N-(N-Bromoacetylglycyl)-β-glycopyranosylamines of diand trisaccharides, namely, α-LFucp-(1→6)-β-D-GlcNAcp-NHCOCH2NHCOCH2Br, α-L-Fucp-(1→3)-β-D-GlcNAcpNHCOCH2NHCOCH2Br, α-L-Fucp-(1→6)-[α-L-Fucp-(1→3)]-β-D-GlcNAcp-NHCOCH2NHCOCH2Br, α-L-Fucp-(1→4)-[β-D-Galp-(1→3)]-β-D-GlcNAcp-NHCOCH2NHCOCH2Br, and α-L-Fucp-(1→2)-β-D-Galp-(1→4)-β-D-Glcp-NHCOCH2NHCOCH2Br, were synthesized in ~70% yields by treatment of the appropriate N-glycyl-β-glycopyranosylamines with N-bromoacetoxysuccinimide in aqueous DMF. The synthesized diand trisaccharide bromo derivatives are proposed for the obtaining of neoglycoconjugates of physiologically active substances, for instance, of daunorubicin anticancer agent.
N-(N-
溴乙酰基甘
氨酰)-β-
吡喃糖胺二糖和三糖,即α-LFucp-(1→6)-β-D-GlcNAcp-NHCOCH2NHCOCH2Br、α-L-Fucp-(1→3)-β-D-GlcNAcpNHCOCH2NHCOCH2Br、α-L-Fucp-(1→6)-[α-L-Fucp-(1→3)]-β-D-GlcNAcp-NHCOCH2NHCOCH2Br、α-L-Fucp-(1→4)-[β-D-Galp-(1→3)]-β-D-GlcNAcp-NHCOCH2NHCOCH2Br和α-L-Fucp-(1→2)-β-D-Galp-(1→4)-β-D-Glcp-NHCOCH2NHCOCH2Br,可通过在
DMF水溶液中用N-
溴乙酰基琥珀
酰亚胺处理相应的N-甘
氨酰-β-
吡喃糖胺,以约70%的收率合成。合成的二糖和三糖
溴衍
生物可用于获得生理活性物质的新糖苷,例如抗癌药物
柔红霉素。