[EN] AN IMPROVED PROCESS FOR THE PREPARATION OF (4R)-1-[(2R,4R,5R)-3,3-DIFLUORO-4-HYDROXY-5-(HYDROXYMETHYL) OXOLAN-2-YL]-4-HYDROXY-1,3-DIAZINAN-2ONE AND ITS INTERMEDIATE COMPOUNDS [FR] PROCÉDÉ AMÉLIORÉ DE PRÉPARATION DE (4R)-1-[(2R,4R,5R)-3,3-DIFLUORO-4-HYDROXY-5-(HYDROXYMÉTHYL)OXOLAN-2-YL]-4-HYDROXY-1,3-DIAZINAN-2-ONE ET DE SES COMPOSÉS INTERMÉDIAIRES
摘要:
The present invention relates to an improved process for the preparation of (4R)-1-[(2R, 4R, 5R)-3,3-difluoro-4-hydroxy-5- (hydroxymethyl) oxolan-2-yl]-4-hydroxy-1,3-diazinan-2-one compound of formula-1 and its intermediate compounds. [Formula should be inserted here]. The present invention also relates to the process for the purification of (4R)-1-[(2R, 4R, 5R)-3,3-difluoro-4-hydroxy-5- (hydroxymethyl) oxolan-2-yl]-4-hydroxy-1,3-diazinan-2-one compound of formula-1 to get pure compound of formula-1.
[EN] SYNTHETIC ROUTE TO 2'-DEOXY-2',2'-DIFLUOROTETRAHYDROURIDINES<br/>[FR] VOIE DE SYNTHÈSE POUR 2'-DÉSOXY-2',2'-DIFLUOROTÉTRAHYDROURIDINES
申请人:OTSUKA PHARMA CO LTD
公开号:WO2015066162A1
公开(公告)日:2015-05-07
The present invention relates to methods and intermediates for synthesizing 2'-deoxy-2',2'-difluorotetrahydrouridine compounds.
本发明涉及合成2'-脱氧-2',2'-二氟四氢尿苷化合物的方法和中间体。
[EN] 2'-DEOXY-2',2'-DIFLUOROTETRAHYDROURIDINES WITH HIGH PURITY AND METHODS OF MAKING THE SAME<br/>[FR] 2'-DÉSOXY-2',2'-DIFLUOROTÉTRAHYDROURIDINES DE PURETÉ ÉLEVÉE ET LEURS PROCÉDÉS DE FABRICATION
申请人:OTSUKA PHARMA CO LTD
公开号:WO2021071890A1
公开(公告)日:2021-04-15
The invention relates to methods of synthesizing 2'-deoxy-2',2'-difluorotetrahydrouridine with increased purity and uniform particle size distribution. In particular, methods of the invention include crystallization and isolation procedures rendering synthetic reaction intermediates. The invention further includes compositions comprising the final compound in highly pure form, including lower number of impurities and lower levels of individual and total impurities.
[EN] 2 ' -FLU0R0-2 ' -DEOXYTETRAHYDROURIDINES AS CYTIDINE DEAMINASE INHIBITORS<br/>[FR] CERTAINS COMPOSÉS, COMPOSITIONS ET PROCÉDÉS
申请人:EISAL CORP OF NORTH AMERICA
公开号:WO2009052287A1
公开(公告)日:2009-04-23
The present invention provides certain tetrahydrouridine derivative compounds, pharmaceutical compositions and kits comprising such compounds, and methods of making and using such compounds.
The Degradation of the Antitumor Agent Gemcitabine Hydrochloride in an Acidic Aqueous Solution at pH 3.2 and Identification of Degradation Products
作者:Patrick J. Jansen、Michael J. Akers、Robert M. Amos、Steven W. Baertschi、Gary G. Cooke、Douglas E. Dorman、Craig A.J. Kemp、Steven R. Maple、Karen A. McCune
extrapolated and activation energy calculated. Four major degradation products were identified. Only one of these degradation products, the uridine analogue of gemcitabine, was a known degradation product of gemcitabine and was identified by comparison with synthesized material. The other three degradation products were isolated and characterized by spectroscopic techniques. Two of these products were determined