L. Spectres-de-masse, MS) ont été enregistrés sur un appareil VGplatform (Micromass- Waters) ESI/quadripole pour la basse résolution, utilisant la technique d'ionisation par electrospray, en mode positif ou négatif. Les spectres haute résolution ont été enregistrés sur un appareil micrOTOFq (Bruker) ESI/QqTOF

M. Axxial and . Prep, 8 bars, diamètre de la colonne 20 mm) Certaines séparations ont été réalisées par chromatographie flash pilotée par le logiciel Gilson 712 HPLC

. Le, THF a été distillé sur sodium en présence de benzophénone

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. Après-arrêt-de, excès de thiol est neutralisé par ajout d'une solution de NaOCl (13%, 10 mL) Le milieu réactionnel est ensuite évaporé à sec. Le résidu obtenu est dissous dans l'AcOEt (100 mL), lavé successivement par une solution aqueuse de NaHCO 3 5% (2 x 15 mL), une solution aqueuse d'acide citrique 5% (1 x 15 mL) et une solution aqueuse saturée de NaCl (1 x 25 mL, puis la phase aqueuse est extraite au dichlorométhane (2 x 20 mL). Les phases organiques sont rassemblées puis séchées sur MgSO 4 , filtrées et évaporées sous vide

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