Efficient and Stereoselective Access to the Polyol Fragment C9−C16 of Ansamycin Antibiotics
作者:Michel Obringer、Marie Barbarotto、Sabine Choppin、Françoise Colobert
DOI:10.1021/ol901144j
日期:2009.8.20
Efficient synthesis of the fragment C9−C16 bearing the anti,syn stereotriad of ansamycin antibiotics is described. Key steps for controlling the configuration of the three stereogenic centers involve a stereoselective Reformatsky-type reaction followed by a diastereoselective reduction of a β-ketosulfoxide.
该片段C9-C16轴承的有效合成反,顺式的安莎霉素抗生素stereotriad进行说明。控制三个立体生成中心构型的关键步骤包括立体选择性Reformatsky型反应,然后进行非对映选择性还原β-酮亚砜。