ASYMMETRIC-SYNTHESIS OF UNUSUAL AMINO-ACIDS - AN ENANTIOSELECTIVE SYNTHESIS OF THE 4 ISOMERS OF D-O-METHYL-2',BETA-DIMETHYLTROSINE AND L-O-METHYL-2',BETA-DIMETHYLTYROSINE
Gg. Li et al., ASYMMETRIC-SYNTHESIS OF UNUSUAL AMINO-ACIDS - AN ENANTIOSELECTIVE SYNTHESIS OF THE 4 ISOMERS OF D-O-METHYL-2',BETA-DIMETHYLTROSINE AND L-O-METHYL-2',BETA-DIMETHYLTYROSINE, Tetrahedron letters, 34(16), 1993, pp. 2565-2568
The four individual isomers of D- and L-O-methyl-2', beta-dimethyltyro
sines have been synthesized in high optical purity. The evidence for a
symmetric induction was confirmed by the X-ray analysis of one of the
key intermediates.