... imidazoles have anticonvulsant properties (9, 21, 22, 24-26, 38, 43, 44). ... R. erythropolis SBUG 251 produces only 1-acetylamino-4-phenylimidazol-2-yl-6-aminohexanoic acid ... We are grateful to P. Schumann (Deutsche Sammlung von Mikroorganismen und Zellkulturen) for help ...