Synthesis of heterocyclic compounds related to fredericamycin A - the cyclopent[<i>g</i>]isoquinoline system
作者:Derrick L. J. Clive、Janette Sedgeworth
DOI:10.1002/jhet.5570240240
日期:1987.3
A synthetic route is described to compounds 9 and 10, which resemble the cyclopent[g]isoquinoline system of the antitumor agent, Fredericamycin A. The method is based upon directed lithiation of the pyridine 6 and conjugate addition to 2-cyclopenten-1-one. Cyclization of the product 7 with base then generates the required skeleton, which can be aromatized and methylated (7 → 8 → 9).
描述了化合物9和10的合成路线,该化合物类似于抗肿瘤药Fredericamycin A的环戊[ g ]异喹啉系统。该方法基于吡啶6的直接锂化和向2-环戊烯-1-酮的缀合物加成。然后将产物7与碱环化,产生所需的骨架,该骨架可以被芳构化和甲基化(7→8→9)。