batzelline A were accomplished. A fully substituted common indole intermediate bearing C-2 methylthio and C-5 chloro groups was constructed via ring expansion of benzocyclobutenone oxime sulfonate with NaSMe and a benzyne-mediated cyclization/functionalization sequence as the key steps. The total synthesis of isobatzelline B was achieved via formation of the iminoquinone structure by the redox-neutral acid-promoted
完成了
异戊二烯系A / B和batzellineline A的总合成。
苯并环丁烯酮肟磺酸盐与NaSMe的扩环反应和苯并介导的环化/官能化序列为关键步骤,构建了具有C-2甲
硫基和C-5
氯基的完全取代的常见
吲哚中间体。通过常见的
吲哚中间体的氧化还原-中性酸促进的C-5原脱
氯反应形成亚
氨基醌结构,即可实现异蝙蝠zel碱B的总合成。通过分别使用MnO 2或Mn(OAc)3氧化常见的
吲哚中间体,以异种方式完成了异batzellineline A和batzellineline A的总合成。