Abstract Benzyl 2,3,2′,3′,4′-penta-O-acetyl-β-xylobioside, 2-nitrophenyl β-xylobioside, 4-nitrophenyl β-xylobioside, and 2-iodobenzyl 1-thio-β-xylobioside were synthesized via a short and highly selective route. β- d -Xylopyranosides were selectively 4-O-triethylsilylated using dibutyltin oxide and triethylsilyl chloride and subsequently 2,3-di-O-acetylated. Desilylation under acidic conditions gave
摘要苄基2,3,2',3',4'-戊-O-乙酰基-β-
木糖苷,2-
硝基苯基β-
木糖苷,4-
硝基苯基β-
木糖苷和2-
碘苄基1-
硫代-β-
木糖苷通过短而高度选择性的途径合成。使用二丁基氧化
锡和三乙基甲
硅烷基
氯选择性地将β-d-
吡喃
吡喃糖苷4-O-三乙基甲
硅烷基化,然后将2,3-二-O-乙酰化。在酸性条件下进行甲
硅烷基化得到4-未保护的
木糖苷,然后使用2,3,4-三-O-乙酰基-α-d-木
吡喃糖基三
氯乙酰亚
氨酸酯将其β-d-
木糖基化。