dehydroindolizidine has been prepared from the exocyclic vinylogous urethane via an acylative ring closure. The specific formation of the enolate required for further elaboration to Elaeocarpus alkaloid precursors has been achieved by making use of the vinylogous amide .
取代的脱氢
吲哚并
咪唑已经由环外
乙烯基氨基甲酸酯通过酰基闭环制备。通过使用
乙烯类酰胺,可以实现进一步细化到Elaeocarpus
生物碱前体所需的烯醇化物的特定形成。