Research Article
Semisynthesis of Derivatives of Oleanolic Acid from Syzygium aromaticum and Their Antinociceptive and Anti-Inflammatory Properties
Figure 5
Formalin-induced pain behavior. OA (oleanolic acid), TOA (3-trifluoroacetyloleanolic acid), and TOAm (28-methylester, 3-trifluoroacetyloleanane). Results are presented as mean number of licks/bites ± SEM for 6 animals; and . (a) shows a comparison of the tested compounds with control group, whereas (b) displays a comparison of the trifluoroacetyl derivatives with OA.
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