Browsing Thompson, Alison by Title

Now showing items 21-40 of 57

  • An Improved Method for the Synthesis of F-BODIPYs from Dipyrrins and Bis(dipyrrin)s 

    Lundrigan, T., Baker, A. E., Longobardi, L. E., Wood, T. E., Smithen, D. A., Crawford, S. M., ... & Thompson, A. (2012). An Improved Method for the Synthesis of F-BODIPYs from Dipyrrins and Bis (dipyrrin) s. Organic letters, 14(8), 2158-2161. DOI: 10.1021/ol300681w
    An improved methodology for the synthesis of F-BODIPYs from dipyrrins and bis(dipyrrin)s is reported. This strategy employs lithium salts of dipyrrins as intermediates that are then treated with only one equivalent of boron ...

  • Influence of B-Ring Modifications on Proton Affinity, Transmembrane Anion Transport and Anti-Cancer Properties of Synthetic Prodigiosenes 

    Marchal, E., Rastogi, S., Thompson, A., & Davis, J. T. (2014). Influence of B-ring modifications on proton affinity, transmembrane anion transport and anti-cancer properties of synthetic prodigiosenes. Organic & biomolecular chemistry, 12(38), 7515-7522. doi: 10.1039/c4ob01399a.
    Prodigiosin is the parent compound of the tripyrrolic natural products known as the prodigiosenes. Some of these natural products and their synthetic analogs show anti-cancer, immunosuppressive and antimicrobial actions, ...

  • Intramolecular nucleophilic displacement of halogen by phosphinate and thiophosphinate anions: relative rates of formation of five- and six-membered rings 

    Chaudhry, A., MJP Harger, P. Shuff, and A. Thompson. 1999. "Intramolecular nucleophilic displacement of halogen by phosphinate and thiophosphinate anions: relative rates of formation of five- and six-membered rings." Journal of the Chemical Society-Perkin Transactions 1: 1347-1352.
    No abstract available.

  • Intramolecular Nucleophilic-Substitution by Phosphinate and Thiophosphinate Anions - Relative Rates of Formation of 5-Membered and 6-Membered Rings 

    CHAUDHRY, A., MJP HARGER, P. SHUFF, and A. THOMPSON. 1995. "Intramolecular Nucleophilic-Substitution by Phosphinate and Thiophosphinate Anions - Relative Rates of Formation of 5-Membered and 6-Membered Rings." Journal of the Chemical Society-Chemical Communications: 83-84.
    No abstract available.

  • Investigations into the nucleophilic meso-substitution of F-BODIPYs and improvements to the synthesis of 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene. 

    Crawford, Sarah M., and Alison Thompson. 2011. "Investigations into the nucleophilic meso-substitution of F-BODIPYs and improvements to the synthesis of 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene." Heterocycles 83(2): 311-322.
    A series of three F-BODIPYs, with varying levels of steric crowding about the meso-position were selected to investigate nucleophilic meso-substitution of F-BODIPYs. The synthesis of one of these F-BODIPYs, 4,4-difluor ...

  • Investigations regarding the utility of prodigiosenes to treat leukemia 

    Smithen, Deborah A., A. Michael Forrester, Dale P. Corkery, Graham Dellaire, et al. 2013. "Investigations regarding the utility of prodigiosenes to treat leukemia." Organic & Biomolecular Chemistry 11(1): 62-68.
    Prodigiosenes, possessing a 4-methoxypyrrolyldipyrrin skeleton, are known for their anti-cancer activity. Structural modification of the C-ring resulted in a series of prodigiosenes that displayed promising activity against ...

  • Isolation and characterization of a novel tetrahydro-[2,2 ']bipyrrolyl dimer as an impurity from a Knorr reaction 

    Thompson, A., Y. Alattar, CS Beshara, RK Burley, et al. 2004. "Isolation and characterization of a novel tetrahydro-[2,2 ']bipyrrolyl dimer as an impurity from a Knorr reaction." Journal of Heterocyclic Chemistry 41(5): 777-781.
    A novel dimer, tetraethyl 2,2',3,3'-tetramethyl-1,1',2,2'-tetrahydro-4H,4'H-2,2'-bipyrrolyi-5,5,5',5'-tetracarboxylate, has been isolated as an impurity (0.4% yield) from a Knorr reaction for the synthesis of ...

  • Microwave-accelerated synthesis of benzyl 3,5-dimethyl-pyrrole-2-carboxylate 

    Regourd, Jasmine, Ian M. Comeau, Cory S. Beshara, and Alison Thompson. 2006. "Microwave-accelerated synthesis of benzyl 3,5-dimethyl-pyrrole-2-carboxylate." Journal of Heterocyclic Chemistry 43(6): 1709-1714.
    Benzyl 3,5-dimethyl-pyrrole-2-carboxylate, a very useful pyrrole in porphyrin and dipyrromethene synthesis, can be synthesized via the Knorr-type reaction, but in low yield. Alternative routes to benzyl 3,5-dimethyl-pyrr ...

  • Microwave-assisted reduction of F-BODIPYs and dipyrrins to generate dipyrromethanes 

    Melanson, J. A., Smithen, D. A., Cameron, T. S., & Thompson, A. (2013). Microwave-assisted reduction of F-BODIPYs and dipyrrins to generate dipyrromethanes. Canadian Journal of Chemistry, 92(8), 688-694. doi: https://doi.org/10.1139/cjc-2013-0341
    The reduction of BODIPYs and dipyrrins to dipyrromethanes, via a reaction involving ethylene glycol and sodium methoxide, is reported. When benzyl alcohol is used in place of ethylene glycol, the addition of 2,4-dinitrop ...

