Oleaceae iridoids from

The tables 1 - 7 contain the structures of the iridoids and secoiridoids from Oleaceae. The reference and the natural origin correspond to the first cite in which the compound has been named. In any case, secoiridoids such as oleuropein (81), ligustroside (82) and many others can be obtained from several species. 

The iridoids in Oleaceae must be formed after the route 1, with 10-hydroxygeraniol as the starting compound, via iridoidal and iridotrial up to the dcoxyloganic acid. From this point onwards, Jensen et al. [12] have put forward five routes to explain the origin of all the iridoids found in this family. 

Iridoids and secoiridoids show a wide variety of biological and pharmacological activities which have been reviewed by Ghisalbert [6] up to 1998. We report here a review of the most relevant compounds of this type isolated from Oleaceae. 

Yellowish (+)-jasmolactone A and other structural variants of this seco-iridoid are present in jasmine Jasminum multiflorum (Oleaceae). (-)-01europein is the bittertasting and antihypertonic p-glucoside extracted from olives, the bark and flie leaves of the olive tree Olea europaea, and also from ripe fruits of Ligustrum lu-cidum and L. japonicum (Oleaceae) it was the first seco-iridoid to be isolated. 

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