Synthesis of 6,19-cyclopregnanes. Constrained analogues of steroid hormones
作者:Pablo H. Di Chenna、Adriana S. Veleiro、Juan M. Sonego、Nora R. Ceballos、M. Teresa Garland、Ricardo F. Baggio、Gerardo Burton
DOI:10.1039/b706828j
日期:——
A procedure for the synthesis of 6,19-cyclopregnanes is described involving an intramolecular alkylation reaction of Delta(4)-3-keto steroids with a 19-mesylate in the presence of KOH in isopropanol. Three 6,19-cyclopregnanes were prepared (4, 5 ,9); in the rat, 6,19-cycloprogesterone (4) and its 21-hydroxy derivative 5 displaced [3H]-dexamethasone from glucocorticoid receptors, the former compound
描述了合成6,19-环孕烷的方法,该方法涉及在异丙醇中存在KOH的情况下,Delta(4)-3-酮类固醇与19-甲磺酸酯的分子内烷基化反应。制备了三个6,19-环孕烷(4,5,9); 在大鼠中,6,19-环孕酮(4)及其21-羟基衍生物5从糖皮质激素受体中置换了[3H]-地塞米松,前一种化合物的活性更高。两种化合物均未与[3H]-醛固酮竞争肾上腺皮质激素受体竞争,也未与[3H] -R5020竞争子宫孕激素受体竞争。