has been achieved. The key steps include the intramolecular SNAr reaction for construction of the densely functionalized xanthone skeleton, the stereoselective lactone cleavage using a chiral nucleophile to induce the axial stereochemistry, and the SmI2‐mediatedpinacol cyclization for the stereocontrolled conversion of axially chiral biaryl dialdehyde into the corresponding trans diol.
已经实现了对FD‐594六环核的立体控制访问。关键步骤包括:分子内S N Ar反应,用于构建密集功能化的蒽酮骨架;使用手性亲核试剂进行立体选择性内酯裂解,以诱导轴向立体化学;以及SmI 2介导的频哪醇环化,用于轴向控制性转化轴向手性联芳基二醛转化为相应的反式 二醇。