Novel preparation of substituted oxazolines condensed to d-ring of estrane skeleton and characterization of their antiproliferative properties
作者:Anita Kiss、Rebeka Jójárt、Erzsébet Mernyák、Sándor Bartha、Renáta Minorics、István Zupkó、Gyula Schneider
DOI:10.1016/j.steroids.2021.108911
日期:2021.12
A simple and efficient synthesis of novel estrone 16α,17α-oxazoline derivatives substituted at the D ring (compounds 6a-g) is described. The reduction of 16α-azido-3-methoxyestra-1,3,5-trien-17-one (1) in methanol in the presence of CeCl3 under the condition of the Luche reaction produced two epimeric azido alcohol (16α-azido-17α-hydroxy and 16α-azido-17β-hydroxy) derivatives of estra-1,3,5(10)-triene-3-methyl
描述了在 D 环上取代的新型雌酮 16α,17α-恶唑啉衍生物(化合物6a-g)的简单有效合成。16α-azido-3-methoxyestra-1,3,5-trien-17-one ( 1 ) 在甲醇中在 CeCl 3存在下在 Luche 反应条件下还原生成两种差向异构叠氮醇 (16α-azido- estra-1,3,5(10)-triene-3-methyl ether(化合物2和3)的 17α-羟基和 16α-叠氮基-17β-羟基)衍生物,产率为 90% 和 7.6%。空间上不受阻碍的 16α-azido-17α-hydroxy-estra-1,3,5(10)-triene-3-methyl ether ( 2 ) 与一系列苯甲醛在 Schmidt 重排条件下反应得到d-环取代的雌酮 16α,17α-恶唑啉衍生物6a-g。化合物1、2、3、6a-g的体外抗增殖活性也通过 MTT 测定法对一组人类癌细胞系