Syntezy wybranych leków pochodnych 2-amino-1H-benzimidazolu

2-Amino-1H-benzimidazole fragment occurs in broad spectrum of drugs with anticancer, antiviral, antifungal, anthelmintic and antihistamine properties. There are 30 drugs, 2-amino-1H-benzimidazole derivatives, registered in the world. Mebendazole, Albendazole and another derivatives are antihelmintic drugs which are believed to work by selectively inhibiting the synthesis of microtubules in parasitic worms, and by destroying extant cytoplasmic microtubes in their intestinal [9, 12, 14]. Astemizole was a second-generation antihistamine drug that has a long duration of action. It has been withdrawn from the market in most countries because of rare but potentially fatal side effects [19]. Mizolastine is non-sedating antihistamine drug [21]. It blocks H1 receptors and doesn’t prevent the actual release of histamine from mast cells, but just prevents it binding to receptors. Enviroksim and its isomer Zinviroksim and Enviraden are antivirial drugs [26, 27]. They inhibit multiplication of 15 different serotypes of rhinovirus. Benomyl is a systemic fungicide that is selectively toxic to microorganisms [29]. Benomyl binds to microtubules, interfering with cell functions, such as meiosis and intracellular transportation. Carbendazim is a widely used, broad-spectrum fungicide and a metabolite of Benomyl [29]. It’s also shown an anticancer activity. Oncodazole shows antifungal, antineoplastic and antihelmintic activities, which exerts its effect in cells by binding to tubulin and interfering with the polymerization of microtubules [33].