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Grayanic acid

Fig. 39. A Grayanic acid (from Cladonia grayi Merr. ex Sandst), GE. Bar 100 im. B Hypoprotocetraric acid, GE. Bar 100 pm. C Hypoprotocetraric acid, Py. Bar 100 pm. D Hypoprotocetraric acid, Q. Bar 10 pm... Fig. 39. A Grayanic acid (from Cladonia grayi Merr. ex Sandst), GE. Bar 100 im. B Hypoprotocetraric acid, GE. Bar 100 pm. C Hypoprotocetraric acid, Py. Bar 100 pm. D Hypoprotocetraric acid, Q. Bar 10 pm...
Umbilicaric acid 3-Hydroxyumbilicaric acid Nostoclide I Grayanic acid a-Carotene Barbatic acid Ergochrome AB... [Pg.117]

Deriv Acetylgrayanic acid, mp 57-59 °C (ben-zene-n-hexane), from grayanic acid with AcjO-H2SO4... [Pg.329]

Grayanic acid. Aust J Chem 29 899-906 Djura P, Sargent MV (1976b) Depsidone synthesis. VI. [Pg.453]

The best known depsidones are physodic acid, lobaric acid, norlobaridone, grayanic acid, alectoronic acid, diploicin, 4-0-methylphysodic acid, a-collatolic acid, lividic acid and variolaric acid. [Pg.10]

The structure of grayanic acid (351) has been confirmed by synthesis 101). It co-occurs with the ring-opened diphenyl ether congrayanic acid (352) in the lichen Gymnoderma melacarpum 47). Interestingly the dibenzo-furan melacarpic acid (353), a product of carbon-carbon oxidative coupling, also occurs in this lichen. [Pg.178]

Cladonia grayi 4-0-Demethylsphaerophorin, grayanic acid, 4-0-demethylgrayanic add (90)... [Pg.215]

See other pages where Grayanic acid is mentioned: [Pg.18]    [Pg.39]    [Pg.49]    [Pg.329]    [Pg.223]    [Pg.531]    [Pg.218]    [Pg.18]    [Pg.39]    [Pg.49]    [Pg.329]    [Pg.223]    [Pg.531]    [Pg.218]   
See also in sourсe #XX -- [ Pg.329 ]

See also in sourсe #XX -- [ Pg.178 ]

See also in sourсe #XX -- [ Pg.215 , Pg.218 ]



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