3H-1,2-benzothiaselenol-3-one. A new selenizing reagent for nucleoside H-phosphonate and H-phosphonothioate diesters
作者:Jacek Stawiński、Mats Thelin
DOI:10.1016/s0040-4039(00)60887-0
日期:1992.11
A new selenium-transferring reagent, 3H-1,2-benzothiaselenol-3-one (1), has been developed for the conversion of nucleoside H-phosphonate and nucleoside H-phosphonothioate diesters into the corresponding seleno analogues. The reagent is soluble in common organic solvents and shows an enhanced rate of selenium transfer compared to elemental selenium or potassium selenocyanate. Selenization with the
已经开发了一种新的硒转移试剂3 H -1,2-苯并硫代噻吩酚-3-酮(1),用于将核苷H-膦酸酯和核苷H-膦硫代酸酯二酯转化为相应的硒类似物。该试剂可溶于常见的有机溶剂,与元素硒或硒氰酸钾相比,硒的转移速率更高。试剂1的硒化是立体定向的,最有可能在磷中心保留构型而发生。
Nucleoside H-phosphonates. 14. Synthesis of nucleoside phosphoroselenoates and phosphorothioselenoates via stereospecific selenization of the corresponding H-phosphonate and H-phosphonothioate diesters with the aid of new selenium-transfer reagent, 3H-1,2-benzothiaselenol-3-one
作者:Jacek Stawinski、Mats Thelin
DOI:10.1021/jo00080a021
日期:1994.1
An efficient conversion of nucleoside H-phosphonate and nucleoside H-phosphonothioate diesters into the corresponding phosphoroselenoates and phosphorothioselenoates was achieved with a new selenium-transferring reagent, 3M-1,2-benzothiaselenol-3-one (BTSe, 1). The reagent is soluble in common organic solvents and shows an enhanced rate of selenium transfer compared to elemental selenium or potassium selenocyanate. The reaction was found to be stereospecific and occurs with retention of configuration at the phosphorus center. BTSe also proved to be effective in the conversion of phosphite triesters into the corresponding phosphoroselenoates under reactions conditions which are compatible with both solution- and solid-phase synthesis of oligonucleotides.