Hymenaea species

From the plant Agathis robusta a group of labdane isomers at C-13 have been isolated and related to 13-e/n-manool after interconvertion using lithium in diaminoethane [110]. The Hymenaea species, i.e H. ablongifolia and H. parvifolia, have been studied and enantiopinifolic acid as well as guamaic acid have been isolated, while enantio-13-ep/-labdanolic acid has been isolated from Trachylobium verrucosum [111]. 

Another group of species demonstrated a disjunct distribution pattern involving areas of caatinga forest in central-southern Bahia as well as areas ranging from northern Parafba, southern Ceara and north-eastern Piaul. Habitat has been poorly recorded on material coming from these last two states, but some of these species seem to occur in the piedmont of residual landforms. Some examples of this type of distribution are seen with Hymenaea martiana, Calliandra spinosa Ducke and Chloroleucon foliolosum. 

Hymenaea courbaril and balsam or copal resin other species of jutai or containing diterpene acids jatobd, collection around of eperuic group base or by tapping similar to the above 31... 

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