Synthesis and Cytostatic and Antiviral Activities of 2′-Deoxy-2′,2′-difluororibo- and 2′-Deoxy-2′-fluororibonucleosides Derived from 7-(Het)aryl-7-deazaadenines
作者:Pavla Perlíková、Ludovic Eberlin、Petra Ménová、Veronika Raindlová、Lenka Slavětínská、Eva Tloušťová、Gina Bahador、Yu-Jen Lee、Michal Hocek
DOI:10.1002/cmdc.201300047
日期:2013.5
A series of sugar‐modified derivatives of cytostatic 7‐heteroaryl‐7‐deazaadenosines (2′‐deoxy‐2′‐fluororibo‐ and 2′‐deoxy‐2′,2′‐difluororibonucleosides) bearing an aryl or heteroaryl group at position 7 was prepared and screened for biological activity. The difluororibonucleosides were prepared by non‐ stereoselective glycosidation of 6‐chloro‐7‐deazapurine with benzoyl‐protected 2‐deoxy‐2,2‐difluo
一系列在7位带有芳基或杂芳基的细胞生长抑制7-杂芳基-7-去氮杂腺苷的糖修饰衍生物(2'-脱氧-2'-氟核糖核苷和2'-脱氧2',2'-二氟核糖核苷)制备并筛选生物活性。通过用苯甲酰基保护的2-脱氧-2,2-二氟-D-赤藓基-戊呋喃糖基-1-甲磺酸酯的6-立体-7-去氮杂嘌呤非立体选择性糖基化,然后胺化和Suzuki水溶液交联来制备二氟核糖核苷。与(杂)芳基硼酸。氟代核糖衍生物是通过相应7-碘-7-脱氮杂腺嘌呤2'-脱氧-2'-氟核糖核苷20与(杂)芳基硼酸的钯水溶液催化交叉偶联反应制得的。关键中间体20由相应的阿拉伯糖苷按六步顺序制备,方法是用酸不稳定基团选择性保护3'和5'-羟基,然后进行立体选择性S N 2氟化和脱保护。一些标题的核苷和7-碘-7-去氮杂腺嘌呤中间体显示出微摩尔的抑制细胞生长活性或抗HCV活性。活性最高的是7-碘和7-乙炔基衍生物。发现相应的2'-脱氧-2',2'-二氟核糖核苷5'-