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A new linkage for solid phase synthesis of oligodeoxyribonucleotides
Nucleic Acids Research
|April 25, 1985
Summary
Researchers developed a new method for synthesizing DNA using a stable urethane linkage on a solid support. This approach improves yields and simplifies the process for creating oligodeoxyribonucleotides.
Area of Science:
- Organic Chemistry
- Biochemistry
- Molecular Biology
Background:
- Solid-phase synthesis of oligodeoxyribonucleotides is crucial for molecular biology and diagnostics.
- Traditional methods often rely on ester linkages, which can be prone to hydrolysis.
- Preparation of succinyl-linked supports requires multiple purification steps.
Purpose of the Study:
- To develop a more stable and efficient method for attaching nucleosides to solid supports for DNA synthesis.
- To improve the overall yield and simplify the process of oligodeoxyribonucleotide synthesis.
Main Methods:
- Utilized an aryl diisocyanate to form a urethane linkage between a protected 2'-deoxyribonucleoside and an alkylamine-functionalized controlled pore glass support.
- Employed a two-step procedure for nucleoside attachment, avoiding the need for intermediate succinate preparation and purification.
Main Results:
- Successfully synthesized oligodeoxyribonucleotides using the novel urethane-linked support.
- Demonstrated substantially higher yields compared to traditional ester-linked supports due to the increased stability of the urethane bond.
- Synthesized over twenty different oligodeoxyribonucleotides using this new methodology.
Conclusions:
- The urethane linkage provides a more stable and efficient alternative to ester linkages in solid-phase DNA synthesis.
- This simplified two-step procedure offers a robust platform for the routine synthesis of oligodeoxyribonucleotides.
- The method has been validated through the successful synthesis of numerous DNA sequences.