Synthesis of 2- and 4-nitrophenyl β-glycosides of β-(1 → 4)-d-xylo-oligosaccharides of dp 2–4
作者:Kenichi Takeo、Yasushi Ohguchi、Rumi Hasegawa、Shinichi Kitamura
DOI:10.1016/0008-6215(95)00214-e
日期:1995.11
synthesized by N-iodosuccinimide-silver triflate-promoted condensation using 11 and 15 as the glycosyl acceptors and ethyl 1-thio-β-d-xylopyranoside triacetate 16, 36, and 37 as the glycosyl donors. Also described are an improved preparation of 4 and 5, and the synthesis of 1-naphthyl β-d-xylopyranoside, as well as an alternative approach to the 2- and 4-nitrophenyl β-xylobiosides.
通过二丁基氧化锡介导的酰化作用,将2-和4-硝基苯基β-d-吡喃吡喃糖苷(4和5)转化为相应的2,3-二-O-苯甲酰基衍生物11和15。炭柱色谱法,由市售材料制成,并转化为二糖和三糖甲基1-硫代-β-糖苷36和37。β-(1→4)-d-的2-和4-硝基苯基β-糖苷dp 2–4的木糖寡糖是通过N-碘代琥珀酰亚胺-三氟甲磺酸银促进的缩合反应合成的,使用11和15作为糖基受体,乙基1-硫代-β-d-吡喃吡喃糖苷三乙酸酯16、36和37作为糖基供体。 。还描述了改进的4和5的制备方法以及1-萘β-d-吡喃吡喃糖苷的合成,以及2-和4-硝基苯基β-吡喃二糖苷的替代方法。