C. Fuganti et al., STEREOCHEMISTRY OF BAKERS-YEAST MEDIATED REDUCTION OF ALPHA,BETA-UNSATURATED DELTA-LACTONES IN THE GONIOTHALAMIN SERIES, Tetrahedron : asymmetry, 5(7), 1994, pp. 1135-1138
Baker's yeast reduction of racemic alpha,beta-unsaturated delta-lacton
es 5, 6 and 7 proceeds with kinetic preference for the (S) enantiomers
. The procedure allows the obtainment of enantiomerically pure (+)-(R)
-goniothalamin 5.