Multifunctional multivalency: a focused library of polymeric cholera toxin antagonists
作者:Huu-Anh Tran、Pavel I. Kitov、Eugenia Paszkiewicz、Joanna M. Sadowska、David R. Bundle
DOI:10.1039/c0ob01089h
日期:——
the multivalent ligands is important for successful interaction with multimeric proteins. Polymer-based heterobifunctionalligands that contain pendant groups prearranged into heterodimers can be used to probe the active site and surrounding area of the receptor. Here we describe the synthesis and activities of a series of galactose conjugates on polyacrylamide and dextran. Conjugation of a second fragment
Alkynesdifunctionalization is a powerful strategy in organic synthesis that provides a convenient synthetic entry for internal alkenes. The main challenge in this field was considered to be the geometry control of the newly formed double bond (thermodynamically controlled or kinetically controlled). Herein, we report a novel procedure (through the cyclic compounds broken) to completely control the
[EN] 5-MEMBERED HETEROARYL COMPOUNDS CONTAINING A HYDROXAMATE MOIETY AND THEIR USE<br/>[FR] COMPOSÉS HÉTÉROARYLES À 5 CHAÎNONS CONTENANT UNE FRACTION HYDROXAMATE ET LEUR UTILISATION
申请人:UNIV LILLE
公开号:WO2020148403A1
公开(公告)日:2020-07-23
The present invention is directed to 5-membered heteroaryl compounds containing a hydroxamate moiety of Formula I, pharmaceutically acceptable salts or solvates thereof, and their use as sensitizers for chemotherapy of malignant tumors.
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。
5-MEMBERED HETEROARYL COMPOUNDS CONTAINING A HYDROXAMATE MOIETY AND THEIR USE