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Solid-Phase Total Synthesis of Plusbacin A3

Posted on 2022-03-16 - 12:09
The total synthesis of the depsipeptide natural product plusbacin A3 (1) utilizing solid-phase peptide synthesis (SPPS) was disclosed. A 3-hydroxy-proline derivative compatible with Fmoc SPPS was prepared by a diastereoselective Joullié–Ugi three-component reaction (JU-3CR)/hydrolysis sequence. After peptide elongation on the solid support, cleavage of the peptide from the resin, followed by macrolactamization and global deprotection, gave plusbacin A3 (1).

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