Synthesis of nucleosides with additional nucleobases

Area of Science:

• Medicinal Chemistry
• Organic Chemistry
• Molecular Biology

Background:

• Nucleosides are fundamental building blocks of nucleic acids.
• Modifications to nucleoside structures can alter DNA/RNA properties.
• Understanding structure-function relationships is key in molecular biology.

Purpose of the Study:

• To synthesize novel nucleosides with appended nucleobases.
• To investigate the impact of linker length on nucleoside properties.
• To evaluate the utility of these modified nucleosides in oligonucleotide applications.

Main Methods:

• Multi-step organic synthesis of modified nucleosides.
• Incorporation of synthesized nucleosides into oligonucleotide chains.
• Analysis of oligonucleotide structural stability, specifically three-way junctions.

Main Results:

• Successful synthesis of two distinct nucleosides featuring additional nucleobases at the 2 eal position.
• The nucleoside with a two-carbon linker was effectively integrated into oligonucleotides.
• Incorporation resulted in significant stabilization of a DNA three-way junction.

Conclusions:

• Novel nucleoside analogs with appended nucleobases are synthetically accessible.
• The two-carbon linked nucleoside demonstrates potential for stabilizing nucleic acid structures.
• These findings open avenues for designing nucleic acid-based therapeutics or diagnostics.