Stereodivergent Synthesis of Piperidine Alkaloids by Ring-Rearrangement Metathesis/Reductive Lactam Alkylation of Nitroso Diels-Alder Cycloadducts
作者:Guillaume Vincent、Delphine Karila、Georges Khalil、Pierre Sancibrao、Didier Gori、Cyrille Kouklovsky
DOI:10.1002/chem.201300836
日期:2013.7.8
stereoselective synthesis of 2‐(2‐hydroxyalkyl)piperidine alkaloids by ring‐rearrangement metathesis of nitroso Diels–Alder cycloadducts is reported. The approach is illustrated by the formal synthesis of porantheridine and the total synthesis of andrachcinidine through a diastereodivergent allylation of an N‐alkoxy bicyclic lactam. The asymmetric synthesis of the latter alkaloid provides new insights into the configurational
报道了通过亚硝基Diels-Alder环加成物的环重整易位立体选择性合成2-(2-羟烷基)哌啶生物碱的一般方法。通过N-烷氧基双环内酰胺的非对映异构烯丙基化的形式,通过正式合成Porantheridine和通过Andrachcinidine进行总合成,可以说明这种方法。后一种生物碱的不对称合成为氯亚硝基试剂和环戊二烯之间环加合物的构型稳定性提供了新的见解。