摘要:
Pharmaceutically suitable crystalline and amorphous alkali and earth-alkali salts of 2-n-butyl-4-chloro-5-h idroxymethyl-1-[[2'-(1 H-tetrazole-5-yl)[1.1'-biphenyl]-4-yl]-1 Himidazole have been prepared and new manufacturing, purification and isolation procedure for said salts in high purity have been described. Stable pharmaceutical compositions containing new crystalline potassium salts of 2-n-butyl-4-chloro-5hidroxymethyl-1-[[2'-(1 H-tetrazole-5-yl)[1.1'-biphenyl]-4-yl]-1 H-imidazole have been prepared.
摘要:
New form of irbesartan having favourable chargeability is prepared from the alcoholic/etheric or ketonic solution of irbesartan after slow cooling with sporadic or light agitation and alternatively new crystalline form of an acid addition salt of irbesartan is prepared from the aqueous solution of a sodium salt of irbesartan after strongly acidifying aforesaid solution and subsequently adjusting pH with an alkali. Those are used in manufacturing a pharmaceutical composition.
摘要:
Pharmaceutically suitable crystalline and amorphous alkali and earth-alkali salts of 2-n-butyl-4-chloro-5-h idroxymethyl-1-[[2'-(1 H-tetrazole-5-yl)[1.1'-biphenyl]-4-yl]-1 Himidazole have been prepared and new manufacturing, purification and isolation procedure for said salts in high purity have been described. Stable pharmaceutical compositions containing new crystalline potassium salts of 2-n-butyl-4-chloro-5hidroxymethyl-1-[[2'-(1 H-tetrazole-5-yl)[1.1'-biphenyl]-4-yl]-1 H-imidazole have been prepared.
摘要:
4-bromomethyl-2'-formylbiphenyl and 4-bromomethyl-2'-hydroxymethylbiphenyl are useful starting material for the preparation various angiotenzin II antagonists, which are prepared from 4-bromomethyl-2'-cyanobiphenyl or 4'- bromomethylbiphenylcarboxyilic derivatives using selected hydride reagent.
摘要:
A process for the synthesis of tetrazol derivative has been developed which starts from a tetrazole derivative where acidic hydrogen atom has been replaced by a protecting group and the deprotection is performed with a catalytic amount of organic acid and can proceed in an aqueous solvent.
摘要:
The invention relates to a process of preparing amorphous (4R-cis)-6-[2-[3-phenyl-4-(phenylcarbamoyl)-2-(4-fluorophenyl)-5-(1-methylethyl)-pyrrol-1-yl]-ethyl]-2,2-dimethyl-[1,3]-dioxane-4-yl-acetic acid - tertiary butyl ester which is a useful pharmaceutical intermediate in the preparation of atorvastatin salts.
摘要:
Present invention refers to the process of preparing amorphous atorvastatin calcium without intermediate isolation of crystal or undefined mixture of crystal and amorphous atorvastatin calcium, respectively. Forming of calcium atorvastatin salt is carried out in a mixture of chlorinated organic solvent or cyclic hydrocarbon solvent, respectively, the non-hydroxylic organic solvent, and water, the source of calcium ions is calcium acetate or calcium chloride, respectively.