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Tröster A, Bach T. Triplet-sensitised di-π-methane rearrangement of N-substituted 2-azabarrelenones. Chem Commun (Camb) 2019; 55:302-305. [PMID: 30516181 DOI: 10.1039/c8cc08704k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
When irradiated at λ = 366 nm or at λ = 420 nm in the presence of an appropriate sensitiser the title compounds underwent a di-π-methane rearrangement which led to the formation of tricyclic azasemibullvalenones (2a,2a1,2b,4a-tetrahydroazacyclopropa[cd]pentalenones) in yields of 63-87%.
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Affiliation(s)
- Andreas Tröster
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, 85747 Garching, Germany.
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Camps P, Gómez T, Otermin A, Font-Bardia M, Estarellas C, Luque FJ. Short Access to Belt Compounds with Spatially Close C=C Bonds and Their Transannular Reactions. Chemistry 2015; 21:14036-46. [PMID: 26376331 DOI: 10.1002/chem.201502351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Indexed: 11/09/2022]
Abstract
Two domino Diels-Alder adducts were obtained from 3,7-bis(cyclopenta-2,4-dien-1-ylidene)-cis-bicyclo[3.3.0]octane and dimethyl acetylenedicarboxylate or N-methylmaleimide under microwave irradiation. From the first adduct, a C20H24 diene with C2v symmetry was obtained by Zn/AcOH reduction, hydrolysis, oxidative decarboxylation, and selective hydrogenation. Photochemical [2+2] cycloaddition of this diene gave a thermally unstable cyclobutane derivative, which reverts to the diene. However, both the diene and the cyclobutane derivatives could be identified by X-ray diffraction analysis upon irradiation of the diene crystal. New six-membered rings are formed upon the transannular addition of bromine or iodine to the diene. The N-type selectivity of the addition was examined by theoretical calculations, which revealed the distinct susceptibility of the doubly bonded carbon atoms to the bromine attack.
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Affiliation(s)
- Pelayo Camps
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia and Institut de Biomedicina (IBUB), Universitat de Barcelona, Av. Joan XXIII 27-31, 08028 Barcelona (Spain).
| | - Tània Gómez
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia and Institut de Biomedicina (IBUB), Universitat de Barcelona, Av. Joan XXIII 27-31, 08028 Barcelona (Spain)
| | - Ane Otermin
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia and Institut de Biomedicina (IBUB), Universitat de Barcelona, Av. Joan XXIII 27-31, 08028 Barcelona (Spain)
| | - Mercè Font-Bardia
- Departament de Cristallografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí Franquès s/n. 08028 Barcelona (Spain) and Unitat de Difracció de RX, Centres Científics i Tecnològics de la Universitat de Barcelona (CCiTUB), Solé i Sabarís 1-3, 08028 Barcelona (Spain)
| | - Carolina Estarellas
- Departament de Fisicoquímica, Facultat de Farmàcia and Institut de Biomedicina (IBUB), Universitat de Barcelona, Prat de la Riba 171, 08921 Santa Coloma de Gramenet (Spain)
| | - Francisco Javier Luque
- Departament de Fisicoquímica, Facultat de Farmàcia and Institut de Biomedicina (IBUB), Universitat de Barcelona, Prat de la Riba 171, 08921 Santa Coloma de Gramenet (Spain)
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Carroll FI. EPIBATIDINE ANALOGS SYNTHESIZED FOR CHARACTERIZATION OF NICOTINIC PHARMACOPHORES-A REVIEW. HETEROCYCLES 2009; 79:99-120. [PMID: 25530665 DOI: 10.3987/rev-08-sr(d)1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In 1992 Daly and co-workers reported the isolation of a new natural product, epibatidine. Future studies showed that epibatidine was an nAChR ligand with analgesic potency 200-400 times greater than that of morphine. However, its potential as a new drug was limited by its toxic side effects, probably resulting from its activity at a number of nAChR subtypes. Epibatidine's unique structure and potent activity made it an ideal lead structure for the development of nAChR ligands with reduced side effects and better nAChR subtype selectivity. This review presents the synthetic methods we have used to synthesize a number of epibatidine agonists, antagonists, and mixed agonists/antagonists to better characterize the α4β2 nAChR pharmacophore and hopefully provide compounds that have potential for treating nicotine addiction.
