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Carvalho JC, Ferreira LP, da Silva Santos L, Corrêa MJ, de Oliveira Campos LM, Bastos JK, Sarti SJ. 
“Anti-inflammatory activity of flavone and some of its derivates from Virola michelli Heckel”. 
J Ethnopharmacol. 1999 Feb 26;64(2):173-7.
Abstract
The phytochemical study using Virola michelli Heckel (Myristicaceae) leaves allowed the isolation of a flavone named titonine (7,4'-dimethoxy-3'-hydroxyflavone). Titonine was further submitted to methylation and acetylation reactions yielding a 7,3',4'-trimethoxyflavone and a 7,3'-dimethoxy-4'-acetylflavone, respectively. These compounds were evaluated for both anti-inflammatory and analgesic activity. The anti-inflammatory activity was evaluated in rats using the paw edema test with carrageenin, while the analgesic activity was determined in mouse using the writhing test method. The different animal groups were treated with three compounds (10 mg/kg -i.p.) thirty min prior to stimuli application. The inhibition levels obtained for each compound were 22, 41 and 68%, respectively. Using the writhing test, oral doses of 5, 10 and 15 mg/kg of natural flavone reduced the acetic acid-induced contortions in a dose-dependent manner.
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