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The cytotoxic activity of five minor Amaryllidaceae alkaloids and one flavan isolated from Crinum augustum Rox and Crinum bulbispermum Milne were tested on human leukemic Molt 4 cells. Whereas the crinine-type alkaloids (6 alpha-hydroxycrinine, powelline) and the new type augustamine did not even inhibit the growth of Molt 4 cells, the lycorine-type alkaloid (pratorinine) and the crinine-type alkaloid (6 alpha-hydroxybuphanisine) showed a moderate cytotoxic activity and the flavan (4'-hydroxy-7-methoxyflavan) showed an important cytotoxic effect.
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Hafiz et al. (1991) studied this question.
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