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Updated: May 8, 2026

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
Published on: April 12, 2019
Synthesis and biophysical properties of constrained D-altritol nucleic acids (cANA)
Michael T Migawa1, Thazha P Prakash, Guillermo Vasquez
1Department of Medicinal Chemistry, Isis Pharmaceuticals, Inc., 2855 Gazelle Court, Carlsbad, California 92010, USA. mmigawa@isisph.com
Abstract:
The first synthesis of constrained altritol nucleic acids (cANA) containing antisense oligonucleotides (ASOs) was carried out to ascertain how conformationally restricting the D-altritol backbone-containing ASO (Me-ANA) would affect their ability to form duplexes with RNA. It was found that the thermal stability was reduced (cANA/RNA -1.1 °C/modification) compared to DNA/RNA, suggesting the constrained system results in a small destabilizing perturbation in the duplex structure.
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