4396. Gentiobiose
Nomenclature
CAS number: 554-91-6
6-O-β-d-Glucopyranosyl-d-glucose; 6-(β-d-glucosido)-d-glucose; amygdalose. C12H22O11; mol wt 342.30.
C 42.11%, H 6.48%, O 51.41%.
Description and references
From gentianose by partial hydrolysis with 0.2% H2SO4 or with invertin. From d-glucose by enzymatic synthesis with emulsin: Helferich, Lette, Org. Synth. 22, 53 (1942). Prepn and structure: Haworth, Wylam, J. Chem. Soc. 123, 3120 (1923); Hudson, J. Am. Chem. Soc. 51, 1708 (1930). Structure: Hassid, Ballou in W. Pigman, The Carbohydrates (Academic Press, New York, 1957) p 492. Synthesis: Helferich, Klein, Ann. 450, 219 (1926); Reynolds, Evans, J. Am. Chem. Soc. 60, 2559 (1938). Hydrolysis with almond emulsin gives 2 mols d-glucose.
