Total Synthesis and Determination of the Absolute Configuration of Berkeleylactone I
作者:Sudip Mandal、Dora Mahananda、Dileep Paladugu、Barla Thirupathi
DOI:10.1021/acs.joc.4c00178
日期:2024.3.15
Herein, we report the first total synthesis of berkeleylactone I and its 12S diastereomer. Consequently, this chemical synthesis allowed us to establish the unknown absolute stereochemistry at the C-12 center as 12R, which was unidentified by the isolation group. This synthetic approach includes several critical reactions, such as the Sharpless asymmetric dihydroxylation, Baran’s Ni-catalyzed alkyl–alkyl
在此,我们报道了伯克内酯 I 及其 12 S非对映体的首次全合成。因此,这种化学合成使我们能够在 C-12 中心建立未知的绝对立体化学,即 12 R ,这是分离组无法识别的。该合成方法包括几个关键反应,例如 Sharpless 不对称二羟基化、Baran 镍催化的烷基-烷基交叉偶联反应、Brown 烯丙基化、Mitsunobu 反应和闭环复分解反应等关键步骤。