Novel Synthetic Approach to 19-<i>nor</i>-1α,25-Dihydroxyvitamin D<sub>3</sub> and Its Derivatives by Suzuki−Miyaura Coupling in Solution and on Solid Support
作者:Takeshi Hanazawa、Takeshi Wada、Tomoko Masuda、Sentaro Okamoto、Fumie Sato
DOI:10.1021/ol016908r
日期:2001.11.1
[GRAPHICS]19-nor-1 alpha ,25-Dihydroxyvitamin D-3 was synthesized by the Suzuki-Miyaura coupling of the A-ring intermediate 3, which was efficiently prepared from readily available 5-(tert butyldimethylsilyl)oxycyclohex-2-enone (5), with the boronate compound of the C,D-ring portion. The method could be applied to a solid-phase synthesis to prepare the des-C,D derivatives of 19-nor-1 alpha ,25-dihydroxyvitamin D-3.