Synthesis and Characterization of Metabolites and Potential Impurities of the Antiulcerative Drug Tenatoprazole
摘要:
Tenatoprazole (Ulsacare (R)) is a recently developed antiulcerative drug used for the treatment of both erosive and nonerosive gastroesophageal reflux disease. During the bulk synthesis of tenatoprazole, we have observed four impurities (tenatoprazole N-oxide, tenatoprazole sulfone N-oxide, N-methyl tenatoprazole, and desmethoxy tenatoprazole) and two metabolites (tenatoprazole sulfide and tenatoprazole sulfone). The present work describes the synthesis and characterization of these impurities.
Method For Enantioselective Preparation Of Sulphoxide Derivatives
申请人:Cohen Avraham
公开号:US20070299261A1
公开(公告)日:2007-12-27
The present invention concerns enantioselective preparation of sulphoxide derivatives or their salts. The method consist in performing an enantioselective oxidation of a sulphur of general formula (I) A-CH
2
—SB, wherein: A is a diversely substituted pyridinyl ring and B is a heterocyclic radical comprising an imidazo-pyridinyl ring, using an oxidizing agent in the presence of a titanium
(IV)
-based catalyst and a chiral ligand consisting of a cyclic beta or gamma-amino-alcohol, in an organic solvent, followed, if required, by salt formation with a base. The invention is useful for preparing sulphoxides useful in therapeutics.
Enantiomer (-) of tenatoprazole and the therapeutic use thereof
申请人:Cohen Avraham
公开号:US20050119298A1
公开(公告)日:2005-06-02
The invention relates to enantiomer (−) of tentoprazole. The inventive enantiomer (−) of tenatoprazole, or (−)-5-methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridyl)methyl]sulfonyl]imidazol[4,5-b]pyridine exhibits improved pharmacokinetic properties which make it possible to use a once a day posology of a drug for relevant indications. Said invention can be used for curing digestive pathologies.
[EN] CONTINUOUS FLOW PROCESS FOR THE PREPARATION OF SULPHOXIDE COMPOUNDS<br/>[FR] PROCESSUS D'ÉCOULEMENT CONTINU POUR LA PRÉPARATION DE COMPOSÉS SULFOXYDE
申请人:COUNCIL SCIENT IND RES
公开号:WO2012004802A8
公开(公告)日:2012-07-12
A new titanate/(+)-(1R,2S)-cis-1-amino-2-indanol system for the asymmetric synthesis of (S)-tenatoprazole
作者:Madeleine Delamare、Sébastien Belot、Jean-Claude Caille、Frédéric Martinet、Henri B. Kagan、Vivien Henryon
DOI:10.1016/j.tetlet.2009.01.111
日期:2009.4
Tenatoprazole, a substituted imidazopyridinyl derivative, is an irreversible proton pump inhibitor (PPI), which is used for the prevention and treatment of gastric acid-related diseases. A new highly efficient asymmetric oxidation using cumene hydroperoxide (CHP) as the oxidant in the presence of titanium tetraisopropoxide (Ti(OiPr)(4)) and (+)-(1R,2S)-cis-1-amino-2-indanol, in a polar aprotic solvent at 0-20 degrees C, has been developed to prepare tenatoprazole with an enantiomeric excess of >99%, a chemoselectivity of >90% and a chemical yield of >90% from the corresponding sulfide. This procedure was successfully implemented on scales ranging from 100 mg to multiple kilograms. Detailed studies of the parameters controlling purity and yield for this reaction are presented. (C) 2009 Elsevier Ltd. All rights reserved.
Synthesis and Characterization of Metabolites and Potential Impurities of the Antiulcerative Drug Tenatoprazole
作者:Ganta Madhusudhan Reddy、V. V. N. K. V. Prasada Raju、J. Moses Babu、Ch. Praveen、Mayur Khunt、K. Mukkanti、Padi Pratap Reddy
DOI:10.1080/00397910801986192
日期:2008.5
Tenatoprazole (Ulsacare (R)) is a recently developed antiulcerative drug used for the treatment of both erosive and nonerosive gastroesophageal reflux disease. During the bulk synthesis of tenatoprazole, we have observed four impurities (tenatoprazole N-oxide, tenatoprazole sulfone N-oxide, N-methyl tenatoprazole, and desmethoxy tenatoprazole) and two metabolites (tenatoprazole sulfide and tenatoprazole sulfone). The present work describes the synthesis and characterization of these impurities.