Journal
NATURAL PRODUCT RESEARCH
Volume 32, Issue 23, Pages 2865-2868Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14786419.2017.1385007
Keywords
Ocotea dispersa; Ocotea odorifera; Leishmania amazonensis
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We investigate the chemical composition and the in vitro antileishmanial and cytotoxic activities of the essential oils extracted from the leaves of Ocotea dispersa (Nees) Mez (OD-EO) and Ocotea odorifera (Vell) Rohwer (OO-EO). On the basis of GC-FID and GCMS, a-eudesmol (20.9%), valencene (10.2%), d-elemene (9.3%) and isospathulenol (7.3%) are the major constituents of OD-EO, whereas safrole (36.3%),.-cadinene (6.6%), camphor (6.5%) and a-copaene (6.0%) are the main constituents of OO-EO. Both ODEO and OO-EO display significant activity against the promastigote forms of Leishmania amazonensis, with IC50 values of 4.67 +/- 0.95 and 11.67 +/- 2.16 mu g/mL, respectively. The 50% cytotoxic concentration (CC50) of OD-EO and OO-EO to mouse peritoneal macrophages is 26.77 +/- 4.06 and 49.52 +/- 1.04 mu g/mL, respectively. This is the first report on the chemical composition of the essential oil extracted from the leaves of O. dispersa. Our results suggest that OD-EO and OO-EO are a promising source of new antileishmanial agents. [GRAPHICS] .
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