Method for preparing 13.alpha.-cinnamoyl baccatine iii or...

Details Method for preparing 13.alpha.-cinnamoyl baccatine iii or... Method for preparing 13.alpha.-cinnamoyl baccatine iii or...

C - Chemistry, Metallurgy

07

D

C07D 305/14 (2006.01)

Patent

CA 2113444

A method for preparing 13 alpha -cinnamoyl baccatine III or 10-deacetyl baccatine III of formula (I) by condensation of a mixed anhydride having general formula (II) on a derivative of baccatine III or 10-deacetyl baccatine III of general formula (III). In formulae (I) and (III), R1 is an acetyl or trichloro-2,2,2-ethoxycarbonyl radical. In formula (II), R stands for 1-5 substituents which are the same or different (halogen, nitro, methyl, methoxy).

2113444 9302066 Procédé de préparation de la cinnamoyl-13.alpha. baccatine III ou désacétyl-10 baccatine III de formule (I) par condensation d'un anhydride mixte de formule générale (II) sur un dérivé de la baccatine III ou de la désacétyl-10 baccatine III de formule générale (III). Dans les formules (I) et (III), R1 représente un radical acétyle ou trichloro-2,2,2 éthoxycarbonyle. Dans la formule (II), R représente 1 à 5 substituants, identiques ou différents (halogène, nitro, méthyle, méthoxy).

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