)-germacranes and (E,E)-germacranes were also studied. We found that (Z,E)-germacranolides are significantly more stable than (E,E)-germacranolides and elemanolides. In the specific case of schkuhriolide, even when the boat transition state is not energetically favored, a previous hemiacetalization lowers enough the energetic barrier to allow the formation of a very stable elemanolide that is even more stable than its (Z,E)-germacrane.
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Affiliation(s)
- José Enrique Barquera-Lozada
- Instituto de Química, Universidad Nacional Autónoma de México, Apdo. Postal 70213, 04510, Coyoacán, Circuito Exterior, Ciudad de México, Mexico
| | - Gabriel Cuevas
- Instituto de Química, Universidad Nacional Autónoma de México, Apdo. Postal 70213, 04510, Coyoacán, Circuito Exterior, Ciudad de México, Mexico
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Posada-Salgado JA, Bautista E, Cuevas G, Martinez-Mayorga K. A theoretical biogenesis overview of diterpenes isolated from Salvia microphylla. J Mol Model 2015; 21:306. [PMID: 26556689 DOI: 10.1007/s00894-015-2841-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 10/16/2015] [Indexed: 11/28/2022]
Abstract
Establishing the reaction mechanisms involved in the biosynthesis of natural products plays an important role in phytochemistry and pharmacology. Mechanistic studies of the biogenesis of natural products have been mainly explored by means of theoretical calculations, and taking into account experimental structures of reagents and products. Using a hybrid meta density functional theory method (mPW1B95), we studied the mechanisms associated with the biogenesis of five neo-clerodanes isolated from Salvia mycrophylla. The reaction mechanisms presented here explain the formation of the five neo-clerodanes and coincides with the formulated biogenetic hypothesis. Graphical Abstract Proposed biogenesis of diterpenes isolated from Salvia microphylla.
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Affiliation(s)
| | - Elihú Bautista
- Instituto de Química, Universidad Nacional Autónoma de México, Mexico City, Mexico, 04510
| | - Gabriel Cuevas
- Instituto de Química, Universidad Nacional Autónoma de México, Mexico City, Mexico, 04510
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Lone SH, Bhat KA, Khuroo MA. Arglabin: From isolation to antitumor evaluation. Chem Biol Interact 2015; 240:180-98. [DOI: 10.1016/j.cbi.2015.08.015] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 08/05/2015] [Accepted: 08/25/2015] [Indexed: 01/03/2023]
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Ray S, Das A. Studies on the π–π stacking features of imidazole units present in a series of 5-amino-1-alkylimidazole-4-carboxamides. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.02.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Ghigo G, Maranzana A, Tonachini G. Memory effects in carbocation rearrangements: structural and dynamic study of the norborn-2-en-7-ylmethyl-X solvolysis case. J Org Chem 2013; 78:9041-50. [PMID: 23962127 DOI: 10.1021/jo401188e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The solvolysis of two diastereomers may give the same two products, but in different ratios, notwithstanding the fact that the two reaction pathways share an apparently identical intermediate carbocation. This has been dubbed the "memory effect", since the initial carbocation seems to "remember" its origin when undergoing further evolutions through multistep rearrangements. This puzzling result was studied theoretically for the case of the solvolysis of norborn-2-en-7-ylmethyl-X systems by defining the reaction potential energy surface (PES) and then carrying out a dynamical study. The PES shows that upon X(-) loss, multiphase rearrangements concertedly yield the two stablest carbocations, G and L. These carbocations are connected by a transition structure. The carbocation intermediates proposed in the literature do not correspond to any stationary point. The preference for the rearrangement to G or L (the memory effect) is determined by structural and stereoelectronic effects: the competitive interaction between an empty p orbital with a σ orbital or a p/π orbital is guided by geometrical aspects present in the starting carbocations. The dynamical study shows that (1) G and L do not interconvert and (2) the evolving system can switch from one pathway to the other to different extents, thus determining a more or less pronounced memory loss (the leakage).
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Affiliation(s)
- Giovanni Ghigo
- Dipartimento di Chimica, Università di Torino , V. Giuria 7, I-10125 Torino, Italy
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Valdez-Calderón A, Torres-Valencia JM, Manríquez-Torres JJ, Velázquez-Jiménez R, Román-Marín LU, Hernández-Hernández JD, Cerda-García-Rojas CM, Joseph-Nathan P. An unusual diepoxyguaianolide from Stevia tomentosa. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Serba C, Winssinger N. Following the Lead from Nature: Divergent Pathways in Natural Product Synthesis and Diversity-Oriented Synthesis. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300201] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Valot G, Garcia J, Duplan V, Serba C, Barluenga S, Winssinger N. Diversity-Oriented Synthesis of Diverse Polycyclic Scaffolds Inspired by the Logic of Sesquiterpene Lactones Biosynthesis. Angew Chem Int Ed Engl 2012; 51:5391-4. [DOI: 10.1002/anie.201201157] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Revised: 03/30/2012] [Indexed: 11/08/2022]
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Valot G, Garcia J, Duplan V, Serba C, Barluenga S, Winssinger N. Diversity-Oriented Synthesis of Diverse Polycyclic Scaffolds Inspired by the Logic of Sesquiterpene Lactones Biosynthesis. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201157] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Tantillo DJ. Biosynthesis via carbocations: theoretical studies on terpene formation. Nat Prod Rep 2011; 28:1035-53. [PMID: 21541432 DOI: 10.1039/c1np00006c] [Citation(s) in RCA: 281] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review describes applications of quantum chemical calculations in the field of terpene biosynthesis, with a focus on insights into the mechanisms of terpene-forming carbocation rearrangements arising from theoretical studies.
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Barquera-Lozada JE, Cuevas G. Role of Carbocation’s Flexibility in Sesquiterpene Biosynthesis: Computational Study of the Formation Mechanism of Terrecyclene. J Org Chem 2011; 76:1572-7. [DOI: 10.1021/jo101869z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- José E. Barquera-Lozada
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México D.F. 04510, Mexico
| | - Gabriel Cuevas
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México D.F. 04510, Mexico
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Barquera-Lozada JE, Quiroz-García B, Quijano L, Cuevas G. Conformational Properties of the Germacradienolide 6-Epidesacetyllaurenobiolide by Theory and NMR Analyses. J Org Chem 2010; 75:2139-46. [DOI: 10.1021/jo902170w] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- José E. Barquera-Lozada
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 México D.F., Mexico
| | - Beatriz Quiroz-García
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 México D.F., Mexico
| | - Leovigildo Quijano
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 México D.F., Mexico
| | - Gabriel Cuevas
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 México D.F., Mexico
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Kitson RRA, Millemaggi A, Taylor RJK. The renaissance of alpha-methylene-gamma-butyrolactones: new synthetic approaches. Angew Chem Int Ed Engl 2010; 48:9426-51. [PMID: 19938025 DOI: 10.1002/anie.200903108] [Citation(s) in RCA: 358] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The amount of research activity concerning alpha-methylene-gamma-butyrolactones and alpha-alkylidene-gamma-butyrolactones has increased dramatically in recent years. This Review summarizes the structural types, biological activities, and biosynthesis of these compounds, concentrating on publications from the past 10 years. Traditional approaches to alpha-methylene-gamma-butyrolactones and alpha-alkylidene-gamma-butyrolactones are then reviewed together with novel approaches, including those from our own research group, reported more recently.
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Affiliation(s)
- Russell R A Kitson
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
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Kitson R, Millemaggi A, Taylor R. Die Renaissance der α-Methylen-γ-butyrolactone: neue Syntheseansätze. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200903108] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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