The stereochemistry of somereactions at C-16 in (−)-kaurene is clarified.
澄清了(-)-贝壳杉烯中C-16处某些反应的立体化学。
Reductive Radical Annulation Strategy toward Bicyclo[3.2.1]octanes: Synthesis of <i>ent</i>-Kaurane and Beyerane Diterpenoids
作者:Junming Zhuo、Chunlin Zhu、Jinbao Wu、Zijian Li、Chao Li
DOI:10.1021/jacs.1c11623
日期:2022.1.12
Here we report a general [3 + 2] radical annulation that allows the facile construction of bicyclo[3.2.1]octane motifs in ent-kaurane- and beyerane-type diterpenoids. This radical annulation is difficult to control but was realized by harnessing an unprecedented and counterintuitive effect of TEMPO. Eleven natural products with a wide array of oxidation states are easily prepared, demonstrating the