A convenient synthesis of β-d-galactosyl disaccharide derivatives using the β-d-galactosidase from Bacillus circulans
作者:Taichi Usui、Shinobu Kubota、Hiroshi Ohi
DOI:10.1016/0008-6215(83)85010-1
日期:1993.6
(p-nitrophenyl N-acetyl-beta-isolactosaminide) were regioselectively synthesized from lactose and p-nitrophenyl 2-acetamido-2-deoxy-glucopyranoside, employing transglycosylation by the beta-D-galactosidase fromBacilluscirculans and by controlling the concentration of organic solvent in the reaction system. The (1-->4)-linked disaccharide was formed exclusively when the concentration of organic solvent was high
Chemoenzymatic synthesis of mono- and di-fluorinated Thomsen–Friedenreich (T) antigens and their sialylated derivatives
作者:Jun Yan、Xi Chen、Fengshan Wang、Hongzhi Cao
DOI:10.1039/c2ob26989a
日期:——
Fluorinated Thomsen–Friedenreich (T) antigens were synthesized efficiently from chemically produced fluorinated monosaccharides using a highly efficient one-pot two-enzyme chemoenzymatic approach containing a galactokinase and a D-galactosyl-β1–3-N-acetyl-D-hexosamine phosphorylase. These fluorinated T-antigens were further sialylated to form fluorinated ST-antigens using a one-pot two-enzyme system
氟化 Thomsen-Friedenreich (T) 抗原是使用含有半乳糖激酶和D-半乳糖基-β1-3- N-乙酰-D-己糖胺磷酸化酶的高效一锅双酶化学酶法从化学生产的氟化单糖有效合成的。使用含有 CMP-唾液酸合成酶和 α-2-3-唾液酸转移酶的一锅双酶系统将这些氟化 T 抗原进一步唾液酸化以形成氟化 ST 抗原。