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A concise synthesis of herbertenolide.

Jiadong Hu1, Kai Ji2, Lihong Yan2

  • 1School of Medicinal and Chemical Engineering, Yangling Vocational & Technical College, 24 Weihui Road, Yangling 712100, Shaanxi, China.

Organic & Biomolecular Chemistry
|March 1, 2022
PubMed
Summary

This study presents a new method for synthesizing herbertenolide using oxidative ring contraction and asymmetric Michael addition. These techniques efficiently create complex carbon structures, paving the way for new drug discovery.

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Area of Science:

  • Organic Chemistry
  • Synthetic Chemistry
  • Medicinal Chemistry

Background:

  • Herbertenolide is a natural product with potential medicinal applications.
  • Efficient synthesis of complex molecules with quaternary carbon centers is challenging.

Purpose of the Study:

  • To develop a concise synthesis of (±)-herbertenolide.
  • To establish a stereoselective method for constructing contiguous quaternary carbon centers (CQCCs).
  • To achieve a formal synthesis of (+)-ent-herbertenolide.

Main Methods:

  • Hydrogen peroxide-mediated oxidative ring contraction of cyclic α-formyl ketones.
  • Scandium triflate/chiral N,N'-dioxide catalyzed asymmetric Michael addition of benzofuranone to MVK.

Main Results:

  • Stereospecific construction of CQCCs was achieved.
  • A chiral aromatic quaternary carbon center was forged.
  • The synthesis of (+)-ent-herbertenolide was formally accomplished.

Conclusions:

  • The developed strategy provides an efficient route to herbertenolide and its analogs.
  • The methods employed are valuable for constructing complex molecular architectures.
  • This work contributes to the field of natural product synthesis and drug discovery.