A Convenient Synthesis of N-Fluorenylmethoxycarbonyl-N-Methyl-l-
Cysteine Derivatives [Fmoc,Me-Cys(R)-OH]

Abstract

The synthesis of N-fluorenylmethoxycarbonyl-N,S-dimethyl-l-Cysteine (1) [Fmoc,Me-Cys(Me)-OH] and N-fluor­enylmethoxycarbonyl-N-methyl-S-acetamidomethyl-l-Cysteine (2) [Fmoc,Me-Cys(Acm)-OH] is reported. The synthesis is characterized by a convenient two-step procedure from (R)-thiazolidine-4-carboxylic acid (3) via reduction and subsequent protection. Crystals of 1, which have been analyzed by single-crystal X-ray crystallography, are obtained after a simple crystallization at the end of the process, without purification of intermediates.

amino acids - peptides - cysteine - protecting groups

References

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