The extract of the aerial parts ofO. floribundus afforded in addition to known compounds 17 new diterpenes, including eightseco-ent-labdanes with a very rare carbon skeleton. The structures were elucidated by high field ...
The aerial parts of Haplopappus deserticola afforded three ent-labdane and one labdane derivative as well as a nor-ent-labdane. Furthermore, in addition to three known umbelliferone derivatives, a dimeric coumarin was ...
Seven new diterpenoids, a labdane, three isopimarenes and three rearranged isopimarenes, have been isolated from the flowering tops of Satureja gilliesii. Their structures are based on their spectroscopic properties and, ...