title: Solvent extraction method used in separating the protected product of synthetic oligodeoxyribonucleotides.
abstract: A solvent extraction method for separating synthetic protected oligodeoxyribonucleotides was used in our laboratory based on the lipophilic property of the protecting group of 5'-OH of the oligomers. The extraction of synthetic products protected with MMTr is complete by ether or ether-chloroform (6:1 V/V) for mononucleosides, by chloroform for dinucleoside monophosphates, by dichloromethane:n-butanol (4:1 V/V) for trimer or tetramer, and is nearly complete by dichloromethane:n-butanol (2:1 V/V) for hexamer. The 5'-end phosphorylated nucleotides, oligonucleotides and their symmetrical pyrophosphates remain in water phase. The following synthetic products of protected oligodeoxyribonucleotides have been isolated with this method, all above 85% in purity: (Formula: see text).
mesh_terms: D001483:Base Sequence; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism; D004926:Escherichia coli / Q000201:enzymology; D007202:Indicators and Reagents; D008722:Methods; D009838:Oligodeoxyribonucleotides / Q000138:chemical synthesis*; D009841:Oligonucleotides / Q000138:chemical synthesis*; D010727:Phosphoric Diester Hydrolases; D012910:Snake Venoms; D012997:Solvents; D013329:Structure-Activity Relationship
chemical_list: D007202:Indicators and Reagents; D009838:Oligodeoxyribonucleotides; D009841:Oligonucleotides; D012910:Snake Venoms; D012997:Solvents; D012321:DNA-Directed RNA Polymerases; D010727:Phosphoric Diester Hydrolases