Interactions between anomers of D-fructose and D-glucose, D-fructose and sucrose as well as D-glucose and sucrose in so-called computer vacuum and in aqueous solutions were recognized by means of the MM+ calculations. The strongest interactions were observed in the combinations of two ß-glucopyra- noses, α-glyucopyranose with α-fructopyranose and sucrose with ß-glucopyranose. Rheoiogical studies of aqueous solutions of the saccharide blends showed negligible differences in the viscosity for all tested combinations. The system of a lower calculated energy had a higher experimental viscosity.
While searching for the directions of synthesis of compounds with plant growth regulation properties, an estimation was done of the substituent effect at the carbamate nitrogen atom upon compounds of the carbamate series. It was found that the introduction of α-naphtyl substitution produces specific induction effects and izomerization rearrangements that do not favour biological activity. In the postemergence test, N-cyclohexyl 0-(2-methyl-2-aminopropyl) carbamate inhibited the growth of bean seedlings and affected chromosomes in cytological tests.