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Herbicidal nucleosides from microbial sources.

B G Isaac1, S W Ayer, L J Letendre

  • 1Monsanto Agricultural Company, A Unit of Monsanto Company, St. Louis, MO 63198.

The Journal of Antibiotics
|July 1, 1991
PubMed
Summary
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Spectral analysis revealed the structures of five herbicidal nucleosides. Three novel compounds and two known compounds with previously unreported herbicidal activity were identified.

Area of Science:

  • Natural Product Chemistry
  • Biochemistry
  • Agrochemical Research

Background:

  • Nucleosides are vital biomolecules with diverse biological activities.
  • Herbicidal compounds are crucial for agricultural weed management.
  • Identifying novel natural products with herbicidal properties is of significant interest.

Purpose of the Study:

  • To determine the chemical structures of five naturally-occurring compounds exhibiting herbicidal activity.
  • To identify novel natural products with potential applications in agriculture.

Main Methods:

  • Structure elucidation using comprehensive spectral analysis (e.g., NMR, Mass Spectrometry).
  • Isolation and characterization of natural products from biological sources.

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Main Results:

  • The structures of three novel herbicidal nucleosides were determined: 5'-deoxyguanosine, coaristeromycin, and 5'-deoxytoyocamycin.
  • Two known nucleosides, coformycin and adenine 9-beta-D-arabinofuranoside, were identified as having herbicidal activity for the first time.

Conclusions:

  • The study expands the known repertoire of herbicidal natural products.
  • The identified compounds represent potential leads for developing new, naturally-derived herbicides.