Synthesis 2003(17): 2655-2660  
DOI: 10.1055/s-2003-42425
PAPER
© Georg Thieme Verlag Stuttgart · New York

A Convenient Synthesis of Pyrrolo[3,4-c]quinolines

Andrea Virányia, Miklós Nyerges*a, Gábor Blaskób, László Tőkea
a Research Group of the Hungarian Academy of Sciences, Department of Organic Chemical Technology, Technical University of Budapest, 1521 Budapest P.O.B. 91, Hungary
b EGIS Pharmaceuticals Ltd., 1475 Budapest P.O.B. 100, Hungary
Fax: +36(1)4633648; e-Mail: mnyerges@mail.bme.hu;
Further Information

Publication History

Received 13 June 2003
Publication Date:
07 October 2003 (online)

Abstract

A new route to the pyrrolo[3,4-c]quinoline ring system has been developed. The synthesis proceeds stereoselectively in three steps, using 1,3-dipolar cycloaddition of azomethine ylides as a key step. First, a series of 4-arylpyrrolidine-3-carboxylic acids have been prepared from the appropriate cinnamic esters and a nonstabilized azomethine ylide. The reduction of a nitro group on the aromatic ring was followed by acid-catalyzed intramolecular lactam formation.