作者:Mihály Viktor Pilipecz、Tamás Róbert Varga、Pál Scheiber、Zoltán Mucsi、Amélie Fàvre-Mourgues、Sándor Boros、László Balázs、Gábor Tóth、Péter Nemes
DOI:10.1016/j.tet.2012.04.100
日期:2012.7
different reducing methods unsaturated indolizidine and quinolizidine lactams substituted with a nitro group were transformed into various alkaloid-like derivatives. Hydrogen transfer and palladium catalyzed hydrogenation gave compounds of ketolactam or lactam type meanwhile the nitro group was eliminated. On the other hand, in presence of Raney-nickel catalyst the nitro compounds were reduced to diastereomeric
使用不同的还原方法,将被硝基取代的不饱和吲哚并咪唑和喹唑并内酰胺转化为各种生物碱样衍生物。氢转移和钯催化的氢化得到酮内酰胺或内酰胺类型的化合物,同时消除了硝基。另一方面,在阮内镍催化剂的存在下,硝基化合物被还原为非对映异构的氨基衍生物,其立体化学通过NMR光谱法得以阐明。使用双二甲氧基乙氧基氢化铝钠(Red-Al)作为还原剂,分离并表征了意外的三环氮杂环丁烷。