作者:Om P. Srivastava、Ole Hindsgaul、Mohamed Shoreibah、Michael Pierce
DOI:10.1016/0008-6215(88)84115-6
日期:1988.8
the trisaccharide 8-methoxycarbonyloctyl 6-O-[2-O-(2-acetamido-2-deoxy-beta-D-glucopyranosyl)-alpha-D-mannopyrano syl] -beta-D-mannopyranoside (3), a previously reported acceptor for N-acetylglucosaminyltransferase-V (GnT-V) have been chemically synthesized and evaluated as GnT-V acceptors. Replacement of the beta-D-man rho-O(CH2)8COOMe "reducing end" of 3 by beta-D-Glc rho-O(CH2)7 CH3 gave octyl
三糖8-甲氧基羰基辛基6-O- [2-O-(2-乙酰氨基-2-脱氧-β-D-吡喃吡喃糖基)-α-D-甘露吡喃糖基]-β-D-甘露吡喃糖苷的六个类似物(3),化学合成了先前报道的N-乙酰氨基葡萄糖氨基转移酶-V(GnT-V)的受体,并将其评估为GnT-V受体。用β-D-Glcrho-O(CH2)7 CH3取代3的β-D-manrho-O(CH2)8COOMe“还原端”得到辛基6-O- [2-O-(2-乙酰氨基) -2-脱氧-β-D-吡喃葡糖基]-α-D-甘露吡喃糖基)-β-D-吡喃葡糖苷(5)的活性与3的活性没有区别。除去β-D-Glc的4-OH基团5中的残基对活性几乎没有影响,而相应的4-O-甲基衍生物的活性是其两倍。用甲基取代相同残基的C-6 pro-R氢,得到L-甘油-D-葡萄糖衍生物8,而替换相应的pro-S氢则得到D-甘油-D-葡萄糖化合物9。三糖8,其围绕C-5-C-6键的旋转异