Fluoro‐olefin in place of a peptide: Dipeptides analogues containing a fluoro‐olefin moiety in place of the peptide bond have been synthesized and introduced into the bioactive C‐terminal heptapeptide of the neuropeptide26RFa by SPPS. The fluoro‐olefin moiety is an effective mimic of the peptide bond that enhances peptide stability, has little impact on its conformation and slightly better bioactivity