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Last Updated: March 27, 2026

Claims for Patent: 4,089,969

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Summary for Patent: 4,089,969

Title:	5-Aroyl-1,2-dihydro-3H-pyrrolo[1,2-a]pyrrole-1-carboxylic acid derivatives and process for the production thereof
Abstract:	Novel 5-aroyl-1,2-dihydro-3H-pyrrolo[1,2-a]pyrrole-1-carboxylic acid compounds represented by the formula ##STR1## and the pharmaceutically acceptable, non-toxic esters and salts thereof, wherein R is hydrogen or a lower alkyl group containing from 1 to 4 carbon atoms and R1 is hydrogen, a lower alkyl group having from 1 to 4 carbon atoms, a lower alkoxy group of 1 to 4 carbon atoms, chloro, fluoro or bromo, the R1 substitution being at the ortho, meta or para positions of the aroyl group and process for the production of such compounds; 5-p-toluoyl-1,2-dihydro-3H-pyrrolo[1,2-a]pyrrole-1-carboxylic acid is representative of the class. These compounds, as the racemic mixture or the (1)-isomer, are useful as anti-inflammatory, analgesic and antipyretic agents and as smooth muscle relaxants.
Inventor(s):	Joseph M. Muchowski, Arthur F. Kluge
Assignee:	Syntex USA LLC
Application Number:	US05/771,286
Patent Claims:

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