Tetrahydrochromenoimidazoles as Potassium-Competitive Acid Blockers (P-CABs): Structure−Activity Relationship of Their Antisecretory Properties and Their Affinity toward the hERG Channel
作者:Andreas M. Palmer、Vittoria Chiesa、Anja Schmid、Gabriela Münch、Burkhard Grobbel、Peter J. Zimmermann、Christof Brehm、Wilm Buhr、Wolfgang-Alexander Simon、Wolfgang Kromer、Stefan Postius、Jürgen Volz、Dietmar Hess
DOI:10.1021/jm100040c
日期:2010.5.13
Potassium-competitiveacidblockers (P-CABs) constitute a new therapeutic option for the treatment of acid-related diseases that are widespread and constitute a significant economical burden. Enantiomerically pure tetrahydrochromenoimidazoles were prepared using the readily available candidate 4 (BYK 405879) as starting material or the Noyori asymmetric reduction of ketones as key reaction. A comprehensive
钾竞争性酸阻滞剂(P-CAB)构成了治疗与酸有关的疾病的新的治疗选择,这些疾病与疾病相关的疾病广泛且构成重大的经济负担。使用容易获得的候选物4制备对映体纯的四氢色氮咪唑(BYK 405879)作为起始原料或Noyori酮的不对称还原是关键反应。建立了关于5-羧酰胺和8-芳基残基对体外活性,Ghosh Schild大鼠体内酸抑制和对hERG通道的亲和力影响的综合SAR。此外,通过瘘管犬的24 h pH测量,检查了最有希望的目标化合物的抗分泌作用的功效和持续时间,与Ghosh Schild大鼠相比,观察到了明显不同的SAR。鉴定了几种与候选物4具有可比性的四氢色氮咪唑。
Asymmetric Hydrogenation of Unfunctionalized Enamines Catalyzed by Iridium Complexes of Chiral Spiro N,N-Diarylphosphoramidites
作者:Pucha Yan、Jianhua Xie、Qilin Zhou
DOI:10.1002/cjoc.201090293
日期:2010.9
Chiral spiro N,N‐diarylphosphoramidites were synthesized. These new chiral spiro monophosphoramidites were efficient ligands for iridium‐catalyzedasymmetrichydrogenation of unfunctionalized enamines derived from simple alkyl aryl ketones, providing chiral tertiary amines in good enantioselectivities (up to 90% ee).
The invention relates to a compound of formula (I):
1
wherein
A represents pyridine, pyridinium or piperidine
R
1
, R
2
, R
3
and R
4
are as defined in the description
R
5
represents hydrogen, a nitrogen-containing heterocycle or a group of formula (II):
2
R
6
represents hydrogen or linear or branched (C
1
-C
6
)alkyl.
and medicinal products containing the same which are useful in treating pain or deficiencies in memory.
The invention relates to a compound of formula (I):
1
wherein:
A represents pyridine, pyridinium or piperidine
R
1
, R
2
, R
3
and R
4
are as defined in the description
R
5
represents hydrogen, a nitrogen-containing heterocycle or a group of formula (II):
2
R
6
represents hydrogen or linear or branched (C
1
-C
6
)alkyl.
and medicinal products containing the same which are useful in treating pain or deficiencies in memory.