作者:Mehdi Makrerougras、Romain Coffinier、Samuel Oger、Arnaud Chevalier、Cyrille Sabot、Xavier Franck
DOI:10.1021/acs.orglett.7b02053
日期:2017.8.4
The first synthesis of the proposed structures of chaetoviridins A 1–4 has been achieved in 10 steps by controlling the syn- or anti-aldol side chain. The angular lactone has been regioselectively introduced by condensation of a chiral dioxin-4-one to cazisochromene. Comparison of the NMR and circular dichroism data of the synthesized and reported natural products led to the complete reassignment and
chaetoviridins A的提出的结构的第一合成1 - 4已经通过控制在10个步骤实现顺式或-抗-aldol侧链。角内酯是通过手性二恶英-4-酮缩合至卡异异戊烯而选择性地引入的。合成和报告的天然产物的NMR和圆二色性数据的比较导致chaetoviridins的完全重新分配和重命名。