A mixture of N-(l-α-aspartyl)- and N-(l-β-aspartyl)-β-d-glucopyranosylamine was obtained by the condensation of N-(benzyloxycarbonyl)-l-aspartic anhydride with β-d-glucopyranosylamine. Attempts to separate the mixture by using cation-exchange chromatography, a copper(II) complex, and fractional recrystallization were carried out. These separations gave good yields of the desired β-amine.
N-(l-α-天冬
氨酰)-和N-(1-β-天冬
氨酰)-β-d-
吡喃
葡萄糖胺的混合物是通过N-(苄氧基羰基)-l-
天冬氨酸酐与β-d-缩合得到的。
吡喃
葡萄糖胺。尝试使用阳离子交换色谱、
铜(II)络合物和分级重结晶来分离混合物。这些分离得到了所需 β-胺的良好产率。