Synthesis and pharmacological evaluation of new cysLT1 receptor antagonists
摘要:
This paper describes the synthesis and pharmacological evaluation of three series of compounds 4a-b, 13a-k and 19, structurally related to the known potent cysLT(1) receptor antagonists RG-12553, ICI-204219 and ONO-1078, respectively. The common structural feature of these new series is the presence of a 4-quinolone nucleus acting as a template for substitution of the aromatic nucleus present in the prototype antagonists. We describe the evolution of these series leading to antagonists with potency at nanomolar concentrations in vitro.
Direct C-3-Alkenylation of Quinolones via Palladium-Catalyzed CH Functionalization
作者:Mingzong Li、Liangxi Li、Haibo Ge
DOI:10.1002/adsc.201000364
日期:2010.10.4
An unprecedented C-3-alkenylation of quinolones was reported through palladium-catalyzed CH functionalization with 1% catalyst loading. This method provides an efficient route to a variety of new quinolone derivatives.
We have synthesized quinolinones with potential antiparasitic and anti-HIV activities by an original two-step method involving microwave irradiation and have evaluated their activities against Plasmodium falciparum, Leishmania donovani, Trichomonas vaginalis, and HIV. None of the tested compounds had been previously described using this method of synthesis. One of the compounds had interesting antiparasitic
Gas-phase pyrolysis of aminomethylene Meldrum’s acidderivatives gave quinolinones and/or amines depending on the -nature of arylamino moiety. Effect of substituent on reaction rate and nature of pyrolysis products supports the suggested intramolecular nucleophilic substitution reaction via initially formed keteneamine intermediate.