Efficient Convergent Synthesis of 1α,25-Dihydroxyvitamin D<sub>3</sub> and Its Analogues by Suzuki−Miyaura Coupling
作者:Takeshi Hanazawa、Akiko Koyama、Takeshi Wada、Eiko Morishige、Sentaro Okamoto、Fumie Sato
DOI:10.1021/ol0274007
日期:2003.2.1
[reaction: see text] 1alpha,25-Dihydroxyvitamin D(3) was synthesized by the Suzuki-Miyaura coupling of the A-ring intermediate 1, which was efficiently prepared from readily available 1,7-enyne 2, with the corresponding boronate compound of the C,D-ring portion. The method was applied to prepare des-C,D analogues of 1alpha,25-dihydroxyvitamin D(3).
[反应:请参见文本]通过A环中间体1的Suzuki-Miyaura偶联合成了1alpha,25-二羟基维生素D(3),该中间体是从容易获得的1,7-烯2与相应的硼酸酯化合物有效制备的C,D环部分。该方法适用于制备1α,25-二羟基维生素D(3)的des-C,D类似物。