AbstractsChemistry

The original print is faded. The output is the best quality possible at this time. (1) The chemical structure of Dextran II, the bacterial polysaccharide produced from sucrose by Leuconostoc mesenteroides, has been investigated by means of methylation studies, using improved methylation and fractional distillation techniques. (2) Highly-purified Dextran II has been shown to function as a haptene in precipitin reactions with anti-Leuconostoc sera. (3) The Haworth methylation technique has been modified and adapted generally to the synthesis of partially-methylated glucose derivatives. (4) 2,3-Dimethyl-ß-methyl glucoside and 2,3,4-trimethylglucose have been synthesized by new procedures developed by the author. Improvements have been made in the methods of synthesis of 2,3-dimethyl-, 2,3,4-trimethyl- and 2,3,4,6-tetramethyl methyl glucosides. [...]