3-Hydroxy-1,5-dihydro-2H-pyrrol-2-ones as novel antibacterial scaffolds against methicillin-resistant Staphylococcus aureus
作者:Alexander Q. Cusumano、Joshua G. Pierce
DOI:10.1016/j.bmcl.2018.02.047
日期:2018.9
antibacterial agents against methicillin-resistant S. aureus (MRSA) and methicillin-resistant S. epidermidis (MRSE). Leadcompound 38 showed minimum inhibitory concentrations (MICs) of 8 and 4 μg/mL against MRSA and MRSE, respectively. Furthermore, compound 38 displayed a MIC of 8–16 μg/mL against linezolid-resistant MRSA. These molecules, previously underexplored as antibacterial agents, serve as a
Molecular structure of methyl phenylpyruvates studied by 1H NMR and IR spectroscopies and quantum mechanical calculations
作者:H.-H. Lee、T. Takai、H. Senda、A. Kuwae、K. Hanai
DOI:10.1016/s0022-2860(98)00374-3
日期:1998.8
Abstract Molecular structure of methyl phenylpyruvate (MPP) and its p -substituted derivatives has been investigated by 1 H NMR and IR spectroscopies. The spectral data point out that MPPs take the enol form both in solution and in the solidstate. The ab initio calculations were carried out in order to get information on the configurational and conformational preferences in the enol form. It is suggested
摘要 通过 1 H NMR 和红外光谱研究了苯基丙酮酸甲酯 (MPP) 及其对位取代衍生物的分子结构。光谱数据指出 MPP 在溶液和固态中均采用烯醇形式。进行 ab initio 计算是为了获得有关烯醇形式的构型和构象偏好的信息。计算表明,烯醇OH基团和酯CO基团之间的分子间和分子内氢键对构象异构体的稳定很重要。
Chemocontrolled reduction of aromatic α-ketoesters by NaBH4: Selective synthesis of α-hydroxy esters or 1,2-diols
作者:Vincent Dalla、Philippe Cotelle、Jean Pierre Catteau
DOI:10.1016/s0040-4039(97)00154-8
日期:1997.3
alpha-hydroxyesters 5a-g or diols 6a-g have been obtained in high yields by reduction of aromatic alpha-ketoesters 4 once or twice respectively by using NaBH4 as the reducer under suitable conditions. The use of a solvent that does not interact with the reagent allowed the double reduction to occur with only a slight excess of borohydride in very mild conditions. (C) 1997 Elsevier Science Ltd.
.alpha.-Fluorination of ketones. 1. Direct fluorination of pyruvic acid derivatives by using molecular fluorine
Fluorine-containing amino acids and their derivatives. 3. Stereoselective synthesis and unusual conformational features of threo- and erythro-3-fluorophenylalanine