Several known triterpenoids have been isolated from the roots of Lantana camara L. along with two new ones namely: 3ß,19α-dihydroxy-ursan-28-oic acid (7) and methyl 21,22ß-epoxy-3ß-hydroxy-olean-12-en-28-oate (8a). The hepatoprotective principle, oleanolic acid (1), from the roots has been converted into its 28-->13ß-lactone 10 by a facile photo-oxidation reaction. The leaves of L. camara have ...

The essential oil (EO) from different genotypes of Lippia gracilis Schauer (Verbenaceae) present two distinctive chemotypes containing either thymol or its isomer carvacrol as major compounds, both which have proven bioactivity against several agricultural pests. Recently, we shown that L. accession LGRA 106 and compound are toxic repellent the coconut mite, Aceria guerreronis Keifer (Acari: Er...