Intra- and intermolecular nucleophilic phosphorous - sulfur bond cleavage. The reaction of fluoride ion with O-aryl-O, S-dialkylphosphorothioates, & the degradation of phosphorothioate linkage in di-ribonucleotides by the vicinal 2′-hydroxyl group.
作者:Christian Sund、Jyoti Chattopadhyaya
DOI:10.1016/s0040-4020(01)89215-2
日期:1989.1
adenylyl (3′→5′)-5′-thiouridines 12 and 13 were partially deprotected to 37 and 38, having a phosphorothioate linkage with a bridging sulfur [ribonucleoside-3′-O-PO2-S-5′-ribonucleoside] in order to examine the stability of this internucleotidyl linkage vicinal to a 2′ -hydroxyl function. The 2′-O-protected adenylyl(3′→5′)-5′- thiouridines 37 and 38 were found to be as stable as thymidylyl(3′→5′)-5′-thiothymiifine
O-芳基-O,S-dialkylphosphorothioates,如全保护腺苷酰基(3'→5') - 5'-硫代尿苷11,O-芳基- O-乙基-5'- thiouridyl硫代磷酸酯24,在治疗与过量在四氢呋喃-吡啶-水中(8:1:1 v / v / v)中对正四丁基氟化铵进行切割,使磷-硫键断裂,得到相应的O-烷基磷一氟酸酯20(74%)和30(75%)。此轻便,alkylphosphoromonofluoridates的新的制备已被发现是已经举例说明通过的O-芳基-O的转化一般的反应,S-dialkylphosphorothioates 26,27,28和29到相应的phosphorofluoridates 30(79%),(31+ 32(一起85%),33(63%)和34(90%),将完全保护的腺苷基(3'→5')-5'-硫尿苷12和13部分脱保护为37和38,具有硫代磷酸酯与桥连硫[核糖核苷-3'-O-PO
SUND, CHRISTIAN;CHATTOPADHYAYA, JYOTI, TETRAHEDRON, 45,(1989) N3, C. 7523-7544