Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

C20-diterpenes

Cl 0 monoterpenes Cl 5 sesquiterpenes C20 diterpenes C30 triterpenes C27 steroids C40 tetraterpenes C(n) polyterpenes Saponins Cucurbitacins Terpenoid alkaloids... [Pg.7]

The structures of terpenes or terpenoids varies widely and are classified according to various aspects, e.g. number of isoprene units (Cio monoterpenes, C15 sesquiterpenes, C20 diterpenes, C25 sesterterpenes, C30 triterpenes, C40 tetraterpenes) or division in acyclic, mono-, hi-, tri-, tetra-, pentacyclic terpenes. Often terpenes are named by their trivial names, e.g. d-limonene. [Pg.97]

The multiples of isoprene units in a terpene serve to classify it Cio, monoterpenes C15, sesquiterpenes C20, diterpenes C30, tri-terpenes to which the steroids are closely related C25, sesterpenes. It is a curious thing to note that the isoprene rule, sound and powerfully useful not least for structure elucidation, has unnatural foundations. Isoprene (4.1) is not a naturally occurring compound. Instead the clay from which the terpenes are so orderly fashioned is isopentenyl pyrophosphate (4.14) and dimethylallyl pyrophosphate (4.15). The latter is seen in many natural compounds, e.g. (4.11) as a prenyl ... [Pg.51]

See other pages where C20-diterpenes is mentioned: [Pg.411]    [Pg.1234]    [Pg.378]    [Pg.313]    [Pg.236]    [Pg.321]    [Pg.289]    [Pg.353]    [Pg.64]    [Pg.425]    [Pg.428]    [Pg.4]    [Pg.377]    [Pg.136]    [Pg.137]    [Pg.145]    [Pg.147]    [Pg.151]    [Pg.153]    [Pg.157]    [Pg.159]    [Pg.165]    [Pg.171]    [Pg.175]    [Pg.177]    [Pg.183]    [Pg.189]    [Pg.199]    [Pg.203]    [Pg.205]    [Pg.321]    [Pg.300]    [Pg.235]    [Pg.389]    [Pg.341]    [Pg.311]    [Pg.314]    [Pg.339]    [Pg.341]    [Pg.411]    [Pg.414]    [Pg.382]    [Pg.44]   
See also in sourсe #XX -- [ Pg.163 ]



SEARCH



Diterpenes

© 2024 chempedia.info