D-アルトロース 化学特性,用途語,生産方法
化学的特性
white to off-white powder
使用
D-Altrose is the epimer of D-glucose at C3 and have recently been discovered to possess antioxidant properties by the suppression of reactive oxygen species production in mitochondria due to competiti
on with D-glucose at the cellular level.
定義
An aldohexose that is isomeric with glucose, tallose, allose, and others.
純化方法
Crystallise D-altrose from aqueous EtOH. If it is obtained by the hydrolysis of the acetate, then it may contain sodium and acetate ions. Ions are best removed by dissolving in H2O, passing through suitable columns of ion-exchange resins, e.g. Amberlite IR-120 and Duolite A, and concentrating in a vacuum to a syrup. This is dissolved in MeOH, filtered and evaporated in a vacuum desiccator over granular CaCl2. The thick syrup is inoculated with seed crystals, stirred, and before it sets to a magma of crystals, transfer the crystals with MeOH to a Büchner funnel. Recrystallise them in the same way. -D-Altrofuranoside has initial [] D ~-69o (c 4, H2O) which mutarotates to +33o. [Richtmeyer Methods in Carbohydrate Chemistry I 107 Academic Press 1962, Beilstein 1 IV 4301, see Angyal Adv Carbohydrate Chem Biochem 42 15 1984 for ratio of anomers in solution.]
D-アルトロース 上流と下流の製品情報
原材料
準備製品