An Enantioselective Total Synthesis Of (+)-Elenoic Acid And The Nonnatural Enantiomers Of Tetrahydroalstonine, Aricine, And Reserpinine

A simple enantioselective synthesis of (+)epi-elenoic acid is reported and its transformation into (+)-elenoic acid is described. Well-established procedures transform these compounds into the antipodes of tetrahydroalstonine, aricine, and reserpinine.