New 2-Alkylidene 1α,25-Dihydroxy-19-norvitamin D<sub>3</sub> Analogues of High Intestinal Activity: Synthesis and Biological Evaluation of 2-(3‘-Alkoxypropylidene) and 2-(3‘-Hydroxypropylidene) Derivatives
作者:Agnieszka Glebocka、Rafal R. Sicinski、Lori A. Plum、Margaret Clagett-Dame、Hector F. DeLuca
DOI:10.1021/jm051082a
日期:2006.5.1
elaborated that comprised Julia coupling of sulfones 39a and 39b with the cyclohexanone derivative 23. The binding of all synthesized vitamins to the full-length rat recombinant vitamin D receptor (VDR) is either similar to or within one log of 1alpha,25(OH)(2)D(3). The in vivo tests have revealed that the calcemic activity of all analogues in the E-series (5a, 6a, 6b) is considerably higher than that of
在寻找具有潜在治疗价值的新型维生素D化合物,1α,25-二羟基-2-(3'-羟丙叉基)-19-正维生素D(3)的E-和Z-异构体及其衍生物有效地制备了在C-2具有3'-(甲氧基甲氧基)亚丙基取代基的前一化合物。所有维生素均以收敛合成方式获得,从(-)-奎尼酸和受保护的25-羟基Grundmann酮开始。将奎宁酸转化为酮内酯11,并通过Wittig反应连接一个取代的羟丙基亚基,生成成对的异构体化合物12、13和14、15。然后,将这些烯烃产物转化为氧化膦32-34,将其氧化为Lythgoe型Wittig-Horner与C,D片段35a和35b耦合。还详细说明了另一种方法,包括砜39a和39b与环己酮衍生物23的朱莉娅偶联。所有合成维生素与全长大鼠重组维生素D受体(VDR)的结合与1alpha相似或在1log内,25(OH)(2)D(3)。体内试验表明,E系列(5a,6a,6b)中所有类似物的钙化活性均明显高于天然激素。