Synthesis and structure–activity studies of schweinfurthin B analogs: Evidence for the importance of a D-ring hydrogen bond donor in expression of differential cytotoxicity
作者:Jeffrey D. Neighbors、Maya S. Salnikova、John A. Beutler、David F. Wiemer
DOI:10.1016/j.bmc.2005.10.025
日期:2006.3
The synthesis and biological evaluation of several enantioenriched schweinfurthin B analogs were undertaken to develop structure-activity relationships and guide design of probes for their putative molecular target. The desired stilbenes contain a common left-half hexahydroxanthene ring system and an aromatic right-half with varied substituents. The synthesis involves penultimate Horner-Wadsworth-Emmons
进行了几种对映体富集的Schweinfurthin B类似物的合成和生物学评估,以建立结构-活性关系并指导探针设计用于其推定的分子靶标。所需的对苯二酚含有常见的左半六氢氧杂蒽环系统和具有不同取代基的芳族右半。合成过程涉及将几种右半膦酸酯之一与包含3-脱氧schweinfurthin B左半醛的醛进行倒数第二次的Horner-Wadsworth-Emmons偶联。制备所需的膦酸酯和相应的对苯二甲酸酯,以及它们的细胞毒性图谱这些新化合物在美国国家癌症研究所的60细胞系抗癌筛选中进行了描述。这些类似物中的几种显示出与天然产物良好相关的细胞毒性模式,并且在各种细胞系中的活性差异约为10(3)。总之,这些测定结果表明该系统的芳族D-环上至少一个游离酚基对于区别细胞毒性的重要性。