anti-inflammatory activity. The presence of a highly dense oxygen functionality and a polycyclic ring system presents significant synthetic challenges. Herein, we report an efficient strategy for the construction of the tetracyclic core system of berkeleyacetal. Our synthetic strategy features two cycloadditions ([4+2] and [5+2]) to forge the tetracyclic core and Achmatowicz rearrangement for the preparation
Berkeleyacetals 是结构复杂的
天然产物,具有强大的抗炎活性。高密度氧官能团和多环系统的存在提出了重大的合成挑战。在此,我们报告了一种构建伯克利
缩醛四环核心系统的有效策略。我们的合成策略具有两个环加成([4+2] 和 [5+2])以形成四环核心和 Achmatowicz 重排,以制备含有 B 和 E 环的环化底物。