hydrolysis products of methylated wheat bran hemicellulose. This sugar has now been synthesized from ethyl 2,3-di-O-acetyl-5-O-trityl-α-L-arabinoside by detritylation, methylation, and hydrolysis. The free sugar was obtained as a sirup and was characterized by periodate oxidation together with the preparation of a crystalline osazone and a crystalline lactone.
5-O-甲基-
L-阿拉伯糖被认为存在于甲基化麦麸半
纤维素的
水解产物中。这种糖现在已经由乙基 2,3-二-O-乙酰基-5-O-三苯甲基-α-
L-阿拉伯糖苷通过脱三苯甲基化、甲基化和
水解合成。游离糖以糖浆形式获得,其特征在于高
碘酸盐氧化以及结晶 osazone 和结晶内酯的制备。