摘要:
The present invention relates to a process for preparing Bosentan Monohydrate; in particular, the present invention provides the preparation of the novel 4-tert-butyl-N-[6-(2-hydroxy-ethoxy)-5-(2-methoxy-phenoxy)-2-(2-pyrimidinyl)-pyrimidin-4-yl]-benzenesulfonamide sodium salt as an ethylene glycol solvate (Bosentan sodium salt ethylene glycol solvate), which is a useful intermediate for obtaining Bosentan Monohydrate in a pure form.
摘要:
The present invention relates to a process for preparing Nebivolol and, more particularly, to an improved method of debenzylation of a compound of formula (II) useful for preparing nebivolol endowed with high purity.
摘要:
The invention provides a novel polymorphic form C of bazedoxifene acetate, methods of preparing the polymorphic form, and compositions and methods of treatment using the polymorphic form.
摘要:
The present invention relates to a process for preparing Bosentan Monohydrate; in particular, the present invention provides the preparation of the novel 4-tert-butyl-N-[6-(2-hydroxy-ethoxy)-5-(2-methoxy-phenoxy)-2-(2-pyrimidinyl)-pyrimidin-4-yl]-benzenesulfonamide sodium salt as an ethylene glycol solvate (Bosentan sodium salt ethylene glycol solvate), which is a useful intermediate for obtaining Bosentan Monohydrate in a pure form.
摘要:
A process for resolving dorzolamide trans racemate, which comprises reacting said racemate with (1S)-(+)-10-camphorsulfonic acid so obtaining the (4S,6S) enantiomer by selectively precipitating and recovering the camphorsulfonic acid salt thereof (dorzolamide camphorsulfonate), and neutralizing dorzolamide camphorsulfonate to obtain dorzolamide.
摘要:
A process for resolving dorzolamide trans racemate, which comprises reacting said racemate with (1S)-(+)-10-camphorsulfonic acid so obtaining the (4S,6S) enantiomer by selectively precipitating and recovering the camphorsulfonic acid salt thereof (dorzolamide camphorsulfonate), and neutralizing dorzolamide camphorsulfonate to obtain dorzolamide.
摘要:
The present invention relates to a process for preparing Nebivolol and, more particularly, to an improved method of debenzylation of a compound of formula (II) useful for preparing nebivolol endowed with high purity.
摘要:
The present invention relates to macrolide compounds endowed with antiinflammatory activity and more particularly relates to new stable crystalline forms of a macrolide derivative with antiinflammatory activity, processes for the preparation of such forms, pharmaceutical compositions containing them as active ingredient and the use of said crystalline forms for the treatment of inflammatory diseases.
摘要:
the present invention relates to macrolide compounds endowed with antiinflammatory activity and more particularly relates to new stable crystalline forms of a macrolide derivative with antiinflammatory activity, processes for the preparation of such forms, pharmaceutical compositions containing them as active ingredient and the use of said crystalline forms for the treatment of inflammatory diseases.
摘要:
A process and new oxazolinic intermediates for the preparation of 4-(8-chloro-5,6-dihydro-11H-benzo-[5,6]-clohepta-[1,2-b]-pyridin-11-ylide-ne)-1-piperidinecarboxylic acid ethyl ester (loratadine) is described. The process starts from 2-(4,4-dimethyl-4,5-dihydrooxazol-2-yl)-3-methyl-pyridine, a new intermediate to obtain loratadine. 2-(4,4-dimethyl-4,5-dihydro-oxazol-2-yl)-3-methyl-pyridine is condensed with 3-chloro-benzyl-chloride and the resultant product is treated with Grignard reagent of 4-chloro-N-methyl-piperidine. [3-(2-(3-chloro-phenyl)-ethyl]-pyridin-2-yl-]-1-(methyl-piperidin-4-yl)-methanone is obtained for subsequent hydrolysis. Starting from this last compound it is possible to obtain loratadine with known methods.