A concise (six-step) synthesis of the indolizidine alkaloid tashiromine (1) has been achieved. Olefin cross-metathesis was used to prepare a key functionalised allylsilane, which subsequently underwent electrophile-induced ring-closure to establish the bicyclic framework with complete control of stereochemistry.
已实现了
吲哚里西啶
生物碱tashiromine(1)的简洁(六步)合成。通过烯烃交叉 metathesis制备了关键的功能化烯丙基
硅烷,随后在亲电诱导的环闭合过程中建立了双环骨架,并完全控制了立体
化学。