Derivatives of octahydro-6, 10-dioxo-6H-pyridazino [1,2-a] [1,2] diazepine-1-carboxylic acid, their preparation process and their use in the preparation of therapeutically active compounds

摘要

A compound of the formula of SR configuration or a SR+SS wherein R is selected from the group consisting of hydrogen, alkyl of up to 18 carbon atoms and aryl and aralkyl of up to 18 carbon atoms and the -NH2 is free or protected useful as intermediates.