206861-69-0Relevant articles and documents
Synthesis and hybridization properties of an acyclic achiral phosphonate DNA analogue
Kehler, Jan,Henriksen, Ulla,Vejbjerg, Helene,Dahl, Otto
, p. 315 - 322 (2007/10/03)
Protected N-(2-hydroxyethyl)-N-(nucleobase- acetyl)aminomethanephosphonic acids (6a-d) of all four DNA nucleobases have been prepared and oligomerized by solid-phase synthesis. Four DNA decamers containing 1-10 of these 'PPNA' monomers were prepared and evaluated by T(m) measurements (medium salt) for binding to their DNA and RNA complements. One central modification reduced the binding strongly (?T(m) =-10 °C), but contiguous PPNA monomers gave smaller effects, and the all-PPNA decamer bound to RNA with a ?T(m) of -1.2°C per modification. Thus PPNA oligomers are inferior DNA and RNA binders compared to the closely related and strongly binding PNA oligomers.