申请人:Dekany Gyula
公开号:US06953850B1
公开(公告)日:2005-10-11
The invention provides collections of orthogonally-protected monosaccharides as universal building blocks for the synthesis of glycoconjugates of non-carbohydrate molecules, neo-glycoconjugates and oligosaccharides. This orthogonal protection strategy allows for the specific deprotection of any substituent ono the saccharide ring, and greatly facilitates targeted or library-focused carbohydrate-related syntheses. In particular, the invention provides a universal monosaccharide building block of General Formula (I) or General Formula (II) in which A is a leaving group; X is hydrogen, O, N or N
3
; X
1
is hydrogen, —CH
2
O—, —CH
2
NH—, —CH
3
, —CH
2
N
3
or —COO—; and B, C, D and E are protecting groups that can be cleaved orthogonally, and in which B, C, D and E are absent when X is hydrogen or N
3
, and E is absent when X
1
is hydrogen, CH
3
or N
3
.
该发明提供了一种正交保护的单糖集合,作为合成非碳水化合物分子的糖蛋白共轭物、新糖蛋白共轭物和寡糖的通用构建块。这种正交保护策略允许特异性去保护糖环上的任何取代基,并极大地促进了针对性或以库为焦点的与碳水化合物相关的合成。具体而言,该发明提供了一种通用单糖构建块,其通用公式为(I)或通用公式(II),其中A是一个离去基团;X是氢、O、N或N3;X1是氢、-CH2O-、-CH2NH-、-CH3、-CH2N3或-COO-;B、C、D和E是可以正交裂解的保护基团,其中当X为氢或N3时,B、C、D和E不存在,当X1为氢、CH3或N3时,E不存在。