Nf. Krynetskaya et al., ANTISENSE OLIGONUCLEOTIDES WITH 3'-TERMIN AL AND 5'-TERMINAL 1-(BETA-D-2'-DEOXY-THREO-PENTAFURANOSYL)THYMIN, Bioorganiceskaa himia, 20(6), 1994, pp. 669-675
Oligonucleotides with 3'- and 5'-terminal 1-(beta-D-2'-deoxy-threopent
afuranosyl)thymin residues (inversion at C3'-atom) were obtained by th
e automatic phosphoramidite synthesis. The modifications protect oligo
nucleotides from the nuclease degradation and do not affect the stabil
lity of nucleic acid duplexes.