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Related Concept Videos

Nucleic Acid Structure01:25

Nucleic Acid Structure

The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms  a 5′ to 3′ phosphodiester linkage.
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Chemical Triphosphorylation of Oligonucleotides
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A universal and recyclable solid support for oligonucleotide synthesis.

François Morvan1, Albert Meyer, Jean-Jacques Vasseur

  • 1Université Montpellier, Montpellier, France.

Current Protocols in Nucleic Acid Chemistry
|April 23, 2008
PubMed
Summary

This study introduces a recyclable solid support for synthesizing oligodeoxyribonucleotides using a modified phosphoramidite method. This approach enables efficient oligonucleotide synthesis and solid support reuse, reducing costs and waste.

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Area of Science:

  • Organic Chemistry
  • Biochemistry
  • Molecular Biology

Background:

  • The synthesis of oligodeoxyribonucleotides is crucial for molecular biology and therapeutics.
  • Current methods often involve non-reusable solid supports, increasing costs and environmental impact.
  • There is a need for efficient and sustainable methods for oligonucleotide synthesis.

Purpose of the Study:

  • To develop a modified phosphoramidite method for synthesizing oligodeoxyribonucleotides.
  • To utilize a universal and reusable hydroxyl solid support.
  • To enable efficient cleavage and recycling of the solid support after synthesis.

Main Methods:

  • A modified phosphoramidite approach using deoxyribonucleoside tert-butyl and cyanoethyl phosphoramidites.
  • Introduction of an H-phosphonate diester linkage using nucleoside tert-butyl phosphoramidite.
  • Cleavage of the H-phosphonate diester linker by transesterification under mild basic conditions.

Main Results:

  • Successful synthesis of oligodeoxyribonucleotides on a reusable hydroxyl solid support.
  • Efficient cleavage of the H-phosphonate diester linker, yielding free 3'- and 5'-hydroxyls and the original solid support.
  • Demonstration of solid support recyclability for subsequent synthesis cycles.
  • Capability to introduce internal H-phosphonate diester linkages for producing two separate oligonucleotides.

Conclusions:

  • The modified phosphoramidite method provides a sustainable and cost-effective approach for oligodeoxyribonucleotide synthesis.
  • The reusable solid support significantly enhances the efficiency and environmental friendliness of the synthesis process.
  • This method offers versatility, allowing for both standard oligonucleotide synthesis and the production of multiple cleaved products.