The invention relates to new compounds of formula (III):
wherein R is a C
1
-C
4
linear or branched alkyl group.
The invention also relates to new compounds of formula (IV)
wherein M is a metal.
The invention also relates to methods of making compounds of formulas (III) and (IV) and to methods of making donepezil and pharmaceutically acceptable salts thereof, such as donepezil hydrochloride, using the compounds.
本发明涉及公式(III)的新化合物:其中R是C1-C4线性或支链烷基。本发明还涉及公式(IV)的新化合物:其中M是
金属。本发明还涉及制备公式(III)和(IV)化合物的方法,以及使用这些化合物制备
多奈哌齐及其药学上可接受的盐,例如
盐酸多奈哌齐的方法。