160204-91-1Relevant articles and documents
Enantioselective synthesis of dityrosine and isodityrosine via asymmetric phase-transfer catalysis
Lygo
, p. 1389 - 1392 (1999)
Application of N-anthracenylmethyl cinchonidinium chloride quaternary ammonium phase-transfer catalysts to the enantio- and diastereoselective synthesis of dityrosine and isodityrosine is reported. Under liquid-liquid phase-transfer conditions the key α-amino acid substituents are introduced with high enantioselectivity (≥95%e.e.).