Research interest in defluorinative functionzalization by means of the distinctive fluorine effect of organofluorides has led to rapid development in this topic. Herein, we reported an unprecedented four-component defluorinative reaction of allylic fluorides, amidines, and Cs2CO3 for the convenient synthesis of valuable pyrimidine-containing amidino carbamates under transition-metal-free conditions
通过有机氟化物独特的氟效应对脱氟功能化的研究兴趣导致了该主题的快速发展。在此,我们报道了一种前所未有的烯丙基氟化物、脒和 Cs 2 CO 3的四组分脱氟反应,用于在无过渡金属条件下方便地合成有价值的含嘧啶脒氨基氨基甲酸酯。实现多键串联协议的合成关键依赖于α位羟基的定向功能和烯丙基氟化物中全氟烷基取代基的活化作用。此外,碳酸铯作为绿色羰基等价物用于正式的 CO 捕获。机理研究表明,反应通过一种可能的环状碳酸酯中间体。
diverse and complex molecular scaffolds. An unprecedented formal [3+1+1+1] annulation approach for the one-step synthesis of fluoroalkylated 2-H-pyrimidines commencing from perfluoroalkyl alkenes, paraformaldehyde, and ammonium carbonate is described. By harnessing readily accessible (CH2O)n and cheap (NH4)2CO3 as a formamidine surrogate, this method effectively replaces traditionally preformed amidines
In the absence of effective drugs or vaccines for the treatment of the five Dengue Virus serotypes, the search for novel antiviral drugs is of primary importance for the scientific community. In this context, drug repurposing represents the most used strategy; however, the study of host targets is now attracting attention since it allows identification of broad-spectrum drugs endowed with high genetic barrier. In the last ten years our research group identified several small molecules DDX3X inhibitors and proved their efficacy against different viruses including novel emerging ones. Herein, starting from a screening of our compounds, we designed and synthesized novel derivatives with potent activity and high selectivity. Finally, we synthesized a fluorescent inhibitor that allowed us to study DDX3X cellular localization during DENV infection in vitro. Immunofluorescence analysis showed that our inhibitor colocalized with DDX3X, promoting the reduction of infected cells and recovering the number of viable cells.
Addition d'iodoperfluoroalcanes RFI (CnF2n + 1, n=4, 6, 8) au 2-méthyl-3-butyn-2-ol catalysée par le zinc dans différent solvants. Application à la synthèse de l'acétylénique à chaîne perfluorée
The addition of perfluoroalkyl iodides (R(F)I) to 2-methyl-3-butyn-2-ol activated by suspended zinc dust has been studied in different solvents and found to lead readily to perfluoroalkene iodides. The latter when treated with a base gave a perfluoroalkyne, R(F)C = CH.