Bachem & Novo Nordisk Redesign SPPS for Green Chemistry

In our studies in collaboration with Novo Nordisk, we set out to identify environmentally benign solvents suitable for large-scale SPPS of peptide therapeutics at ambient temperature by assessing reagent solubility, resin swelling, amino acid coupling and Fmoc-removal efficiency in a collection of REACH compatible neat solvents and selected binary solvent mixtures. These studies have shown that binary solvent mixtures are indeed viable alternatives.