Stereoselective Synthesis and Evaluation of C6″-Substituted 5a-Carbasugar Analogues of SL0101 as Inhibitors of RSK1/2
作者:Mingzong Li、Yu Li、Katarzyna A. Ludwik、Zachary M. Sandusky、Deborah A. Lannigan、George A. O’Doherty
DOI:10.1021/acs.orglett.7b00945
日期:2017.5.5
A convergent synthesis of 5a-carbasugar analogues of the n-Pr-variant of SL0101 is described. The analogues were synthesized in an effort to find compounds with potent in vivo efficacy in the inhibition of p90 ribosomal s6 kinase (RSK1/2). The synthesis derived the desired C-4 L-rhamnose stereochemistry from quinic acid and used a highly selective cuprate addition, NaBH4 reduction, Mitsunobu inversion
描述了SL0101的n -Pr变体的5a-尿素类似物的会聚合成。为了寻找对p90核糖体s6激酶(RSK1 / 2)具有抑制作用的体内有效作用的化合物,合成了类似物。该合成从奎宁酸衍生出所需的C -4 L-鼠李糖立体化学,并使用高选择性的铜酸盐加成,NaBH 4还原,Mitsunobu转化和烯烃二羟基化来安装其余的立体化学。Pd催化的环糖基化立体选择性地将糖苷配基安装在异头位置。将该类似物评估为RSK1 / 2抑制剂,发现其活性提高了3至6倍。