Triterpenoids

Abstract

This review covers the isolation and structure determination of triterpenoids, including squalene derivatives, protostanes, lanostanes, holostanes, cycloartanes, dammaranes, euphanes, tirucallanes, tetranortriterpenoids, quassinoids, lupanes, oleananes, friedelanes, ursanes, hopanes, serratanes and saponins; 305 references are cited.

A Comprehensive Review of the Structure Elucidation and Biological Activity of Triterpenoids from Ganoderma spp.

“…Their structures are considered to be derived from the acyclic precursor squalene. More than 20,000 triterpenes have been isolated and identified from Nature, including squalene, lanostane, dammarane, lupine, oleanane, ursane, and hopane structure types [14,15]. The Ganoderma triterpenes belong to the lanostane triterpenes ( Figure 1).…”

The Chemistry and Pharmacology of Citrus Limonoids

“…Hence, a comprehensive medicinal chemistry tools and analysis methodology are employed herein to assess the various limonin biosynthetic products. Degraded limonoids (e.g., isobenzofuranones sharing structural features with limonoids [91]) and other tetranortriterpenoids extracted from different genera and/or not belonging to the limonin biosynthetic group will not be considered and hence readers are rather directed to relevant recent reviews [15,37,[92][93][94][95][96][97][98][99][100][101].…”

Roseic Acid and Roseolactones A and B, Furan‐Cucurbitane Triterpenes from Russula aurora and R. minutula (Basidiomycota)

“…Some reports of triterpenoids bearing an α,β-unsaturated γ-lactone ring in the side-chain can be found in the literature: [10] most of them actually derive from cyclization of a 23-hydroxy, Δ 24-25 (Z), 27-carboxylic acid precursor, which, in turn, may be derived from the reduction of a ketone group, [11] rather by hydration of a C=C double bond, as in our case. In particular, Hasegawa et al [12] could obtain both the 23R and the 23S isomers by synthetic transformation of a parent lanostane triterpene isolated from Abies firma seeds.…”