Crown ether derivatives of L-(3,4-dihydroxyphenyl)alanine: crowned DOPA
Abstract
L-[3,4-(1,4,7,10,13-pentaoxatridecamethylene)phenyl]alanine and L-[3,4-(1,4,7,10,13,16-hexaoxahexadecamethylene)phenyl]alanine have been synthesised without racemization and characterised spectroscopically.