2-Substituted benzimidazole compounds of the formula: ##STR1## wherein R.sub.1 is hydrogen, halogen, lower alkyl or lower alkoxy, and R.sub.2 is hydrogen or lower alkyl with the proviso that R.sub.1 and R.sub.2 do not stand for hydrogen simultaneously and, when R.sub.1 is hydrogen, R.sub.2 cannot mean a methyl group at the 6th position on the pyridin-2-yl group or methyl an isobutyl group on the phenyl group; are useful as anti-inflammatory agents and/or analgesics.
2-Substituted azole derivatives. 1. Synthesis and antiinflammatory activity of some 2-(substituted-pyridinyl)benzimidazoles
作者:Goro Tsukamoto、Koichiro Yoshino、Toshihiko Kohno、Hiroshi Ohtaka、Hajime Kagaya、Keizo Ito
DOI:10.1021/jm00181a007
日期:1980.7
A series of 2-(2-pyridinyl)benzimidazoles was synthesized and evaluated for antiinflammatory activity by the carrageenan-induced rat paw edema assay. Among several active derivatives, 2-(5-ethylpyridin-2-yl)benzimidazole (6) was selected for further study. A comparison of compound 6 with phenylbutazone and tiaramide revealed that 6 possesses stronger activity in acute inflammatory models possibly with