Synthesis and Conformational Analysis of Bicyclic Sulfonium Salts. Structures Related to the Glycosidase Inhibitor Australine
作者:Nag S. Kumar、B. Mario Pinto
DOI:10.1021/jo051560p
日期:2006.4.1
The syntheses of eight sulfonium compounds with structuresrelated to the naturally occurring pyrrolizidine alkaloid, australine, in which the bridgehead nitrogen atom is replaced by a sulfonium ion, are described. The synthetic strategy relies on the intramolecular attack of a cyclic thioether across a terminal double bond in the presence of a suitable electrophile. We postulate that these compounds