124082-06-0Relevant academic research and scientific papers
Development of a Nucleotide Exchange Inhibitor That Impairs Ras Oncogenic Signaling
Marín-Ramos, Nagore I.,Pi?ar, Carmen,Vázquez-Villa, Henar,Martín-Fontecha, Mar,González, ángel,Canales, ángeles,Algar, Sergio,Mayo, Paloma P.,Jiménez-Barbero, Jesús,Gajate, Consuelo,Mollinedo, Faustino,Pardo, Leonardo,Ortega-Gutiérrez, Silvia,Viso, Alma,López-Rodríguez, María L.
supporting information, p. 1676 - 1685 (2017/02/10)
Despite more than three decades of intense effort, no anti-Ras therapies have reached clinical application. Contributing to this failure has been an underestimation of Ras complexity and a dearth of structural information. In this regard, recent studies have revealed the highly dynamic character of the Ras surface and the existence of transient pockets suitable for small-molecule binding, opening up new possibilities for the development of Ras modulators. Herein, a novel Ras inhibitor (compound 12) is described that selectively impairs mutated Ras activity in a reversible manner without significantly affecting wild-type Ras, reduces the Ras–guanosine triphosphate (GTP) levels, inhibits the activation of the mitogen-activated protein kinase (MAPK) pathway, and exhibits remarkable cytotoxic activity in Ras-driven cellular models. The use of molecular dynamics simulations and NMR spectroscopy experiments has enabled the molecular bases responsible for the interactions between compound 12 and Ras protein to be explored. The new Ras inhibitor binds partially to the GTP-binding region and extends into the adjacent hydrophobic pocket delimited by switch II. Hence, Ras inhibitor 12 could represent a new compound for the development of more efficacious drugs to target Ras-driven cancers; a currently unmet clinical need.
SYNTHESIS OF 6-ARYL-4-HYDROXYPIPERIDIN-2-ONES AND A POSSIBLE APPLICATION TO THE SYNTHESIS OF A NOVEL HMG-CoA REDUCTASE INHIBITOR
Ashton, Michael J.,Hills, Susan J.,Newton, Christopher G.,Taylor, John B.,Tondu, Sylvie C. D.
, p. 1015 - 1035 (2007/10/02)
A series of 6-aryl-4-hydroxypiperidin-2-ones (11a-11g) were synthesised with the key step being a Dieckmann cyclisation of the appropriate methyl 3-(ethoxycarbonylacetylamino)-3-(substituted) propionate (8a-8g) and this new synthetic route was successfully applied to the synthesis of 4-hydroxy-6-(2-phenylethyl)piperidin-2-one (11h).The application of this strategy to the synthesis of the putative HMG-CoA reductase inhibitor 6--4-hydroxypiperidin-2-one (11i) was attempted, but failed during the Dieckmann cyclisation of methyl 3-(ethoxycarbonylacetylamino)- 3-propionate (8i).An alternative synthesis of a 1:1 diastereomeric mixture of (11i) was achieved by the reductive cleavage of the isoxazoline (24) with Raney nickel.The mixture of diastereoisomers (11i) was inactive in-vitro and in-vivo (rat) against HMG-CoA reductase
