title: Synthesis of short RNA fragments by the benzotriazolyl phosphotriester approach.
abstract: Analytical and experimental evidence will be presented to show that addition of a slight excess of 2-chlorophenyl-0,0-bis[1-benzotriazolyl]phosphate to a properly 2',5'-protected ribonucleoside gives an intermediate 3'-phosphotriester, which, after addition of a 2'-protected ribonucleoside, affords a dimer containing solely a 3'-5'-internucleotide linkage. The above phosphorylation procedure has been used in the synthesis of the pentamer UpApCpGpC.
mesh_terms: D001483:Base Sequence; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D007202:Indicators and Reagents; D009841:Oligonucleotides / Q000138:chemical synthesis*; D009843:Oligoribonucleotides / Q000138:chemical synthesis*; D012313:RNA / Q000138:chemical synthesis*; D013329:Structure-Activity Relationship
chemical_list: D007202:Indicators and Reagents; D009841:Oligonucleotides; D009843:Oligoribonucleotides; D012313:RNA