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Design and synthesis of new antitumor agents with the 1,7-epoxycyclononane framework. Study of their anticancer action mechanism by a model compound. Bioorg Med Chem 2018; 26:3379-3398. [PMID: 29784272 DOI: 10.1016/j.bmc.2018.05.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 04/13/2018] [Accepted: 05/08/2018] [Indexed: 11/23/2022]
Abstract
This article describes the design, synthesis and biological evaluation of a new family of antitumor agents having the 1,7-epoxycyclononane framework. We have developed a versatile synthetic methodology that allows the preparation of a chemical library with structural diversity and in good yield. The synthetic methodology has been scaled up to the multigram level and can be developed in an enantioselective fashion. The study in vitro of a model compound, in front of the cancer cell lines HL-60 and MCF-7, showed a growth inhibitory effect better than that of cisplatin. The observation of cancer cells by fluorescence microscopy showed the presence of apoptotic bodies and a degradation of microtubules. The study of cell cycle and mechanism of death of cancer cells by flow cytometry indicates that the cell cycle arrested at the G0/G1 phase and that the cells died by apoptosis preferably over necrosis. A high percentage of apoptotic cells at the subG0/G1 level was observed. This indicates that our model compound does not behave as an antimitotic agent like nocodazole, used as a reference, which arrests the cell cycle at G2/M phase. The interaction of anticancer agents with DNA molecules was evaluated by atomic force microscopy, circular dichroism and electrophoresis on agarose gel. The results indicate that the model compound has not DNA as a target molecule. The in silico study of the model compound showed a potential good oral bioavailability.
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Montaña ÁM, Ponzano S, Sanasi MF, Kociok-Köhn G. Synthesis of the 10-oxabicyclo[5.2.1]decane framework present in bioactive natural products. Org Biomol Chem 2018; 16:1557-1580. [PMID: 29437174 DOI: 10.1039/c8ob00194d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The present work deals with the synthesis of the 10-oxabicyclo[5.2.1]decane framework present in bioactive natural products like physalins, with potential as antitumor agents. This synthetic methodology involves several key reactions: (a) synthesis of polyfunctionalized cycloheptenones by [4 + 3] cycloaddition reactions of furan precursors with oxyallyl cations; (b) Nicholas reaction with propargyl cations stabilized as dicobalt hexacarbonyl complexes; (c) demetallation and hydration of the resulting acetylenes; (d) stereoconvergent aldol cyclization to generate a key oxatricyclic intermediate and (e) a β-fragmentation process that affords, under hypoiodite photolysis, the desired product with moderate to good yield. The final compounds are the result of a radicalary β-fragmentation at the level of C2-C6 with respect to the tertiary hydroxyl group on C6, with an unexpected contraction from a ten- to a nine-membered ring system, via a radical addition to the carbonyl group on C4. The synthetic methodology has been scaled up to multigram level with good overall yield. Further biological, biochemical and biophysical studies are being carried out in our laboratory on these 1,7-epoxycyclononane derivatives to determine the potential of this kind of oxabicyclic compound as future hits and/or leads for the development of new anticancer drugs. The preliminary evaluation of the anticancer activity of the representative synthesized compounds, against the leukaemia cancer cell lines K-562 and SR, shows a promising activity with a GI50 = 0.01 μM and a LC50 = 7.4 μM for a conveniently functionalized 10-oxabicyclo[5.2.1]decane.
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Affiliation(s)
- Ángel M Montaña
- Industrial and Applied Organic Chemistry Research Unity, Department of Inorganic and Organic Chemistry, Universidad de Barcelona, Martí Franquès 1-11, 08028-Barcelona, Spain.
