Ethionamide Boosters. 2. Combining Bioisosteric Replacement and Structure-Based Drug Design To Solve Pharmacokinetic Issues in a Series of Potent 1,2,4-Oxadiazole EthR Inhibitors
摘要:
Mycobacterial transcriptional repressor EthR controls the expression of EthA, the bacterial monooxygenase activating ethionamide, and is thus largely responsible for the low sensitivity of the human pathogen Mycobacterium tuberculosis to this antibiotic. We recently reported structure-activity relationships of a series of 1,2,4-oxadiazole EthR inhibitors leading to the discovery of potent ethionamide boosters. Despite high metabolic stability, pharmacokinetic evaluation revealed poor mice exposure; therefore, a second phase of optimization was required. Herein a structure-property relationship study is reported according to the replacement of the two aromatic heterocycles: 2-thienyl and 1,2,4-oxadiazolyl moieties. This work was done using a combination of structure-based drug design and in vitro/ex vivo evaluations of ethionamide boosters on the targeted protein EthR and on the human pathogen Mycobacterium tuberculosis. Thanks to this process, we identified compound 42 (BDM41906), which displays improved efficacy in addition to high exposure to mice after oral administration.
[EN] 2-SULFONYLAMINO-4-HETEROARYL BUTYRAMIDE ANTAGONISTS OF CCR10<br/>[FR] ANTAGONISTES DE 2-SULFONYLAMINO-4-HÉTÉROARYL BUTYRAMIDE DE CCR10
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2009126675A1
公开(公告)日:2009-10-15
This invention relates to a compound of formula (I) and the pharmaceutically acceptable salts thereof wherein R1, R2, R4. Ar and Het are as defined herein. The invention also relates to methods of using the compound of formula (I) to treat a diseases and disorders that are mediated or sustained through the activity of CCR10.
[EN] FUSED IMIDAZOLES FOR CANCER TREATMENT<br/>[FR] IMIDAZOLES FUSIONNÉS POUR LE TRAITEMENT DU CANCER
申请人:BAYER SCHERING PHARMA AG
公开号:WO2009021990A1
公开(公告)日:2009-02-19
Compounds of Formula (I), a tautomer or stereoisomer thereof, or a salt thereof,wherein ring B and the imidazole to which it is fused, R4, R6 and R7 have the meanings as given in the description and the claims, are effective inhibi tors of the Pi3K/Akt pathway.
Compounds of formula (I)
a tautomer or stereoisomer thereof, or a salt thereof, wherein ring B and the imidazole to which it is fused, R4, R6 and R7 have the meanings as given in the description and the claims, are effective inhibitors of the Pi3K/Akt pathway.
Electrochemical Aminoxyl-Mediated α-Cyanation of Secondary Piperidines for Pharmaceutical Building Block Diversification
作者:Alastair J. J. Lennox、Shannon L. Goes、Matthew P. Webster、Hannes F. Koolman、Stevan W. Djuric、Shannon S. Stahl
DOI:10.1021/jacs.8b08145
日期:2018.9.12
Secondary piperidines are ideal pharmaceutical building blocks owing to the prevalence of piperidines in commercial drugs. Here, we report an electrochemical method for cyanation of the heterocycle adjacent to nitrogen without requiring protection or substitution of the N-H bond. The reaction utilizes ABNO (9-azabicyclononane N-oxyl) as a catalytic mediator. Electrochemical oxidation of ABNO generates
2-SULFONYLAMINO-4-HETEROARYL BUTYRAMIDE ANTAGONISTS OF CCR10
申请人:Abeywardane Asitha
公开号:US20110275800A1
公开(公告)日:2011-11-10
This invention relates to a compound of formula (I) and the pharmaceutically acceptable salts thereof wherein R
1
, R
2
, R
4
. Ar and Het are as defined herein. The invention also relates to methods of using the compound of formula (I) to treat a diseases and disorders that are mediated or sustained through the activity of CCR
10
.