Preliminary phytochemical and pharmacological studies of Aleurites moluccana leaves [L.] Willd

In the present work we have investigated the analgesic activity of various extracts prepared from Aleurites moluccana leaves by using the writhing test in mice. The results showed that the hydroalcoholic extract and the hexane fraction exhibit potent antinociceptive action. We have also isolated and identified some chemical constituents from the hexane fraction. In addition, the nature of substances present in ethyl acetate and butanol fractions were evaluated by TLC. Such fractions revealed the presence of phenolic compounds. Chromatographic procedures carried out with hexane fraction revealed the presence of n-hentriacontane, α-amyrin, β-amyrin, stigmasterol, β-sitosterol and campesterol, which were identified by spectroscopic data and HRGC or HRGC/MS techniques. The compounds considerably inhibited acetic acid-induced abdominal constrictions, being more efficacious than aspirin and paracetamol. In addition, preliminary HPLC analysis indicated, using a UV detector, one main constituent in alcoholic extract.