Die Pharmazie 1986-Apr
Anti-inflammatory activity of extracts from Conyza canadensis.
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The petroleum ether and ethanolic extract from the epigean part of Conyza canadensis exhibits a significant anti-inflammatory effect on rats with a carrageenin and formalin oedema. Eight sesquiterpenic hydrocarbons with the highest anti-inflammatory activity were found in the petroleum ether fraction (beta-santalene, beta-himachalene, cuparene, alpha-curcumene, gamma-cadinene and three other unidentified hydrocarbons). Of these substances, beta-himachalene was further studied and its anti-inflammatory activity was demonstrated.