Zusammenfassung
Aus der PflanzeHelenium autummnale (Familie compositae) wurde ein alkolischer Extrakt gewonnen, der cytotoxische und antileukämische Aktivität zeigte und die Helenalin (I) als wirksame Komponente enthielt. Die Behandlung von Mäusen, die Träger von P 388 lymphocytischer Leukämie waren, ergab eine beachtliche (T/C 220) Verlängerung ihrer Lebenserwartung. Die Substanz zeigte ausserdem einen wachstumshemmenden Einfluss auf das Walker 256 Karzinom. Helenalin ist das erste Sesquiterpen vom Pseudoguaianolid Typ, welches in vivo eine solche antineoplastische Aktivität zeigt.
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References
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For part 31, refer toG. R. Pettit, P. Traxler andC. P. Pase, Lloydia36, in press (1973).
This investigation was supported by Public Health Service Research Grants No. CA-10612-01 to No. CA-10612-04 from the National Cancer Institute and was performed pursuant to contract No. NCI-C-71-2308 with the Division of Cancer Treatment, National Cancer Institute, Department of Health, Education and Welfare. A grant from the C.S.I.R. (South Africa) to G.M.C. is also gratefully acknowledged. In addition, we are indebted to Dr.L. Johnston for identifying theHelenium autumnale, toBetty J. Abbot and her colleagues at the National Cancer Institute, for the biological studies, and toJ. F. Day for assisting with both the laboratory scale and preparative scale plant extraction procedures.
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Pettit, G.R., Cragg, G.M. Antineoplastic agents 32. The pseudoguaianolide helenalin. Experientia 29, 781 (1973). https://doi.org/10.1007/BF01946279
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DOI: https://doi.org/10.1007/BF01946279