Browsing by Author "0534b0fa-c177-4c50-bee1-59f1a064d47b"
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Loghin, Felicia; Chagraoui, Abdeslam; Asencio, Marcelo; Comoy, Etienne; Speisky Cosoy, Hernán; Cassels Niven, Bruce; Protais, Philippe (Elsevier, 2003)(S)-(+)-boldine, an aporphine alkaloid displaying antioxidative and dopaminergic properties, and six of its derivatives (glaucine, 3-bromoboldine, 3-iodoboldine, 8-aminoboldine, 8-nitrosoboldine and 2,9-O,O′-dipivaloylboldine) ...
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Sobarzo Sánchez, Eduardo; Arbaoui, Jeannette; Protais, Philippe; Cassels Niven, Bruce (American Chemical Society and American Society of Pharmacognosy, 2000-03-15)(S)-(+)-Boldine (1) was brominated, chlorinated, and iodinated using molecular bromine in acetic acid or N-halosuccinimides in trifluoroacetic acid. Initial halogenation occurs at C-3, followed (in the cases of chlorine ...
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Andreu, Inmaculada; Cortes, Diego; Protais, Philippe; Cassels Niven, Bruce; Chagraoui, Abdeslam; Cabedo, Nuria (Elsevier Science Ltd., 1999-11-15)AbstractÐThe preparation of N-methyl-BTHIQ (4) from N-phenylethyl-phenacetamide (1) by cyclization, reduction and N-alkyl- ation in acid medium has been achieved in good yield in a `one-pot' procedure. Acylation of imine ...
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Asencio, Marcelo; Hurtado-Guzmán, Claudio; López, John J.; Cassels Niven, Bruce; Protais, Philippe; Chagraoui, Abdeslam (Elsevier Ltd, 2005)Halogenation of the aporphine alkaloid boldine at the 3-position leads to increased affinity for rat brain D1-like dopaminergic receptors with some selectivity over D2-like receptors. A series of 3-halogenated and ...
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Cabedo, Nuria; Protais, Philippe; Cassels Niven, Bruce; Cortes, Diego (American Chemical Society and American Society of Pharmacognosy, 1998-01-15)(R)-(+)-nor-Roefractine (1) was synthesized by the Bischler-Napieralski route, using asymmetric reduction of the 1,2-didehydro precursor imine with sodium (S)-N-CBZ-prolinyloxyborohydride. Compound 1 was able to displace ...