Straightforward Approach to Ferrocenyl Amino Acids and Peptides by Allylic Alk­ylation

Using the Ni-[(benzylprolyl)amino]benzophenone complex in the Glaser reaction for the synthesis of bis α-amino acids

Enantiomerically enriched (S)-α-amino acids were obtained. As the initial complex, the Schiff base Ni(ii) complexes were used. The target Ni(ii) complexes were disassembled and the amino acids were isolated with excellent enantioselectivities.

Non-stabilized enolates – versatile nucleophiles in transition metal-catalysed allylic alkylations

This review covers new developments in the transition metal-catalyzed allylic alkylations of non-stabilized enolates, preferentially generated from ketone, esters or amides.

Total syntheses and biological evaluation of miuraenamides

The miuraenamides, relatively simple representatives of a class of cyclodepsipeptides with high antitumor activity, can be easily and flexibly obtained by the concept of peptide modification. A reaction sequence consisting of an aldol reaction, oxidation, and methylation of the glycine subunit of the cyclodepsipeptides allows the incorporation of the unusual α,β-unsaturated dehydroamino acid in one of the last steps of the synthesis.