(2R,3S,4R,5R)-5-hydroxy-2,3,4,6-tetramethoxyhexanal

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Sugar components: (a) Acid hydrolysis using 1N sulfuric acid, and subsequent paper and gas-liquid chromatographic analyses confirmed the presence of equimolar D-glucose and D-sorbitol fractions; (b) Complete methylation, hydrolysis and subsequent gas-liquid chromatographic analysis confirmed the presence of equimolar 2,3,4,6-tetra-O-methyl-D-glucose and 1,2,3,5,6-penta-O-methyl-D-sorbitol fractions; (c) The high specific rotation, [α]D20, of +106.5° and the infrared absorption neighboring 840 cm-1 suggest the presence of an α-linkage between the glucose and sorbitol moieties; (d) Paper, gas-liquid and high-pressure liquid chromatographic analyses on the anhydrous crystals of maltitol gave the same single spot or peak at the same position as in the analyses on a commercial authentic maltitol preparation (special grade reagent). (c) The high specific rotation, [α]D20, of +106.5° and the infrared absorption

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Sugar components: (a) Acid hydrolysis using 1N sulfuric acid, and subsequent paper and gas-liquid chromatographic analyses confirmed the presence of equimolar D-glucose and D-sorbitol fractions; (b) Complete methylation, hydrolysis and subsequent gas-liquid chromatographic analysis confirmed the presence of equimolar 2,3,4,6-tetra-O-methyl-D-glucose and 1,2,3,5,6-penta-O-methyl-D-sorbitol fractions; (c) The high specific rotation, [α]D20, of +106.5° and the infrared absorption neighboring 840 cm-1 suggest the presence of an α-linkage between the glucose and sorbitol moieties; (d) Paper, gas-liquid and high-pressure liquid chromatographic analyses on the anhydrous crystals of maltitol gave the same single spot or peak at the same position as in the analyses on a commercial authentic maltitol preparation (special grade reagent). (c) The high specific rotation, [α]D20, of +106.5° and the infrared absorption

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Sugar components: (a) Acid hydrolysis using 1N sulfuric acid, and subsequent paper and gas-liquid chromatographic analyses confirmed the presence of equimolar D-glucose and D-sorbitol fractions; (b) Complete methylation, hydrolysis and subsequent gas-liquid chromatographic analysis confirmed the presence of equimolar 2,3,4,6-tetra-O-methyl-D-glucose and 1,2,3,5,6-penta-O-methyl-D-sorbitol fractions; (c) The high specific rotation, [α]D20, of +106.5° and the infrared absorption neighboring 840 cm-1 suggest the presence of an α-linkage between the glucose and sorbitol moieties; (d) Paper, gas-liquid and high-pressure liquid chromatographic analyses on the anhydrous crystals of maltitol gave the same single spot or peak at the same position as in the analyses on a commercial authentic maltitol preparation (special grade reagent). (c) The high specific rotation, [α]D20, of +106.5° and the infrared absorption

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Sugar components: (a) Acid hydrolysis using 1N sulfuric acid, and subsequent paper and gas-liquid chromatographic analyses confirmed the presence of equimolar D-glucose and D-sorbitol fractions; (b) Complete methylation, hydrolysis and subsequent gas-liquid chromatographic analysis confirmed the presence of equimolar 2,3,4,6-tetra-O-methyl-D-glucose and 1,2,3,5,6-penta-O-methyl-D-sorbitol fractions; (c) The high specific rotation, [α]D20, of +106.5° and the infrared absorption neighboring 840 cm-1 suggest the presence of an α-linkage between the glucose and sorbitol moieties; (d) Paper, gas-liquid and high-pressure liquid chromatographic analyses on the anhydrous crystals of maltitol gave the same single spot or peak at the same position as in the analyses on a commercial authentic maltitol preparation (special grade reagent). (c) The high specific rotation, [α]D20, of +106.5° and the infrared absorption