摘要:
The present invention relates to a process for the preparation of {2-[4-(α-phenyl-p-chlorobenzyl)-piperazin-1-yl]-ethoxy}-acetic acid-N,N-dimethylamide of the Formula (I) and enantiomers thereof. The compound of the Formula (I) or enantiomers thereof are important pharmaceutical intermediates suitable for direct transformation into non-sedating antihistamine type pharmaceutical active ingredients cetirizine and levocetirizine.
摘要:
According to the present invention, 2-chloroethoxy-acetic acid-N,N-dimethylamide of the Formula (I) is prepared by reacting 2-hydroxyethoxy-acetic acid-N,N-dimethylamide of the Formula (II) in a solvent optionally in the presence of a catalyst with thionyl chloride and removing the solvent by distillation.
摘要:
The present invention is related to 1-[(4-chlorophenyl)-phenylmethyl]-4-(2,2,2-trichloroethoxycarbonyl)-piperazine of the Formula (IV) and optically isomers thereof, process for preparation thereof and the use of the compound of the Formula (IV) in the preparation of 1-(4-chlorophenyl)-phenylmethyl-piperazine and optical isomers and salts thereof. 1-(4-chlorophenyl)-phenylmethyl-piperazine and optical isomers thereof are important intermediates in the preparation of non-sedating antihistamine-type active pharmaceutical ingredients.
摘要:
The invention refers to a novel process for the preparation of {2-[-(α-phenyl-p-chlorobenzyl)piperazin-1-yl]ethoxy}acetic acid, which comprises hydrolyzing an N,N-disubstituted {2-[-(α-phenyl-p-chlorobenzyl)piperazin-1-yl]ethoxy}acetamide, wherein said substituents are selected from alkyl groups having 1 to 4 carbon atoms optionally substituted by a phenyl group, alkenyl groups having 2 to 4 carbon atoms or cyclohexyl groups, or the substituents together with the adjacent nitrogen atom of the acetoamido group, form a morpholino group.
摘要:
The present invention is related to 1-[(4-chlorophenyl)-phenylmethyl]-4-(2,2,2-trichloroethoxycarbonyl)-piperazine of the Formula (IV) and optically isomers thereof, process for preparation thereof and the use of the compound of the Formula (IV) in the preparation of 1-(4-chlorophenyl)-phenylmethyl-piperazine and optical isomers and salts thereof. 1-(4-chlorophenyl)-phenylmethyl-piperazine and optical isomers thereof are important intermediates in the preparation of non-sedating antihistamine-type active pharmaceutical ingredients.
摘要:
According to the present invention, 2-chloroethoxy-acetic acid-N,N-dimethylamide of the Formula (I) is prepared by reacting 2-hydroxyethoxy-acetic acid-N,N-dimethylamide of the Formula (II) in a solvent optionally in the presence of a catalyst with thionyl chloride and removing the solvent by distillation.
摘要:
The present invention relates to a new process for the preparation of rosuvastatin [7-[4-(4-Fluorophenyl)-6-isopropyl-2-(methanesulphonyl-methyl-amino)-pyrimidin-5-yl]-(3R,51S)-dihydroxy-hept-6-enoic acid] of the formula (I) salts formed with bivalent cations, preferably with calcium or zinc ions, characterized in that rosuvastatin tert.-butylammonium salt is reacted with the appropriate bivalent cation, preferably with calcium or zinc ions in a mixture of a water immiscible or slightly miscible organic solvent and water and the formed salt is isolated.
摘要:
The present invention relates to crystalline Form I rosuvastatin zinc (2:1) salt, method of preparation thereof and use thereof as pharmaceutically active ingredient for the treatment of diseases related to lipid metabolism including hyperlipoproteinemia, hypercholesteremia, dyslipidemia and atherosclerosis.
摘要:
The invention relates to new crystalline forms I and II of (4R-cis)-6-[2-[3-phenyl-4-(phenyl-carbamoyl)-2-(4-fluoro-phenyl)-5-(1- methyl-ethyl)-pyrrol-1-yl]-ethyl]-2,2-dimethyl-[1,3]dioxane-4-yl-acetic acid-tertiary butyl ester of the Formula (I) and a process for the preparation thereof. The new polymorphs of the present invention are useful pharmaceutical intermediates which can be used in the preparation of the hydroxymethyl-glutaryl coenzyme (HMG-COA) reducing enzyme inhibitor having the INN (International Non-proprietory Name) atorvastatin
摘要:
The present invention relates to a new process for the preparation of rosuvastatin [7-[4-(4-Fluorophenyl)-6-isopropyl-2-(methanesulphonyl-methyl-amino)-pyrimidin-5-yl]-(3R,51S)-dihydroxy-hept-6-enoic acid] of the formula (I) salts formed with bivalent cations, preferably with calcium or zinc ions, characterized in that rosuvastatin tert.-butylammonium salt is reacted with the appropriate bivalent cation, preferably with calcium or zinc ions in a mixture of a water immiscible or slightly miscible organic solvent and water and the formed salt is isolated.