[EN] PROCESS FOR PREPARING OPTICALLY PURE ACTIVE COMPOUNDS<br/>[FR] PROCEDE DE PREPARATION DE COMPOSES ACTIFS OPTIQUEMENT PURES
申请人:ALTANA PHARMA AG
公开号:WO2004052882A1
公开(公告)日:2004-06-24
The invention relates to a novel process for preparing optically pure PPI having a sulphinyl structure using a chiral zirconium complex or a chiral hafnium complex.
这项发明涉及使用手性锆复合物或手性铪复合物制备具有亚砜结构的光学纯PPI的新工艺。
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.
Method for the enantioselective preparation of sulphoxide derivatives
申请人:Cohen Avraham
公开号:US20060281782A1
公开(公告)日:2006-12-14
The invention relates to a method for the enantioselective preparation of substituted sulphoxide derivatives. The method comprises carrying out an enantioselective oxidation of a sulphide of general formula (I): A-CH2—S—B (I), where A=a variously-substituted pyridyl nucleus and B=a heterocyclic group with a benzimidazole or imidazopyrdyl nucleus, by means of an oxidising agent in the presence of a catalyst based on tungsten or vanadium and a chiral ligand, followed, where necessary, by salt formation with a base to give the sulphoxide: A-CH2—SO—B (Ia). The above is of application to the enantioselective preparation of compounds such as the enantiomers of tenatoprazole and other comparable sulphoxides.
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.
Method for enantioselective preparation of sulphoxide derivatives
申请人:Sidem Pharma SA
公开号:US07528251B2
公开(公告)日:2009-05-05
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 —CH2—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.