New acid photogenerators based on thioxanthen-9-one sulfonium derivatives for detritylation in the oligonucleotide synthesis
作者:V. V. Shelkovnikov、V. A. Loskutov、E. V. Vasil’ev、N. V. Shekleina、V. A. Ryabinin、A. N. Sinyakov
DOI:10.1007/s11172-011-0087-x
日期:2011.3
Photochemical activity of a number of cationic thioxanthen-9-one derivatives for the formation of the trityl cation was studied, which resulted in the selection of compounds suitable for photodetritylation. 10-(4-Heptyloxyphenyl)-9-oxo-2-(N,N,N-triethylammonio)methyl-9H-thioxanthenium bis(hexafluorophosphate) and 2-methyl-, 2-(2-methyl-1-propanoyl-2-tosyl)-, 1-chloro-4-propoxy-, and 2,4-diethyl-10
研究了许多阳离子 thioxanthen-9-one 衍生物形成三苯甲基阳离子的光化学活性,从而选择了适合光脱三苯甲基化的化合物。10-(4-Heptyloxyphenyl)-9-oxo-2-(N,N,N-triethylammonio)methyl-9H-thioxanthenium bis(hexafluorophosphate) and 2-methyl-, 2-(2-methyl-1-propanoyl-2) -tosyl)-、1-chloro-4-propoxy- 和 2,4-diethyl-10-(4-heptyloxyphenyl)-9-oxo-9H-thioxanhenium 六氟磷酸盐被发现是 5'-O- 脱三苯甲基化的光活化剂(4,4'-二甲氧基三苯甲基)胸苷。脱三苯甲基化反应在二氯甲烷中最有效。2,4-Diethyl-10-(4-heptyloxyphenyl)-9-