- POLYMORPHIC FORM OF GRANISETRON HYDROCHLORIDE AND METHODS OF MAKING THE SAME
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Crystalline granisetron hydrochloride characterized by a powder x-ray diffraction pattern with peaks at about 14.3, 20.4, and 23.0±0.2 degrees two-theta and process of making the same are disclosed.
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Page/Page column 2
(2010/03/31)
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- POLYMORPHIC FORM OF GRANISETRON BASE, METHODS FOR OBTAINING IT AND FORMULATION CONTAINING IT
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Relates to a new polymorphic form of Granisetron base, Form I, to methods for obtaining thereof, to the method for obtaining Granisetron ? HCl and its use for preparing pharmaceutical formulations. The Form I is characterized by the X-ray powder dif f ractogram shown in Figure 1. Included in summarised form are the methods and solvents for obtaining the Form I: 1) Evaporation of hexane at atmospheric pressure; 2) Evaporation of acetone at atmospheric pressure; 3) Evaporation of toluene at atmospheric pressure; 4) Cooling of a saturated solution of diethyl ether to reflux temperature; 5) Evaporation of 2-propanol at atmospheric pressure; 6) Evaporation of tetrahydrofuran at atmospheric pressure; and 7) Cooling of a saturated solution of acetonitrile to reflux temperature.
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Page/Page column 13
(2009/01/24)
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- Indazolyl carboxylic acid amides useful for treating migraine clusters headache, trigeminal neuralgia or emesis
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Compounds of formula (I) and pharmaceutically acceptable salts thereof: STR1 wherein X is CO and Y is NH; Z is NR3 wherein R3 is hydrogen, C1-6 alkyl, C3-7 alkenyl-methyl, phenyl or phenyl C1-4 alkyl either of which phenyl moieties may be substituted by one or two of halogen, CF3, C1-6 alkoxy or C1-6 alkyl; and Ra is not present; or Z is N and Ra is as defined for R3 above; Rb is present when X-Y-R2 is attached at the phenyl ring and is selected from hydrogen, halogen, CF3, hydroxy, C1-6 alkoxy or C1-6 alkyl; R1 is hydrogen, halogen, CF3, C1-6 alkyl, C1-6 alkoxy, C1-6 alkylthio, C1-7 acyl, C1-7 acylamino, C1-6 alkylsulphonylamino, N(C1-6 alkylsulphonyl)-N-C1-4 alkylamino, C1-6 alkylsulphinyl, hydroxy, nitro or amino, aminocarbonyl, aminosulphonyl, aminosulphonylamino or N-(aminosulphonyl)-C1-4 alkylamino optionally N-substituted by one or two groups selected from C1-6 alkyl, C3-8 cycloalkyl, C3-8 cycloalkyl C1-4 alkyl, phenyl or phenyl C1-4 alkyl groups or optionally N-disubstituted by C4-5 polymethylene; R2 is a group of formula (a) STR2 wherein n is 2 or 3; and R4 is C1-7 alkyl, C3-8 cycloalkyl, C3-8 cycloalkyl-C1-2 alkyl, or a group (CH2)t R6 where t is 1 or 2 and R6 is thienyl, pyrrolyl or furyl optionally substituted by one or two substituents selected from C1-6 alkyl, C1-6 alkoxy, trifluoromethyl or halogen, or is phenyl optionally substituted by one or two substituents having 5-HT antagonist activity and/or gastric motility enhancing activity.
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