we achieved the total synthesis of carbazole alkaloid mukoenine A through a seven-step sequence involving the construction of a carbazole framework using the electrocyclization of a 6π-electron systemincluding an allene intermediate as the key step. Subsequently, the synthesis of pyrano[3,2-a]carbazole alkaloid girinimbine was achieved by the construction of the pyranring via selenoetherification
在这项研究中,我们通过一个七步序列实现了咔唑生物碱 mukoenine A 的全合成,该序列涉及以包括丙二烯中间体的 6π 电子系统的电环化为关键步骤构建咔唑骨架。随后,通过 mukoenine A 的邻烯丙基苯酚部分的硒醚化构建吡喃环,实现了吡喃并[3,2- a ]咔唑生物碱吉林滨的合成。