Collect. Czech. Chem. Commun. 1980, 45, 475-481

Effect of temperature on chiroptical and conformational properties of acyclic ketoses

Slavomír Bystrický, Tibor Sticzay and Igor Tvaroška

Institute of Chemistry, Slovak Academy of Sciences, 809 33 Bratislava


Conformational mobility of tetruloses, 2-pentuloses, D-3-pentulose and 4-deoxy-L-pentulose was studied by measuring temperature dependences of CD spectra in the region +40°C to -140°C in a methanol-ethanol (1:4) mixture. The changes in spectra reflect the population of rotamers around bonds to the carbonyl chromophore. The most stable conformers were determined by PCILO quantum chemical calculation.