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Trichodermaerin: a diterpene lactone from Trichoderma asperellum.

Suchada Chantrapromma1, Chotika Jeerapong2, Worrapong Phupong2

  • 1Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand.

Acta Crystallographica. Section E, Structure Reports Online
|May 15, 2014
PubMed
Summary

A novel diterpene lactone, trichodermaerin, was isolated from Trichoderma asperellum. Its complex tetra-cyclic structure and conformation were elucidated, revealing stabilization through C-H⋯O interactions.

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Area of Science:

  • Natural Product Chemistry
  • Organic Chemistry
  • Mycology

Background:

  • Trichoderma asperellum is a fungus known for producing various bioactive compounds.
  • Diterpene lactones represent a class of natural products with diverse biological activities.
  • Understanding the structural complexity of fungal metabolites is crucial for discovering new therapeutic agents.

Purpose of the Study:

  • To isolate and characterize a novel diterpene lactone from Trichoderma asperellum.
  • To elucidate the three-dimensional structure and conformational analysis of the isolated compound.
  • To investigate the stabilizing interactions within the molecule's architecture.

Main Methods:

  • Isolation of the compound using chromatographic techniques.
  • Structure elucidation through spectroscopic methods (e.g., NMR, Mass Spectrometry).
  • Conformational analysis using computational modeling and interpretation of structural data.

Main Results:

  • Isolation and identification of trichodermaerin (C20H28O3), a novel diterpene lactone.
  • Determination of a unique tetra-cyclic 6-5-7-5 ring system.
  • Detailed conformational analysis of individual rings (cyclohexanone, cyclopentane, cycloheptene, tetrahydrofuranone) and identification of C-H⋯O interactions stabilizing the 3D structure.

Conclusions:

  • Trichodermaerin is a structurally novel diterpene lactone isolated from Trichoderma asperellum.
  • The compound possesses a complex tetra-cyclic framework with specific ring conformations.
  • Intramolecular C-H⋯O interactions play a significant role in stabilizing the three-dimensional architecture of trichodermaerin.