作者:R.Richard Goehring
DOI:10.1016/s0040-4039(00)60002-3
日期:1992.10
A three-step synthesis of the azaphenanthrene alkaloid eupoulauramine (1) has been achieved from 3-bromopyridine. The key step in the synthesis was a one-pot conversion of 4 to O-demethyleupolauramine (9) via an intramolecular SRN1 reaction followed in situ stilbene photocyclization. Methylation by the procedure of Weinreb gave the natural product.
从3-溴吡啶已经完成了三氮杂菲生物碱类古朴胺(3)的三步合成。合成中的关键步骤是通过分子内S RN 1反应从一锅法将4转化为O-脱甲基紫戊胺(9),然后进行原位二苯乙烯光环化。通过Weinreb的方法进行甲基化,得到天然产物。