Diastereoselective construction of tetracyclic chromanes <i>via</i> a triply annulative strategy
作者:Zhishun Tang、Linghong Chen、Pengxuan Yin、Lu Yang、Zhichuan Shi、Zhigang Zhao、Ling Ye、Xuefeng Li
DOI:10.1039/d2ob00326k
日期:——
reaction has been established to construct tetracyclic chromanes in a diastereoselective fashion (≥5 : 1 dr). The polycyclic products were generated in 50–78% isolated yields under mild and metal-free conditions. Five reactive sites of enolate-tethered divinyl ketones were sequentially utilized to form four C–C bonds in a one-pot operation, leading to a construction of three new rings. Up to six consecutive