Asymmetric Hydrogenation of α,β-Unsaturated Carboxylic Acids Catalyzed by Ruthenium(II) Complexes of Spirobifluorene Diphosphine (SFDP) Ligands
作者:Xu Cheng、Jian-Hua Xie、Sheng Li、Qi-Lin Zhou
DOI:10.1002/adsc.200606065
日期:2006.7
The ruthenium diacetate complexes ligated by chiral spirobifluorene diphosphines (SFDP) were very effective catalysts for the asymmetric hydrogenation of tiglic acid derivatives and α-methylcinnamic acid derivatives with high activities and excellent enantioselectivities (up to 98 % ee). The α-aryloxybutenoic acids can also be hydrogenated by these catalysts to provide the corresponding saturated α-aryloxybutanoic
The present invention provides LPA analogs that are antagonists at the LPA receptors.
[DE] MAKROCYCLISCHE HARNSTOFF- UND SULFAMIDDERIVATE ALS INHIBITOREN VON TAFIA<br/>[EN] MACROCYCLIC UREA AND SULFAMIDE DERIVATIVES AS INHIBITORS OF TAFIA<br/>[FR] DÉRIVÉS MACROCYCLIQUES D'URÉE ET DE SULFAMIDE COMME INHIBITEURS DE TAFIA
申请人:SANOFI AVENTIS
公开号:WO2009146802A1
公开(公告)日:2009-12-10
Die Erfindung betrifft Verbindungen der Formel (I), die Inhibitoren von aktivierter Thrombin-aktivierbarer Fibrinolyse Inhibitor sind. Die Verbindungen der Formel (I) eignen sich zur Herstellung von Arzneimitteln zur Prophylaxe, Sekundärprevention und Therapie von einer oder mehrerer Erkrankungen, die mit Thrombosen, Embolien, Hyperkoagulabilität oder fibrotischen Veränderungen einhergehen.
[EN] PROTEASOME CHYMOTRYPSIN-LIKE INHIBITION USING PI-1833 ANALOGS<br/>[FR] INHIBITION DE CHYMOTRYPSINE-LIKE DU PROTÉASOME À L'AIDE D'ANALOGUES DE PI-1833
申请人:H LEE MOFFITT CANCER CT & RES
公开号:WO2012129564A2
公开(公告)日:2012-09-27
Focused library synthesis and medicinal chemistry on an oxadiazole-isopropylamide core proteasome inhibitor provided the lead compound that strongly inhibits CT-L activity. Structure activity relationship studies indicate the amide moiety and two phenyl rings are sensitive toward synthetic modifications. Only para-substitution in the A-ring was important to maintain potent CT-L inhibitory activity. Hydrophobic residues in the A-ring's para-position and meta-pyridyl group at the B-ring significantly improved inhibition. The meta-pyridyl moiety improved cell permeability. The length of the aliphatic chain at the para position of the A-ring is critical with propyl yielding the most potent inhibitor, whereas shorter (i.e. ethyl, methyl or hydrogen) or longer (i.e. butyl, propyl and hexyl) chains demonstrating progressively less potency. Introduction of a stereogenic center next to the ether moiety (i.e. substitution of one of the hydrogens by methyl) demonstrated chiral discrimination in proteasome CT-L activity inhibition (the S-enantiomer was 35-40 fold more potent than the R-enantiomer).