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Cocco A, Rubanu MG, Sechi ML, Frongia A, Mastrorilli P, Degennaro L, Colella M, Luisi R, Secci F. Lithiated three-membered heterocycles as chiral nucleophiles in the enantioselective synthesis of 1-oxaspiro[2,3]hexanes. Org Biomol Chem 2021; 19:1945-1949. [PMID: 33595577 DOI: 10.1039/d0ob00771d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction between configurably stable α-lithiated oxiranes and 3-substituted cyclobutanones allows obtaining enantiomerically enriched cyclobutanols (er > 98 : 2). These adducts, subjected to base-mediated Payne rearrangement, lead to the synthesis of a new class of oxaspirohexanes, useful precursors of 2,4-disubstituted cyclopentanones.
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Affiliation(s)
- Andrea Cocco
- Dipartimento di Scienze Chimiche e Geologiche, Università degli studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy.
| | - Maria Grazia Rubanu
- Dipartimento di Scienze Chimiche e Geologiche, Università degli studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy.
| | - Maria Laura Sechi
- Dipartimento di Scienze Chimiche e Geologiche, Università degli studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy.
| | - Angelo Frongia
- Dipartimento di Scienze Chimiche e Geologiche, Università degli studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy.
| | - Pietro Mastrorilli
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari, Aldo Moro, Via Edoardo Orabona 4, Bari I-70125, Italy
| | - Leonardo Degennaro
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari, Aldo Moro, Via Edoardo Orabona 4, Bari I-70125, Italy
| | - Marco Colella
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari, Aldo Moro, Via Edoardo Orabona 4, Bari I-70125, Italy
| | - Renzo Luisi
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari, Aldo Moro, Via Edoardo Orabona 4, Bari I-70125, Italy
| | - Francesco Secci
- Dipartimento di Scienze Chimiche e Geologiche, Università degli studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy.
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2
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Aitken DJ, Frongia A, Secci F. Discoveries through Organocatalyzed, Brønsted Acid Catalyzed and Non-Catalyzed Transformations of 2-Hydroxycyclobutanone. VIETNAM JOURNAL OF CHEMISTRY 2020. [DOI: 10.1002/vjch.201900176] [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]
Affiliation(s)
- David J. Aitken
- CP3A Organic Synthesis Group, ICMMO, CNRS UMR 8182, Université Paris Sud, Université Paris Saclay; 15 rue Georges Clemenceau 91405 Orsay Cedex France
| | - Angelo Frongia
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Complesso Universitario di Monserrato; S.S. 554, Bivio per Sestu, I-09042 Monserrato Cagliari Italy
| | - Francesco Secci
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Complesso Universitario di Monserrato; S.S. 554, Bivio per Sestu, I-09042 Monserrato Cagliari Italy
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3
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Tao L, Shi M. (CH 3) 2CuLi/Cu(OTf) 2 Mediated N- or O-Cyclization of Urea-Tethered Cyclobuta[ b]indolines. Org Lett 2019; 21:129-133. [PMID: 30571130 DOI: 10.1021/acs.orglett.8b03565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A (CH3)2CuLi/Cu(OTf)2 mediated N- or O-cyclization of urea-tethered cyclobuta[ b]indolines has been reported in this paper, giving a new synthetic protocol for the construction of pyrimido[1,6- a]indolone and cyclic imidate derivatives in moderate to good yields with a broad substrate scope under mild conditions. A plausible reaction mechanism has been also proposed on the basis of previous reports and the control experiments.
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Affiliation(s)
- Leyi Tao
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
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Jeedimalla N, Jacquet C, Bahneva D, Youte Tendoung JJ, Roche SP. Synthesis of α-Arylated Cycloalkanones from Congested Trisubstituted Spiro-epoxides: Application of the House–Meinwald Rearrangement for Ring Expansion. J Org Chem 2018; 83:12357-12373. [DOI: 10.1021/acs.joc.8b01448] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nagalakshmi Jeedimalla
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, United States
| | - Camille Jacquet
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, United States
| | - Diana Bahneva
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, United States
| | - Jean-Jacques Youte Tendoung
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, United States
| | - Stéphane P. Roche
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, United States
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Martis A, Luridiana A, Frongia A, Arca M, Sarais G, Aitken DJ, Guillot R, Secci F. Acid-catalyzed reaction of 2-hydroxycyclobutanone with benzylic alcohols. Org Biomol Chem 2017; 15:10053-10063. [PMID: 29165478 DOI: 10.1039/c7ob02545a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The acid-promoted syntheses of 2-(benzyloxy)cyclobutanones and bis(benzyloxy)dioxatricyclo decanes were achieved starting from 2-hydroxycyclobutanone and variously functionalized benzyl alcohols. The reaction sequences afforded the desired products in good to high yields and in a solvent-dependent chemoselective fashion.
