The synthesis of some deoxygenated analogues of early intermediates in the biosynthesis of glycosylphosphatidylinositol (GPI) membrane anchors
作者:Alexander P. Dix、Charles N. Borissow、Michael A.J. Ferguson、John S. Brimacombe
DOI:10.1016/j.carres.2004.02.026
日期:2004.5
Syntheses are described of 2-azido-4,6-di-O-benzyl-2,3-dideoxy-d-ribo-hexopyranosyl fluoride, 6-O-acetyl-2-azido-3-O-benzyl-2,4-dideoxy-d-xylo-hexopyranosyl fluoride and 2-azido-3,4-di-O-benzyl-2,6-dideoxy-d-glucopyranosyl fluoride. These glycosyl donors were coupled with the acceptor 1d-2,3,4,5-tetra-O-benzyl-1-O-(4-methoxybenzyl)-myo-inositol and the alpha-coupled products were transformed into alpha-d-3dGlcpN-PI
描述了2-叠氮基-4,6-二-O-苄基-2,3-二脱氧-d-核糖-己吡喃糖基氟,6-O-乙酰基-2-叠氮基-3-O-苄基-2,4的合成-二脱氧-d-xylo-己吡喃糖基氟和2-叠氮基-3,4-二-O-苄基-2,6-二脱氧-d-吡喃葡萄糖基氟。这些糖基供体与受体1d-2,3,4,5-四-O-苄基-1-O-(4-甲氧基苄基)-肌醇偶联,并将α-偶联产物转化为α-d- 3dGlcpN-PI,α-d-4dGlcpN-PI和alpha-d-6dGlcpN-PI通过H-膦酸酯途径形成。简要提到了这些脱氧糖类似物及其N-乙酰化形式作为锥虫和HeLa中存在的N-脱乙酰酶和α-(1-> 4)-d-甘露糖基转移酶活性的候选底物/抑制剂的生物学评估。 (人类)无细胞系统。