Antileishmanial Activity of Cinnamic Acid Derivatives against Leishmania infantum
作者:Mayara Castro de Morais、Gisele Alves Medeiros、Fernanda Silva Almeida、Juliana da Câmara Rocha、Yunierkis Perez-Castillo、Tatjana de Souza Lima Keesen、Damião Pergentino de Sousa
DOI:10.3390/molecules28062844
日期:——
effects, which justify the efforts to find new antileishmanial drugs. Cinnamic acid derivatives have shown several pharmacological activities, including antiparasitic action. Therefore, in the present study, the biological evaluation of cinnamic acid and thirty-four derivatives against L. infantum is reported. The compounds were prepared by several synthesis methods and characterized by spectroscopic
N-Heterocyclic Carbene-Mediated Oxidative Esterification of Aldehydes: Ester Formation and Mechanistic Studies
作者:Biswajit Maji、Seenuvasan Vedachalan、Xin Ge、Shuting Cai、Xue-Wei Liu
DOI:10.1021/jo200275c
日期:2011.5.6
An unexpected N-heterocyclic carbene-catalyzed esterification of alpha,beta-unsaturated aldehydes including aromatic aldehydes with reactive cinnamyl bromides in the presence of air oxygen or MnO2 as an oxidant is described. In the presence of oxygen, halogenated and electron-deficient aldehydes react smoothly to furnish esters in good yields. Great efforts have been made on mechanistic studies to deduce a plausible mechanism, based on the experimental results and isotopic labeling experiment.
Flavin Catalysis Employing an N(5)-Adduct: an Application in the Aerobic Organocatalytic Mitsunobu Reaction
作者:Michal März、Martin Babor、Radek Cibulka
DOI:10.1002/ejoc.201900397
日期:2019.6.2
An N(5)‐flavin adduct was utilized in a catalytic Mitsunobureaction with triphenylphosphane (triphenylphosphine), in which flavin acts as a Mitsunobu reagent instead of dialkyl azodicarboxylate. Flavin is used in a catalytic amount after regeneration by dioxygen.