A convergent and facile method has been developed for the preparation of hybrid sulfonophosphonodipeptides composed of 2-aminoalkanesulfonic acid and 1-aminoalkylphosphonic acid residues. A series of hybrid sulfonophosphonodipeptides were synthesized in satisfactory yields via the Mannich-type reaction of 2-(Cbz-amino)alkanesulfonamides, aldehydes, and phosphorus trichloride, followed by sequential hydrolysis. The reaction mechanism was proposed and verified by NMR tracing experiments.
- hybrid peptide
- Mannich reaction