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Thailandepsin a.

Cheng Wang1, Yi-Qiang Cheng

  • 1Department of Biological Sciences, Department of Chemistry and Biochemistry, Univeristy of Wisconsin-Milwaukee, PO Box 413, Milwaukee, WI 53201, USA.

Acta Crystallographica. Section E, Structure Reports Online
|January 6, 2012
PubMed
Summary
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Newly discovered thailandepsin A, a bicyclic depsipeptide, exhibits potent histone deacetylase inhibition and broad-spectrum anti-proliferative effects. Its absolute configuration and crystal structure reveal key hydrogen bonding interactions.

Area of Science:

  • Natural Products Chemistry
  • Structural Biology
  • Pharmacology

Background:

  • Thailandepsin A is a novel bicyclic depsipeptide isolated from natural sources.
  • This compound has demonstrated significant biological activities, including histone deacetylase inhibition and anti-proliferative effects.
  • Understanding its structure is crucial for elucidating its mechanism of action.

Purpose of the Study:

  • To determine the absolute configuration of thailandepsin A.
  • To elucidate the crystal structure of thailandepsin A.
  • To investigate the intramolecular and intermolecular interactions within the crystal structure.

Main Methods:

  • X-ray crystallography
  • Anomalous dispersion analysis

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  • Stereochemical analysis of chiral centers

    • Main Results:

    • The absolute configuration of all chiral centers in thailandepsin A was determined.
    • The crystal structure revealed the presence of intramolecular N-H⋯O and N-H⋯S hydrogen bonds.
    • Intermolecular N-H⋯O and O-H⋯O hydrogen bonds were also observed in the crystal packing.

    Conclusions:

    • The detailed structural elucidation of thailandepsin A provides a foundation for further pharmacological studies.
    • The identified hydrogen bonding networks may play a role in the compound's biological activity.
    • This research contributes to the understanding of complex natural products and their potential therapeutic applications.