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Carotanes

Tetraterpenoids and polyterpenoids are minor components of higher plants and are generally overwhelmed by the input of those compounds from microbial biomass in marine and lacustrine environments or sedimentary rocks. The natural cyclic tetraterpenoids have a maximum of two alicyclic rings, and thus the saturated and aromatic derivatives are limited. The common parent skeltons are lycopane, carotane, l-(2 , 2 ,6 -trimethylcyclohexyl)-3,7,12,16,20,24-hexamethylpentacosane, and biphytane. ... [Pg.83]

A new carotane sesquiterpenoid, linkiol, has been isolated from the plant Ferula linkii and assigned structure (96) on the basis of its chemical and spectroscopic properties. "... [Pg.78]

Carotanes -m peroxide preparation [PEROXIDES AND PEROXIDE COMPOUNDS - ORGANIC PEROXIDES] (Vol 18) -m petroleum [PETROLEUM - COMPOSITION] (Vol 18)... [Pg.170]

According to the identified tetraterpane, the Aleksinac shale is more like the Eocene Green River shale, which also contained perhydro-8-carotane (5,13), than like the Miocene Messel shale in which acyclic lycopane has been identified (10). These differences probably originate from different participation of various carotenoids in the biolipids whose remains were precipitated with the sediments. [Pg.47]

It has been claimed that (186) is a new carotane derivative isolated from the Compositae species Inula crithmoides,103 There is little doubt, however, that this compound is in fact vaginatin, first reported in 1968.104... [Pg.102]

Ghisalbeiti EL (1994) The Daucane (carotane) class of sesquiterpenes. Phytochemistry 37(3) 597-623... [Pg.3097]

On the other hand, the tricyclic hydroxy ether (220) having the carotane skeleton is described as having a sweetish odor reminiscent of calamus oil with an amber-like note 322 no corresponding odor description having been given for the parent compound (219) which was also found in carrot oil (52). [Pg.481]

Confirmation of Biolipid to Geolipid Transformations. The examples of botryococcane and p-carotane serve to illustrate the value of preserved structures as... [Pg.16]

See other pages where Carotanes is mentioned: [Pg.170]    [Pg.497]    [Pg.137]    [Pg.76]    [Pg.517]    [Pg.517]    [Pg.61]    [Pg.374]    [Pg.25]    [Pg.3946]    [Pg.62]    [Pg.360]    [Pg.81]    [Pg.100]    [Pg.182]    [Pg.183]    [Pg.205]    [Pg.205]    [Pg.62]    [Pg.103]    [Pg.364]    [Pg.752]    [Pg.1092]    [Pg.26]    [Pg.246]    [Pg.898]    [Pg.908]    [Pg.16]    [Pg.73]    [Pg.96]    [Pg.96]    [Pg.101]   
See also in sourсe #XX -- [ Pg.96 ]



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