Transforming terpene feedstock into polyketide architecture

Area of Science:

• Organic Chemistry
• Catalysis
• Synthetic Methodology

Background:

• Acyclic terpene acetates are versatile building blocks.
• Modifications of these terpenes are crucial for synthesizing complex molecules.
• Existing methods for functionalizing terpenes can be limited.

Purpose of the Study:

• To develop a novel copper-catalyzed method for synthesizing skipped 1,4-dienes.
• To enable bidirectional modifications of acyclic terpene acetates.
• To facilitate the transfer of valuable subunits into complex polyketides.

Main Methods:

• Utilizing copper catalysis for the reaction between allylic acetates and vinyl-Grignard reagents.
• Employing skipped 1,4-diene synthesis strategy.
• Applying the method to acyclic terpene acetates.

Main Results:

• Successfully synthesized skipped 1,4-dienes.
• Demonstrated bidirectional modification of acyclic terpene acetates.
• Showcased the transfer of trisubstituted double bond containing subunits into complex polyketides.
• Utilized inexpensive bulk terpenes as starting materials.

Conclusions:

• The developed Cu-catalyzed method is effective for synthesizing skipped 1,4-dienes.
• This methodology provides a key route for modifying acyclic terpenes.
• The approach facilitates the incorporation of complex structural motifs derived from terpenes into polyketides.