申请人:Parthasardhi Bandi Reddy
公开号:US20060041140A1
公开(公告)日:2006-02-23
A simple, industrial process for the preparation of the intermediates of acetyl cholinesterase inhibitors is provided. Thus, for example, 5,6-dimethoxy-2-(4-pyridyl)methyl-1-indanone is hydrogenated using platinum oxide catalyst in the presence of hydrochloric acid under a pressure of 2 bars to give 4-[(5,6-dimethoxy-1-indanon)-2-yl]methylpiperidine hydrochloride, which is then converted to donepezil hydrochloride, an acetyl cholinesterase inhibitor.
提供了一种简单的工业过程,用于制备乙酰胆碱酯酶抑制剂的中间体。例如,使用氯铂酸催化剂在2个大气压下,在盐酸存在下氢化5,6-二甲氧基-2-(4-吡啶基)甲基-1-茚酮,从而得到4-[(5,6-二甲氧基-1-茚酮)-2-基]甲基哌啶盐酸盐,然后将其转化为多奈哌齐盐酸盐,一种乙酰胆碱酯酶抑制剂。