Nickel-Catalyzed Intramolecular Arylcyanation for the Synthesis of 3,3-Disubstituted Oxindoles
作者:Andy Yen、Mark Lautens
DOI:10.1021/acs.orglett.8b01772
日期:2018.7.20
A nickel-catalyzed arylcyanation reaction for the synthesis of 3,3-disubstitutedoxindoles has been developed. This method features a bench-stable precatalyst system and serves as an economical alternative to the existing palladium-catalyzed arylcyanations described to date. A wide scope of oxindole products were accessible in moderate to good yields, and the rich chemistry of the newly installed nitrile
Synthesis and Biological Evaluation of (−)- and (+)-Debromoflustramine B and Its Analogues as Selective Butyrylcholinesterase Inhibitors
作者:Ernesto Rivera-Becerril、Pedro Joseph-Nathan、Víctor M. Pérez-Álvarez、Martha S. Morales-Ríos
DOI:10.1021/jm800277g
日期:2008.9.11
have been synthesized as debromoflustramine B (4a) analogues for their evaluation as cholinesterase inhibitors. Structure-activity studies of this series revealed the optimum pharmacophoric elements required for activity and resulted in the discovery of selective butyrylcholinesterase inhibitors with micromolar potency. Biological testing demonstrated that (-)-4a was 7500 times more potent than its enantiomer