Stereoselective Palladium-Catalyzed Approach to Vitamin D<sub>3</sub>
Derivatives in Protic Medium
作者:Diego Carballa、Rita Sigüeiro、Zaida Rodríguez-Docampo、Flavia Zacconi、Miguel A. Maestro、Antonio Mouriño
DOI:10.1002/chem.201705656
日期:2018.3.2
We describe an efficient convergent synthesis of vitamin D3 metabolites and analogues. The synthetic strategy relies on a tandem Pd‐catalyzed A‐ring closure and Suzuki–Miyaura coupling to the CD‐side chain component to set directly the vitamin D triene system under protic conditions. This strategy enables rapid access to vitamin D3 and 3‐epi‐vitamin D3 metabolites and analogues modified at the side
我们描述了维生素D 3代谢产物和类似物的有效收敛合成。合成策略依赖于串联的Pd催化的A环闭合和Suzuki-Miyaura与CD侧链成分的耦合,从而在质子条件下直接设置维生素D三烯系统。该策略可快速获取侧链修饰的维生素D 3和3-表-维生素D 3代谢物和类似物,以进行生物学评估以及结构和代谢研究。