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Oxindole alkaloids from Uncaria macrophylla |
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| Authors: | JDavid Phillipson Sarah R Hemingway |
| Institution: | Pharmacognosy Research Laboratories, Department of Pharmacy, Chelsea College, University of London, Manresa Road, London SW3 6LX U.K. |
| Abstract: | Four isomeric oxindole alkaloids, isorhynchophylline, rhynchophylline, corynoxine and corynoxine B, have been isolated from the leaves of Uncaria macrophylla Wall. Corynoxine B has not previously been reported as a natural product. |
| Keywords: | Rubiaceae oxindole alkaloids corynoxine corynoxine B isorhynchophylline rhynchophylline |
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