Synthesis of [2-14C,5-3H]cytosine and [2-14C,5-3H]uracil via bromination and catalytic bromine-tritium gas exchange
作者:Takeyoshi Asano、Reiko Kiritani
DOI:10.1002/jlcr.2580340704
日期:1994.7
micro-scale experiments, [2-14C,5-3H]cytosine and [2-14C,5-3H] uracil were synthesized via bromination and catalytic Br-3H exchange reaction with the use of [2-14C]-cytosine and-uracil and tritium gas. The double labelling percentages of these products were 70 and 26, respectively. It was assumed that [2-14C,5-Br] uracil was subjected to reaction with hydrogen atom originally adsorbed on a palladium catalyst
在微尺度实验中,[2-14C,5-3H]胞嘧啶和[2-14C,5-3H]尿嘧啶通过溴化和催化Br-3H交换反应合成,使用[2-14C]-胞嘧啶和-尿嘧啶和氚气。这些产品的双重标签百分比分别为 70 和 26。假设[2-14C,5-Br]尿嘧啶与最初吸附在钯催化剂上的氢原子发生反应。这在较小程度上适用于 [2-14C,5-Br] 胞嘧啶。胞嘧啶和尿嘧啶嘧啶环第5位的3H标记百分比分别为96和73。针对产物的分析和纯化,研究了使用C18反相柱和NaH2PO4水溶液或H2O/甲醇混合物作为洗脱液的HPLC洗脱条件。