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Affiliation(s)
- Alberto Martis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Complesso universitario di Monserrato, S.S. 554, bivio per Sestu, Monserrato (Ca), Italy.
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Luridiana A, Frongia A, Aitken DJ, Guillot R, Sarais G, Secci F. Deracemizing organocatalyzed Michael addition reactions of 2-(arylthio)cyclobutanones with β-nitrostyrenes. Org Biomol Chem 2016; 14:3394-403. [PMID: 26947186 DOI: 10.1039/c6ob00160b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organocatalyzed Michael addition reactions of 2-(arylthio)cyclobutanones with trans-β-nitrostyrenes have been carried out using a bifunctional thiourea-primary amine catalyst, providing diastereoisomerically and enantiomerically enriched 2-alkyl-2-(arylthio)cyclobutanones having two contiguous stereocenters of which one is a chiral quaternary center. The absolute configuration of these novel adducts was assigned by X-ray diffraction analysis and a transition-state model is proposed to explain the observed stereoselectivities.
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Affiliation(s)
- Alberto Luridiana
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Complesso Universitario di Monserrato, Monserrato (Ca), Italy.
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Melis N, Secci F, Boddaert T, Aitken DJ, Frongia A. Synthesis of functionalized tryptamines by Brønsted acid catalysed cascade reactions. Chem Commun (Camb) 2015; 51:15272-5. [DOI: 10.1039/c5cc06855j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new solvent-free Brønsted acid catalysed cascade reaction has been established, allowing access to highly substituted tryptamines under mild conditions.
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Affiliation(s)
- Nicola Melis
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli studi di Cagliari
- Complesso Universitario di Monserrato
- Cagliari
- Italy
| | - Francesco Secci
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli studi di Cagliari
- Complesso Universitario di Monserrato
- Cagliari
- Italy
| | - Thomas Boddaert
- CP3A Organic Synthesis Group
- ICMMO – CNRS UMR 8182
- Université Paris Sud
- 91405 Orsay cedex
- France
| | - David J. Aitken
- CP3A Organic Synthesis Group
- ICMMO – CNRS UMR 8182
- Université Paris Sud
- 91405 Orsay cedex
- France
| | - Angelo Frongia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli studi di Cagliari
- Complesso Universitario di Monserrato
- Cagliari
- Italy
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Sollai G, Murgia S, Secci F, Frongia A, Cerboneschi A, Masala C, Liscia A, Crnjar R, Solari P. A pheromone analogue affects the evaporation rate of (+)-disparlure in Lymantria dispar. PEST MANAGEMENT SCIENCE 2014; 70:674-681. [PMID: 23868283 DOI: 10.1002/ps.3609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 07/08/2013] [Accepted: 07/18/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND The gypsy moth Lymantria dispar L. is a widespread pest that causes economic damage to cork oak forests. Females produce the sex pheromone (+)-(7R,8S)-epoxy-2-methyloctadecane, known as (+)-disparlure [(+)D], for long-distance attraction of conspecific males. A (+)D analogue, 2-decyl-1-oxaspiro[2.2]pentane (OXP-01), neither stimulating nor attractive by itself, causes short-time inhibition of male response in a 1:1 blend with (+)D. The authors investigated whether and how the biological activity of the natural pheromone is affected by OXP-01 on a long-time basis (up to 16 days), also by looking at possible physicochemical reciprocal interactions. RESULTS Blending of (+)D with OXP-01 decreased, under low evaporation rate, the pheromone effectiveness, as assessed by electroantennogram recordings. In male trappings, within the first 24 h, OXP-01 decreased and later enhanced the blend attractiveness, but only under high evaporation rate. Gas chromatography-mass spectroscopy indicates that quantitative retrieval of (+)D from blend cartridges is higher than for pure pheromone, and nuclear magnetic resonance measurements show that OXP-01 produces, possibly by Van der Waals interactions, a bimolecular entity with pheromone causing retention and lengthening of its attractiveness over time. CONCLUSION The biological and physicochemical interactions between (+)D and OXP-01 may provide valuable information for the optimisation of pheromone-based control strategies for gypsy moths.
