The preparation of vincamine (1a) via indoloquinolizine propionic esters (7) is discussed. A new synthesis of the starting material methyl 2-acetoxyacrylate and an oxidative transformation of 7b to 1a are described and an alternative, more efficient route is reported.
The preparation of vincamine (1a) via indoloquinolizine propionic esters (7) is discussed. A new synthesis of the starting material methyl 2-acetoxyacrylate and an oxidative transformation of 7b to 1a are described and an alternative, more efficient route is reported.