Polyester and N-Methyl Analogues of Peptide Nucleic Acids: Synthesis and Hybridization Properties

Synthesis and characterization of a novel ester-based nucleoamino acid for the assembly of aromatic nucleopeptides for biomedical applications

In this work, we report a technological approach to a novel Fmoc-protected nucleoamino acid, based on l-tyrosine, carrying the DNA nucleobase on the hydroxyl group by means of an ester bond, suitable for the solid-phase synthesis of novel aromatic nucleopeptides of potential interest in biomedicine. After ESI-MS and NMR characterization this building block was used for the assembly of a thymine-functionalized tetrapeptide, composed of nucleobase-containing and underivatized l-tyrosine moieties alternated in the backbone.

[N-azidomethylbenzoyl blocking group in the phosphotriester synthesis of oligonucleotides]

An effective modification of phosphotriester method for automatic synthesis of DNA and RNA fragments using O-nucleophilic intramolecular catalysis and 2-(azidometil)benzoyl group to protect amino groups of heterocyclic bases of nucleotides is described.

Synthesis and hybridization studies of a 5-aminopentanoic acid nucleobase (APN) dimer

We have prepared a 5-aminopentanoic acid nucleobase (APN) dimer and investigated its hybridization capabilities to complementary DNA using both UV melting and NMR techniques.