Studies on the synthesis of heterocyclic and natural compounds. CMXLV. A stereoselective synthesis of non-tryptamine components of reserpine and yohimbine from furfural.
Studies on the synthesis of heterocyclic and natural compounds. CMXLV. A stereoselective synthesis of non-tryptamine components of reserpine and yohimbine from furfural.
A general method for the stereoselective synthesis of the non-tryptamine components of reserpine and yohimbine via the same compound (6) is described. This common intermediate was readily obtained by Diels-Alder reaction of the furfural derivative (10) with maleic anhydride.