Chemistry:Fragilin
From HandWiki
Fragilin is a chemical compound of the anthraquinone class. It has the molecular formula C
16H
11ClO
5 and is a chlorinated derivative of parietin. In 1965, it was reported as a constituent of the lichens Sphaerophorus fragilis and Sphaerophorus coralloides.[1] It has since been found in a variety of other lichens including Nephroma laevigatum,[2] Caloplaca,[3] Xanthoria parietina,[4] and others.
References
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedBruun - ↑ Bendz, Gerd; Bohman, Gerd; Santesson, Johan; Cyvin, S. J.; Hagen, G. (1967). "Chemical Studies on Lichens. 9. Chlorinated Anthraquinones from Nephroma laevigatum". Acta Chemica Scandinavica 21: 2889–2890. doi:10.3891/acta.chem.scand.21-2889.
- ↑ Bohman, Gerd (1969). "Anthraquinones from the genus Caloplaca". Phytochemistry 8 (9): 1829–1830. doi:10.1016/s0031-9422(00)85978-6. Bibcode: 1969PChem...8.1829B.
- ↑ Sargent, M. V.; Smith, David O'N.; Elix, J. A. (1970). "The minor anthraquinones of Xanthoria parietina(L.) Beltram, the chlorination of parietin, and the synthesis of fragilin and 7-chloroemodin ('AO-1')". J. Chem. Soc. C (2): 307–311. doi:10.1039/J39700000307.
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