CHIRAL SYNTHESIS OF N-{3,4-DIFLUORO-2-(2-FLUORO-4-IODOPHENYL)AMI NO-6-METHOXYPHENYL}-1-2,3-DIHYDROXY-PROPYLCYCLOPROPANESULFONA MIDES.

摘要

The present invention relates to a novel enantioselective method of preparing (S)- and (R)-enantiomers of N-{3,4-difluoro-2-[(2-fluoro-4-iodophenyl)amino]-6-5 methoxyphenyl}-1-[2,3-dihydroxy-propyl]cyclopropanesulfonamide, to novel intermediate compounds, and to the use of said novel intermediate compounds for the preparation of said (S)- and (R)-enantiomers of N-{3,4-difluoro-2-[(2- fluoro-4-iodophenyl)amino]-6-methoxyphenyl}-1-[2,3-dihydroxy- propyl]cyclopropanesulfonamide.