116091-64-6Relevant academic research and scientific papers
Preparation method of tamsulosin hydrochloride
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Paragraph 0041-0043, (2020/07/13)
The invention provides a preparation method of tamsulosin hydrochloride. Specifically, the preparation method comprises a step of reacting 5-acetonyl-2-methoxybenzenesulfonamide with (R)-1-phenylethylamine under the action of a reducing agent to obtain a compound as shown in a formula (IV) or pharmaceutically acceptable salt thereof, and further comprises a step of preparing tamsulosin hydrochloride from the compound as shown in the formula (IV) or pharmaceutically acceptable salt thereof. The preparation method provided by the invention is high in safety and strong in operability, avoids theuse of a heavy metal catalyst, and has an industrial actual use value.
A METHOD OF PREPARATION OF (R)-(-)-5(2-AMINOPROPYL)-2-METHOXYBENZENESULFONAMIDE
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Page/Page column 10, (2008/06/13)
A method of preparation of (R)-(-)-5-(2-aminopropyl)-2-methoxybenzenesulfonamide of formula I and its use for production tamsulosin. A protective group is introduced to N-[(1R)-2-(4-methoxyphenyl)-1-methylethyl]-N- [(1 R)-1-phenylethyl)]amine and the resulting amide of formula IX is chlorosulfonated and the resulting sulfochloride is converted to a sulfonamide of formula X, from which the compound of formula I is obtained by hydrogenation.
Tamsulosin derivative
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Page/Page column 11, (2008/06/13)
The optically active compound, R(?)-5-[2-[[2-(2-ethoxyphenoxy)ethyl]amino]propyl]-2-hydroxybenzenesulfonamide in good optical purity, a metabolite of the α1-adrenergic blocking agent tamsulosin, and methods for the preparation thereof. Pharmaceutical compositions including the optically active compound and methods of treatment comprising administration of an effective α-adrenergic antagonistic amount of such compositions to mammals.
TAMSULOSIN DERIVATIVE
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Page/Page column 17-18, (2008/06/13)
The optically active compound, R (-)-5-[2-[[2-(2-ethoxyphenoxy)ethyl] amino] propyl]-2-hydroxybenzenesulfonamide in good chemical and optical purity, a metabolite of the α1-adrenergic blocking agent tamsulosin, and methods for the preparation thereof. Pharmaceutical compositions including the optically active compound and methods of treatment comprising direct administration of an effective α1-adrenergic antagonistic amount of such compositions to mammals.
