Postsynthetic On-Column 2' Functionalization of RNA by Convenient Versatile Method.

Area of Science:

• Chemical Synthesis
• Oligonucleotide Chemistry
• RNA Modification

Background:

• Site-specific modification of RNA is crucial for developing novel nucleic acid-based therapeutics and research tools.
• Existing methods for RNA functionalization often face limitations in scope and efficiency.

Purpose of the Study:

• To develop a universal and straightforward strategy for the chemical synthesis of modified oligoribonucleotides.
• To enable site-specific introduction of diverse functional groups at the 2 ahydroxyl position of ribose.

Main Methods:

• On-column synthesis utilizing nucleotide phosphoramidites with orthogonal 2 ahydroxyl protecting groups (TC and tBDMS).
• Solid-phase synthesis of RNA followed by selective deprotection.
• Post-synthetic functionalization of the exposed 2 ahydroxyl group.

Main Results:

• Demonstrated a convenient and versatile method for tailoring RNA molecules.
• Successfully synthesized a series of RNAs with diverse 2 ahydroxyl functionalities.
• The synthesized modified RNAs were characterized for their physicochemical properties.

Conclusions:

• The developed strategy offers a powerful approach for site-specific RNA modification.
• This method facilitates the introduction of a wide range of linkers and functional groups onto RNA.
• The synthesized modified oligoribonucleotides hold potential for various applications in chemical biology and medicine.