In vitro antifungal activity of polyfunctionalized 2-(hetero)arylquinolines prepared through imino Diels–Alder reactions
摘要:
Diverse polyfunctionalized quinolines, easily prepared using Lewis acid-catalyzed imino Diels-Alder reactions between corresponding aldimines, were tested for antifungal properties against standardized as well as clinical isolates of clinically important fungi. Among them, 4-pyridyl derivatives displayed the best activities mainly against dermatophytes. The activity appears not to be related neither to the lipophilicity nor to the basicity of compounds. (C) 2008 Elsevier Ltd. All rights reserved.
An efficient, one-pot, domino synthesis of quinolines via the coupling of iodoanilines with allylicalcohols facilitated by palladium catalysis is described. The overall synthetic process involves an intermolecular Heck coupling between 2-iodoanilines and allylicalcohols, intramolecular condensation of in situ generated ketones with an internal amine functional group, and a dehydrogenation sequence
Anti-leishmanial evaluation of C2-aryl quinolines: Mechanistic insight on bioenergetics and sterol biosynthetic pathway of Leishmania braziliensis
作者:Daznia Bompart、Jorge Núñez-Durán、Daniel Rodríguez、Vladimir V. Kouznetsov、Carlos M. Meléndez Gómez、Felipe Sojo、Francisco Arvelo、Gonzalo Visbal、Alvaro Alvarez、Xenón Serrano-Martín、Yael García-Marchán
DOI:10.1016/j.bmc.2013.04.063
日期:2013.7
A series of diverse simple C2-aryl quinolines was synthesized de novo via a straightforward synthesis based on the acid-catalyzed multicomponent imino Diels-Alder reactions. Seven selected quinolines were evaluated at different stages of Leishmania braziliensis parasite. Among them, the 6-ethyl-2-phenylquinoline 5f was able to inhibit the growth of promastigotes of this parasite without affecting the mammalian cells viability and decreasing the number of intracellular L. braziliensis amastigotes on BMDM macrophages. The mechanism of action studied for the selected compound consisted in: (1) alteration of parasite bioenergetics, by disrupting mitochondrial electrochemical potential and alkalinization of acidocalcisomes, and (2) inhibition of ergosterol biosynthetic pathway in promastigote forms. These results validate the efficiency of quinoline molecules as leishmanicide compounds. (C) 2013 Elsevier Ltd. All rights reserved.