Aza-Belluš-Claisen Rearrangement-Enabled Synthesis of Racemic Tapentadol and Its Stereoisomers
作者:Donghu Bai、Sha-Hua Huang、Zuming Lin、Lin Yang、Junzeng Dai、Meng-Yuan Huang、Xueshun Jia、Ran Hong
DOI:10.1002/cjoc.201300081
日期:2013.3
A concise synthesis of racemicTapentadol and itsstereoisomers was presented. The key step was a TiCl4·THF2‐catalzyed aza‐Belluš‐Claisen rearrangement to create two vicinal tertiary carbon stereogenic centers. The subsequent reduction of amide and hydrogenation of alkene delivered Tapentadol and itsstereoisomers. The current approach offers a practical synthetic route to access this class of pharmaceutically
Salts or Co-Crystals of 3-(3-dimethylamino-1-ethyl-2-methyl-propyl)-phenol
申请人:GRUSS Michael
公开号:US20120022117A1
公开(公告)日:2012-01-26
A salt or cocrystal of 3-(3-dimethylamino-1-ethyl-2-methyl-propyl)-phenol (component a) and at least one acid component (b1) or at least one acid component (b2), wherein the salt or cocrystal of component (a) and component (b2) is present in crystalline and/or amorphous form, a pharmaceutical composition comprising said salt or cocrystal, and a method of treating pain in a subject in need thereof by administering an effective amount of said salt or cocrystal.
[EN] SALTS OR CO-CRYSTALS OF 3-(3-DIMETHYLAMINO-1-ETHYL-2-METHYL-PROPYL)-PHENOL<br/>[FR] SELS OU CO-CRISTAUX DE 3-(3-DIMETHYLAMINO-1-ETHYL-2-METHYL-PROPYL)- PHÉNOL
申请人:GRUENENTHAL GMBH
公开号:WO2012010316A1
公开(公告)日:2012-01-26
The invention relates to a salt or cocrystal of 3-(3-dimethylamino-1-ethyl-2-methyl-propyl)- phenol (component a) and at least one acid component (b1 ) or at least one acid component (b2), wherein the salt or cocrystal of component (a) and component (b2) is present in crystalline and/or amorphous form, a medicament comprising said salt or cocrystal as well as said salt or cocrystal for use in the treatment of pain.
[EN] PROCESS FOR THE PREPARATION OF SUBSTITUTED 3-(1-AMINO-2-METHYLPENTANE-3-YL)PHENYL COMPOUNDS<br/>[FR] PROCÉDÉ DE PRÉPARATION DE COMPOSÉS 3-(1-AMINO-2-METHYLPENTANE-3-YL)PHÉNYLE SUBSTITUÉ
申请人:GRUENENTHAL GMBH
公开号:WO2011157390A2
公开(公告)日:2011-12-22
The present invention relates to a process for the preparation of substituted 3-(1-amino-2-methylpentane-3-yl)phenyl compounds.