Abstract
Peptide nucleic acid (PNA) is a DNA analog able to form hybridization complexes with complementary DNA or RNA strands. Many PNAs have been described in recent years, particularly chiral PNA analogs. Chiral heteronucleotide ONA (Orn backbone PNA) is an important tool in the antisensing field, but was not been fully explored yet. In the present work, we performed studies toward the synthesis of chiral heteronucleotide ONA sequences by utilizing a Fmoc/Boc-based submonomer approach on solid support. The desired oligomers with different nucleic content and length were obtained in very good yields and high purity. Specific binding to the complimentary ssDNA oligomers was demonstrated.
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