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    • Cassels Niven, Bruce; Eckardt, G.; Kaussmann, E. U.; Tschesche, R. (Pergamon Press, 1974-02-20)
      The known alkaloids zizyphine-A (1) and -B (2), abyssinine-A (4) and -B (5), and the previously undescribed zizyphine-C (3), -D (6) and -E (7) have been isolated from the stem bark of Zizyphus oenoplia. The structures ...