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Affiliation(s)
- F Ivy Carroll
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, NC 27709, USA
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Carroll FI, Robinson TP, Brieaddy LE, Atkinson RN, Mascarella SW, Damaj MI, Martin BR, Navarro HA. Synthesis and Nicotinic Acetylcholine Receptor Binding Properties of Bridged and Fused Ring Analogues of Epibatidine. J Med Chem 2007; 50:6383-91. [DOI: 10.1021/jm0704696] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- F. Ivy Carroll
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - T. Philip Robinson
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - Lawrence E. Brieaddy
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - Robert N. Atkinson
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - S. Wayne Mascarella
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - M. Imad Damaj
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - Billy R. Martin
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - Hernán A. Navarro
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
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Brieaddy LE, Wayne Mascarella S, Navarro HA, Atkinson RN, Damaj M, Martin BR, Carroll F. Synthesis of bridged analogs of epibatidine. 3-Chloro-5,7,8,9,9a,10-hexahydro-7,10-methanopyrrolo[1,2-b]-2,6-naphthyridine and 2-chloro-5,5a,6,7,8,10-hexahydro-5,8-methanopyrrolo[2,1-b]-1,7-naphthyridine. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)00575-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Horti A, Ravert HT, London ED, Dannals RF. Synthesis of a radiotracer for studying nicotinic acetylcholine receptors: (+/−)-exo-2-(2-[18F]fluoro-5-pyridyl)-7-azabicyclo[2.2.1]heptane. J Labelled Comp Radiopharm 1998. [DOI: 10.1002/(sici)1099-1344(199604)38:4<355::aid-jlcr842>3.0.co;2-3] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Chen Z, Trudell ML. Chemistry of 7-Azabicyclo[2.2.1]hepta-2,5-dienes, 7-Azabicyclo[2.2.1]hept-2-enes, and 7-Azabicyclo[2.2.1]heptanes. Chem Rev 1996; 96:1179-1194. [PMID: 11848784 DOI: 10.1021/cr9500388] [Citation(s) in RCA: 134] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhengming Chen
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148
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Altenbach HJ, Martin HD, Mayer B, Müller M, Constant D, Vogel E. Small and Medium Rings, 74. Syntheses and Photoelectron Spectra of 7-Azanorbornadiene and Related Compounds An Analysis with Fragment Orbitals. ACTA ACUST UNITED AC 1991. [DOI: 10.1002/cber.19911240420] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Prinzbach H, Bingmann H, Fritz H, Markert J, Knothe L, Eberbach W, Brokatzky-Geiger J, Sekutowski JC, Krüger C. Photochemische Umwandlungen, 651). Die 3σ → 3π-Route zu 1H-Azepinen/Benzoliminen. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/cber.19861190223] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Zaima T, Matsunaga Y, Mitsuhashi K. A novel synthesis of 1H-pyrrole-2,3,4,5-tetracarboxylates. J Heterocycl Chem 1983. [DOI: 10.1002/jhet.5570200101] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Marchand AP, Allen RW. Synthesis of deuterium-labeled 7-azanorobrnane and 2-azabicyclo [2.2.2]-octane derivatives. J Labelled Comp Radiopharm 1981. [DOI: 10.1002/jlcr.2580180915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Marchand AP, Allen RW. Mass spectral studies of some derivatives of 7-azanorbornane and 2-azabicyclo-[2.2.2]octane. ACTA ACUST UNITED AC 1980. [DOI: 10.1002/oms.1210150914] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Kinetically controlled protonation as an aid to conformational analysis of the - (nitrogen inversion) equilibrium in 7-azanorbornenes and 5-azabicyclo[2.2.2]octenes. Tetrahedron Lett 1977. [DOI: 10.1016/s0040-4039(01)92708-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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