An Improved Method for the Preparation of Protected (R)-2-Methylcysteine: Solution-Phase Synthesis of a Glutathione Analogue
作者:Douglas Masterson、Brant Kedrowski、Amanda Blair
DOI:10.1055/s-0030-1259021
日期:2010.12
A synthetic method for the preparation of (R)-2-methylcysteine that dramatically improves the overall yield of this important unnatural amino acid has been refined. The key steps in the preparation of (R)-2-methylcysteine were improved such that necessary intermediates were prepared in high yields and of sufficient purity to avoid the need for distillation or column chromatography. The (R)-2-methylcysteine was prepared (>90% ee) in appropriately protected form and used in a novel solution phase synthesis of a glutathione analogue.