摘要:
The invention concerns a process for preparing unsaturated 2-oxo-1-pyrrolidine useful in methods for the preparation of S-α-ethyl-2-oxo-1-pyrrolidine acetamide.
摘要:
The invention concerns 2-oxo-1-pyrrolidine derivatives and a process for preparing them and their uses. The invention also concerns a process for preparing α-ethyl-2-oxo-1-pyrrolidine acetamide derivatives from unsaturated 2-oxo-1-pyrrolidine derivatives. Particularly the invention concerns novel intermediates and their use in methods for the preparation of S-α-ethyl-2-oxo-1-pyrrolidine acetamide.
摘要:
The invention concerns 2-oxo-1-pyrrolidine derivatives of general formula (B. geometrical isomers, enantiomers, diastereoisomers, mixtures of each of these and pharmaceutically acceptable salts thereof. wherein R 1 is methyl, R 2 and R 4 are hydrogen. R 3 is alkyl or haloalkenyl, and X is -COOH. -COOMe or -COOEt.
摘要:
The invention concerns 2-oxo-1-pyrrolidine derivatives and a process for preparing them and their uses. The invention also concerns a process for preparing α-ethyl-2-oxo-1-pyrrolidine acetamide derivatives from unsaturated 2-oxo-1-pyrrolidine derivatives. Particularly the invention concerns novel intermediates and their use in methods for the preparation of S-α-ethyl-2-oxo-1-pyrrolidine acetamide.