The novel 1,2-dithianenucleoside was designed as a hybrid type of modification between 4′-thioribonucleoside and altritol nucleoside. The desired compound, i.e., 1-[(3R,4R,5S,6R)-4,5-dihydroxy-6-hydroxymethyl-1,2-dithianyl]uracil (20), was prepared via the Pummerer-like reaction, followed by Vorbruggen glycosylation between an appropriately protected 1,2-dithiane derivative and silylated uracil.
新型 1,2-二噻烷核苷是作为 4′-
硫代核苷和阿利托核苷之间的混合修饰类型而设计的。所需的化合物,即 1-[(3R,4R,5S,6R)-4,5-二羟基-6-羟甲基-1,2-二噻酰]尿
嘧啶(20),是通过类似普默尔反应制备的,然后在适当保护的 1,2-二噻酰衍
生物和
硅烷化尿
嘧啶之间进行沃布鲁根糖基化反应。