5-Alkynyl-2′-deoxyuridines: Chromatography-free synthesis and cytotoxicity evaluation against human breast cancer cells
作者:Srinivasarao Meneni、Ingo Ott、Craig D. Sergeant、Adam Sniady、Ronald Gust、Roman Dembinski
DOI:10.1016/j.bmc.2007.01.048
日期:2007.4
Starting with 5-iodo-2'-deoxyuridine, a series of 5-alkynyl-2'-deoxyuridines (with n-propyl, cyclopropyl, 1-hydroxycyclohexyl, p-tolyl, p-tert-butylphenyl, p-pentylphenyl, and trimethylsilyl alkyne substituents) have been synthesized via the palladium-catalyzed (Sonogashira) coupling reaction followed by a simplified isolation protocol (76-94% yield). The cytotoxic activity of modified nucleosides
以5-碘-2'-脱氧尿苷为起始,一系列5-炔基-2'-脱氧尿苷(含正丙基、环丙基、1-羟基环己基、对甲苯基、对叔丁基苯基、对戊基苯基和三甲基甲硅烷基)炔烃取代基)通过钯催化(Sonogashira)偶联反应合成,然后采用简化的分离方案(产率 76-94%)。修饰核苷对 MCF-7 和 MDA-MB-231 人乳腺癌细胞的细胞毒活性已在体外测定。5-乙炔基-2'-脱氧尿苷是该系列中唯一含有末端乙炔的核苷,是最有效的抑制剂,MCF-7 的 IC(50) (microM) 为 0.4+/-0.3,MDA 为 4.4+/-0.4 -MB-231。