Cysteine-, Methionine- and Seleno-Cysteine-Proline Chimeras: Synthesis and Their Use in Peptidomimetics Design

Natural sulphurated amino acids are cysteine and methionine. Their importance in biological processes is largely known. Cysteine, plays a key role due to the thiol group, which represents a nucleophilic and easily oxidizable function. Synthetic methodologies to obtain Cysteine-, Methionineand Seleno-Cysteine-Proline chimeras are strongly desirable and particularly appealing in the field of organic chemistry.