Abstract:
The present invention relates to a process for the enantiomeric enrichment of salbutamol and salbutamol precursors and the acid-addition salts thereof: (I) where R is hydrogen or benzyl, R' is hydrogen or benzyl and X is CH 2 OH or COO-C 1 -C 4 -alkyl the process comprising the crystallization of a compound of the formula (I) in the form of its acid-addition salt with an achiral carboxylic acid A that has at least three carbon atoms and a solubility of less than 50 g/l in water at pH
Abstract:
Die vorliegende Erfindung betrifft ein kristallines Salz von 3-[2- (Dimethylamino)methyl-(cyclohex-1-yl)]-phenol und Chlorwasserstoff, bevorzugt in einer Zusammensetzung von 1:1, verschiedene kristalline Formen dieses Salzes sowie Verfahren zu deren Herstellung, eine pharmazeutische Zusammensetzung und die Verwendung des Salzes als pharmazeutischer Wirkstoff in einem Arzneimittel.
Abstract:
Methods and compositions are provided for synthesizing ionic liquids from lignin derived compounds comprising: contacting a starting material comprising lignin with a depolymerization agent to depolymerize the lignin and form a mixture of aldehyde containing compounds; contacting the mixture of aldehyde containing compounds with an amine under conditions suitable to convert the mixture of aldehyde containing compounds to a mixture of amine containing compounds; and contacting the mixture of amine containing compounds with an acid under conditions suitable to form an ammonium salt, thereby preparing the ionic liquid.
Abstract:
Novel quaternary ammonium compounds of the formula (I) and any stereoisomers thereof, wherein, R 1 , R 2 , and R 3 independently represent C 1 -C 6 alkyl, optionally substituted with phenyl or hydroxyl, or both, and wherein any two of R 1 , R 2 and R 3 may form a ring together with the quaternary ammonium nitrogen; R 4 represents -H, -CH 3 , or -CO-R 4 -1, wherein R 4-1 represents -(C 1 -C 4 alkyl), -(C 1 -C 4 alkoxy), or NR 4-2 R 4-3 , wherein R 4-2 and R 4-3 independently represent -H or -(C 1 -C 4 alkyl); R 5 , R 6 and R 7 independently represent -H, -OCH 3 , -OH, -CONH 2 , -SO 2 NH 2 , -F, -Cl, -Br, -I, -CF 3 , or -(C 1 -C 4 alkyl), optionally substituted with one or two -OH, -(C 1 -C 4 alkoxy), -COOH, or -CO-O-(C 1 -C 3 alkyl); and X represents an anion of a pharmaceutically acceptable acid, the compounds for use as medicaments, use of the compounds for the manufacture of specific medicaments, and pharmaceutical compositions comprising the compounds. The present invention also concerns a method of treatment involving administration of the compounds.
Abstract:
The present invention is the use of a compound comprising two or more covalently bonded polymerisable vinyl groups and one or more covalently bonded ionic groups selected from a quaternary ammonium group; a quaternary phosphonium group; or a tertiary sulphonium group, as an ionic cross-linker. The cross-linkers of the invention may be used to form an ionomer membrane. Methods for forming the cross-linkers of the invention are also disclosed.
Abstract:
Novel quaternary ammonium compounds of the formula and any stereoisomers thereof, wherein R 1 , R 2 R 3 , R 4 , R 5 , R 6 , R 7 , and X - are defined herein. The compounds are useful as medicaments for treatment of treatment of asthma, a group of breathing disorders termed Chronic Obstructive Pulmonary Disease (COPD), allergic rhinitis, rhinorrhea due to the common cold, and urinary disorder.
Abstract:
The invention relates to a method for producing derivatives of 3,3-diarylpropylamines of general formula (I) and sterically highly pure, stable intermediate products, and to their use for producing pharmaceutical compositions.
Abstract:
The present invention relates to solid forms of (±)-O-desmethylvenlafaxine salts, processes for preparation, pharmaceutical compositions, and method of treating thereof. More particularly, the present invention provides solid forms of acid addition salts of (±)- O-desmethylvenlafaxine wherein the acid counter ion is provided by an acid selected from the group consisting of oxalic acid, benzoic acid and lactic acid.
Abstract:
The present invention relates to solid forms of (±)-O-desmethylvenlafaxine salts, processes for preparation, pharmaceutical compositions, and method of treating thereof. More particularly, the present invention provides solid forms of acid addition salts of (±)- O-desmethylvenlafaxine wherein the acid counter ion is provided by an acid selected from the group consisting of oxalic acid, benzoic acid and lactic acid.