Nucleic Acid Oligomer Deprotection Using Fluoride Ion Cleavage
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Solution Overview
Problem
Existing methods for synthesizing nucleic acid oligomers, particularly those containing ribose, are inefficient due to multi-step processes that compromise purity, including the elongation, cleavage, and deprotection steps.
Innovation Solution
A method involving the use of fluoride ions in the presence of a radical reaction inhibitor to effectively deprotect hydroxy groups in ribose-containing nucleic acid oligomers, allowing for an efficient production process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multi-step synthesis process (elongation, cleavage, deprotection) is used to produce nucleic acid oligomers, then the oligomers can be synthesized on solid support, but the purity is not satisfactory and synthesis efficiency is low
Solution Approach 1:
The patent combines the deprotection step with the cleavage step into a single simultaneous operation using fluoride ions. Both the removal of protecting groups from hydroxy groups and the cleavage of the oligomer from the solid support occur in the same reaction step, eliminating the need for separate sequential operations and thereby improving both purity and synthesis efficiency
Solution Approach 2:
The patent extracts and removes the protecting groups from the hydroxy groups of ribose using fluoride ions. This selective removal of unnecessary protecting groups simplifies the molecular structure and improves the purity of the final nucleic acid oligomer product without requiring additional purification steps
2Reliability
If protecting groups are used during solid-phase synthesis, then the synthesis can proceed through multiple steps, but the deprotection step reduces overall synthesis efficiency
Solution Approach 1:
The patent changes the chemical parameters of the deprotection reaction by using fluoride ions as the deprotecting agent. This parameter change enables simultaneous deprotection and cleavage, reducing the time required for the deprotection step while maintaining the reliability of the synthesis process through selective chemical reactivity
Solution Approach 2:
The protecting groups are designed to be removable by fluoride ions, which allows the deprotection action to be performed preliminarily alongside the cleavage step. This preliminary deprotection prevents subsequent additional deprotection steps from being necessary, thereby reducing overall time loss
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enhances the purity and efficiency of nucleic acid oligomer synthesis by effectively removing protecting groups, improving overall production processes.
Implementation Method 1
by contacting a nucleic acid oligomer with a fluoride ion in the presence of a radical reaction inhibitor, protecting groups of hydroxy groups in ribose contained in the nucleic acid oligomer can be effectively deprotected
Implementation Method 2
contacting a nucleic acid oligomer with a fluoride ion in the presence of a radical reaction inhibitor
Data Source
AI summary
The present invention provides an efficient production method for a nucleic acid oligomer, in particular, a production method for a nucleic acid oligomer which comprises contacting a particular nucleic acid oligomer with a fluoride ion in the presence of a radical reaction inhibitor.