title: Synthesis and immunotropic activity of some 2-aminobenzimidazoles, Part 4.
abstract: 2-Aminobenzimidazole reacted with selected esters of alpha, beta-unsaturated acids and alpha, beta-unsaturated ketones to form derivatives of 1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazol-2-ones, 1,4-dihydropyrimido[1,2-a]benzimidazoles, and 2-acetylaminobenzimidazole. 2-Cinnamoylaminobenzimidazole, 4-phenyl-1,2,3,4-tetrahydropyrimido[1,2,-a]benzimidazol-2-on e, 4-(benzimidazol-2-ylamino)-4-phenylbutan-2-one, and 4-methyl-2-phenyl-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole were tested for their potential activity in immunological assays in the mouse model. Compound 1, at a dose of 100 micrograms/mouse, significantly inhibited the humoral immune response and, at the same time, stimulated the cellular type of that response. The proliferative response of mouse splenocytes to concanavalin A was inhibited only at a higher dose (2 micrograms/ml). The immunotropic activity of 4, on the other hand, was uniformly strongly inhibitory in all applied tests. The suppressive activity of 4 was lower in the cellular immune response and proliferation tests than that of cyclosporin A.
authors.affiliation: Department of Technology of Drugs, Wrocław, University of Medicine, Poland.
authors.forename: W
authors.initials: W
authors.lastname: Nawrocka
authors.forename: M
authors.initials: M
authors.lastname: Zimecki
mesh_terms: D000818:Animals; D019306:Artemisia / Q000737:chemistry; D001562:Benzimidazoles / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D002455:Cell Division / Q000187:drug effects; D003208:Concanavalin A; D005260:Female; D006968:Hypersensitivity, Delayed / Q000188:drug therapy; D007111:Immunity, Cellular / Q000187:drug effects; D007166:Immunosuppressive Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D008297:Male; D051379:Mice; D008808:Mice, Inbred CBA; D037121:Plant Lectins; D010946:Plants, Medicinal; D013154:Spleen / Q000166:cytology / Q000187:drug effects; D013329:Structure-Activity Relationship
chemical_list: D001562:Benzimidazoles; D007166:Immunosuppressive Agents; D037121:Plant Lectins; D003208:Concanavalin A; C027391:2-aminobenzimidazole