cas 952340-39-5, 5,6,7,7a-Tetrahydrothieno[3,2-c]pyridin-2(4H)-one 4-methylbenzenesulfonate

Articles about 952340-39-5Total 9 be found

PROCESS FOR PREPARING A PHARMACEUTICAL COMPOUND
The object of the present invention is a one-pot process for preparing the 2-acetoxy-5-(2-fluoro-α-cyclopropyl-carbonyl-benzyl)-4,5,6,7-tetrahydro-4H-tieno[3,2-c]-pyridine (prasugrel) of the formula (I) by reacting the 5,6,7,7a-tetrahydro-4H-tieno[3,2-c]-pyridine-2-on of the formula (II) with 2-bromo-1-cyclopropyl-2-(2-fluorophenyl)-etanone of the formula (III) or with 2-chloro-1-cyclopropyl-2-(2-fluorphenyl)-etanone of the formula (IIIa) and acetylating of the formed compound of the formula (IV), wherein the reaction is carried out in the presence of an organic base with an acetylation agent without isolating the compound of the formula (IV). The coupling and acetylation are carried out in the presence of the same organic base such as triethylamine, N,N-diisopropyl-ethylamine or pyridine. At the end of the process the prasugrel of the formula (I) is purified by recrystallization from an organic solvent or a mixture of solvents.
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(2013/03/26)

AN IMPROVED PROCESS FOR THE PREPARATION OF PRASUGREL HYDROCHLORIDE AND ITS INTERMEDIATES
The present invention provides an improved process for the preparation of prasugrel and its pharmaceutical acceptable salt. Prasugrel chemically known as 2-acetoxy-5-(a- cyclopropylcarbonyl-2-fluorobenzyl)-4,5,6,7-tetrahydrothieno[3,2-c]-pyridine or 5-[2- cyclopropyl-l-(2-fluorophenyl)-2-oxoethyl]-4,5,6,7-tetrahydrothieno[3,2,-c]pyridine- 2yl acetate and having the structural formula (I) and its pharmaceutically acceptable salts. The present invention also provides an improved process for the preparation of cyclopropyl 2-fluorobenzyl ketone, 2-Fluoro-a-cyclopropyl carbonylbenzyl bromide, 5,6,7,7a Tetrahydro-4H- theino-[3,2-c]- pyridone-2 p-toluenesulfonate and its hydrochloride salt.
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(2012/01/14)

METHOD FOR PREPARING PHARMACEUTICALLY ACTIVE INGREDIENT AND INTERMEDIATES THEREOF
The present invention is related to a safe and industrially applicable method for the preparation of 2-acetoxy-5-(2-fluoro-α-cyclopropyl- carbonyl-benzyl)-4,5,6,7-tetrahydro-4H-thieno[3,2-c]pyridine in a quality suitable for use as pharmaceutically active ingredient wherein the concentration of the impurities of the Formula.(XXIV) or (XXIVa) is reduced.
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(2012/05/05)

Processes For Preparing Prasugrel And Pharmaceutically Acceptable Salts Thereof
Disclosed are improved processes for preparing prasugrel compound of formula-(1), its intermediates and pharmaceutically acceptable salts.
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(2012/08/27)

NOVEL AND IMPROVED PROCESSES FOR THE PREPARATION OF PRASUGREL, ITS INTERMEDIATES AND PHARMACEUTICALLY ACCEPTABLE SALTS
The present invention relates to novel and improved processes for the preparation of prasugrel compound of formula-(1), its intermediates and pharmaceutically acceptable salts.
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(2011/04/26)

IMPROVED PROCESS FOR PREPARING A PHARMACEUTICAL COMPOUND
The object of the present invention is a one-pot process for preparing the 2-acetoxy-5-(2-fluoro-α-cyclopropyl-carbonyl-benzyl)-4,5,6,7-tetrahydro-4H-tieno[3,2-c]-pyridine (prasugrel) of the formula (I) by reacting the 5,6,7,7a-tetrahydro-4H-tieno[3,2-c]-pyridine-2-on of the formula (II) with 2-bromo-1-cyclopropyl-2-(2-fluorophenyl)-etanone of the formula (III) or with 2-chloro-l-cyclopropyl-2-(2-fluorphenyl)-etanone of the formula (IIIa) and acetylating of the formed compound of the formula (IV), wherein the reaction is carried out in the presence of an organic base with an acetylation agent without isolating the compound of the formula (IV). The coupling and acetylation are carried out in the presence of the same organic base such as triethylamine, N,N-diisopropyl-ethylamine or pyridine. At the end of the process the prasugrel of the formula (I) is purified by recrystallization from an organic solvent or a mixture of solvents.
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(2011/07/09)

PROCESS FOR PREPARING PHARMACEUTICAL COMPOUNDS AND INTERMEDIATE COMPOUNDS
The object of the present invention is a process for preparing the 2-acetoxy-5-(2-fluor-α- cyclopropyl-carbonyl-benzyl)-4,5,6,7-tetrahydro-4H-tieno[3,2-c]pyridine (prasugrel) of the formula (I). The process starts form crystalline 5-trityl-4,5,6,7-tetrahydro-tieno[3,2- c]pyridine of the formula (VI). Further objects of the present invention are two novel crystalline forms of 5-trityl-4,5,6,7- tetrahydro-tieno[3,2-c]pyridine of the formula (VI) and the use thereof for preparing the compound of the formula (V) and process preparing thereof.
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(2011/07/09)

IMPROVED PROCESS FOR THE PREPARATION OF PRASUGREL AND ITS PHARMACEUTICALLY ACCEPTABLE SALTS
The present invention relates to an improved process for the preparation of prasugrel compound of formula- 1 and its pharmaceutically acceptable salts thereof.
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Page/Page column 16; 19

(2009/06/27)

2-silyloxy-tetrahydrothienopyridine, salt thereof and process for preparing the same
A 2-silyloxy-4,5,6,7-tetrahydrothieno[3,2-c]pyridine represented by the formula (I): STR1 wherein R 1, R 2 and R 3 each independently represent an alkyl group having 1 to 10 carbon atoms or an aryl group,and a salt thereof and a process for preparing the same, and a 5-alkyl-2-silyloxy-4,5,6,7-tetrahydrothieno[3,2-c]-pyridine represented by the formula (IV): STR2 wherein R 1, R 2 and R 3 represent the same meanings as described above; R 4 represents a hydrogen atom, an alkoxycarbonyl group having 2 to 10 carbon atoms, an acyl group having 2 to 10 carbon atoms or a cyclo-alkylcarbonyl group having 4 to 10 carbon atoms; andR 5 represents a halogen atom, an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms,which is useful as a synthetic intermediate of an antiplatelet medicine and an elastase inhibitor, etc., and a process for preparing the same.
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(2008/06/13)