Synthesis of mixed oligodeoxyribonucleotides following the solid phase method

Area of Science:

• Organic Chemistry
• Nucleic Acid Chemistry
• Biotechnology

Background:

• Solid-phase synthesis is crucial for creating DNA and RNA fragments.
• Controlling the composition and yield of mixed oligonucleotides remains a challenge.

Purpose of the Study:

• To develop an efficient method for synthesizing mixed dimers, trimers, and oligonucleotides.
• To investigate the relationship between reagent concentration and product yield.
• To study the separation of mixed oligonucleotides.

Main Methods:

• Synthesis of mixed oligonucleotides on a solid support.
• Utilized monomeric protected nucleoside phosphochloridites (1a-d).
• Analyzed product mixtures using reversed-phase C18 column chromatography.

Main Results:

• Successfully developed a method for synthesizing mixed oligonucleotides.
• Demonstrated a direct correlation between the concentration of four key reagents and the yields of different oligomers in the mixture.
• Investigated and characterized the separation of these mixed oligomers.

Conclusions:

• The developed method provides a controllable approach for mixed oligonucleotide synthesis.
• Reagent concentration is a critical factor influencing product distribution.
• Reversed-phase C18 chromatography is effective for separating synthesized mixed oligonucleotides.