摘要:
The invention provides improved processes for the preparation of hydrated form of (S)-(+)-Clopidogrel bisulfate as well as improved processes for the preparation of form-I and form-II of (S)-(+)-Clopidogrel bisulfate.
摘要:
Improved processes for the preparation of different forms of (S)-(+)-Clopidogrel besylate, pharmaceutical compositions containing them and their use in medicine.
摘要:
Disclosed herein are the improved processes for the preparation of different forms of (S)-(+)-Clopidogrel besylate, pharmaceutical compositions containing them and their use in medicine.
摘要:
Disclosed herein are the improved processes for the preparation of different forms of (S)-(+)-Clopidogrel besylate, pharmaceutical compositions containing them and their use in medicine.
摘要:
The present invention describes novel forms of Rimonabant hydrochloride, processes for their preparation and pharmaceutical compositions containing them. Thus, the present invention discloses three new crystalline forms designated as Form II, Form III and Form IV of Rimonabant hydrochloride and novel amorphous forms of the salt.
摘要:
Disclosed are new salts of Clopidogrel viz. Clopidogrel mesylate, Clopidogrel besylate and Clopidogrel tosylate, methods for their preparation and pharmaceutical compositions containing them and their use in medicine.
摘要:
Disclosed are new salts of Clopidogrel viz. Clopidogrel mesylate, Clopidogrel besylate and Clopidogrel tosylate, methods for their preparation and pharmaceutical compositions containing them and their use in medicine.
摘要:
Disclosed are salts of Clopidogrel viz. Clopidegrel mesylate, Clopidegrel besylate and Clopidogrel tosylate, methods for their preparation and pharmaceutical compositions containing them and their use in medicine.
摘要:
The present invention discloses new salts of (2R)-4-oxo-4-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]-triazolo[4,3-a]pyrazin-7(8H)-yl]-1-(2,4,5-trifluorophenyl)butan-2-amine i.e. gentisate, adipate and trifluoro acetic acid salts. The invention also describes the new. crystalline and amorphous forms of (2R)-4-oxo-4-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]-triazolo[4,3-a]pyrazin-7(8H)-yl]-1-(2,4,5-trifluorophenyl)butan-2-amine gentisate. The present invention also discloses novel crystalline salt form of (2R)-4-oxo-4-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]-triazolo[4,3-a]pyrazin-7(8H)-yl]-1-(2,4,5-trifluorophenyl)butan-2-amine hydrochloride and novel crystalline and amorphous salt forms of besylate and process for their preparation and isolation.
摘要:
The present invention relates to synthesis of β-amino acid derivatives of formula (I) and its salts of formula (Ia) by a novel process. The process comprises the reduction of a protected or unprotected prochiral β-amino acrylic acid or derivative there of, by using borane containing reducing agents at atmospheric pressure. The resulting racemic β-amino compound is resolved to a pure stereoisomer of formula (I), specifically to (2R)-4-oxo-4-[3-Ctrifluoromethyl)-5,6-dihydrol[1,2,4]triazolo[4,3-alpyrazin-7(8H)-yl]-1-(2,4,4-trifluorophenyl)butan-2-amine. In an embodiment the invention disclosed polymorphic forms of formula (I), phosphate salt of formula (I) and also a Dibenzoyl-L-tartaric acid salt of formula (I).