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 ...
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 ...
San Martín Barrientos, Aurelio; Quezada, Elías; Soto, Pilar; Palacios, Yolanda; Rovirosa, Juana(Natl Research Council of Canada, 1996)
The marine gastropod mollusk *Trimusculus peruvianus collected on the coast of Central Chile yielded four new labdane metabolites. The structural elucidation of all compounds was accomplished by spectral analysis. One ...