The present invention concerns novel 7-deoxy taxane derivatives, their use as antitumor agents, and pharmaceutical formulations.
本发明涉及新型7-去氧紫杉烷衍生物,它们作为抗肿瘤剂的用途和制药配方。
Method for the preparation of baccatin III and derivatives thereof from 10-deacetylbaccatin III
申请人:PHARMACHEMIE B.V.
公开号:EP0875508A1
公开(公告)日:1998-11-04
10-Deacetylbaccatin III is selectively acylated to baccatin III and derivatives thereof in high yield with anhydrides (e.g. acetic anhydride), catalysed by Lewis acids. Extremely effective catalysts in this reaction are compounds of the formula MLx wherein M is a rare earth metal and L is a anion, preferably a strong electron withdrawing counterion such as triflate.
在路易斯酸的催化下,10-去乙酰基巴卡丁 III 与酸酐(如乙酸酐)可选择性地酰化成巴卡丁 III 及其衍生物,产率很高。在此反应中极为有效的催化剂是式 MLx 的化合物,其中 M 是稀土金属,L 是阴离子,最好是强取电子反离子,如三氯酸盐。