Synthesis of helianane, an unusual marine sesquiterpene employing ring-expansion by flash vacuum thermolysis
作者:Subir K. Sabui、Ramanathapuram V. Venkateswaran
DOI:10.1016/j.tetlet.2004.10.101
日期:2004.12
A total synthesis of the marine sesquiterpene helianane 1 is described involving the thermal rearrangement of the benzoxabicyclo[4.2.0]octenone 4 to generate the dienone 5 incorporating the benzoxocane ring system of 1. This dienone was converted to the key ketone 11, which on interaction with methylmagnesium iodide followed by hydrogenation of the resulting alkene 18 furnished helianane 1.
描述了海洋倍半萜烯lian烯1的全合成,涉及苯并氧杂双环[4.2.0]辛烯酮4的热重排以生成并入了苯并氧杂烷环系统1的二烯酮5。该二烯酮被转化为关键的酮11,其与甲基碘化镁相互作用后,将所得的烯烃18加氢得到furnished烯1。