%0 Journal Article
%T Structure of ent-15 -hydroxy-kaur-16-en-19-oic acid
%A Julia Bruno-Colmenarez
%A Graciela D¨ªaz De Delgado
%A Alexis Pe£¿a
%A Libia Alarcon
%J Avances en Qu¨ªmica
%D 2011
%I Universidad de los Andes
%X Ent-15¦Á-hydroxy-kaur-16-en-19-oic acid, C20H30O3, isolated from the leaves of Coespeletia moritziana, is reported in this work. This compound crystallizes in the monoclinic system, space group C2 and unit cell parameters a=19.7509 (5), b=10.5126 (3), c=8.8020 (3)  , ¦Â=93.722(2)¡ã and V= 1823.73(9)  3. The structure consists of three six-membered rings, labeled A, B, and C and a five-membered ring, called ring D. Additionally, this compound shows 7 chiral atoms whose configuration, obtained by anomalous dispersion, is represented by R-C4, S-C5, R-C8, S-C9, S-C10, R-C13 and R-C15.
%K natural products
%K ent-kaurene diterpenes
%K crystal structure
%U www.saber.ula.ve/bitstream/123456789/33824/1/articulo1.pdf