Highly active copper-catalysts for azide-alkynecycloaddition
作者:Zsombor Gonda、Zoltán Novák
DOI:10.1039/b920790m
日期:——
Bis-triphenylphosphano complexes of copper(I)-carboxylates serve as efficient catalysts for azide-alkyne cycloaddition. The triazole formation takes place straightforwardly at ambient temperature providing a wide variety of products with good yields in the presence of 0.005–0.05% catalyst.
Homocamptothecin is emerging as an important topoisomerase I inhibitor originating in natural product camptothecin. We report the modifications and SAR of homocamptothecin on position C10 to develop potent topoisomerase I inhibitors for anticancer drug discovery. Based on click chemistry, twenty‐one 1,2,3‐triazole‐substituted homocamptothecin derivatives were readily synthesized in two steps. For A549
喜树碱是一种重要的拓扑异构酶I抑制剂,起源于喜树碱天然产物。我们报道了C10位置上喜树碱的修饰和SAR,以开发有效的拓扑异构酶I抑制剂用于抗癌药物的发现。根据点击化学,可以很容易地通过两个步骤合成二十一种1,2,3-三唑取代的同型喜树碱衍生物。对于A549,环烷基和烷基取代的化合物6j,6l和6o表现出高度的抗增殖抑制活性,IC 50值分别为30、30和50 n m。此外,环丙基6j的Topo I抑制活性高于20(S)喜树碱,表明适合进一步药物开发。
[EN] BOLA-AMPHIPHILIC COMPOUNDS AND THEIR USES FOR BIOMEDICAL APPLICATIONS<br/>[FR] COMPOSÉS BOLA-AMPHIPHILES ET LEURS UTILISATIONS POUR DES APPLICATIONS BIOMÉDICALES
申请人:UNIV BORDEAUX
公开号:WO2016055493A1
公开(公告)日:2016-04-14
The invention relates to bola-amphiphilic compounds and their uses for biomedical application. The invention particularly relates to the use of bola-amphiphilic compounds for providing low molecular weight gels (LMWG), useful, in particular, as culture media for animal or human cells, or as biocompatible material for biomedical applications.
The highly enantioselective copper-catalyzed propargylic amination of propargylic esters with amine hydrochloride salts has been realized for the first time using copper salts with chiral N,N,P-ligands. This method features a broad substrate scope and wide functional group tolerance, generating propargylic amines in good to excellent yields with high enantioselectivities (up to 99% ee). The utility
The Sequential Sonogashira-Click Reaction: A Versatile Route to 4-Aryl-1,2,3-triazoles
作者:Zoltán Novák、Krisztián Lőrincz、Péter Kele
DOI:10.1055/s-0029-1216985
日期:2009.10
Aryl halides can be easily transformed in a one-pot procedure into 4-aryl-1,2,3-triazoles with palladium/copper-catalyzed Sonogashira-click reaction sequence, using trimethylsilylacetylene as acetylene surrogate.