Process for the preparation of...

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C - Chemistry, Metallurgy

07

D

C07D 491/22 (2006.01)

Patent

CA 2523059

The key intermediate in any synthesis of Irinotecan is 7-ethyl-10-hydroxy- 20(S) camptothecin. A process for the efficient synthesis of this intermediate is demonstrated proceeding through readily availabe 20(S)-camptothecin. Various other tecan compounds may be made by use of corresponding 7-alkyl-10- hydroxy-20(S)-camptothecin intermediates.

L'intermédiaire clé dans toute synthèse de l'irinotécan est la 7-éthyl-10-hydroxy-20(s) camptothécine. Un procédé de synthèse efficace de cet intermédiaire à partir de 20(S)-camptothécine facilement disponible est décrit. Divers autres composés técan peuvent être produits à l'aide d'intermédiaires 7-alkyl-10-hydroxy-20(S)-camptothécine correspondants.

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