Research Article

Semisynthesis of Derivatives of Oleanolic Acid from Syzygium aromaticum and Their Antinociceptive and Anti-Inflammatory Properties

Figure 3

Effect of trifluoroacetyl derivatives of OA on pain latency to radiant heat and of OA (oleanolic acid), TOA (3-trifluoroacetyloleanolic acid), TOAm (28-methylester, 3-trifluoroacetyloleanane), and ibuprofen (standard drug) on latency to radiant heat. Values are presented as mean reaction time in seconds ± SEM for 6 animals; and . (a) shows a comparison of the tested compounds against control group, whereas (b) shows the comparison of the semisynthesized trifluoroacetyl compounds with OA.
(a)
(b)