Gram-scale production of sugar nucleotides and their derivatives
作者:Shuang Li、Shuaishuai Wang、Yaqian Wang、Jingyao Qu、Xian-wei Liu、Peng George Wang、Junqiang Fang
DOI:10.1039/d1gc00711d
日期:——
Here, we report a practical sugar nucleotide production strategy that combined a high-concentrated multi-enzyme catalyzed reaction and a robust chromatography-free selective precipitation purification process. Twelve sugar nucleotides were synthesized on a gram scale with a purity up to 98%.
作者:Hsin-Kai Tseng、Yung-Yu Su、Ting-Wei Chang、Hsin-Chien Liu、Pei-Jhen Li、Pei-Yun Chiang、Chun-Cheng Lin
DOI:10.1039/d1cc00653c
日期:——
(AMRS) on the nonreducing end GalNH2 or GalAz (2-azido-2-deoxy galactose). Thus, C5 and C8-modified sialic acid was efficiently assembled on GalNH2 (or GalAz) to achieve the synthesis of the GAA-7 (one of the echinodermatous gangliosides with higher neuritogenic activity) glycan moiety.
[EN] ASGPR-BINDING COMPOUNDS FOR THE DEGRADATION OF EXTRACELLULAR PROTEINS<br/>[FR] COMPOSÉS SE LIANT À L'ASGPR POUR LA DÉGRADATION DE PROTÉINES EXTRACELLULAIRES
申请人:AVILAR THERAPEUTICS INC
公开号:WO2021155317A1
公开(公告)日:2021-08-05
Compounds and compositions that have an asialoglycoprotein receptor (ASGPR) binding ligand bound to an extracellular protein binding ligand for the selective degradation of the target extracellular protein in vivo to treat disorders mediated by the extracellular protein are described.
A novel D-galactosyl-β1â3-N-acetyl-D-hexosamine phosphorylase cloned from Bifidobacterium infantis (BiGalHexNAcP) was used with a recombinant E. coli K-12 galactokinase (GalK) for efficient one-pot two-enzyme synthesis of T-antigens, galacto-N-biose (Galβ1â3GalNAc), lacto-N-biose (Galβ1â3GlcNAc), and their derivatives.
A concise chemoenzymatic total synthesis of neutral Globo-series glycosphingolipids Globo A and Globo B, and Forssman and para-Forssman antigens
作者:Yu-Ching Chiang、Chun-Yen Wu、Pei-Yun Chiang、Avijit K. Adak、Chun-Cheng Lin
DOI:10.1007/s10719-023-10133-8
日期:2023.10
shows natural properties of a cytotoxicity receptor NKp44 binding ligand. The highly complex heptasaccharide glycan structure of Globo A combined with its biological profile provides a unique target for the development of a synthetic method to facilitate its bioactivity studies. Here, a concise chemoenzymatic route to the synthesis of Globo A and its α1,3-galactose-linked congener Globo B is reported
Globo A 是一种中性 Globo 系列鞘糖脂 (GSL),显示出细胞毒性受体 NKp44 结合配体的天然特性。 Globo A 高度复杂的七糖聚糖结构与其生物学特征相结合,为开发合成方法以促进其生物活性研究提供了独特的目标。在此,报道了合成 Globo A 及其 α1,3-半乳糖连接的同源物 Globo B 的简明化学酶路线。成功的关键是使用合成的叠氮基 β-Globo H 鞘氨醇 (Globo H-βSph) 作为受体底物和两种糖基转移酶,即来自鼬螺杆菌(BgtA) 的 α1,3 -N-乙酰半乳糖胺基转移酶和人类血型B α1,3-半乳糖基转移酶 (h1,3GTB),分别用于立体选择性构建末端 α1,3-GalNAc 和 α1,3-Gal 连接。通过还原和化学选择性N-酰化进一步精制叠氮基-Sph 脂质侧链,以完成中性 Globo 系列 GSL 的全合成。此外,还制备了福斯曼抗原和副