CONVERSION METHOD OF TREO-(2R,3R)-2-HYDROXY-3-(2-ì (54) -AMINOPHENYLTHION)-3-(4-METHOXYPHENYL)PROPIONIC ACID DERIVATIVES,ì DILTIAZEM MADE FROM THESE INTERMEDIATES

摘要

A process which allows the re-use of compounds of formula in diltiazem synthesis through a process of conversion to a mixture of enantiomers III-(2R,3R) and III-(2S,3S) is described.