S. Peyrottes et al., SYNTHESIS, BASE-PAIRING PROPERTIES AND NUCLEASE RESISTANCE OF OLIGOTHYMIDYLATE ANALOGS CONTAINING METHOXYPHOSPHORAMIDATE INTERNUCLEOSIDE LINKAGES, Nucleosides & nucleotides, 13(10), 1994, pp. 2135-2149
A dithymidine N-methoxyphosphoramidate was synthesized and incorporate
d into oligothymidylate analogs. The analogs form less stable duplexes
with poly dA and poly rA than the corresponding ''all diester'' oligo
mer. The instability is more pronounced with poly rA than with poly dA
. The analogs were found to be highly resistant to nucleases.