发现了由K 2 S 2 O 8和可见光光氧化还原催化介导的可见光照射串联氧化芳基迁移/羰基形成反应。所提出的转化提供了以伴随羰基形成的1,4-芳基转移的区域选择性方式从容易获得的均炔醇衍生物直接获得重要的α-丙二烯醛/酮衍生物。操作简单和底物范围广泛表明该方法在合成高功能α-丙二烯醛/酮衍生物方面具有巨大潜力。
Re-engineering of PIP3-antagonist triazole PITENIN's chemical scaffold: development of novel antifungal leads
作者:Sravani Pulya、Yadagiri Kommagalla、Duhita G. Sant、Shweta U. Jorwekar、Santosh G. Tupe、Mukund V. Deshpande、Chepuri V. Ramana
DOI:10.1039/c5ra25145a
日期:——
A novel 4-(1-phenyl-1-hydroxyethyl)-1-(o-hydroxyphenyl)-1H-1,2,3-triazole was designed by integrating the structural features of triazole PITENIN anticancer agents and the azole class of antifungal drugs. A two-step protocol comprising the Barbier propargylation and Cu-catalyzed azide–alkyne cycloaddition was established to synthesise a diverse set of compounds of this class. Their screening against
结合三唑PITENIN抗癌剂的结构特点和唑类抗真菌剂,设计了一种新型的4-(1-苯基-1-羟乙基)-1-(邻羟苯基)-1 H -1,2,3-三唑毒品。建立了包括Barbier炔丙基化和Cu催化的叠氮化物-炔烃环加成反应的两步方案,以合成各种此类化合物。他们对各种导致了几个潜在的抗真菌命中的识别和他们中的一些人真菌病原体筛查显示更好的抗真菌活性比对氟康唑光滑念珠菌,隐球菌,烟曲霉及黑曲霉。作用方式研究表明,它们的抗真菌活性是由于抑制羊毛甾醇14α-脱甲基酶(导致麦角固醇耗竭)或活性氧(ROS)产生。
Substituierte Propargylcarbinole und ihre hypnotische Wirkung
Thirty tertiary propargylic carbinols have been prepared by condensing propargyl bromide with ketones. Some of them showed better hypnotic activity than 3-methylpentyn-3-01. The best compound of the series was 1-chloro-2-chloromethylpent-4-yn-2-01 which proved to be a very effective hypnotic with a favourable therapeutic index.
One-Pot, Regioselective Synthesis of Homopropargyl Alcohols using Propargyl Bromide and Carbonyl Compound by the Mg-mediated Reaction under Solvent-free Conditions
in organic synthesis is the most important goal in “Green” chemistry. We report a simple, efficient and facile method for the addition of progargyl bromide to carbonyl compounds using Mg metal as a mediator undersolvent-freeconditions which could regioselectively generate homopropargyl alcohols efficiently in good to excellent yields. The procedure has advantages such as short reaction time, operationally
Barbier-type propargylation of carbonyl compounds with propargyl bromide has been achieved with reactive zinc–copper couple under solvent-free conditions. The reaction of aldehydes with propargyl bromide produced the unique homopropargyl alcohols in excellent yields at room temperature without the formation of homoallenyl alcohols. The ketones reacted with propargyl bromide to give the corresponding homopropargyl
Highly Selective Synthesis of Acetylenic Alcohols Promoted by Metallic Dysprosium in the Presence of Mercuric Chloride
作者:Zhiming Li、Yu Jia、Jingyao Zhou
DOI:10.1080/00397910008087415
日期:2000.7
Abstract Promoted by metallic dysprosium, carbonyl compounds react smoothly with propargyl bromide to afford the corresponding homopropargylic alcohols in good to excellent yields without observation of allenic alcohols. In addition, this reaction is regioselective and chemoselective.