[EN] SUBSTITUTED SULFONAMIDE DERIVATIVES<br/>[FR] DÉRIVÉS DE SULFONAMIDES SUBSTITUÉS
申请人:GRUENENTHAL GMBH
公开号:WO2009090055A1
公开(公告)日:2009-07-23
The invention relates to substituted sulfonamide derivatives of the general formula (I'); processes for their preparation, medicaments containing these compounds, and the use of substituted sulfonamide derivatives for the preparation of medicaments
Process for the preparation of optically active piperazine-2-carboxylic
申请人:Lonza AG
公开号:US05945534A1
公开(公告)日:1999-08-31
Optically active piperazine-2-carboxylic acid derivatives of the general formula: ##STR1## in which X is alkoxy or a (substituted) amino group, are prepared by asymmetric hydrogenation of the corresponding pyrazinecarboxylic acid derivatives, catalyzed by optically active rhodium complexes. The compounds of the formula I are intermediates for the preparation of pharmaceutical active substances, for example, HIV protease inhibitors.
Compounds of formula I or pharmaceutically acceptable salts thereof:
wherein R
1
, R
2
, R
3
, R
4
, and R
5
and are as defined in the specification as well as salts and pharmaceutical compositions including the compounds are prepared. They are useful in therapy, in particular in the management of pain.