Stereocontrolled synthesis of 4′-C-cyano and 4′-C-cyano-4′-deoxy pyrimidine pyranonucleosides as potential chemotherapeutic agents
作者:Christos Kiritsis、Stella Manta、Vanessa Parmenopoulou、Athina Dimopoulou、Nikolaos Kollatos、Ioannis Papasotiriou、Jan Balzarini、Dimitri Komiotis
DOI:10.1016/j.carres.2012.10.012
日期:2012.12
the primary hydroxyl group and oxidation, the 4'-ketonucleosides 6a-c and 7c were obtained. Reaction of compounds 6a,b, and 7c with sodium cyanide and subsequent deprotection gave the target 1-(4'-C-cyano-alpha-D-mannopyranosyl)nucleosides 12a-c. Deoxygenation at the 4'-position of cyanohydrins 8a,b, and 11c followed by deprotection led to the desired 1-(4'-C-cyano-4'-deoxy-alpha-D-talopyranosyl)nucleosides
设计并合成了一系列新的4'-C-氰基和4'-C-氰基-4'-脱氧嘧啶吡喃核苷。将市售的1,2,3,4,6-戊基-O-乙酰基-D-甘露吡喃糖(1)分别与甲硅烷基化的5-氟尿嘧啶,尿嘧啶和胸腺嘧啶缩合,以在脱乙酰化后得到1-(α-D-甘露吡喃糖基)核苷(2a-c)。使2a-c经历特定的缩醛化,伯羟基的选择性保护和氧化的序列,获得了4'-酮核苷6a-c和7c。化合物6a,b和7c与氰化钠反应,然后脱保护,得到目标1-(4'-C-氰基-α-D-甘露吡喃糖基)核苷12a-c。在氰醇8a,b和11c的4'位脱氧,然后脱保护,得到所需的1-(4'-C-氰基-4' -脱氧-α-D-talopyranosyl)核苷(15a-c)。对新合成的化合物在细胞培养中的潜在抗病毒和抑制细胞生长活性进行了评估。