Reaction of hydrogen chloride or hydrogen bromide in glacial acetic acid with 3,4-di-O-acetyl-L-rhamnal followed by hydrolysis and acetylation of the reaction product afforded 3-chloro- or 3-bromo-2, 3,6-trideoxy-L-arabino-hexopyranoses. These novel halosugars were further converted into various glycosides.
氯化氢或
溴化氢在
冰醋酸中与3,4-二-O-乙酰基-
L-鼠李糖反应,随后经过
水解和反应产物的乙酰化,获得了3-
氯或3-溴-2, 3, 6-脱氧-L-阿拉伯己糖。这些新型卤糖进一步转化为各种糖苷。