A new route to semisynthetic Taxotère®, 1. is described using the mixed anhydride obtained from 2,4,6-trichlorobenzoyl chloride and [3-14C]-cinnamic acid 6, for the esterification of 7,10-O-diTroc-10-deacetylbaccatin III, 4. Hydroxyamination on the unsatured C-2′,3′,deprotection of the C-7,10-Troc groups of the ester 7 gave Taxotère® 1. [3′-14C]Taxotère® 9 (specific activity: 50 mCi/mmol) was obtained from [3-14C]-cinnamic acid 5 with a 5% yield.
半合成 Taxotère® 的新路线,1. 描述了使用从
2,4,6-三氯苯甲酰氯和 [3-14C]-
肉桂酸 6 获得的混合酸酐,用于酯化 7,10-O-diTroc-10 -脱乙酰浆果
赤霉素 III, 4。对不饱和 C-2',3' 进行羟基化,将酯 7 的 C-7,10-Troc 基团脱保护,得到 Taxotère® 1。 [3'-14C]Taxotère® 9(比活性) :50 mCi/mmol)由[3-14C]-
肉桂酸5获得,产率5%。