The isoprenoids include diterpenoids
(namely sugiol, nimbiol, margasone) and triterpenoids containing protomeliacins, liminoids, azadirone and its derivatives, genudin and its derivatives, vilarin type of compounds and C-secomeliacins such as nimbin, salannin and azadirachtin.
Insect growth regulatory effects of linear diterpenoids
and derivatives from Baccharis thymifolia.
In our investigations the root barks yielded the two ent-kaurane diterpenoids
kaur-16-en-19-oic acid (1) (Structure depicted in Fig.
from Sagittaria pygmaea.
Materials is arranged in chapters on alkaloids and nitrogen compounds, coumarins; flavonoids; monoterpenoids, diterpenoids
and sesquiterpenoids; phenolics, lignans, neolignans and tannins; quinones; quassinoids; triterpenes; xanthones; and miscellaneous.
New cis-clerodane diterpenoids
from Croton schiedeanus.
The subclass Octocorallia is a rich source of diterpenoids
, whose biological activity includes deterrence of predators (Coll et al., 1982; Van Alstyne et al., 1994; Barsby and Kubanek, 2005).
Further studies on the nonmacrocyclic-trichothecene--producing isolates led to the isolation of the novel diterpenoids
called atranones (Andersen et al.
It's been standardized to contain certain active compounds: lignans, diterpenoids
and plant steroids.
According to , diterpenoids
increase hydrophilicity of kaurene extract; however, the methyl group has drastically reduced their antimicrobial activity.
 isolated five diterpenoids
alkaloids (pseudaconitine, 14-veratroylpseudaconine, 14-O-acetylneoline, neoline, and senbusine A) of Aconitum laciniatum, a species of aconites of polyherbal formulations in Bhutanese Traditional Medicine, for inflammatory conditions.
officinalis has been reported to produce many biologically active compounds, mainly phenolic diterpenoids
(Masahiro et al.