A concise enantiospecific synthesis of nuphar piperidine alkaloids: total synthesis of (–)-anhydronupharamine, (–)-nupharamine, (–)-nuphenine and (+)-3-epinupharamine
作者:Toshio Honda、Fumihiro Ishikawa、Shin-ichi Yamane
DOI:10.1039/c39940000499
日期:——
Enantiospecific syntheses of (–)-anhydronupharamine, (–)-nupharamine, (–)-nuphenine, and (+)-3-epinupharamine are achieved starting from (–)-or (+)-carvone as chiral sources, in which a regioselective reductive fragmentation of the cyclopentane derivatives and an intramolecular aza–Wittig reaction were involved as key reactions.
对映体合成(-)-脱水正丙胺,(-)-正丙胺,(-)-苯丙氨酸和(+)-3-正丙胺的方法是从(-)-或(+)-香芹酮为手性来源开始的,其中关键反应包括环戊烷衍生物的区域选择性还原片段化和分子内氮杂-维蒂希反应。