Trapanins A and B, oligomeric hydrolyzable tannins from Trapa japonica Flerov
Autor: | Akira Okonogi, Tsutomu Hatano, Takuo Okuda, Kazufumi Yazaki |
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Rok vydání: | 1990 |
Předmět: | |
Zdroj: | Chemical and Pharmaceutical Bulletin. 38:2707-2711 |
ISSN: | 1347-5223 0009-2363 |
DOI: | 10.1248/cpb.38.2707 |
Popis: | Trapanin A (6), a trimeric hydrolyzable tannin, and trapanin B (7), a tetrameric hydrolyzable tannin, were isolated from the leaves of Trapa japonica (Trapaceae), and their structures were determined on the basis of spectroscopic and chemical data. The following tannins were also isolated from the leaves : cornusiin C (8) (trimer); cornusiin A (3), camptothin B (4) and cornusiin D (5) (dimer); gemin D (1), tellimagrandin I (2), pedunculagin, casuarictin and casuarinin (monomer). |
Databáze: | OpenAIRE |
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