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DNA-templated functional group transformations enable sequence-programmed synthesis using small-molecule reagents.

Kaori Sakurai1, Thomas M Snyder, David R Liu

  • 1Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA.

Journal of the American Chemical Society
|February 11, 2005
PubMed
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This study introduces DNA-templated synthesis for functional group transformations of DNA-linked azides into amines, acids, and thiols. This method allows sequence-specific diversification of small molecules using non-DNA-linked reagents, expanding DNA-templated organic synthesis capabilities.

Area of Science:

  • Organic Chemistry
  • Biochemistry
  • Synthetic Biology

Background:

  • DNA-templated synthesis (DTS) traditionally links reactants to DNA for directed coupling.
  • Tethering all reactants to DNA can be challenging or impossible for certain small molecules.
  • Expanding DTS to include non-DNA-linked reagents is crucial for broader applications.

Purpose of the Study:

  • To develop DNA-templated functional group transformations for template-linked azides.
  • To enable the use of non-DNA-linked small-molecule reagents in sequence-programmed synthesis.
  • To demonstrate sequence-specific diversification of small molecules via DTS.

Main Methods:

  • Developed efficient DNA-templated reactions for converting azides to amines, carboxylic acids, and thiols.

Related Experiment Videos

  • Applied these transformations to a mixture of four template-linked organic azides.
  • Utilized non-DNA-tethered small-molecule reagents (sulfonyl chloride, chloroformate, isocyanate, isothiocyanate).

    • Main Results:

    • Achieved sequence-specific transformation of four distinct DNA-linked azides into sulfonamides, carbamates, ureas, and thioureas.
    • Demonstrated high selectivity, producing only the four desired products without cross-reactivity.
    • Successfully employed small-molecule reagents not tethered to DNA.

    Conclusions:

    • Established a novel approach for DNA-programmed small molecule diversification.
    • Significantly expanded the scope of DNA-templated organic synthesis.
    • Enabled efficient and selective functional group transformations using non-DNA-linked reagents.