New condensing reagents for stereospecific synthesis of dinucleoside monophosphate aryl esters
作者:E. Ohtsuka、Z. Tozuka、M. Ikehara
DOI:10.1016/s0040-4039(01)93020-5
日期:1981.1
Condensation of 5′-O-dimethoxytritylnucleoside 3′-O-(o-chlorophenyl) phosphates and 3′-O-benzoylnucleosides with a new condensing reagent, 2,4,6-triisopropylbenzenesulfonyl 5-(pyridin-2-yl) tetrazolide gave o-chlorophenyl ester of protected dinucleoside monophosphates which had a stereospecific configuration. The corresponding mesitylenesulfonyl derivative gave similar results.
5'-O-二甲氧基三苯甲基核苷3'-O-(邻氯苯基)磷酸酯和3'-O-苯甲酰基核苷与新的缩合试剂2,4,6-三异丙基苯磺酰基5-(吡啶-2-基)四唑化物缩合得到受保护的二核苷单磷酸的邻氯苯酯,具有立体特异性构型。相应的均三甲苯磺酰基衍生物给出了相似的结果。