HYDROXYDICTYODIAL, A NEW ANTIFEEDANT DITERPENE FROM THE BROWN ALGADICTYOTA SPINULOSA
摘要:
Hydroxydictyodial, an antifeedant diterpene and a key intermediate in the biogenesis of several related diterpenes, has been isolated from the brown alga Dictyota spinulosa, and its structure was determined by spectroscopic analysis and chemical transformation.
The structures of fukurinolal and fukurinal, two newditerpenoids isolated from the brownseaweed Dilophus okamurai Dawson, have been established as 1 and 2, the latter possessing a novel bicyclic ring system, on the basis of spectral and chemical evidence.