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Shainyan BA, Danilevich YS. Reaction of N-phenyltriflamide with 1,2-dibromoethane and propargyl bromide. Unexpected cleavage of С–С and С–N bonds. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2016. [DOI: 10.1134/s1070428016080030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Alcázar P, Cruz I, González-Romero C, Cuevas-Yañez E, Díaz E, Tamariz J, Jiménez-Vázquez HA, Corona-Becerril D, Toscano RA, Fuentes-Benítes A. Synthesis and structural studies of novel fused seven-membered carbocycles derived from exo-2-oxazolidinone dienes through (4+3) cycloadditions. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.12.065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Montaña ÁM, Grima PM, Batalla C, Sanz F, Kociok-Köhn G. Use of thep-Tolylsulfinyl Group as a Chiral Inductor in Stereoselective [4+3] Cycloaddition Reactions: Preparation of Enantiopure Polysubstituted 8-Oxabicyclo[3.2.1]oct-6-en-3-one Systems Having up to Five Stereocenters. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301814] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Melikyan GG, Voorhees E, Sepanian R. Radical Reactions of the Cobalt-Complexed Propargyl Acetals: Inter- and Intramolecular Variants. Organometallics 2013. [DOI: 10.1021/om400718w] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gagik G. Melikyan
- Department of Chemistry and
Biochemistry, California State University Northridge, Northridge, California 91330-8262, United States
| | - Erin Voorhees
- Department of Chemistry and
Biochemistry, California State University Northridge, Northridge, California 91330-8262, United States
| | - Ruth Sepanian
- Department of Chemistry and
Biochemistry, California State University Northridge, Northridge, California 91330-8262, United States
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Montaña ÁM, Ponzano S, Batalla C, Font-Bardia M. Unprecedented double benzylic rearrangement: regio- and stereospecific tandem 1,4-shift and Curtin rearrangement. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.07.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Carr JL, Sejberg JJP, Saab F, Holdom MD, Davies AM, White AJP, Leatherbarrow RJ, Beavil AJ, Sutton BJ, Lindell SD, Spivey AC. Synthesis of the C19 methyl ether of aspercyclide A via germyl-Stille macrocyclisation and ELISA evaluation of both enantiomers following optical resolution. Org Biomol Chem 2011; 9:6814-24. [PMID: 21845261 DOI: 10.1039/c1ob05862b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aspercyclide A (1) is a biaryl ether containing 11-membered macrocyclic natural product antagonist of the human IgE-FcεRI protein-protein interaction (PPI); a key interaction in the signal transduction pathway for allergic disorders such as asthma. Herein we report a novel approach to the synthesis of the C19 methyl ether of aspercyclide A, employing a Pd(0)-catalysed, fluorous-tagged alkenylgermane/arylbromide macrocyclisation (germyl-Stille reaction) as the key step, and evaluation of both enantiomers of this compound via ELISA following optical resolution by CSP-HPLC. A crystal structure for germyl hydride 27 is also reported.
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Affiliation(s)
- James L Carr
- Department of Chemistry, South Kensington campus, Imperial College, London, UK SW7 2AZ
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Montaña ÁM, Barcia JA, Kociok-Köhn G, Font-Bardía M. Synthesis of 2,6-dioxatricyclo[3.3.1.03,7]nonanes by intramolecular haloetherification and/or transannular hydroxycyclization of alkenes in [4+3]-cycloadducts. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.04.076] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Montaña ÁM, Ponzano S, Kociok-Köhn G, Font-Bardia M, Solans X. Versatile Methodology to Synthesize Oxygen-Bridged Nine- and Ten-Membered Cycloalkanes by the Hypoiodite Reaction. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700172] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sequential and tandem oxidation/acetalization procedures for the direct generation of acetals from alcohols. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.05.060] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Cecchi A, Bartalucci G, Chiappe C, Bianchini R. Competing kinetic pathways in the bromine addition to allylic ethers in 1,2-dichloroethane: Opposite temperature effects. INT J CHEM KINET 2007. [DOI: 10.1002/kin.20217] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Montaña ÁM, Ponzano S. Synthesis of 1,7-epoxycyclononanes and 1,8-epoxycyclodecanes by β-fragmentation reactions using LTA and I2. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.09.103] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Chiu P, Zhang X, Ko RY. Desymmetrizations of meso oxabicyclic compounds by asymmetric C–H insertion. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2003.12.055] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Akué-Gédu R, Rigo B. Large scale synthesis of acetylene dicarboxaldehyde mono and diacetal. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.01.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Montaña AM, Grima PM. Generation of Oxyallyl Cations by Reduction of α,α′-Diiodoketones Under Sonochemical or Thermal Conditions: Improved Methodology for the [4C(4π;)+3C(2π;)] Cycloaddition Reactions. SYNTHETIC COMMUN 2003. [DOI: 10.1081/scc-120015712] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Montaña AM, Grima PM. Asymmetry induction on the [4C(4π)+3C(2π)] cycloaddition reaction of C2-functionalized furans: influence of the chiral auxiliary nature. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00452-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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The Nicholas reaction: the use of dicobalt hexacarbonyl-stabilised propargylic cations in synthesis. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00315-0] [Citation(s) in RCA: 254] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Montaña AM, Grima PM. Induction of asymmetry on the [4+3] cycloaddition reaction of C2-functionalized furans. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)00199-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Approach to a new model of induction of stereoselectivity in the Nicholas reaction via a chiral 1-alkoxy-propargylium cation. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(01)01188-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Montaña AM, Cano M. syn-anti Diastereoselectivity in the Nicholas reaction via a chiral 1-alkoxy-propargylium cation. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)01720-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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New methodology for the [4+3] cycloaddition reactions: generation of oxyallyl cations from α,α′-diiodoketones under sonochemical or thermal conditions. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)01671-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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