S. G. Stewart

Publications86
h-index21
Citations1,236
Highly Influential Citations12
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Norcantharidin Analogues: Synthesis, Anticancer Activity and Protein Phosphatase 1 and 2A Inhibition
Cantharidin (1) and its derivatives are of significant interest as serine/threonine protein phosphatase 1 and 2A inhibitors. Additionally, compounds of this type have displayed growth inhibition of… Expand
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Norcantharimides, synthesis and anticancer activity: Synthesis of new norcantharidin analogues and their anticancer evaluation.
A range of amines was reacted with norcantharidin (2) to provide the corresponding norcantharimides (9-43). Treatment of norcantharidin with allylamine afforded the corresponding… Expand
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Heterocyclic substituted cantharidin and norcantharidin analogues--synthesis, protein phosphatase (1 and 2A) inhibition, and anti-cancer activity.
Norcantharidin (3) is a potent PP1 (IC(50)=9.0+/-1.4 microM) and PP2A (IC(50)=3.0+/-0.4 microM) inhibitor with 3-fold PP2A selectivity and induces growth inhibition (GI(50) approximately 45 microM)… Expand
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Synthesis and TNF expression inhibitory properties of new thalidomide analogues derived via Heck cross coupling.
A library of new thalidomide analogues containing an olefin functionality were synthesised using a Heck cross coupling reaction from their aryl halogenated precursor. All analogues were tested for… Expand
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Synthesis and biological evaluation of norcantharidin analogues: towards PP1 selectivity.
Simple modifications to the anhydride moiety of norcantharidin have lead to the development of a series of analogues displaying modest PP1 inhibition (low muM IC(50)s) comparable to that of… Expand
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Biogenic production of palladium nanocrystals using microalgae and their immobilization on chitosan nanofibers for catalytic applications
Spherical palladium nanocrystals were generated from aqueous Na2[PdCl4] via photosynthetic reactions within green microalgae (Chlorella vulgaris). Electrospun chitosan mats were effective for… Expand
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Nickel Phosphite/Phosphine-Catalyzed C-S Cross-Coupling of Aryl Chlorides and Thiols.
A method for the coupling of aryl chlorides and thiophenols using an air-stable nickel(0) catalyst is described. This thioetherification procedure can be effectively applied to a range of… Expand
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Domino reactions for the synthesis of anthrapyran-2-ones and the total synthesis of the natural product (±)-BE-26554A.
A domino alkyne addition/CO insertion/Nu acylation reaction to a series of novel anthrapyran-2-ones in good to excellent yields is described. In addition, an efficient synthetic sequence involving… Expand
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Identification of a thalidomide derivative that selectively targets tumorigenic liver progenitor cells and comparing its effects with lenalidomide and sorafenib.
BACKGROUND & AIMS The availability of non-tumorigenic and tumorigenic liver progenitor cell (LPC) lines affords a method to screen putative anti-liver cancer agents to identify those that are… Expand
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Stereoselective synthesis of 2,3-dihydropyrroles from terminal alkynes, azides, and α,β-unsaturated aldehydes via N-sulfonyl-1,2,3-triazoles.
A stereoselective method for synthesis of trans-2,3-disubstituted 2,3-dihydropyrroles is reported. N-Sulfonyl-1,2,3-triazoles prepared from terminal alkynes generate α-imino rhodium carbene… Expand
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