Total synthesis of antheliolide A

Area of Science:

• Organic Chemistry
• Natural Product Synthesis

Background:

• Marine natural products are a rich source of structurally unique compounds.
• Antheliolide A is a marine natural product with an undetermined absolute configuration.

Purpose of the Study:

• To achieve the first total synthesis of antheliolide A.
• To clarify the absolute configuration of antheliolide A.

Main Methods:

• A stereocontrolled synthetic pathway was developed.
• Key steps included diastereoselective bicyclization and efficient ring closures.
• The synthesis established stereocenters for the four-membered ring.

Main Results:

• The first total synthesis of antheliolide A (1) was accomplished.
• The synthesis yielded (+/-)-1, ent-1, and 1.
• The absolute configuration of antheliolide A was successfully determined.

Conclusions:

• The developed synthetic route is efficient and stereocontrolled.
• This work provides access to antheliolide A and its analogs.
• The synthesis clarifies the absolute configuration of this marine natural product.