Comparative inhibition of tetrameric carbonyl reductase activity in pig heart cytosol by alkyl 4-pyridyl ketones
摘要:
Context and objective: The present study is to elucidate the comparative inhibition of tetrameric carbonyl reductase (TCBR) activity by alkyl 4-pyridyl ketones, and to characterize its substrate-binding domain.Materials and methods: The inhibitory effects of alkyl 4-pyridyl ketones on the stereoselective reduction of 4-benzoylpyridine (4-BP) catalyzed by TCBR were examined in the cytosolic fraction of pig heart.Results: Of alkyl 4-pyridyl ketones, 4-hexanoylpyridine, which has a straight-chain alkyl group of five carbon atoms, inhibited most potently TCBR activity and was a competitive inhibitor. Furthermore, cyclohexyl pentyl ketone, which is substituted by cyclohexyl group instead of phenyl group of hexanophenone, had much lower ability to be reduced than hexanophenone.Discussion and conclusion: These results suggest that in addition to a hydrophobic cleft corresponding to a straight-chain alkyl group of five carbon atoms, a hydrophobic pocket with affinity for an aromatic group is located in the substrate-binding domain of TCBR.
Biotransformation of Phenyl- and Pyridylalkane Derivatives in Rat Liver 9,000xg Supernatant (S-9)
摘要:
When phenylpropanes were incubated with phenobarbital-pretreated rat liver 9,000xg supernatant (S-9), oxidative hydroxylation occurred to give phenylpropanol (racemic), (1R, 2S)- and (1R, 2R)-phenylpropanediols, (2S)-hydroxyphenylpropanone. Incubation of pyridylethane and propane with S-9 afforded alpha-pyridylethanol and propanol, but those were optically inactive. During the incubation of 1-phenylpropanone, an asymmetric redox reaction simultaneously occurred to give (2S)-phenylpropanol, (1R, 2S)- or (1R, 2R)-phenylpropanediols and (2R)- hydroxyphenylpropanone. Acetylpyridines were enantioselectively reduced to afford alpha-pyridylethanols in high optical yields (94-98%ee). The oxidation of pyridylalkane was significantly inhibited by cytochrome P-450 inhibitor (SKF-525A), but reduction of acetylpyridines was not inhibited. Thus, cytochrome P-450 was found to be responsible for the oxidation of pyridylalkane, but not for the reduction of the ketone.
Chiral 2-(2-hydroxyaryl)alcohols (HAROLs) with a 1,4-diol scaffold as a new family of ligands and organocatalysts
作者:Ömer Dilek、Mustafa A. Tezeren、Tahir Tilki、Erkan Ertürk
DOI:10.1016/j.tet.2017.11.054
日期:2018.1
Efficient and modular syntheses of chiral 2-(2-hydroxyaryl)alcohols (HAROLs), novel 1,4-diols carrying one phenolic and one alcohol hydroxyl group, have been developed which led to generation of a small library of structurally diverse HAROLs in enantiomerically pure form. Of the different HAROLs examined, a HAROL based on the indan backbone exhibited the highest activity and enantioselectivity in the
高效和模块化的手性2-(2-羟基芳基)醇(HAROLs)的合成,带有一个酚和一个醇羟基的新型1,4-二醇已被开发出来,这导致在对映异构体中生成结构多样的HAROLS小文库纯形式。在考察的不同HAROL中,基于茚满骨架的HAROL在Ti(O i Pr)4(y高达97%, 88%ee)并在三田膦的促进下在Morita-Baylis-Hillman反应中作为氢键供体有机催化剂发挥作用。
[EN] NEW COMPOUNDS AND USES THEREOF FOR DETECTION OF TARGET MOLECULES IN A SAMPLE<br/>[FR] NOUVEAUX COMPOSÉS ET LEURS UTILISATIONS POUR LA DÉTECTION DE MOLÉCULES CIBLES DANS UN ÉCHANTILLON
申请人:UNIV GENEVE
公开号:WO2018069470A1
公开(公告)日:2018-04-19
The present invention relates to new profluorophores and conjugates thereof and their use for the detection of target molecule in a sample, in particular nucleic acid target molecules. The invention relates to new profluorophores and new fluorophores and methods of use thereof particularly useful in the fields of diagnostics and quality control.
Disclosed are methods of treating certain cytokine mediated diseases or conditions using novel aromatic heterocyclic compounds of the formula(I) wherein Ar
1
,Ar
2
,L,Q and X are described herein.
1
This invention provides compounds of formula I having the structure
wherein G1, G2, R1, R4, Z, n, and X are defined in the specification or a pharmaceutically acceptable salt thereof which are useful as antineoplastic agents and in the treatment of polycystic kidney disease.
[EN] PIPERIDINONE DERIVATIVES AS MDM2 INHIBITORS FOR THE TREATMENT OF CANCER<br/>[FR] DÉRIVÉS DE LA PIPÉRIDINONE EN TANT QU'INHIBITEURS DE MDM2 POUR LE TRAITEMENT DU CANCER
申请人:AMGEN INC
公开号:WO2011153509A1
公开(公告)日:2011-12-08
The present invention provides MDM2 inhibitor compounds of Formula (I), wherein the variables are defined above, which compounds are useful as therapeutic agents, particularly for the treatment of cancers. The present invention also relates to pharmaceutical compositions that contain an MDM2 inhibitor.