Polyketide Cyclizations for the Synthesis of Polyaromatics

Area of Science:

• Organic Chemistry
• Natural Product Synthesis
• Biomimetic Chemistry

Background:

• Polyketide synthase (PKS) enzymes produce diverse aromatic natural products through controlled folding and cyclization of poly-β-carbonyl chains.
• Synthetic strategies mimicking PKS can generate reactive polyketide chains for versatile aromatic scaffold synthesis.
• Current applications of biomimetic polyketide cyclizations are mainly in polyphenol natural product synthesis, with untapped potential for broader polyaromatic architectures.

Purpose of the Study:

• To highlight the advantages of employing polyketide logic in the retrosynthetic analysis of polycyclic aromatic scaffolds.
• To discuss the growing accessibility of necessary precursors for polyketide synthesis.
• To explore the potential of small-molecule catalysts in controlling polyketide cyclizations for generating polyaromatic scaffolds.

Main Methods:

• Retrosynthetic analysis incorporating polyketide folding principles.
• Development and utilization of synthetic methods for preparing reactive polyketide precursors.
• Application of small-molecule catalysts to direct polyketide cyclization pathways.

Main Results:

• Demonstration of polyketide logic as a powerful tool for accessing diverse polyaromatic structures.
• Increased availability of starting materials and intermediates for polyketide-based synthesis.
• Successful application of catalytic methods to control stereochemistry and regiochemistry in polyketide cyclizations.

Conclusions:

• Polyketide logic provides a versatile framework for the synthesis of complex polyaromatic scaffolds.
• Advances in precursor synthesis and catalysis are expanding the scope of biomimetic polyketide cyclizations.
• This approach holds significant promise for the efficient preparation of valuable aromatic compounds for various applications.