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By definition triterpenoids are triterpenes that possess heteroatoms, usually oxygen. The terms triterpene and triterpenoid often are used interchangeably. Triterpenoids possess a rich chemistry and pharmacology (e.g. cholesterol ) with several pentacyclic motifs.
Terpenoids are modified terpenes, [7] wherein methyl groups have been moved or removed, or oxygen atoms added. Some authors use the term "terpene" more broadly, to include the terpenoids.
Triterpenoids (2 P) Pages in category "Triterpenes" The following 94 pages are in this category, out of 94 total. This list may not reflect recent changes. *
Steroid glycosides are saponins with 27-C atoms. [4] They are modified triterpenoids where their aglycone is a steroid, these compounds typically consist of a steroid aglycone attached to one or more sugar molecules, which can have various biological activities.
The term terpene was coined in 1866 by the German chemist August Kekulé to denote all hydrocarbons having the empirical formula C 10 H 16, of which camphene was one. Previously, many hydrocarbons having the empirical formula C 10 H 16 had been called "camphene", but many other hydrocarbons of the same composition had different names.
Hopanoids are a diverse subclass of triterpenoids with the same hydrocarbon skeleton as the compound hopane. This group of pentacyclic molecules therefore refers to simple hopenes, hopanols and hopanes, but also to extensively functionalized derivatives such as bacteriohopanepolyols (BHPs) and hopanoids covalently attached to lipid A. [1] [2]
Oleanane is a natural triterpenoid.It is commonly found in woody angiosperms and as a result is often used as an indicator of these plants in the fossil record. It is a member of the oleanoid series, which consists of pentacyclic triterpenoids (such as beta-amyrin and taraxerol [verification needed]) where all rings are six-membered.
Hopane is a natural chemical compound classified as a triterpene.It forms the central core of a variety of other chemical compounds which are collectively known as hopanoids.