Abstract
Aerial parts of
Fagonia bruguieri afforded a new erythroxan-type diterpene: 15,16-dihydroxy-7-β-hydroxy-
cis-ent-erythrox-3-ene (7-β-hydroxyfagonene). Aerial parts of
F. glutinosa yielded a series of additional new related erythroxans, most based upon a 15,16-dihydroxy-
cis-ent-erythrox-3-ene structure, trivially named fagonene. These isolations extend the recently discovered presence of diterpenes in the Zygophyllaceae and provide additional examples in the
ent-erythroxane diterpene series.