中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
乙醇酸乙酯 | ethyl 2-hydroxyacetate | 623-50-7 | C4H8O3 | 104.106 |
The synthesis of 5-cyanomethoxy-2-thiouracil (5b) is described. The acid catalysed ethanolysis of 5b leads to 5-ethoxycarbonylmethoxy-2-thiouracil (5a). Condensations of 5-methoxy-2-thiouracil (5) and 5a with the sugar component 7 using the “silyl method” yield peracylated 5-methoxy-2-thiouridine (8) and 5-ethoxycarbonylmethoxy-2-thiouridine (8a), which under treatment with sodium methanolate/methanol afford title 5-methoxy-2-thiouridine (1) (s2mo5U) and 5-methoxycarbonylmethoxy-2-thiouridine (2) (s2mcmo5U), respectively