摘要:
A crystalline, hydrated form of the sodium salt of 3-pyridyl-1-hydroxyethylidene-1,l-bisphosphonic acid contains from 6.4 up to 22 weight % of sodium, based on the anhydrous substance, and 15 up to 23 weight % of crystalline water if the sodium content is lower than 7.5 weight %, or 4.5 up to 18 weight % if the sodium content is higher than 7.5 weight %.
摘要:
A crystalline, hydrated form of the sodium salt of 3-pyridyl-1-hydroxyethylidene-1,l-bisphosphonic acid contains from 6.4 up to 22 weight % of sodium, based on the anhydrous substance, and 15 up to 23 weight % of crystalline water if the sodium content is lower than 7.5 weight %, or 4.5 up to 18 weight % if the sodium content is higher than 7.5 weight %.
摘要:
Crystalline monosodium salt of 3-pyridyl-1-hydroxyethylidene-1,1-bisphosphonic acid, having the X-ray pattern with characteristic interplanar distances 4.35; 8.44; 13.42 and 15.73 ú.
摘要:
Crystalline monosodium salt of 3-pyridyl-1-hydroxyethylidene-1,1-bisphosphonic acid, having the X-ray pattern with characteristic interplanar distances 4.35; 8.44; 13.42 and 15.73 ú.
摘要:
A process for the preparation of (1 S)-QR)-I -azabicyclo[2.2.2.]oct-3-yl 3,4-dihydro-1-phenyl- 2(1H)-isoquinoline carboxylate by reacting (1S)-alkyl 1-phenyl-1, 2,3, 4-tetrahydro-2- isoquinoline carboxylate with 3-(R)-quinuclidol in an inert solvent, where a primary alkyl ester of the carboxylate whose alkyl length is C1-C4 is used and the reaction is catalyzed by a non-nucleophilic base.
摘要:
The monosodium salt of 3-pyridyl-1-hydroxyethylidene-1,1-bisphosphonic acid in new amorphous forms, methods of preparation and a pharmaceutical formulation.
摘要:
The monosodium salt of 3-pyridyl-1-hydroxyethylidene-1,1-bisphosphonic acid in new amorphous forms, methods of preparation and a pharmaceutical formulation.
摘要:
A method for obtaining antidiabetic of formula (I), wherein the method comprises condensing of a 4-derivatized phenol or phenolate of general formula (II), wherein R is an amino group-containing organic residue, selected from the group comprising a residue of the following formula -NHR3, wherein R3 is hydrogen or a protecting group, which is removed before further treatment, and a residue of general formula (A), wherein Rb represents a carboxy group either in the free acid form or in the form of a salt or ester or another functional derivative or the nitrile group CN, and M represents a hydrogen or alkali metal atom, with a pyridine base of general formula (III), wherein Z is a leaving group other than a halogen, wherein, before or after carrying out the condensation, the following operations are carried out: (a) diazotizing the amino group present in organic residue R; (b) converting the diazotised residue R into a derivative of 2-halopropionate or 2-halopropionitrile of formula (B), wherein Rb is as defined above and X is a halogen; (c) cyclizing the derivative of 2-halopropionate or 2-halopropionitrile with thiourea; (d) hydrolysing the resulting imine thus giving pioglitazone of formula (I).