RESUMO

Methanol dried over powdered 4 Å molecular sieves can be used for a selective mono-de-O-acetylation of the phenolic acetyl group of the per-O-acetyl protected brasilicardin A carbohydrate side chain. This reaction opens a practical procedure for a synthetic access to derivates of the immunosuppressive and cytotoxic natural product brasilicardin A.

Assuntos

Carboidratos , Acetilação , Processamento de Proteína Pós-Traducional