作者:Anusueya Kumari、Muthiah Suresh、Preet Prakash、Prashant Kumar Sinha、Partha Ghosh、Raj Bahadur Singh
DOI:10.1016/j.tetlet.2023.154363
日期:2023.3
Total synthesis of phenolic sesquiterpene pterosin M has been achieved from known indanone via bromination, Suzuki-Miyaura cross coupling, oxone mediated epoxidation, Meinwald rearrangement, BBr3 mediated demethylation and decarboxylation in one go and chemoselective reduction as the key steps. We also synthesized the known indanone via a different route comprising of Knoevenagel condensation of aldehyde
以已知的茚满酮为原料,通过溴化、Suzuki-Miyaura交叉偶联、oxone介导的环氧化、Meinwald重排、BBr 3介导的脱甲基和脱羧以及化学选择性还原等关键步骤,实现了酚类倍半萜蝶呤M的全合成。我们还通过不同的路线合成了已知的茚满酮,包括醛衍生物与 Meldrum 酸的 Knoevenagel 缩合、随后的还原、甲基化、PPA 介导的分子内 Friedel-Crafts 酰化和 β-酮酯形成。pterosin M的羟甲基化反应完成了onitisin的第一次全合成。