"' Cnicin "'is a sesquiterpene lactone, esterified with a substituted acrylic acid, and belonging to the germacranolide class of natural products.
42.
The flowers of " Calendula officinalis " contain flavonol glycosides, triterpene oligoglycosides, oleanane-type triterpene glycosides, saponins, and a sesquiterpene glucoside.
43.
"' Delta-cadinene synthase "', a sesquiterpene cyclase, is an enzyme expressed in plants that catalyzes a cyclization reaction in terpenoid biosynthesis.
44.
"' Nerolidol "', also known as peruviol, is a naturally occurring sesquiterpene found in the essential oils of many types of plants and flowers.
45.
For example, in Thompson & Heathcock's synthesis of the sesquiterpene isovelleral, the final step uses the Swern protocol, avoiding rearrangement of the acid-sensitive cyclopropanemethanol moiety.
46.
"' Isocomene "'is a naturally occurring sesquiterpene first isolated from the rayless golden rod " Isocoma wrightii ", from which it derives its name.
47.
Further repetition of the process would give rise to farnesyl pyrophosphate ( FPP ) which, more specifically, is the precursor for linear and cyclic sesquiterpenes and more importantly the sesquiterpene lactones.
48.
Despite the fact that the biochemical synthesis has not been specifically investigated, it is clear that leptospermone is not an oxidized terpene ( or specifically a sesquiterpene, " ei ."
49.
The sweet taste is caused by a sesquiterpene compound called hernandulcin, which was discovered in 1985 and named for Francisco Hern�ndez, the Spanish physician who first described the plant in the sixteenth century.
50.
"' Zingiberene "'is a monocyclic sesquiterpene that is the predominant constituent of the oil of ginger ( " Zingiber officinale " ), from which it gets its name.
