Clerodane-type diterpenes from the seed pods of Hymenaea courbaril var. stilbocarpa
作者:Raquel T Nogueira、George J Shepherd、Antonio Laverde Jr、Anita J Marsaioli、Paulo M Imamura
DOI:10.1016/s0031-9422(01)00303-x
日期:2001.12
Three known and two new diterpenes were isolated from the ethyl acetate extract of Hymenaea courbaril var. stilbocarpa seed pods. One of the compounds was elucidated as (5R*,8S*,9S*,10R*)-cleroda-3,13E-dien-15-oic acid and the other was elucidated, after treatment with diazomethane, as methyl (5S*,8S*,9S*,10R*)-cleroda-3,13E-dien-15-oate. The known diterpenes were identified as (-)-ozic acid, (-)-isoozic acid and (-)-kovalenic acid which were characterized as their methyl ester derivatives. (C) 2001 Elsevier Science Ltd. All rights reserved.