9-dihydro-13-acetylbaccatin III, one of the chemicals obtained from Taxus
canadensis is used to produce, inter alia, 10-decetylbaccatin III, a
useful intermediate for the preparation of paclitaxel and analogues
thereof The 9-dihydro-13-acetylbaccatin III is converted into the
10-deacetylbaccatin III by a simple three step process involving (a)
replacement of the C-7 hydroxyl group of tho 9-dihydro compound with a
protecting group, (b) the oxidizing of the C-7 protected compound to
produce a C-9 ketone, and (c) the deprotecting of the C-9 ketone to
produce 10-deacetylbaccatin III.
III 9-9-dihydro-13-acetylbaccatin-13-acetylbaccatin, um dos produtos químicos obtidos do canadensis do taxus são usados produzir, o alia inter, 10-decetylbaccatin III, um intermediário útil para a preparação do paclitaxel e os analogues disso O III 9-9-dihydro-13-acetylbaccatin-13-acetylbaccatin são convertidos no 10-deacetylbaccatin III por uma recolocação de envolvimento process simples de três etapas (a) do grupo do hydroxyl C-7 do composto do tho 9-dihydro com um grupo protegendo, (b) a oxidação do composto protegido C-7 para produzir uma cetona C-9, e (c) deprotecting da cetona C-9 para produzir 10-deacetylbaccatin III.
