The synthesis of 1,2-cis-homoiminosugars bearing an NHAc group at the C-2 position is described. The key step to prepare these α-d-GlcNAc and α-d-GalNAc mimics utilizes a β-aminoalcohol skeletal rearrangement applied to an azepane precursor. This strategy also allows access to naturally occurring α-HGJ and α-HNJ. The α-d-GlcNAc-configured iminosugar was coupled to a glucoside acceptor to yield a novel
描述了在C-2位带有NHAc基团的1,2-顺式-同氨基糖的合成。制备这些α- d -GlcNAc和α- d -GalNAc模拟物的关键步骤是将β-氨基醇骨架重排应用于zezepane前体。该策略还允许访问天然存在的α-HGJ和α-HNJ。将α - d -GlcNAc-构型的亚氨基糖与葡糖苷受体偶联以产生新的假二糖。初步的糖苷酶抑制评估表明,α - d -GalNAc构型的同亚氨基糖是一种有效的选择性α- N-乙酰半乳糖苷酶抑制剂。
Synthesis and evaluation of N-alkylated analogues of aza-galacto-fagomine – potential pharmacological chaperones for Krabbe disease
作者:Agnete H. Viuff、Henrik H. Jensen
DOI:10.1039/c6ob01309k
日期:——
Seven novel alkylated or acylated analogues of hexahydropyridazine aza-galacto-fagomine (AGF) was prepared and studied as glycosidase inhibitors with the aim of increasing inhibitory potency and selectivity. The enzyme galactocerebrosidase, implicated in Krabbe disease, was found to be potently inhibited by n-butyl N2-alkylated AGF.
Synthetic nucleoside analogues characterized by a C-C anomeric linkage form a family of promising therapeutics against infectious and malignant diseases. Herein, C-nucleosides comprising structural variations at the sugar and nucleobase moieties were examined for their ability to inhibit both murine and human norovirus RNA-dependent RNA polymerase (RdRp). We have found that the combination of 4-amino-pyrrolo[2