Constituents of Tropical Medicinal Plants, LXIII: Synthesis of 2-Methoxyonychine Alkaloids - Structure Revision of Oxylopidine
作者:Hans Achenbach、Andreas Schwinn
DOI:10.1002/ardp.19943271202
日期:——
were cyclized by polyphosphoric acid to yield the corresponding 2‐methoxyonychines. By this method a number of 2‐methoxy‐substituted onychines were prepared for the first time, i.a. oxylopidine, the structure of which has to be revised.
β-氨基肉桂酸酯与 3-氯-2-甲氧基-巴豆醛的缩合打开了获得 2-苯基-5-甲氧基-4-甲基烟酸酯的容易途径,该酯被多磷酸环化得到相应的 2-甲氧基甲氧基。通过这种方法,首次制备了许多 2-甲氧基取代的甲氧嘧啶,即氧吡啶,其结构有待修改。