Synthesis of Fasicularin

Area of Science:

• Organic Chemistry
• Marine Natural Products Synthesis

Background:

• Marine alkaloids represent a class of complex natural products with diverse biological activities.
• Fasicularin is a tricyclic marine alkaloid whose total synthesis presents significant stereochemical challenges.

Purpose of the Study:

• To achieve the first total synthesis of the marine alkaloid fasicularin.
• To develop and showcase novel synthetic strategies for complex polycyclic structures.

Main Methods:

• Stereoselective synthesis of a key aza-spirocyclic BC-ring precursor.
• Construction of the A-ring incorporating stereocontrolled installation of the C2 hexyl group.

Main Results:

• Successful completion of the total synthesis of fasicularin.
• Demonstration of a robust and stereocontrolled approach to the fasicularin core structure.

Conclusions:

• The developed synthetic route provides access to fasicularin and potentially related analogs.
• This work expands the synthetic toolkit for constructing complex marine alkaloids.