SEARCH Articles Figures Tables Alkaloids pyrrol Dimeric pyrrole-imidazole alkaloids Pyrrole and Imidazole-Derived Alkaloids Pyrrole, Imidazole, Pyrrolizidine, Pyridine, and Related Alkaloids Pyrrole-imidazole alkaloid antihistaminic activity Pyrrole-imidazole alkaloid taurodispacamide