Synthesis and antiproliferative activity of A-ring aromatised and conduritol-like steroidal compounds
作者:Dragana Milić、Tatjana Kop、Zorica Juranić、Miroslav J. Gašić、Bernard Tinant、Gabriella Pocsfalvi、Bogdan A. Šolaja
DOI:10.1016/j.steroids.2005.07.001
日期:2005.12
observed, followed by acid-catalyzed epoxy-ring opening and subsequent double bond migration, giving as a final product Delta(9,11)A-ring aromatized compounds. Synthesis of conduritol-like compounds and structure confirmation by X-ray crystallography of the precursor of steroidal conduritol is also described. In addition, the results of extensive antiproliferative screening against a panel of 60 cancer cell
报道了使用催化量的 TMSOTf 对甾体醌醇和环氧醌醇进行芳构化的简单方法。除了角 OH 的乙酰化外,酸催化 (TfOH) 二烯酮-苯酚重排发生了“对位”产物,或者在 4 位封闭的情况下,乙酰氧基 1,2-迁移导致“间位”的形成产品。使用环氧喹啉衍生物作为底物,观察到乙酰氧基消除,然后是酸催化的环氧开环和随后的双键迁移,最终产物 Delta(9,11)A 环芳构化化合物。还描述了类 conduritol 化合物的合成和通过 X 射线晶体学对甾体 conduritol 前体的结构确认。此外,