Synthesis of oligonucleotides via phosphoramidite approach utilizing 2-diphenylmethylsilylethyl (DPSE) as a phosphorus protecting group
作者:Vasulinga T. Ravikumar、Tadeusz K. Wyrzykiewicz、Douglas L. Cole
DOI:10.1016/s0040-4020(01)85503-4
日期:——
2-Diphenylmethylsilylethyl (DPSE) is a new protectinggroup for internucleotidic bonds in the synthesis of oligodeoxyribo nucleotides by the phosphoramidite approach. This group is stable to acidic conditions and can be removed under mild β-fragmentation conditions using aqueous ammonium hydroxide.
Synthesis of ISIS 2105 Containing the Abasic Site Model Compound 1,4-Anhydro-2-deoxy-D-Ribitol
作者:Vasulinga T. Ravikumar、Tadeusz K. Wyrzykiewicz、Douglas L. Cole
DOI:10.1080/15257779408009474
日期:1994.9
An indirect method for investigating evidence of the formation of full length deadenylated phosphorothioate oligonucleotide (lSIS 2105) as a degradation product is reported through synthesis of its deadenylated analog. Alternatively, use of Leumann's method for the synthesis of authentic deadenylated ISIS 2105 using the tert-butyldimethylsilyl protecting group at the anomeric hydroxyl function of the furanose ring failed in our hands.