Biocatalytic synthesis of aminodeoxy purine N9-beta-D-nucleosides containing 3-amino-3-deoxy-beta-D-ribofuranose, 3-amino-2,3-dideoxy-beta-D-ribofuranose, and 2-amino-2-deoxy-beta-D-ribofuranose as sugar moieties
申请人:Barai N. Vladimir
公开号:US20070065922A1
公开(公告)日:2007-03-22
Purine N
9
-β-D-nucleosides containing 3-amino-3-deoxy-β-D-ribofaranose, 3-amino-2,3-dideoxy-β-D-ribofuranose, and 2-amino-2-deoxy-β-D-ribofuranose as sugar moieties are synthesized by biocatalytic transglycosylation of purine bases and the respective 3′-amino-3′-deoxyuridine, 3′-amino-3′-deoxythymidine and 2′-amino-2′-deoxyuridine as donors of the carbohydrate moiety, and the cells of
Escherichia coli
as a biocatalyst or glutaraldehyde (GA) treated cells of
Escherichia coli
as a biocatalyst or a mixture of thymidine (uridine) phosphorylase and purine nucleoside phosphorylase.
含有3-氨基-3-脱氧-β-D-核糖呋喃糖,3-氨基-2,3-二脱氧-β-D-核糖呋喃糖和2-氨基-2-脱氧-β-D-核糖呋喃糖作为糖基团的嘌呤N9-β-D-核苷酸,通过生物催化转基因嘌呤碱基和相应的3'-氨基-3'-脱氧尿苷、3'-氨基-3'-脱氧胸苷和2'-氨基-2'-脱氧尿苷作为碳水化合物基团供体,以大肠杆菌细胞作为生物催化剂或经戊二醛处理的大肠杆菌细胞作为生物催化剂或胸苷(尿苷)磷酸化酶和嘌呤核苷酸磷酸化酶的混合物进行合成。