通过一条通用途径合成了带有连接到C-18的侧链的1α,25-(OH)2 -D 3激素的新类似物,其中的关键步骤是C-对18-甲基的远程自由基诱导的官能化8β-羟基和通过在C-18-醛上的Wittig反应引入侧链。新的类似物的三烯系统是通过收敛的Lythgoe-Hoffmann la Roche方法构建的,该方法涉及氧化膦(环A片段)与酮(上部片段)的反应。
通过一条通用途径合成了带有连接到C-18的侧链的1α,25-(OH)2 -D 3激素的新类似物,其中的关键步骤是C-对18-甲基的远程自由基诱导的官能化8β-羟基和通过在C-18-醛上的Wittig反应引入侧链。新的类似物的三烯系统是通过收敛的Lythgoe-Hoffmann la Roche方法构建的,该方法涉及氧化膦(环A片段)与酮(上部片段)的反应。
Novel 1α,25-Dihydroxyvitamin D<sub>3</sub> Analogues with the Side Chain at C12
作者:Xosé C. González-Avión、Antonio Mouriño、Natacha Rochel、Dino Moras
DOI:10.1021/jm049016g
日期:2006.3.1
The plethora of actions of 1 alpha,25(OH)(2)D-3 in various systems suggested wide clinical applications of vitamin D nuclear receptor (VDR) ligands in treatments of inflammation, dermatological indication, osteoporosis, cancers, and autoimmune diseases. More than 3000 vitamin D analogues have been synthesized in order to reduce the calcemic side effects while maintaining the transactivation potency of the natural ligand. In light of the crystal structures of the vitamin D nuclear receptor (VDR), novel analogues of the hormone 1 alpha,25(OH)2D3 with side chains attached to C-12 were synthesized via the convergent Wittig-Horner approach. Among the compounds studied, the analogue 2b showed the highest binding affinity for VDR and was the most potent at inducing VDR transcriptional activity in a transient transfection assay (20% of the transactivation activity of the natural ligand).