1-Pyrrole- and 1-pyrrolidine-carboxylic acid derivatives and process for preparing the same

摘要

1-Pyrrole- and 1-pyrrolidine-carboxylic acid derivatives corresponding to the general formula: <IMAGE> in which R represents an alkyl radical having from 1 to 4 carbon atoms, preferably ethyl, and Am represents a group: <IMAGE> wherein R1 represents a 3-oxo-alkyl radical <IMAGE> or a 3-oxo-alkenyl radical <IMAGE> and R2 represents hydrogen or R1 and R2, when they are identical, each represent hydrogen, <IMAGE> R3 representing an alkyl radical having from 1 to 5 carbon atoms with the proviso that when R1 and R2 are simultaneously hydrogen, Am represents the group A. The novel derivatives are useful as intermediates for synthetizing azaprostaglandines.