Synthesis and Antiproliferative Activity of Quinolone Nucleosides Against the Human Myelogenous Leukemia K‐562 Cell Line
作者:Lena Wicke、Joachim W. Engels、Roberto Gambari、Antoine M. Saab
DOI:10.1002/ardp.201300232
日期:2013.10
quinolone nucleosides linked to aniline or phenol via N or O heteroatom‐bridges presenting new compounds were synthesized by palladium‐catalyzed Buchwald–Hartwig cross‐coupling reactions. 6‐Bromoquinolone nucleoside precursors, being protected by either benzoyl or TBDMS protecting groups on the ribose moiety, were subjected to different Buchwald–Hartwig conditions as the key step. Defined deprotection
通过钯催化的 Buchwald-Hartwig 交叉偶联反应合成了一组通过 N 或 O 杂原子桥与苯胺或苯酚连接的 6-取代喹诺酮核苷,呈现出新的化合物。6-溴喹诺酮核苷前体被核糖部分上的苯甲酰基或 TBDMS 保护基团保护,作为关键步骤经受不同的 Buchwald-Hartwig 条件。确定的脱保护步骤以良好的产率获得在 3 位带有酯、酸或酰胺官能团的最终目标化合物。因此,通过收敛合成路线获得了一系列新型喹诺酮核苷衍生物。人类慢性粒细胞白血病 K562 细胞的生物学测试对其中两种细胞发挥有效的抗增殖活性,但不诱导分化。