A. Demesmaeker et al., REPLACEMENT OF THE PHOSPHODIESTER LINKAGE IN OLIGONUCLEOTIDES BY AN AMIDE - EFFECT OF BACKBONE LENGTH ON DUPLEX STABILITY WITH RNA COMPLEMENT, Bioorganic & medicinal chemistry letters, 7(4), 1997, pp. 447-452
Five dimers containing amide linkages instead of the natural phosphodi
ester linkage were synthesized and incorporated into oligonucleotides.
The length of the amide backbone was varied. The hybridization proper
ties of the modified oligonucleotides with RNA complements and their c
onformational analysis are described and compared to previously report
ed amide containing oligonucleotides. In addition, the synthesis of a
thioamide phosphoramidite dimer is reported. (C) 1997, Elsevier Scienc
e Ltd.