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Narcissus and Daffodil

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Alkaloids of <strong>Narcissus</strong> 197<br />

subunit <strong>and</strong> inhibiting peptide bond formation by preventing binding of the 3′<br />

terminal end of the donor substrate to the peptidyl transferase centre (Carrasco et al.,<br />

1975). Narciclasine also inhibits seed germination <strong>and</strong> seedling growth of some<br />

plants in a dose-dependent manner, interacting with hormones in some physiological<br />

responses. In this way, indole-3yl-acetic acid cannot overcome the inhibition<br />

of elongation of wheat coleoptile sections caused by narciclasine. Additionally,<br />

narciclasine suppresses the gibberellin-induced α-amylase production in barley<br />

seeds <strong>and</strong> cytokinin-induced expansion <strong>and</strong> greening of excised radish cotyledons<br />

(Bi et al., 1998). There are also interesting studies related to the chemical synthesis<br />

of this alkaloid (Angle <strong>and</strong> Wada, 1997; Rigby <strong>and</strong> Mateo, 1997).<br />

The anticancer <strong>and</strong> antiviral activities exhibited by pretazettine have also stimulated<br />

considerable interest in this compound (Furusawa <strong>and</strong> Furusawa, 1988; Furusawa<br />

et al., 1980; Gabrielsen et al., 1992; Suzuki et al., 1974) <strong>and</strong> in its chemical synthesis<br />

(Nishimata <strong>and</strong> Mori, 1998).<br />

REFERENCES<br />

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acaricidal <strong>and</strong> synergistic effects of Soosan, Pancratium maritimum extracts <strong>and</strong> constituents.<br />

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Abdalla, S., Abu Zarga, M. <strong>and</strong> Sabri, S. (1993) Alkaloids of Sternbergia clusiani <strong>and</strong> effects of<br />

lycorine on guinea-pig isolated pulmonary artery <strong>and</strong> heart. Fitoterapia, 64, 518–523.<br />

Abdallah, O.M. (1993) Narcisine, an alkaloid from <strong>Narcissus</strong> tazetta. Phytochemistry, 34, 1447–1448.<br />

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Allain, H., Bentué-Ferrer, D., Belliard, S. <strong>and</strong> Derouesné, C. (1997) Pharmacology of Alzheimer’s<br />

disease. In: G.P. Ellis, <strong>and</strong> D.K. Luscombe (eds.), Progress in Medicinal Chemistry,<br />

Vol. 34, Elsevier, Amsterdam, pp. 1–67.<br />

Aller, P. (1981) Effect of narciclasine <strong>and</strong> puromycin on the synthesis of rapidly labeled<br />

RNA in excised salivary gl<strong>and</strong>s of Chironomus thummi. Revista Española de Fisiología, 37,<br />

485–490.<br />

Almanza, G.R., Fernández, J.M., Wakori, E.W.T., Viladomat, F., Codina, C. <strong>and</strong> Bastida, J.<br />

(1996) Alkaloids from <strong>Narcissus</strong> cv. Salome. Phytochemistry, 43, 1375–1378.

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