d ligands (MTDL) design. New propargylamine substituted derivatives combined with salicylic and cinnamic scaffolds were designed and synthesized as potentialcholinesterases and monoamine oxidases (MAOs) inhibitors. They were evaluated in vitro for inhibition of acetyl- (AChE) and butyrylcholinesterase (BuChE) using Ellman’s method. All the compounds act as dual inhibitors. Most of the derivatives
A bimetallic tandem catalysis-enabled enantioselective cycloisomerization/carbonyl–enereaction was developed. The reaction proceeded well with a broad range of N-propargylamides and acylsilanes, affording the target chiral 5-oxazoylmethyl α-silyl alcohols in up to 95% yield and 99% ee under mild conditions. Importantly, this facile protocol was available for the late-stage modification of several
开发了一种双金属串联催化的对映选择性环异构化/羰基-烯反应。该反应与多种N-炔丙基酰胺和酰基硅烷一起顺利进行,在温和条件下以高达 95% 的产率和 99% ee 得到目标手性 5-恶唑酰基甲基 α-硅醇。重要的是,这种简便的方案可用于几种生物活性分子的后期修饰。基于机理研究和控制实验,提出了可能的催化循环和过渡态来阐明反应过程和对映诱导。