作者:Tao Xie、Chaoying Zheng、Kuanwei Chen、Haibing He、Shuanhu Gao
DOI:10.1002/anie.201915787
日期:2020.3.9
convergent approach was developed to achieve the first asymmetric and scalable total synthesis of FD-594, a complex polycyclic xanthone natural product from Streptomyces sp. TA-0256, in a longest linear sequence (LLS) of 20 steps. The trans-9,10-dihydrophenanthrene-9,10-diol fragment (B-C-D ring) was generated through a new strategy involving asymmetric dihydroxylation followed by Cu-mediated oxidative
开发了一种高度收敛的方法来实现FD-594的首次不对称和可扩展的全合成,FD-594是链霉菌属的一种复杂的多环黄酮天然产物。TA-0256,以20步的最长线性序列(LLS)。反式9,10-二氢菲-9,10-二醇片段(BCD环)是通过一种新策略生成的,该策略涉及不对称二羟基化,然后进行Cu介导的氧化环化。后期的立体选择性糖基化将有角的六环骨架与一个β-连接的2,6-二脱氧三糖片段组装在一起。