Synthesis, antibacterial activity, and biological evaluation of formyl hydroxyamino derivatives as novel potent peptide deformylase inhibitors against drug-resistant bacteria
摘要:
Peptide deformylase (PDF) has been identified as a promising target for novel antibacterial agents. In this study, a series of novel formyl hydroxyamino derivatives were designed and synthesized as PDF inhibitors and their antibacterial activities were evaluated. Among the potent PDF inhibitors (1o, 1q, 1o', 1q', and 1x), in vivo studies showed that compound 1q possesses mild toxicity, a good pharmacokinetic profile and protective effects. The good in vivo efficacy and low toxicity suggest that this class of compounds has potential for development and use in future antibacterial drugs. (c) 2014 Elsevier Masson SAS. All rights reserved.
An efficient tertiary alkylation reaction of olefins with 1,3-dicarbonyl compounds was developed by virtue of copper catalyst without the use of expensive ligands or additives. In contrast to alkyl Heck-type reaction, alkylhalide is not required. Notably, by varying the nitrogen and air atmosphere, the reaction selectively produces alkylation and alkylation–oxygenation products, respectively. Initial
Unnatural α-amino ethyl esters from diethyl malonate or ethyl β-bromo-α-hydroxyiminocarboxylate
作者:Eloi P Coutant、Vincent Hervin、Glwadys Gagnot、Candice Ford、Racha Baatallah、Yves L Janin
DOI:10.3762/bjoc.14.264
日期:——
We have explored here the scope of the age-old diethyl malonate-based accesses to α-aminoesters involving Knoevenagel condensations of diethyl malonate on aldehydes, reductions of the resulting alkylidenemalonates, the preparation of the corresponding α-hydroxyimino esters and their final reduction. This synthetic pathway turned out to be general although some unexpected limitations were encountered
Copper-Catalyzed Cross-Nucleophile Coupling of β-Allenyl Silanes with Tertiary C–H Bonds: A Radical Approach to Branched 1,3-Dienes
作者:Qi-Chao Shan、Lu-Min Hu、Wei Qin、Xu-Hong Hu
DOI:10.1021/acs.orglett.1c02112
日期:2021.8.6
3-dienes throughoxidative coupling of two nucleophilic substrates, β-allenyl silanes, and hydrocarbons appending latent functionality by copper catalysis. Notably, C(sp3)–H dienylation proceeded in a regiospecific manner, even in the presence of competitive C–Hbonds that are capable of occurring hydrogen atom transfer process, such as those located at benzylic and other tertiary sites, or adjacent to an
[EN] IMIDAZOPYRAZINE DERIVATIVES, PROCESS FOR PREPARATION THEREOF, AND THEIR USES AS LUCIFERINS<br/>[FR] DÉRIVÉS D'IMIDAZOPYRAZINE, LEUR PROCÉDÉ DE PRÉPARATION ET LEURS UTILISATIONS EN TANT QUE LUCIFÉRINES
申请人:PASTEUR INSTITUT
公开号:WO2018197727A1
公开(公告)日:2018-11-01
The present invention is in the field of bioluminescence in biology and/or medicine. In particular, the invention provides imidazopyrazine derivatives, processes for preparation thereof, and their uses as luciferins.
Es wird die Synthese von Vertretern der bisher unbekannten Isoxazolidin-3,5-dione durch Umsetzung von Hydroxylamin oder N-monosubstituierten Hydroxylaminen mit substituerten Malonsäurechloriden beschrieben. Eine Anzahl der neuen Verbindungen wirken im Tierexperiment antiphlogistisch.