Studies on Intramolecular Diels−Alder Reactions of Furo[3,4-<i>c</i>]pyridines in the Synthesis of Conformationally Restricted Analogues of Nicotine and Anabasine
作者:Tarun K. Sarkar、Sankar Basak、Zdenek Slanina、Tahsin J. Chow
DOI:10.1021/jo026555p
日期:2003.5.1
En route to conformationallyrestrictedanalogues of nicotine and anabasine, a novel synthetic route to bridged anabasines is described that hinges on a domino intramolecular [4 + 2]-cycloaddition/ring opening-elimination sequence of 3-amino-substituted furo[3,4-c]pyridines. Extension of this route to bridged nicotines, however, proved abortive, even when the dienophile tether is activated by a p-tolylsulfonyl