The ferrocenylmethyl (Fem) group may be used to influence the secondary structure of peptide derivatives. It can be incorporated directly and easily during the synthesis of peptides. The severe solubility problems often encountered in peptide chemistry can be solved by the use of the Fem group. Furthermore, its strong yellow color facilitates the preparative workup, especially the chromatographic purification, of the products.
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Eckert et al. (1986) studied this question.
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