3.4 The case of coibamide A The cyanobacterial coibamide A (9) is a highly N,O-methylateddepsipeptide (1287 Da), comprising 11 residues with 13 stereogenic centers, that was originally proposed as the “all-L”diastereomer (10) in 2008.64 Ensuing attempts at total synthesiswere initially plagued by inefficient coupling of the sterically