Beilstein J. Org. Chem.2015,11, 2707–2712, doi:10.3762/bjoc.11.291
friedelinol (5), were isolated from the aerial parts of Euphorbia geniculata. They were characterized as 1β-acetoxy-3β-hydroxy-11α,12α-oxidotaraxer-14-ene, 1β,3β-diacetoxy-21α-hydroxy-11α,12α-oxidotaraxer-14-ene and 3β,9α,20α-trihydroxy-Ψ-taraxast-5-ene, respectively, by spectral and chemical methods
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Keywords: Euphorbiaceae; Euphorbia geniculata; friedelin; friedelinol; genicunolide A; B; C; pentacyclic triterpenoids; Introduction
Euphorbia (Euphorbiaceae) is a very large and diverse genus of flowering plants comprising of about 2,000 members and is found all over the world, ranging from short annual
, designated as genicunolide A (1), B (2) and C (3), together with friedelin (4) [31] and friedelinol (5) [32], from the ethyl acetate extract of the aerial parts of the plant. Herein, we report the characterization of the three compounds by spectral and chemical methods.
Results and Discussion
The compounds 1
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Graphical Abstract
Figure 1:
Structures of compounds 1, 2, 3, 1a, 2a, 1b, 2b, 3a, 4 and 5.