Protein carbohydrate fundamental considerations

Carbohydrates and polysaccharides, on the one hand, and peptides and proteins, on the other, have been considered as separate classes of natural products for a long time. Fundamental chemical methodology for the synthesis of both saccharides and peptides was developed by Emil Fischer et al. at the beginning of the 20th century. 1,2 However, the harsh conditions employed in early solution and solid-phase peptide synthesis hindered the combination of peptide and carbohydrate chemistry, i.e. glycopeptide synthesis. Considerable efforts were made to combine the two branches of natural product chemistry, and the state of the art within glycopeptide synthesis has improved dramatically during the last decades, as described in a number of reviews. 3 23,512"514 ... 

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