3 documents found, page 1 of 1
N-1,2,3-Triazole-Isatin Derivatives for Cholinesterase and -Amyloid Aggregatio...
Burke, AJ; Marques, CS; Alcaro, S; Bagetta, D; Carreiro, EP; Hoffmann, M; Lopez, O; Fernández-Bolaños, J; Decker, M; Bolognesi, ML; Monti, SOur goal was the evaluation of a series of N-1,2,3-triazole-isatin derivatives for multi-target activity which included cholinesterase (ChE) inhibition and β-amyloid (Aβ) peptide anti-aggregation. The compounds have shown considerable promise as butyrylcholinesterase (BuChE) inhibitors. Although the inhibition of eel acetylcholinesterase (eeAChE) was weak, the inhibitions against equine BuChE (eqBuChE) and huma...
Ambipolar Pentacyclic Diamides with Interesting Electrochemical and Optoelectro...
Burke, aNTHONY; Marques, CS; Ramalho, JP; Branco, L; Gago, Sandra; Cruz, Hugo; Lawrence, S; Morgado, JDeveloping organic semiconductors for organic thin film transistors (OTFT) and optoelectronic applications is a challenge. We developed highly crystalline pentacyclic diimides (3) and (4) which showed good OTFT and OLED potential and energy gaps of 2.60 eV and 2.54 eV. They exhibited interesting photo and eletroluminescence activity. Both compounds showed good quantum yields (0.56 for (3) and 0.60 for (4)).
Accessing new 5-α-(3,3-Disubstituted Oxindole)-Benzylamine Derivatives from Isa...
Burke, aNTHONY; Marques, CS; Erxleben, A; McArdle, PA one-step, three-component Petasis reaction of isatin derived 5-arylboronate-3-substituted oxindole derivatives with salicylaldehydes and secondary amines affords new enantiomerically pure structurally diverse 5-alpha-(3-substituted-oxindole)-benzylamine derivatives. The reaction shows good substrate and reagent scope affording the products with good to excellent yields (up to >99 % yield) and enantioselectivi...