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Terpenes are classified by the number of carbons: monoterpenes (C 10), sesquiterpenes (C 15), diterpenes (C 20), as examples. The terpene alpha-pinene is a major component of the common solvent, turpentine. The one terpene that has major applications is natural rubber (i.e., polyisoprene).
Monoterpenes are a class of terpenes that consist of two isoprene units and have the molecular formula C 10 H 16. Monoterpenes may be linear (acyclic) or contain rings (monocyclic and bicyclic). Modified terpenes, such as those containing oxygen functionality or missing a methyl group, are called monoterpenoids. Monoterpenes and monoterpenoids ...
While sometimes used interchangeably with "terpenes", terpenoids contain additional functional groups, usually containing oxygen. [1] When combined with the hydrocarbon terpenes, terpenoids comprise about 80,000 compounds. [2] They are the largest class of plant secondary metabolites, representing about 60% of known natural products. [3]
A terpene is a naturally occurring hydrocarbon based on combinations of the isoprene unit. Terpenoids are compounds related to terpenes, which may include some oxygen functionality or some rearrangement, however the two terms are often used interchangeably.
Although a wide range of terpene structures exist, few of them are biologically significant; by contrast, diterpenoids possess a rich pharmacology and include important compounds such as retinol, phytol or taxadiene.
Triterpenes are a class of terpenes composed of six isoprene units with the molecular formula C 30 H 48; they may also be thought of as consisting of three terpene units. Animals, plants and fungi all produce triterpenes, including squalene, the precursor to all steroids. [1] [2]
The vast heterogeneity of structures underlying this class of compounds makes generalizations difficult; they're a subclass of terpenoids, oxygenated derivatives of terpene hydrocarbons. Terpenes in turn are formally made up of five-carbon isoprene units (The alternate steroid base is a terpene missing a few carbon atoms). Derivatives are ...
Terpenophenolics are compounds that are part terpenes, part natural phenols. Plants in the genus Humulus and Cannabis produce terpenophenolic metabolites, such as humulone and tetrahydrocannabinol respectively. [1] Other examples of terpenophenolics from plants include bakuchiol and lapachol.