Synthesis and Anticholinesterase Activity of 3-{[4-Methyl-3-(4-methylpiperazin-1-yl)]pent-1-en-1-yl}-4H-chromen-4-ones
摘要:
A procedure has been developed and optimized for the synthesis of 3-{[4-methyl-3-(4-methylpiperazin-1-yl)]pent-1-en-1-yl}-4H-chromen-4-ones (as dihydrochlorides) by an unusual version of the Morita-Baylis-Hillman reaction. A number of the title compounds with various substituents in the chromene fragment and their deamination products have been synthesized, and their inhibitory activity against butyrylcholinesterase has been studied.
A One-Pot Regiospecific Synthesis of Highly Functionalized 1,4-Benzodioxin Derivatives from an Electrochemically Induced Diels−Alder Reaction
作者:Daiwang Xu、Angèle Chiaroni、Martine Largeron
DOI:10.1021/ol052146e
日期:2005.11.1
[reaction: see text] The anodic oxidation of pyrogallol derivatives produces chemically unstable o-quinone heterodienes, which are trapped in situ by enamine dienophiles through regiospecific inverse-electron-demand Diels-Alder reactions. The possibility of introducing variations in both cycloaddition partners gives rise to highly substituted 1,4-benzodioxin cycloadducts with up to five elements of