Improvement of Synthetic Pathways to Thalidomide Ester Derivatives
Résumé
Three synthetic approaches to N-substituted Thalidomide prodrugs from (S)-phtaloylglutamic acid, (S)-Boc-glutamic acid or phtaloylglutamic anhydride are described and compared. The most efficient method is a one-pot synthesis which allowed to obtain an ester derivative of Thalidomide with 67 % yield.