Mechanistic analysis of aliphatic β-lactones in Vibrio harveyi reveals a quorum sensing independent mode of action
作者:Weining Zhao、Nicola Lorenz、Kirsten Jung、Stephan A. Sieber
DOI:10.1039/c6cc05807h
日期:——
β-Lactone analogs of autoinducers potently inhibitVibrio harveyibioluminescence using a quorum sensing independent mechanism interfering with fatty acid biosynthesis.
Monomers and their polymers derived from saturated fatty acid methyl esters and dimethyl carbonate
作者:Nicolai Kolb、Michael A. R. Meier
DOI:10.1039/c2gc35793c
日期:——
In this study, we exploit the alpha-acidity of saturated fatty acid methyl esters (FAMEs) for the direct conversion of these renewable raw materials to malonate derivatives. After deprotonation with sodium hydride in dimethyl carbonate (DMC) as reactive solvent, the ester enolates react with DMC to give the desired products with up to 80% isolated yield. These malonate derivatives, bearing a long aliphatic
Tris- or neopentyl glycol-based amphiphiles and uses thereof
申请人:Industry-University Cooperation Foundation Hanyang University Erica Campus
公开号:US10781229B2
公开(公告)日:2020-09-22
The present invention relates to a TRIS- or neopentyl glycol-based amphipathic compound, a method of preparing the same, and a method of extracting, solubilizing, stabilizing, or crystallizing a membrane protein using the same. By using the TRIS- or neopentyl glycol-based compound according to the present invention, a superior membrane protein solubilization effect is exhibited, a membrane protein can be stably stored for a long time in an aqueous solution, and the structural fluidity of the membrane protein can be excellently maintained. Accordingly, the TRIS- or neopentyl glycol-based compound can be utilized in analyzing functions and structures of membrane proteins. Membrane protein structure and function analysis is currently one of the most attractive fields of research in biology and chemistry. Since more than half of the new drugs under development target membrane proteins, the compound can be applied to membrane protein structure research closely related to drug discovery.
本发明涉及一种基于TRIS或新戊二醇的两性化合物、其制备方法以及使用其提取、增溶、稳定或结晶膜蛋白的方法。通过使用本发明的 TRIS 或新戊二醇基化合物,可以显示出卓越的膜蛋白增溶效果,膜蛋白可以在水溶液中长期稳定储存,膜蛋白的结构流动性也可以得到很好的保持。因此,以 TRIS 或新戊二醇为基础的化合物可用于分析膜蛋白的功能和结构。膜蛋白结构和功能分析是目前生物学和化学领域最具吸引力的研究领域之一。由于半数以上正在开发的新药都以膜蛋白为靶标,因此该化合物可应用于与药物开发密切相关的膜蛋白结构研究。
Intramolecular Cooperative Reactions of 1,2-Bis(diazoketone)s. The First Syntheses of trans-Hydro-1H-2-inden-1-ones
The intramolecular cooperative reactions of 1,2-bis(diazoketone)s initiated by the Wolff rearrangement of alpha-diazoketones have been investigated. Under thermal conditions, 1,2-bis(diazoketone)s are efficiently transformed into 2-cyclopenten-1-one derivatives with complete stereospecificity. Thus, a most extraordinary result is reported, that trans-hydro-2-inden-1-ones (1-3) were synthesized for the first time from trans-1,2-bis(diazoketone)s (5, 11, and 12), respectively. The unprecedented trans-hydroindenone structure was confirmed by X-ray analysis of 3 as well as H-1 NMR analysis and was supported by ab initio molecular orbital calculations. The same reactions were also carried out under photochemical conditions and were applied to 1,3-bis(diazoketone)s, giving 2-cyclohexen-1-one derivatives.