A Versatile Room-Temperature Route to Di- and Trisubstituted Allenes Using Flow-Generated Diazo Compounds
作者:Jian-Siang Poh、Duc N. Tran、Claudio Battilocchio、Joel M. Hawkins、Steven V. Ley
DOI:10.1002/anie.201501538
日期:2015.6.26
A copper‐catalyzed coupling reaction between flow‐generated unstabilized diazocompounds and terminal alkynes provides di‐ and trisubstitutedallenes. This extremely mild and rapid transformation is highly tolerant of several functional groups.
New Polymer-Supported Mono- and Bis-<i>Cinchona</i>Alkaloid Derivatives: Synthesis and Use in Asymmetric Organocatalyzed Reactions
作者:Ravindra P. Jumde、Anila Di Pietro、Antonella Manariti、Alessandro Mandoli
DOI:10.1002/asia.201402924
日期:2015.2
Chinchona alkaloids and their application in the asymmetric dimerization of ketenes is reported. Six different immobilized derivatives, consisting of three dimeric and two monomeric 9‐O ethers, were prepared by “click” anchoring of soluble alkaloid precursors on to azidomethyl resins. The resulting insoluble polymer‐bound (IPB) organocatalysts were employed for promoting the dimerization of in‐situ
[EN] 2',3'-DIDEOXY-5-FLUOROURIDINE DERIVATIVES, A PROCESS FOR THE MANUFACTURE THEREOF AND APPLICATION THEREOF<br/>[FR] DÉRIVÉS DE 2',3'-DIDÉSOXY-5-FLUOROURIDINE, UN PROCÉDÉ DE FABRICATION DE CEUX-CI ET LEUR APPLICATION
申请人:UNIV ADAM MICKIEWICZ
公开号:WO2015050467A1
公开(公告)日:2015-04-09
The subject matter of the invention is novel 2',3'-dideoxy-5-fluorouridine derivatives of general formula 1. wherein: R1 denotes cinchona alkaloid fragment with defined absolute configuration at C-8 and C-9 atoms. In the second aspect, the subject matter of the invention is a process for the manufacture of 2',3'-dideoxy-5-fluorouridine derivatives of general formula 1. In the third aspect, the subject matter of the invention is an application of 2',3'-dideoxy-5-fluorouridine derivatives of general formula1 of the invention in the anticancer treatment of breast cancer, cervical cancer and hepatic cancer.
Synthesis of 3′-azido-3′-deoxythymidine (AZT)—Cinchona alkaloid conjugates via click chemistry: Toward novel fluorescent markers and cytostatic agents
作者:Dagmara Baraniak、Karol Kacprzak、Lech Celewicz
DOI:10.1016/j.bmcl.2010.11.127
日期:2011.1
Novel nucleoside–Cinchona alkaloid conjugates were synthesized using ‘click’ chemistry approach based on the copper(I) catalyzed Huisgen azide–alkyne cycloaddition. Two series of conjugates were prepared employing 3′-azido-3′-deoxythymidine (AZT) as the azide component and the four 10,11-didehydro Cinchonaalkaloids as well as their 9-O-propargyl ethers as the alkyne components. All obtained conjugates
The concept of selenium-nitrogen exchange (SeNEx) click chemistry is put forward based on the excellent performance of the reaction between benzoselenazolones and terminal alkynes. The reaction exhibits modularity, robustness, mild reaction conditions, and fast kinetics (k2≥14.43 M−1 s−1), and its broad applicability is demonstrated with examples of on-plate nanomole-scale parallel synthesis, DNA-encoded
基于苯并硒唑啉酮与末端炔烃反应的优异性能,提出了硒氮交换(SeNEx)点击化学的概念。该反应表现出模块化、鲁棒性、反应条件温和、动力学快( k 2 ≥14.43 M -1 s -1 ),并通过板内纳摩尔级平行合成、DNA编码文库合成等实例证明了其广泛的适用性,以及肽和蛋白质修饰。