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flash" ont été réalisées sous pression d'air sur un gel de silice Merck Kieselgel Geduran SI60 (40-60) Les chromatographies sur colonne "classique" ont été réalisées sur un gel de silice Merck Kieselgel Geduran SI60, pp.70-230 ,
EI) ont été enregistrés sur un appareil Polaris Q Thermo Finnigan. Les masses exactes ont été réalisées par le service central d'analyses du CNRS à ,
Les analyses élémentaires ont été réalisées par le service de micro-analyse du LEDSS ou par le service central d ,