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Cordiachromes from Auxemma oncocalyx |
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| Authors: | Otilia D L Pessoa Telma L G De Lemos M rio G De Carvalho and Raimundo Braz-Filho |
| Institution: | a Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, CP 12.200 60451-970 Fortaleza, Ceará, Brazil b Departamento de Química, Universidade Federal Rural do Rio de Janeiro, 23851-970 Seropédica, Rio de Janeiro, Brazil c Setor de Química de Produtos Naturais, Laboratório de Tecnologia de Alimento, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense, 28015-620 Campos, Rio de Janeiro, Brazil |
| Abstract: | Further cordiachromes, rel-10 ,11β-epoxy-11-ethoxy-8-hydroxy-2-methoxy-8aβ-methyl-5,6,7,8,8a,9,10aβ-octahydro-1,4-anthracendione, 6-formyl-2-methoxy-9-methyl-7,8-dihydro-1,4-phenanthrendione, rel-8,11;9,11-diepoxy-1,4-dihydroxy-2-methoxy-8aβ-methyl-5,6,7,8,8a,9,10,10aβ-octahydro-10-anthracenone, rel-9,11-epoxy-1,4,8-trihydroxy-2-methoxy-8aβ-methyl-5,6,7,8,8a,9,10,10aβ-octahydro-10-anthracenone, rel-2″-methoxy-7″-methyl-1″,4″-naphtalendione-(6″→5)-tetrahydropyran-(2-eq→O→2ax)-tetrahydropyran-(5′→6 )- 2-methoxy-7-methyl-1,4-naphthalendione, together with the known, allantoin, sitosterol and 3β-O-d-glucopyranosylsitosterol, have been isolated from Auxemma oncocalyx. Their structures were determined from spectral data, including 2D NMR experiments. |
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