Direct, Catalytic, and Regioselective Synthesis of 2-Alkyl-, Aryl-, and Alkenyl-Substituted <i>N</i>-Heterocycles from <i>N</i>-Oxides
作者:Oleg V. Larionov、David Stephens、Adelphe Mfuh、Gabriel Chavez
DOI:10.1021/ol403631k
日期:2014.2.7
A one-step transformation of heterocyclic N-oxides to 2-alkyl-, aryl-, and alkenyl-substituted N-heterocycles is described. The success of this broad-scope methodology hinges on the combination of copper catalysis and activation by lithium fluoride or magnesium chloride. The utility of this method for the late-stage modification of complex N-heterocycles is exemplified by facile syntheses of new structural
Insights into the structural patterns of the antileishmanial activity of bi- and tricyclic N-heterocycles
作者:Lizzi Herrera、David E. Stephens、Abigail D'Avila、Kathryn G. George、Hadi Arman、Yu Zhang、George Perry、Ricardo Lleonart、Oleg V. Larionov、Patricia L. Fernández
DOI:10.1039/c6ob01149g
日期:——
various structural patterns in a series of novel bi- and tricyclic N-heterocycles on the activity against Leishmania major and Leishmania panamensis has been studied and compounds that are active in the low micromolar region have been identified. Both quinolines and tetrahydrooxazinoindoles (TOI) proved to have significant antileishmanial activities, while substituted indoles were inactive. We have also