[EN] ANTIFUNGAL AGENTS AND USES THEREOF<br/>[FR] AGENTS ANTIFONGIQUES ET LEURS UTILISATIONS
申请人:UNIV MASSACHUSETTS
公开号:WO2014039515A2
公开(公告)日:2014-03-13
Antimicrobial agents, compositions that include the agent(s) and use(s) thereof are provided. Also disclosed are screening assays for identifying antimicrobial agents.
NMR-based investigations of acyl-functionalized piperazines concerning their conformational behavior in solution
their conformational behavior using temperature-dependent 1H NMR spectroscopy. All investigated piperazines occur as conformers at room temperature resulting from the restrictedrotation of the partial amide double bond. In the case of selected mono-N-benzoylated and unsymmetrically N,N′-substituted derivatives, the appearance of the 1H NMR spectrum was further shaped by the limited interconversion of
合成了选定的N-苯甲酰化哌嗪化合物,并使用温度依赖性1 H NMR 光谱研究其构象行为。由于部分酰胺双键的旋转受限,所有研究的哌嗪在室温下均以构象异构体形式出现。在选定的单-N-苯甲酰化和不对称N , N'-取代衍生物的情况下, 1 H NMR谱的外观通过哌嗪椅构象的有限互变进一步形成。因此,确定了两个不同的聚结点T C,并且计算出它们产生的活化能垒 Δ G ‡介于 56 至 80 kJ mol -1之间。在大多数情况下,酰胺位点的T C和 Δ G ‡似乎高于环反转的相应值。通过与哈米特常数的相关性分析了取代基对旋转和反转势垒的影响。所获得的结果在文献数据的背景下进行讨论和解释。与游离仲胺相比,在胺位点连接的额外芳基取代基导致旋转和反转势垒减少。为了支持和证明 NMR 分析的结果,获得了选定哌嗪的单晶并进行了 XRD 分析。为了强调这一结果,对两种潜在的 TGase 2 抑制剂进行了研究,显示出具有相似值的能量势垒。