Atranorin

A study of Cladonia cervicornis (Achar.) Flotow from two widely disjunct populations in California, one from coastal Mendocino County and one from the foothills of the Sierra Nevada in Amador County, revealed a difference in the frequency of occurrence of the depside atranorin [245] (see Fig. 2.76) (Hammer and Ahti, 1990). The compound, considered to be a primitive feature of this lichen species, was present in 80% of the... [Pg.120]

Slansky, F., 1979. Effect of lichen chemicals atranorin and vulpinic acid upon feeding and growth of larvae of the yellow-striped armyworm, Spodoptera ornithogalli. Env. Entomol. 8, 865-868. [Pg.46]

Atranorin (phenolic) Parmelia tinctorum (lichen) Uncoupler (<5)... [Pg.567]

Atranorin. 3-Formyl-2,4 -dihydroxy-6-methylben -uric acid 3-hwtroxy-4-lmethoxyciirbonyl)-2,5-dimelhylphen-... [Pg.137]

C 9H 7CIOg, Mr 408.79, prisms, mp. 208-209 °C. C. is a depside that often occurs togeAer with atranorin, the biogenetic precursor of C., in lichens (e.g.. Ana-ptychia neoleucomelaena). [Pg.127]

CH2OH R = H, CHj. Most D. are didepsides, such as, e.g., atranorin, chloroatranorin, gyrophoric acid, and lecanoric acid. In some D. (e. g., alectorialic acid and barbatolic acid) the acid part (S) is linked with a benzylic hydroxy group of the A part. The structures of about 100 D. isolated from lichens have been elucidated by hydrolysis and alcoholysis to the corresponding carboxylic acids or esters (S part) and to the phenols (A part), respectively. [Pg.180]

This view was confirmed more directly when 5-methylorcylaldehyde (XXIV) but not orcylaldehyde was converted to substituted toluquinols and gliorosein (XXV) by Gliocladium roseum, implying that the C-methyltrans-ferase concerned could not accept the aromatic orcylaldehyde (Steward and Packter, 1968). In addition, whereas acetate (Yamazaki et al., 1%5) and or-sellinic acid (Yamazaki and Shibata, 1966) were both incorporated into the depside lecanoric acid (XXVI) (derived by esterification of two molecules of orsellinic acid) in the lichen Parmelia tinctorum, orsellinic acid was not converted to the related atranorin (XXVIl) (Yamazaki and Shibata, 1966) this... [Pg.555]

Dahlquist I, Fregert S (1980) Contact allergy to atranorin in lichens and perfumes. Contact Dermatitis 6 111-119... [Pg.390]

Dahlquist I, Fregert S (1981) Atranorin and oak moss contact allergy. Contact Dermatitis 7 168-169 De Groot AC (1987) Contact allergy to cosmetics causative ingredients. Contact Dermatitis 17 26-34 De Groot AC (1988) Adverse reactions to cosmetics. Thesis, State University of Groningen... [Pg.505]

Lorenzi S, Guerra L, Vezzani C, Vincenzi C (1995) Airborne contact dermatitis from atranorin. Contact Dermatitis 32 315-316... [Pg.507]

Swinyer LJ (1980) Connubial contact dermatitis to atranorin in lichens. Contact Dermatitis 6 226 Szczurko C, Dompmartin A, Michel M, Moreau A, Leroy D (1994) Photocontact allergy to oxybenzone ten years of experience. Photodermatol Photoimmunol Photomed 10 144-147 Temesvari E, Soos G, Podanyi, Kovacs I, Nemeth I (1978) Contact urticaria provoked by balsam of Peru. Contact Dermatitis 4 65—68... [Pg.507]

Lichen acids and fumaric acid are available from Chemotechnique, and usnic acid and Atranorin from Trolab and Chemotechnique these can be used to screen fo rlichen allergy. Oak-moss absolute, one of eight components of the perfume mix in the standard series, is also derived from a lichen... [Pg.742]

Light-absorbing chemicals in lichens or oak moss (from a lichen) are said to cause photoallergic dermatitis [137, 138], although this is not experimentally reproducible, at least not with atranorin and lichen mixtures [139]. Table 5 lists a number of putative causes of phytophotodermatitis, but omits those caused by ingestion and those reported but doubted from available evidence by Mitchell and others. The subject has been reviewed by Pathak [125] and others. There are also photosensitizing plants that do not contain psoralens, e.g., St. John s wort (Hypericum perforatum). [Pg.742]

Sandberg M, Thune P (1984) The sensitizing capacity of atranorin. Contact Dermatitis 11 168-173... [Pg.759]

Hausen et al. (1993) investigated the sensitising potential in guinea pigs of usnic acid, atranorin,... [Pg.941]

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