title: Silica gel: an improved support for the solid-phase phosphotriester synthesis of oligonucleotides.
abstract: The phosphotriester method for the stepwise synthesis of deoxyoligonucleotides has been employed using HPLC-grade silica gel (Porasil B) as the solid support. The procedure results in a convenient flow-through system for the synthesis of oligomers where all the reaction steps including the zinc bromide method of detritylation are compatible with the selected support. Deoxyoligonucleotides of 25-30 nucleotides in length can be synthesized in high yields utilising stable phosphotriester intermediates. Ease of handling of the solid support allows convenient synthesis of mixed oligonucleotide sequences.
mesh_terms: D001483:Base Sequence; D002851:Chromatography, High Pressure Liquid; D007202:Indicators and Reagents; D009838:Oligodeoxyribonucleotides / Q000138:chemical synthesis*; D009841:Oligonucleotides / Q000138:chemical synthesis*; D010755:Organophosphates; D058428:Silica Gel; D012822:Silicon Dioxide
chemical_list: D007202:Indicators and Reagents; D009838:Oligodeoxyribonucleotides; D009841:Oligonucleotides; D010755:Organophosphates; D058428:Silica Gel; D012822:Silicon Dioxide