Total synthesis of (–)-brazilane via a lipase-catalyzed desymmetrisation reaction
作者:Xiaofeng Guo、Zhiwei Xue、Dongdong Xu、Qidong Tu、Honghong Chang、Xihua Yang、Shuangping Huang
DOI:10.1080/14786419.2021.1922403
日期:2022.10.18
Herein, we described the asymmetric total synthesis of (–)-brazilane, an optically active natural product. The key steps of this synthetic approach are a lipase-catalyzed desymmetrisation reaction of a prochiral diol using vinyl acetate to prepare a chiral primary alcohol and a trifluoroacetic acid-catalyzed one pot intramolecular tandem Prins/Friedel-Crafts reaction used to construct the cis-fused chromane
摘要 在此,我们描述了 (-)-巴西兰的不对称全合成,这是一种旋光天然产物。这种合成方法的关键步骤是脂肪酶催化的前手性二醇的去对称化反应,使用乙酸乙烯酯制备手性伯醇,以及三氟乙酸催化的一锅分子内串联 Prins/Friedel-Crafts 反应用于构建顺式稠合的色烷和茚满骨架。