已开发出一种收敛性和高产率的方法,用于不对称合成萝卜硫烷2和在亚磺酰基硫上被不同取代的四个类似物。合成的关键步骤是亚磺酸酯的非对映合成23 -小号小号,使用DAG(diacetone- d -glucofuranose)-methodology。通过确定它们激活细胞保护性转录因子Nrf2的能力,研究了这些化合物作为II期解毒酶诱导剂的生物活性。
Application of Cp<sub>2</sub>TiCl-Promoted Radical-Induced Cyclization: An Expeditious Access to [<i>a</i>]-Annelated Indoles
作者:Hina P. A. Khan、Tushar Kanti Chakraborty
DOI:10.1021/acs.joc.0c00817
日期:2020.6.19
An efficient and novel route for assembling pyrrolo/piperido[1,2-a]indoles is portrayed involving a radical-mediated reductive epoxide opening reaction of N-tethered epoxy-indoles that trigger facile intramolecular cyclization followed by an oxidative quenching step. Capitalizing on the operational simplicity of the method involving just two steps and use of an efficient C–C bond-forming reaction,
描绘了一种高效且新颖的组装吡咯并/哌啶并[1,2- a ]吲哚的方法,该方法涉及自由基介导的N-束缚的环氧吲哚的还原性环氧开环反应,该反应触发容易的分子内环化,然后进行氧化猝灭步骤。利用仅涉及两个步骤的方法的操作简便性,并利用有效的C–C键形成反应,该基于自由基的协议使具有重要功能和结构多样性的一类重要的N稠合吲哚衍生物得以模块化组装。
Enantiopure Sulforaphane Analogues with Various Substituents at the Sulfinyl Sulfur: Asymmetric Synthesis and Biological Activities
A convergent and high-yielding approach for the asymmetricsynthesis of sulforaphane 2 and four analogues differently substituted at the sulfinyl sulfur has been developed. The key step of the synthesis is the diastereoselectivesynthesis of sulfinate ester 23-SS, using the DAG (diacetone-d-glucofuranose)-methodology. The biological activity of these compounds as inductors of phase II detoxifying enzyme
已开发出一种收敛性和高产率的方法,用于不对称合成萝卜硫烷2和在亚磺酰基硫上被不同取代的四个类似物。合成的关键步骤是亚磺酸酯的非对映合成23 -小号小号,使用DAG(diacetone- d -glucofuranose)-methodology。通过确定它们激活细胞保护性转录因子Nrf2的能力,研究了这些化合物作为II期解毒酶诱导剂的生物活性。
4-Methanesulfonyloxybutanol: Hydrolysis of Busulfan