作者:Frank Himmelsbach、Bernd S. Schulz、Thomas Trichtinger、Ramamurthy Charubala、Wolfgang Pfleiderer
DOI:10.1016/0040-4020(84)85103-0
日期:1984.1
aprotic solvents. 5'-O-Monomethoxytritylation (12,29,43) as well as phosphorylations at the 3'-OH group can be effected to give the corresponding 3'-(2,5-dichlorophenyl,/-nitrophenylethyl)-phosphotriesters (13,22,30,44) also in high yields. Oximate cleavage of the latter compounds to the phosphodiesters (14,24,32,46) and detritylation to the 5'-unblocked phosphotriesters (15,23,31,45) do not affect the
描述了用于合成寡核苷酸的新的单体结构单元的合成,该新的单体结构单元通过磷酸三酯方法进行合成,该方法包含对-硝基苯基乙基用于磷酸盐和糖苷配基的保护。在澳在鸟苷的酰胺官能团的阻断6可以通过Mitsunobu反应形成对应的O来实现6 - p -nitrophenylethyl衍生物(4,5,10)。糖保护胸苷(16)和尿苷(17)已经被在澳烷基化4以S Ñ 1型反应通过p在苯,以形成将O碳酸盐-nitrophenylethyl碘化银4 - p -nitrophenylethyl衍生物(18,19)。在-2'-脱氧胞苷(氨基的保护25)和胞苷(26)可以通过1-(直接进行p -nitrophenylethoxycarbonyl) -苯并三唑的DMF,得到相应的氨基甲酸酯(27,28)作为一种新的类型为N 4-酰化胞苷衍生物。p 2'-脱氧腺苷(33)和腺苷(34)中氨基的硝基苯基乙氧基羰基化作用需