Xanthones from Tovomita pyrifolium |
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| Authors: | Antônio A. Lins Mesquita Wanderley Gonçlves De Oliveira Rosa M. Taveira Neiva Otto R. Gottlieb |
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| Affiliation: | Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte Brasil;Instituto de Química, Universidade de São Paulo, Brasil |
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| Abstract: | The wood of Tovomita pyrifolium (Guttiferae) contains the novel tovopyrifolins A [1,6-dihydroxy-7-methoxy-5-prenyl-6′,6′-dimethylpyrano (2′,3′:3,2)xanthone], B (1,5-dihydroxy-3,4-dimethoxyxanthone) and C (1,3,5-trihydroxy-2-methoxyxanthone) and also the known tovophyllins A and B [structure revised to 1,6-dihydroxy-5-prenyl-6′, 6′-dimethylpyrano(2′,3′:3,2)-6″,6″-dimethylpyrano(2″,3″:7,8)xanthone]. |
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| Keywords: | Guttiferae 1,3,6- trihydroxy-2,5-diprenyl-6′,6′-dimethylpyrano(2′,3′: 7,8)xanthone 1,6-dihydroxy-5-prenyl-6′,6′-dimethylpyrano(2′,3′: 3,2)-6″,6″-dimethylpyrano(2″,3″: 7,8)xanthone 1,6-dihydroxy-7-methoxy-5-prenyl-6′, 6′-dimethylpyrano(2′,3′:3,2)xanthone 1,5-dihydroxy-3,4-dimethoxyxanthone 1,3.5-trihydroxy-2-methoxyxanthone. |
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