[EN] A PROCESS FOR THE PREPARATION OF ANHYDROUS OLANZOPINE HYDROCHLORIDE OF FORM-1<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION DE CHLORHYDRATE D'OLANZAPINE ANHYDRE DE FORME 1
申请人:LEE PHARMA PRIVATE LTD
公开号:WO2006025065A1
公开(公告)日:2006-03-09
Malononitrile is reacted with Propionaldehyde in presence of Sulphur Powder and Triethylamine in N,N-dimethlyformamide to give 5-Amino-4-Cyano-2-Methyl Thiophene. 2-fluoronitrobenzene is condensed with 5-Amino-4-Cyano-2-Methyl Thiophene in Isopropyl alcohol and Potassium Hydroxide powder give 4-cyano-2-methyl-1-(2-nitrophenyl amino) Thiophene. Reduction of 4-cyano-2-methyl-1-(2-nitrophenyl amino) Thiophene with Stannous Chloride and Hydrochloric acid in Isopropyl Alcohol and followed by cyclization to get 4-Amino-2-Methyl-10H-Thieno [2,3,-b][1,5] Benzodiazepine . Condensation of 4-amino-2-methyl-10H-Thieno [2,3,-b][1,5] Benzodiazepine and N-methyl Piperazine in presence of Dimethyl Sulfoxide and Toluene gives Olanzapine Technical grade. In anhydrous form. Recrystallization of the Technical grade anhydrous Olanzapine in Dichloromethane gives anhydrous Olanzapine hydrochloride of Form-I.
Process for preparation of hydrates of olanzapine and their conversion into crystalline forms of olanzapine
申请人:——
公开号:US20040067936A1
公开(公告)日:2004-04-08
The present invention relates to a method for the preparation of hydrates of 2-methyl-4-(4-methyl-1-piperazinyl)-10H-thieno [2,3-b] [1,5] benzodiazepine (hereinafter referred to as Olanzapine). The present invention also relates to a process for conversion of these hydrates into a pure crystalline form of olanzapine referred to as form-I. The present invention also relates to a method of converting Olanzapine Form-2 to Form-1.
The invention relates to a process for the preparation of 2-methyl-4-(4-methylpiperazin-1-yl)-10H-thieno-[2,3-b][1,5]benzodiazepine (olanzapine) of the formula (I) by reacting 4-amino-2-methyl-10H-thieno [2,3-b][1/5]benzodiazepine hydrochloride of the formula (II) with N-methylpiperazine in an organic solvent, which comprises carrying out the reaction in the mixture of toluene and 1,3-dimethyl-2-imidazolidinone. The invention also encompasses new 2-methyl-4-(4-methylpiperazin-1-yl)-10H-thieno [2,3-b][1,5]benzodiazepine dihydrochloride trihydrate of the formula (IB), the preparation thereof and pharmaceutical compositions comprising said new compound.
Process for the preparation of 2-methyl-4-(4-methylpiperazin-1-yl)-10h-thieno-[2,3-b] [1,5] benzodiazepine dihydrochloride trihydrate, 2-methyl-4-(4-methyl-piperazin-1-yl) -10h-thieno[2,3-b] [1,5] benzodiazepine dihydrochloride trihydrate, pharmaceutical compositions comprising it and its use
The invention encompasses new 2-methyl-4-(4-methylpiperazin-1--yl)-10H-thieno[2,3-b] [1,5]benzodiazepine dihydrochloride trihydrate of the formula (IB)
the preparation thereof and pharmaceutical compositions comprising said new compound.
[EN] PROCESS FOR PREPARATION OF HYDRATES OF OLANZAPINE AND THEIR CONVERSION INTO CRYSTALLINE FORMS OF OLANZAPINE<br/>[FR] PROCEDE DE PREPARATION D'HYDRATES D'OLANZAPINE ET DE CONVERSION DE CEUX-CI EN FORMES CRISTALLINES D'OLANZAPINE
申请人:REDDYS LAB LTD DR
公开号:WO2002018390A1
公开(公告)日:2002-03-07
The present invention relates to a method for the preparation of hydrates of 2-methyl-4-(4-methyl-1-piperazinyl)-10H-thieno [2,3-b] [1,5] benzodiazepine (hereinafter referred to as Olanzapine). The present invention also relates to a process for conversion of these hydrates into a pure crystalline form of olanzapine referred to as form-I. The present invention also relates to a method of converting Olanzapine Form-2 to Form-1.