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Allergenic Component of a Liverwort: A Sesquiterpene Lactone
Frullania spp. (Hepaticae, Jungermanniales) are agents of allergies. Extraction and fractionation of Frullania tamarisci has given, as the only allergenic component isolated, a levorotatoryExpand
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Conocarpin, a leucodrin-type metabolite of Leucospermum conocarpodendron(L.) buek
Conocarpin, C15H16O8, obtained from leaves of Leucospermum conocarpodendron(L.) Buek., is shown to be a diastereoisomer of leucodrin. Its greater chemical lability is demonstrated.
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Metabolites of Proteaceae. VII. Lacticolorin, a phenolic glucoside ester, and other metabolites of Protea lacticolor Salisb.
Lacticolorin, from the leaves of Protea lacticolor Salisb., is shown to be 2-hydroxy-4-hydroxymethylphenyl 6-O-benzoyl-β-D-glucopyranoside. It is accompanied in the plant by benzoic,Expand
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β-Aryl-α-oxoglutaric acids
The oxidation of 2-arylpropane-1,1,3-tricarboxylic acids with selenium dioxide yields β-aryl-α-oxoglutaric acids (aryl = phenyl and p-methoxyphenyl), whose dimethyl esters display a high degree ofExpand
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Beta-aryl-alpha-oxoglutaric acids.