作者:Xiaolin Wu、Stefan Pitsch
DOI:10.1002/1522-2675(20000607)83:6<1127::aid-hlca1127>3.0.co;2-b
日期:2000.6.7
The preparation of building blocks for the incorporation of 6'-0-(5-bromopentyl)-substituted beta-D-allofuranosylnucleosides and 2'-O-[(3-bromopropoxy)methyl]-substituted ribonucleosides into oligonucleotide sequences is presented (Schemes 1 and 2). These reactive building blocks can be modified with a variety of soft nucleophiles while the (fully protected) sequence is still attached to the solid support. As an example of this strategy, we carried out some preliminary solid-phase substitution and conjugation reactions with DNA sequences containing a 2'-O-[(3-bromopropoxy)methyl]-substituted ribonucleoside (Scheme 3) and determined the pairing properties of duplexes obtained therefrom.