  • Photo-induced Anticancer Activity and Singlet Oxygen Production of Prodigiosenes 

    Savoie, H., Figliola, C., Marchal, E., Crabbe, B. W., Hallett-Tapley, G. L., Boyle, R. W., & Thompson, A. (2018). Photo-induced anticancer activity and singlet oxygen production of prodigiosenes. Photochemical & Photobiological Sciences, 17(5), 599-606. DOI: 10.1039/C8PP00060
    The photo-induced cytotoxicity of prodigiosenes is reported. One prodigiosene represents a synthetic analogue of the natural product prodigiosin, and two are conjugated to molecules that target the estrogen receptor (ER). ...

  • The Photodecarboxylation of Substituted Naphthylmethyl Arylacetate Esters: Synthesis of Naphthylarylethanes 

    Hilborn, James W., Moya-Barrios, Reinaldo, Thompson, Alison. (2019). The Photodecarboxylation of Substituted Naphthylmethyl Arylacetate Esters: Synthesis of Naphthylarylethanes. ACS Publication (pre-publication).
    The synthesis of naphthylarylethanes via the photodecarboxylation of naphthylmethyl arylacetate esters is reported where the aryl group is able to stabilize a charge transfer reaction. The reaction proceeds via intramolecular ...

  • Probing the Hydrolytic Reactivity of 2-Difluoromethyl Pyrroles 

    Published version: Melanson JA, Figliola C, Smithen DA, Kajetanowicz AK, Thompson A. (2017). Probing the Hydrolytic Reactivity of 2-Difluoromethyl Pyrroles. Organic and Biomolecular Chemistry. 15, 144-152. doi:10.1039/c6ob01441k

  • Prodigiosenes Conjugated to Tamoxifen and Estradiol 

    Published version: Marchal E1, Figliola C, Thompson A. (2017) Prodigiosenes Conjugated to Tamoxifen and Estradiol. Organic and Biomolecular Chemistry, 15(25):5410-5427. doi: 10.1039/c7ob00943g

  • Regioselective Substituent Effects upon the Synthesis of Dipyrrins from 2-Formyl Pyrroles 

    Regioselective Substituent Effects upon the Synthesis of Dipyrrins from 2-Formyl Pyrroles. Beh, M.H.R.; Figliola, C.; Lund, K-l. A.R.; Kajetanowicz, A.K.; Johnsen, A.E.; Aronitz, E.M.; Thompson, A. Can. J. Chem. 2018, 96, 779-784, special issue to honour Dalhousie’s 200th anniversary (NSERC). https://doi.org/10.1139/cjc-2017-0662
    The synthesis of symmetric α-free meso-H-dipyrrin hydrobromides from 5-H-2-formyl pyrroles was investigated. The self-condensation produces regioisomeric dipyrrins through the adoption of two mechanistic pathways. The key ...

  • Robust Synthesis of F-BODIPYs 

    Publisher's version: Beh, Michael; Douglas, Katherine; House, Kelsey; Murphy, Alexandra; Sinclair, Jackson; and Thompson, Alison. Robust Synthesis of F-BODIPYs. Org. Biomol. Chem. 2016, 14, 11473-11479. DOI: 10.1039/c6ob02238c
    F-BODIPYs are widely used in applications that rely upon their highly tunable optical properties. A protocol is established for the high-yielding synthesis of F-BODIPYs involving non-anhydrous reagents and not requiring ...

  • Scope and limitations in sulfur ylide mediated catalytic asymmetric aziridination of imines: use of phenyldiazomethane, diazoesters and diazoacetamides 

    Aggarwal, VK, M. Ferrara, CJ O'Brien, A. Thompson, et al. 2001. "Scope and limitations in sulfur ylide mediated catalytic asymmetric aziridination of imines: use of phenyldiazomethane, diazoesters and diazoacetamides." Journal of the Chemical Society-Perkin Transactions 1: 1635-1643.
    No abstract available.

  • Self-assembly of novel trimers using dipyrromethene ligands 

    Thompson, A., SJ Rettig, and D. Dolphin. 1999. "Self-assembly of novel trimers using dipyrromethene ligands." Chemical Communications: 631-632.
    Ligands comprising two dipyrromethene units linked at the beta-position have been used to prepare trimeric complexes with Zn-II and Co-II; the structure of the Zn-II complex is confirmed by X-ray analysis.

  • Step-wise synthetic approach is necessary to access g-conjugates of folate: folate-conjugated prodigiosenes 

    Despite the vast literature that describes reacting folic acid with a pharmacophore, this route is ineffective in providing the correct regioisomer of the resulting conjugate. We herein present a step-wise route to the ...

  • Synthesis and Anticancer Activity of Prodigiosenes bearing C-Ring Esters and Amides 

    Published version: Lund, K., Figliola, C., Kajetanowicz, A. & Thompson, A. (2017) Synthesis and Anticancer Activity of Prodigiosenes bearing C-Ring Esters and Amides, RSC Advances, 50 (7), 18617. doi: 10.1039/c7ra01628j

  • Synthesis and Antimalarial Activity of Prodigiosenes 

    Marchal, E., Smithen, D. A., Uddin, M. I., Robertson, A. W., Jakeman, D. L., Mollard, V., ... & Thompson, A. (2014). Synthesis and antimalarial activity of prodigiosenes. Organic & biomolecular chemistry, 12(24), 4132-4142. DOI:b10.1039/C3OB42548G
    Several analogues of the natural compound prodigiosin with modified A- and C-rings were synthesised as were some of their tin, cobalt, boron and zinc complexes. The antimalarial activity of these prodigiosenes was evaluated ...