Phosphotungstic Acid: An Efficient Catalyst for Synthesis of 2-Substituted Tetrahydroquinoline via Imino Diels–Alder Reaction and Fluorescent Studies
摘要:
For the first time Phosphotungstic acid (PTA), is used as a some new catalyst for the synthesis of tetrahydroquinoline derivatives with high yields is described. PTA a heterogeneous catalyst is inexpensive, easily available, eco-friendly, water soluble, recoverable, stable to aqueous reaction conditions and further more, these 2-methyl tetrahydroquinoline derivatives shows a remarkable fluorescence property.
In vitro antifungal activity of polyfunctionalized 2-(hetero)arylquinolines prepared through imino Diels–Alder reactions
作者:Carlos M. Meléndez Gómez、Vladimir V. Kouznetsov、Maximiliano A. Sortino、Sandra L. Álvarez、Susana A. Zacchino
DOI:10.1016/j.bmc.2008.07.079
日期:2008.9
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.