PROCESS FOR THE PREPARATION OF NOVEL DERIVATIVES OF 5-H PYRIDO 3 ', 4': 4,5 PYRROLO 3,2-C PYRIDINE WITH ANTITUMOR ACTIVITY AND PHARMACEUTICAL COMPOSITIONS CONTAINING SAME

摘要

Derivatives of formula: IMAGE in which n denotes an integer from 2 to 4, R1 denotes hydrogen or a lower alkyl group, R2 and R3 denote hydrogen, a lower alkyl or hydroxyalkyl group and the tautomeric forms and addition salts with pharmaceutically acceptable inorganic or organic acids. Application in therapeutics.