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Affiliation(s)
- Giorgia Sollai
- Department of Biomedical Sciences, Section of Physiology, University of Cagliari, Monserrato, Cagliari, Italy
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Leemans E, D’hooghe M, De Kimpe N. Ring Expansion of Cyclobutylmethylcarbenium Ions to Cyclopentane or Cyclopentene Derivatives and Metal-Promoted Analogous Rearrangements. Chem Rev 2011; 111:3268-333. [DOI: 10.1021/cr100295j] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Erika Leemans
- Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Matthias D’hooghe
- Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Norbert De Kimpe
- Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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Luján-Montelongo JA, Ávila-Zárraga JG. Palladium (II) catalyzed 5-endo epoxynitrile cyclizations: total syntheses of enokipodins A and B. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.02.072] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Audran G, Pellissier H. Synthesis of Methylene- and Alkylidenecyclopropane Derivatives. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900872] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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12
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Solari P, Crnjar R, Frongia A, Sollai G, Secci F, Spiga M, Masala C, Liscia A. Oxaspiropentane Derivatives as Effective Sex Pheromone Analogues in the Gypsy Moth: Electrophysiological and Behavioral Evidence. Chem Senses 2007; 32:755-63. [PMID: 17630413 DOI: 10.1093/chemse/bjm043] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
A number of oxaspiropentane derivatives (OXPs) were tested as potential (+)-disparlure analogues, with the aim of identifying any possible interaction of these compounds, be it additive, synergetic, or inhibitory, with the pheromone response in the male gypsy moth Lymantria dispar. As assessed by male electroantennograms, 2 OXPs, 2-decyl-1-oxaspiro[2.2]pentane (OXP-01) and 4-(1-oxaspiro[2.2]pent-2-yl)butan-1-ol (OXP-04), were found to be effective. OXP-01 had no stimulatory effect but strongly decreased the response to (+)-disparlure in a blend in a 1:1 ratio. By contrast, OXP-04 proved to be more stimulating than (+)-disparlure and also had an additive effect in the blend. Single-cell recordings from the sensilla trichoidea showed the activity of 2 cells, one of which responded to (+)-disparlure. OXP-01 reduced the stimulating effectiveness of pheromone by silencing the pheromone-responding unit when the 2 compounds were presented in blend, whereas OXP-04 mimicked the pheromone response, evidenced by exciting the pheromone-responding neuron when tested alone. Behavioral observations are in agreement with electrophysiological results.
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Affiliation(s)
- Paolo Solari
- Department of Experimental Biology, Section of General Physiology, University of Cagliari, Cittadella Universitaria, SS 554 Km 4.5, Monserrato, Cagliari 09042, Italy
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Facile Synthesis of 4-Substituted 3-Exo-methylenechroman Derivatives via Radical Cyclization Starting from Salicylaldehydes. B KOREAN CHEM SOC 2007. [DOI: 10.5012/bkcs.2007.28.4.624] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Bernard AM, Frongia A, Piras PP, Secci F, Spiga M. Regioselective Synthesis of Trisubstituted 2,3-Dihydrofurans from Donor−Acceptor Cyclopropanes or from Reaction of the Corey Ylide with α-Sulfenyl-, α-Sulfinyl-, or α-Sulfonylenones. Org Lett 2005; 7:4565-8. [PMID: 16209480 DOI: 10.1021/ol0514606] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reactions: see text] Regioselective synthesis of 2,4,5- or 3,4,5-trisubstituted 2,3-dihydrofurans has been realized by using donor-acceptor cyclopropanes or by a Corey ylide reaction with alpha-sulfenyl-, alpha-sulfinyl-, or alpha-sulfonylenones. The method allowed a straightforward synthesis of the natural product calyxolane B.
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Affiliation(s)
- Angela M Bernard
- Dipartimento di Scienze Chimiche, Università degli studi di Cagliari, Cittadella Universitaria di Monserrato, S.S 554, Bivio per Sestu, I-09042 Monserrato (Cagliari), Italy
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15
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Six-membered ring systems: with O and/or S atoms. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0959-6380(05)80337-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Bernard AM, Frongia A, Secci F, Piras PP. 2,2-Dimethyl cyclopentanones by acid catalyzed ring expansion of isopropenylcyclobutanols. A short synthesis of (±)-α-cuparenone and (±)-herbertene. Chem Commun (Camb) 2005:3853-5. [PMID: 16041439 DOI: 10.1039/b505707h] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2,2-dimethyl cyclopentanones are readily prepared by acid catalyzed ring expansion of isopropenylcyclobutanols; the method allows ready access to the family of sesquiterpenes cuparanes and herbertanes, as demonstrated by the synthesis of (+/-)-alpha-cuparenone and the direct precursor of (+/-)-herbertene.
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Affiliation(s)
- Angela M Bernard
- Dipartimento di Scienze Chimiche, Università di Cagliari, Complesso Universitario di Monserrato, S.S 554 Bivio per Sestu, I 09042 Monserrato (Cagliari), Italy
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