Chiral synthesis of (–)-mesembranol starting from<scp>D</scp>-glucose
作者:Noritaka Chida、Kohji Sugihara、Seiichiro Ogawa
DOI:10.1039/c39940000901
日期:——
The chiralsynthesis of the Sceletium alkaloid, (–)-mesembranol 1 is described; the cyclohexane ring in 1 is prepared in an optically active form fromD-glucose using Ferrier's carbocyclisation reaction and the perhydroindole skeleton is effectively constructed by an intramolecular aminomercuration reaction.
A chiral synthesis of the Sceletium alkaloid
(-)-mesembranol 1 is described. The cyclohexane ring in 1 is
prepared in an optically active form from D-glucose using
Ferrier’s carbocyclisation, and the critical stereochemistry of
the quaternary carbon in 1 is constructed stereoselectively via
chirality transfer by way of Claisen rearrangement of the
cyclohexenol derivative 14a. The perhydroindole skeleton in 1 is
effectively generated by intramolecular aminomercuriation of the
amino-olefin 18.