作者:Qi-Xian Lin、Tse-Lok Ho
DOI:10.1016/j.tet.2013.02.014
日期:2013.4
The phenanthroindolizidine alkaloid tylophorine has been synthesized in the (R)- and racemic forms. One of the routes involves three steps from a known compound employing a Stevens rearrangement as the pivotal reaction. The phenanthrene moiety was constructed by either a base-catalyzed cyclization of 2-alkynylbiphenyls or a double Suzuki coupling of a 2,2′-dibromobiphenyl with vic-bis(pinacolatoboryl)alkene
菲咯啉吲哚生物碱酪氨酸已被合成为(R)-和外消旋形式。一种途径涉及从已知化合物开始的三个步骤,该化合物采用史蒂文斯重排作为关键反应。菲部分是通过2-炔基联苯的碱催化环化或2,2'-二溴代联苯与vic-双(频哪醇硼烷基)烯烃的双铃木偶联而构建的。