-Carbonylamides in peptide chemistry.  -Aminoenones and  -aminoenediones from N-acetoacetyl derivatives of secondary amino acids.
D000577:Amides / Q000138:chemical synthesis*; D009682:Magnetic Resonance Spectroscopy; D009904:Optical Rotation; D010455:Peptides / Q000138:chemical synthesis*; D010456:Peptides, Cyclic / Q000138:chemical synthesis; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
D000577:Amides; D010455:Peptides; D010456:Peptides, Cyclic