The enantiomers of 6, 8-dioxabicyclo [3.2. 1] octane and the alkyl substituted derivatives, exo-and endo-7-methyl, exo-and endo-5, 7-dimethyl, 7, 7-dimethyl, and exo-and endo-7- ethyl-5-methyl (exo-and endo-brevicomin), were synthesized stereoselectively with known configuration by standard synthetic methods, or with baker's yeast, or both. The correlation between the absolute configuration of the bicyclic rings and the optical rotation was ...
