Topic
Triterpene
About: Triterpene is a research topic. Over the lifetime, 4180 publications have been published within this topic receiving 81137 citations. The topic is also known as: triterpenes.
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TL;DR: The oleanane skeleton was the most common skeleton and is present in most orders of the plant kingdom, and the relationship between the type of skeleton and the plant origin was investigated.
592 citations
TL;DR: Pentacyclic triterpenes are secondary plant metabolites widespread in fruit peel, leaves and stem bark display various pharmacological effects while being devoid of prominent toxicity and are promising leading compounds for the development of new multi-targeting bioactive agents.
Abstract: Pentacyclic triterpenes are secondary plant metabolites widespread in fruit peel, leaves and stem bark. In particular the lupane-, oleanane-, and ursane triterpenes display various pharmacological effects while being devoid of prominent toxicity. Therefore, these triterpenes are promising leading compounds for the development of new multi-targeting bioactive agents. Screening of 39 plant materials identified triterpene rich (> 0.1% dry matter) plant parts. Plant materials with high triterpene concentrations were then used to obtain dry extracts by accelerated solvent extraction resulting in a triterpene content of 50 - 90%. Depending on the plant material, betulin (birch bark), betulinic acid (plane bark), oleanolic acid (olive leaves, olive pomace, mistletoe sprouts, clove flowers), ursolic acid (apple pomace) or an equal mixture of the three triterpene acids (rosemary leaves) are the main components of these dry extracts. They are quantitatively characterised plant extracts supplying a high concentration of actives and therefore can be used for development of phytopharmaceutical formulations.
531 citations
TL;DR: Recent developments in the field of triterpene biosynthesis are reviewed, an overview of the genes and enzymes that have been identified to date are given, and strategies for discovering new triterpenes pathways are discussed.
Abstract: The triterpenes are one of the most numerous and diverse groups of plant natural products. They are complex molecules that are, for the most part, beyond the reach of chemical synthesis. Simple triterpenes are components of surface waxes and specialized membranes and may potentially act as signaling molecules, whereas complex glycosylated triterpenes (saponins) provide protection against pathogens and pests. Simple and conjugated triterpenes have a wide range of applications in the food, health, and industrial biotechnology sectors. Here, we review recent developments in the field of triterpene biosynthesis, give an overview of the genes and enzymes that have been identified to date, and discuss strategies for discovering new triterpene biosynthetic pathways.
506 citations
TL;DR: In this article, the biogenetic isoprene rule in its application to the triterpenes is discussed from a stereochemical standpoint, and a scheme has been developed leading from squalene to the formulae of the basic representatives of all known cyclic triterpene groups in their full structural and configurational detail.
Abstract: The biogenetic isoprene rule in its application to the triterpenes is discussed from a stereochemical standpoint. On the basis of a well defined system of arbitrary assumptions a scheme has been developed leading from squalene to the formulae of the basic representatives of all known cyclic triterpene groups - i.e. euphol, tirucallol, lupeol, taraxasterol, germanicol, β-amyrin, taraxerol, friedelin, α-amyrin, lanosterol - in their full structural and configurational detail. This result is considered to support the squalene hypothesis of the biogenesis of cyclic triterpenes.
502 citations
TL;DR: The triterpenoids are a large group of natural products derived from C(30) precursors and each of these structures is classified and mechanisms for their formation are provided.
500 citations