- Aporphine and bisaporphine alkaloids from Aristolochia lagesiana var. intermedia
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Corydines, isocorydines, and analogous aporphine alkaloids were isolated from the leaves of Aristolochia lagesiana var. intermedia, together with three bisaporphine salts (lagesianines B-D). Their structures were determined by chemical derivatizations and spectroscopic analyses. Lagesianines B and C are the first examples of N-CH2-N′ and C-2-O-C-1′ linked dimeric aporphine alkaloids, respectively, while the monomeric units of lagesianine D, which has a carbon skeleton, are linked through C-7-C-5′ via an ethane-1,2-diol group (C-7-CHOHCHOH-C-5′).
- Ferreira, Marcia L.R.,de Pascoli, Inara C.,Nascimento, Isabele R.,Zukerman-Schpector, Julio,Lopes, Lucia M.X.
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experimental part
p. 469 - 478
(2010/06/12)
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