1,3 disubstituted pyrrolidines as alpha -2- adrenoceptor antagonists
申请人:——
公开号:US20030008874A1
公开(公告)日:2003-01-09
The invention provides compounds of formula (I) wherein R
0
, R
1
, R
2
and A are as defined in the description, and the preparation thereof. The compounds of formula (I) have high affinity as &agr;
2
adrenoceptors and hence are useful as pharmaceuticals.
1,3-DISUBSTITUTED PYRROLIDINES AS ALPHA-2-ADRENOCEPTOR ANTAGONISTS
申请人:Novartis AG
公开号:EP1257547A1
公开(公告)日:2002-11-20
[EN] 1,3-DISUBSTITUTED PYRROLIDINES AS ALPHA-2-ADRENOCEPTOR ANTAGONISTS<br/>[FR] PYRROLIDINES 1,3-DISUBSTITUEES EN TANT QU'ANTAGONISTES DU RECEPTEUR ADRENERGIQUE ALPHA 2
申请人:NOVARTIS AG
公开号:WO2001055132A1
公开(公告)日:2001-08-02
The invention provides compounds of formula (I) wherein R0, R1, R2 and A are as defined in the description, and the preparation thereof. The compounds of formula (I) have high affinity as α2 adrenoceptors and hence are useful as pharmaceuticals.
Chiral Phosphine-Olefin Bidentate Ligands in Asymmetric Catalysis: Rhodium-Catalyzed Asymmetric 1,4-Addition of Aryl Boronic Acids to Maleimides
Preparation of Chiral 3-Arylpyrrolidines via the Enantioselective 1,4-Addition of Arylboronic Acids to Fumaric Esters Catalyzed by Rh(I)/Chiral Diene Complexes
A highly efficient rhodium-catalyzed protocol for the preparation of 2-arylsuccinic esters and 3-arylpyrrolidines of high optical purity has been achieved. In the presence of 1 mol % of a chiral diene/Rh(I) catalyst, asymmetric addition of various arylboronic acids to di-fert-butyl fumarate (3c) provides the corresponding adducts in up to 99% yield and 94 -> 99.5% ee. Excellent enantioselectivities were also observed in the regio- and enantioselective conjugate addition of phenylboronic acid (4a) to compound 3e.