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Furanoid lignans from Larrea tridentata.

C Konno1, Z Z Lu, H Z Xue

  • 1Program for Collaborative Research in the Pharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago 60642.

Journal of Natural Products
|March 1, 1990
PubMed
Summary

Six new furanoid lignans were isolated from Larrea tridentata. Their structures were determined using physical and spectroscopic methods, with nuclear Overhauser effect experiments crucial for stereochemistry assignment.

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Area of Science:

  • Phytochemistry
  • Natural Products Chemistry
  • Organic Chemistry

Background:

  • Larrea tridentata, commonly known as creosote bush, is a plant species known for its rich chemical constituents.
  • Lignans are a diverse class of phenolic compounds found in plants, exhibiting a wide range of biological activities.

Purpose of the Study:

  • To isolate and characterize novel lignan compounds from Larrea tridentata.
  • To elucidate the structures and stereochemistry of these newly identified natural products.

Main Methods:

  • Extraction and isolation of compounds from the leaves and stems of Larrea tridentata.
  • Structure elucidation using comprehensive physical and spectroscopic analyses.
  • Application of 1D and 2D nuclear Overhauser effect (nOe) experiments for stereochemical determination.

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Main Results:

  • Isolation of six new furanoid lignans, designated as compounds 1-6.
  • Complete structural determination of the isolated lignans.
  • Successful assignment of the stereochemistry for all six compounds, aided by nOe data.

Conclusions:

  • The study successfully identified and characterized six new furanoid lignans from Larrea tridentata.
  • The findings contribute to the understanding of the phytochemical diversity of Larrea tridentata.
  • The detailed structural and stereochemical information provides a basis for further investigation into the biological activities of these compounds.