Abstract
The resolution of tryptophan, tyrosine and related compounds as their trimethyl-silylated N-trifluoroacetyl-L-prolyl amino acid n-butyl esters was studied by gas chromatography. It was found that tyrosine and 3, 4 dihydroxyphenylalanine were resolved, while α-methyl-3, 4 dihydroxyphenylalanine could not be resolved. The peaks of epinephrine, norepinephrine, metanephrine and normetanephrine, except for dopamine, were not observed. Tryptophan was not resolved completely.
