Chemistry Development of a Convergent Route to Trecetilide Hemi-Fumarate
摘要:
A novel, efficient, stereoselective synthetic route for N-(4-{4-[ethyl(6-fluoro -6-methylheptyl)amino]-1-(S)-hyd roxybutyl}-phenyl)methanesulfonamide hemi-fumaric acid salt (trecetilide hemi-fumarate, Figure 1) has been developed. The process features a convergent approach, which assembles two key intermediates in the last step to form the final molecule, which is then isolated by pH-controlled extraction. The new route offers significant yield and purity advantages over the previous route. However, the solvent volume and cycle time were not fully optimized due to the termination of the project.
Chemistry Development of a Convergent Route to Trecetilide Hemi-Fumarate
摘要:
A novel, efficient, stereoselective synthetic route for N-(4-{4-[ethyl(6-fluoro -6-methylheptyl)amino]-1-(S)-hyd roxybutyl}-phenyl)methanesulfonamide hemi-fumaric acid salt (trecetilide hemi-fumarate, Figure 1) has been developed. The process features a convergent approach, which assembles two key intermediates in the last step to form the final molecule, which is then isolated by pH-controlled extraction. The new route offers significant yield and purity advantages over the previous route. However, the solvent volume and cycle time were not fully optimized due to the termination of the project.
Compounds and methods for preparing methanesulfonamides
申请人:MacKey Suzanne Sonja
公开号:US20050148796A1
公开(公告)日:2005-07-07
A process for preparing (S)-(−)-N-[4-[4-[ethyl(6-fluoro-6-methylheptyl)amino]-1-hydroxylphenyl]methanesulfonamide hemifumarate salt, which comprises reacting N-[4-[(2S)-tetrahydro-5-hydroxy-2-furanyl]phenyl]methanesulfonamide(IIa) with fluoroamine (III) in the presence of triacetoxyborohydride and ethyl acetate to provide [4-[-4-[ethyl(6-fluoro-6-methylheptyl)amino]-1-hydroxylphenyl]methanesulfonamide(I) and then converting I into the hemifumarate salt Ia. A process for preparing IIa is also claimed as well as intermediates IIa-IId.
COMPOUNDS AND METHODS FOR PREPARING METHANESULFONAMIDES
申请人:PHARMACIA & UPJOHN COMPANY
公开号:EP1395549A1
公开(公告)日:2004-03-10
US7232930B2
申请人:——
公开号:US7232930B2
公开(公告)日:2007-06-19
[EN] COMPOUNDS AND METHODS FOR PREPARING METHANESULFONAMIDES<br/>[FR] COMPOSES ET PROCEDES D'ELABORATION DE METHANESULFONAMIDES
申请人:UPJOHN CO
公开号:WO2002098845A1
公开(公告)日:2002-12-12
A process for preparing (S)-(-)-N-[4-[4-[ethyl(6-fluoro-6-methylheptyl)amino]-1-hydroxy]phenyl]methanesulfonamide hemifumarate salt, which comprises reacting N-[4[(2S)-tetrahydro-5-hydroxy-2-furanyl]phenyl]methanesulfonamide (IIa) with fluoroamine (III) in the presence of triacetoxyborohydride and ethyl acetate to provide [4-[-4-[ethyl(6-fluoro-6-methylheptyl)amino]-1-hydroxy]phenyl]methanesulfonamide (I) and then converting I into the hemifumarate salt Ia. A process for preparing IIa is also claimed as well as intermediates IIa-IId.
Chemistry Development of a Convergent Route to Trecetilide Hemi-Fumarate
作者:Sonja S. Mackey、Haifeng Wu、Michael E. Matison、Michael Goble
DOI:10.1021/op049799f
日期:2005.3.1
A novel, efficient, stereoselective synthetic route for N-(4-4-[ethyl(6-fluoro -6-methylheptyl)amino]-1-(S)-hyd roxybutyl}-phenyl)methanesulfonamide hemi-fumaric acid salt (trecetilide hemi-fumarate, Figure 1) has been developed. The process features a convergent approach, which assembles two key intermediates in the last step to form the final molecule, which is then isolated by pH-controlled extraction. The new route offers significant yield and purity advantages over the previous route. However, the solvent volume and cycle time were not fully optimized due to the termination of the project.