How is Eupalinolide B (CAS: 877822-40-7) typically synthesized?

Eupalinolide B is typically synthesized through a peptide coupling reaction. The synthesis involves the stepwise addition of amino acids to a growing peptide chain using standard Fmoc solid-phase peptide synthesis methods. Commonly used coupling agents include HBTU and DIC, and the reaction is typically carried out in the presence of a base such as diisopropylethylamine (DIPEA). The yield can vary depending on the purity of starting materials and the efficiency of coupling reactions.