We report an efficient trityl-directed regiospecific synthesis of 2,3-disubstituted-l-histdines and 2,3-disubstituted histamines starting from α-N-trifluoroacetyl-l-histidine methyl ester and α-N-trifluoroacetylhistamine respectively in five steps. # NIPER Communication no. 162.
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Chandana et al. (2003) studied this question.
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