[EN] HYDROBROMIDE SALT OF BENZYL-PIPERIDYLMETHYL-INDANONE AND ITS POLYMORPHS<br/>[FR] SEL D'HYDROBROMIDE DE BENZYL-PIPERIDYLMETHYL-INDANONE ET SES POLYMORPHES
申请人:RANBAXY LAB LTD
公开号:WO2004099142A1
公开(公告)日:2004-11-18
A hydrobromide salt of donepezil, which is 1-[benzyl-4-(5,6 dimethoxy-1-indanon)-2-yl] methyl piperidine, is provided. Also crystalline polymorphic forms I and II of hydrobromide salt of donepezil are provided. Further, processes for preparing the polymorphic forms, pharmaceutical compositions comprising the salts, and methods of treatment comprising administration of the salts are provided.
Process for the preparation of 1-benzyl-4-(5,6-dimethoxy-1-indanon)-2-yl) methyl piperidine hydrochloride (Donepezil HCI)
申请人:——
公开号:US20040158070A1
公开(公告)日:2004-08-12
A process for the preparation of 1-benzyl-4-[(5,6-dimethoxy-1-indanon)-2-yl] methyl piperidine hydrochloride (Donepezil HCl) is disclosed. 5,6-Dimethoxy-2-(pyridin-4-yl) methylene inda-1-one is hydrogenated with a noble metal catalyst or a non-oxide derivative of a noble metal catalyst in a solvent at 20-100° C. and 10-90 psi gauge pressure. The resulting 4-[(5,6-dimethoxy-1-indanon)-2-yl] methyl piperidine is alkylated with an alkylating agent in an organic solvent at 20-80° C.
The present invention discloses a novel, stable polymorph of 1-benzyl-4-[(5,6-dimethoxy-1-indanone)-2-yl] methyl piperidine hydrochloride commonly known as Donepezil hydrochloride. Further the present invention discloses a process for producing Donepezil HCl amorphous and its polymorph Form (VI).
Novel pharmaceutical salt of (1-benzyl-4-[(5,6-dimethoxy-1-indanone)-2-yl] methyl piperidine (Donepezil)
申请人:Tarur Radhakrishnan Venkatasubramanian
公开号:US20050107613A1
公开(公告)日:2005-05-19
The present invention relates to the oxalate salt of 1-benzyl-4-[(5,6-dimethoxy-1-indanone)-2-yl]methyl piperidine, commonly known as Donepezil, and its method of preparation.