SYNTHESIS OF PEPTIDES CONTAINING A SULFINAMIDE OR A SULFONAMIDE TRANSITION-STATE ISOSTERE

A versatile synthesis of peptides incorporating the sulfonamide or sulfonamide transition-state analogue is described. Apart from the easily accessible Gly-Xxx isosteres used as haptens to elicit catalytic antibodies, other amino acids than Gly can be prepared by alpha-alkylation of the sulfonamide containing peptides. This is illustrated with the synthesis of a potential HIV-protease inhibitor 27.