Stereodiverse Iterative Synthesis of 1,3-Polyol Arrays through Asymmetric Catalytic Hydrogenation. Formal Total Synthesis of (−)-Cyanolide A
作者:Wen Che、Yu-Zhen Li、Jin-Chi Liu、Shou-Fei Zhu、Jian-Hua Xie、Qi-Lin Zhou
DOI:10.1021/acs.orglett.9b00650
日期:2019.4.5
An iterative protocol was developed for highly diastereo- and enantioselective construction of high-order 1,3-polyols via iridium-catalyzed asymmetric hydrogenation of β-alkyl-β-keto esters. The protocol involves four operations—asymmetric hydrogenation, hydroxy protection, ester hydrolysis, and C-acylation—and the catalyst loading can be as low as 0.005 mol %. The configurations of all stereogenic
通过铱催化β-烷基-β-酮酯的不对称氢化,开发了一种用于高非对映和对映选择性构建高阶1,3-多元醇的迭代方案。该方案涉及四个操作-不对称氢化,羟基保护,酯水解和C-酰化-且催化剂负载量可低至0.005 mol%。1,3-多元醇的所有立体异构中心的构型均受催化剂控制。通过使用该协议,可以实现高非对映选择性和对映选择性的聚酮氰腈A的正式全合成。