摘要:
A process for purifying a compound of formula (1) from a des-fluoroimpurity of formula (7) wherein R in both compounds (1) and (7) represents a hydrogen atom, a lower alkyl group, an aryl group, an aralkyl group, an alkoxycarbonyl group or an aryloxycarbonyl group, which comprises the step of reacting a compound of formula (1) with toluene sulfonic acid.
摘要:
The invention relates to a compound, and pharmaceutically acceptable salts, having formula (I), wherein: R represents an alkyl or alkynyl group having 1-4 carbon atoms, or a phenyl group optionally substituted by C1-4 alkyl, alkylthio, alkoxy, halogen, nitro, acylamino, methylsulfonyl or methylenedioxy, or represents tetrahydronaphthyl; R1 represents hydrogen, trifluoro (C¿1-4?) alkyl, alkyl or alkynyl; X represents hydrogen, alkyl having 1-4 carbon atoms, alkoxy, trifluoroalkyl, hydroxy, halogen, methylthio or aralkoxy; R?2¿ represents: a C¿1?-C10 alkyl group; a phenyl group optionally substituted by one or more of the following groups: a C1-C10 alkyl group, a halogen group, a nitro group, hydroxy group, and/or an alkoxy group.
摘要:
Process for providing a compound of formula (6), a hydrate, solvate, and/or salt thereof, for example a pharmaceutically acceptable acid addition salt, comprising the step of reacting a compound of formula (1), with a tosyl moiety, providing compound.
摘要:
The invention relates to a zolpidem salt, excluding the salt zolpidem tartrate exhibiting a melting endotherm corresponding to zolpidem free base upon heating from about 20 °C to about 250 °C at a rate of 5 °C/minute.
摘要:
The present invention is directed towards modified release tablets comprising a tablet matrix having dispersed therein tamsulosin or a pharmaceutically acceptable salt thereof and optionally having an enteric coating over said matrix with a dissolution profile such that in each of the media SIF, FaSSIF, and FeSSIF said tablet releases not more than 60% of said tamsulosin at 2 hours elapsed time in USP 2 apparatus using 500 ml of said media at 50-100 rpm paddle speed.
摘要:
Paroxetine salt compositions having improved stability are formed by controlling the pH to 6.5 or less. The compositions can be made with the air of water without significant coloration problems. The paroxetine salt include paroxetine hydrochloride salts but preferably use paroxetine sulfonate salts such as paroxetine methane sulfonate.
摘要:
The invention relates to a compound, and pharmaceutically acceptable salts, having formula (I), wherein: R represents an alkyl or alkynyl group having 1-4 carbon atoms, or a phenyl group optionally substituted by C1-4 alkyl, alkylthio, alkoxy, halogen, nitro, acylamino, methylsulfonyl or methylenedioxy, or represents tetrahydronaphthyl; R1 represents hydrogen, trifluoro (C¿1-4?) alkyl, alkyl or alkynyl; X represents hydrogen, alkyl having 1-4 carbon atoms, alkoxy, trifluoroalkyl, hydroxy, halogen, methylthio or aralkoxy; R?2¿ represents: a C¿1?-C10 alkyl group; a phenyl group optionally substituted by one or more of the following groups: a C1-C10 alkyl group, a halogen group, a nitro group, hydroxy group, and/or an alkoxy group.
摘要:
The invention relates to a compound, and pharmaceutically acceptable salts, having formula (I), wherein: R represents an alkyl or alkynyl group having 1-4 carbon atoms, or a phenyl group optionally substituted by C1-4 alkyl, alkylthio, alkoxy, halogen, nitro, acylamino, methylsulfonyl or methylenedioxy, or represents tetrahydronaphthyl; R1 represents hydrogen, trifluoro (C¿1-4?) alkyl, alkyl or alkynyl; X represents hydrogen, alkyl having 1-4 carbon atoms, alkoxy, trifluoroalkyl, hydroxy, halogen, methylthio or aralkoxy; R?2¿ represents: a C¿1?-C10 alkyl group; a phenyl group optionally substituted by one or more of the following groups: a C1-C10 alkyl group, a halogen group, a nitro group, hydroxy group, and/or an alkoxy group.
摘要:
The invention relates to a pharmaceutical tablet comprising a tablet matrix having dispersed therein 0.1 to 10 mg of tamsulosin or a pharmaceutically acceptable salt thereof, and optionally having an enteric coating over said matrix, wherein said tablet is a modified release tablet and has a dissolution profile such that in each of the media SIF, FaSSIF, and FeSSIF, said tablet releases not more than 60% of said tamsulosin at 2 hours elapsed time in USP 2 apparatus using 500 ml of said media at 50-100 rpm paddle speed, to a monolithic pharmaceutical tablet, comprising 0.1 to 10 mg of tamsulosin or a pharmaceutically acceptable salt thereof, 10 wt% - 90 wt% hydroxypropyl methylcellulose, and a total tablet weight of 10 to 300 mg, to a unit dosage form for treating or ameliorating the conditions of benign prostatic hyperplasia comprising an effective amount of one or more tablets as mentioned above, and to a method for treating the symptoms of benign prostatic hyperplasia, which comprises administering to a patient in need thereof one or more tablets as mentioned above.
摘要:
A new process to obtain pramipexole and related products is described. The process involves the reaction of new compounds of formula (6), wherein R is hydrogen or acyl group, R3 and R4 are either the same and each of them represents an alkoxy group of 1-4 carbons or they together form a C2-C5 alkylenedioxy group or an oxo-group, with an alkylamine in the presence of a reducing agent or a hydrogen gas with hydrogenation catalyst. A process to obtain new compounds of formula (6) is also described.