3,4-Anhydro-d-altritol has been prepared by the partial, acidic hydrolysis of its 1,2:5,6-di-O-isopropylidene derivative. When treated with 2.5n sodium hydroxide, 3,4-anhydro-d-altritol yields 1,4-anhydro-d-altritol and 1,5-anhydro-l-glucitol as the sole products; 2,3-anhydro-d-iditol is postulated as an intermediate. 2,3-Anhydro-1,6-di-O-triphenylmethyl-d-iditol, prepared by epoxide migration of 3
通过其1,2:5,6-二-O-异亚丙基衍
生物的部分,酸性
水解可制得3,4-脱
水-d-链烷糖醇。当用2.5n
氢氧化钠处理时,3,4-脱
水-d-阿糖醇为唯一产物,即1,4-脱
水-d-阿糖醇和1,5-脱
水-l-
葡萄糖醇。假定将2,3-脱
水-d-ID醇作为中间体。通过3,4-脱
水-1,6-二-O-三苯基甲基-d-
麦芽糖醇的环氧迁移制备的2,3-脱
水-1,6-二-O-三苯基甲基-d-
麦芽糖醇-脱
水-d-链烷糖醇和1,5-脱
水的-1-
葡萄糖醇在酸性条件下
水解。脱
水己糖醇是3,4-脱
水-d-
麦芽糖醇被0.1n
硫酸水解的次要产物。在1,2,5,6-四-O-乙酰基-3,4-脱
水-d-
麦芽糖醇的酸性
水解过程中,乙酰氧基基团的参与是明显的。