PROCESS FOR RESOLVING RACEMIC MIXTURES OF PIPERIDINE DERIVATIVES
申请人:ELI LILLY AND COMPANY
公开号:EP1341762A1
公开(公告)日:2003-09-10
US6664271B1
申请人:——
公开号:US6664271B1
公开(公告)日:2003-12-16
[EN] PROCESS FOR RESOLVING RACEMIC MIXTURES OF PIPERIDINE DERIVATIVES<br/>[FR] PROCEDE DE DISSOLUTION DE MELANGES RACEMIQUES DE DERIVES DE PIPERIDINE
申请人:LILLY CO ELI
公开号:WO2002068391A1
公开(公告)日:2002-09-06
A process for resolving a racemic mixture into its (R) and (S) enantiomers. The racemic mixture is reacted with a resolving agent selected from the group consisting of di-benzoyl-L-tartaric acid, di-benzoyl-D-tartaric acid, (S)-mandelic acid and (R)-mandelic acid in a solvent. The reaction is carried out under conditions sufficient to form soluble diastereomeric salts comprising the (R) enantiomer and the resolving agent, and the (S) enantiomer and the resolving agent, respectively. One of the diastereomeric salts is then isolated from the mixture. The free base of the isolated salt may then be generated in situ, and directly reacted with other compounds to synthesize useful chiral compounds.
Immunopotentiator agents
申请人:Eli Lilly and Company
公开号:US06664271B1
公开(公告)日:2003-12-16
Novel compounds and methods for preparing same, immunopotentiating compositions, and a method for potentiating the immune system of a host animal. The method comprises administering to the animal an effective amount of an immunopotentiating compound of Formula I or Formula II, or a physiologically acceptable salt.
Process for resolving racemic mixtures of piperidine derivatives
申请人:——
公开号:US20040039206A1
公开(公告)日:2004-02-26
A process for resolving a racemic mixture into its (R) and (S) enantiomers. The racemic mixture is reacted with a resolving agent selected from the group consisting of di-benzoyl-L-tartaric acid, di-benzoyl-D-tartaric acid, (S)-mandelic acid and (R)-mandelic acid in a solvent. The reaction is carried out under conditions sufficient to form soluble diastereomeric salts comprising the (R) enantiomer and the resolving agent, and the (S) enantiomer and the resolving agent, respectively. One of the diastereomeric salts is then isolated from the mixture. The free base of the isolated salt may then be generated in situ, and directly reacted with other compounds to synthesize useful chiral compounds.