213024-76-1Relevant articles and documents
New flurbiprofen derivatives: Synthesis, membrane affinity and evaluation of in vitro effect on β-amyloid levels
Sozio, Piera,Marinelli, Lisa,Cacciatore, Ivana,Fontana, Antonella,Tuerkez, Hasan,Giorgioni, Gianfabio,Ambrosini, Dario,Barbato, Francesco,Grumetto, Lucia,Pacella, Stephanie,Cataldi, Amelia,Di Stefano, Antonio
, p. 10747 - 10767 (2013/10/22)
Alzheimer′s disease (AD) is characterized by irreversible and progressive loss of memory and cognition and profound neuronal loss. Current therapeutic strategies for the treatment of AD have been directed to a variety of targets with the aim of reversing or preventing the disease but, unfortunately, the available treatments often produce no significant clinical benefits. During the last decades compounds that inhibit or modulate γ-secretase, reducing β amyloid (Aβ) levels, have been considered as potential therapeutics for AD. Among these the (R)-enantiomer of flurbiprofen (FLU) seems to be very promising, but it shows low brain penetration. In this study, in order to improve the properties of FLU against Alzheimer′s pathogenesis we synthesized some novel FLU lipophilic analogues. Lipophilicity of the new molecules has been characterized in terms of clogP, log KC18/W and log K IAM/W values. Permeability has been determined in both gastrointestinal PAMPA (PAMPA-GI) at different pH values and in brain blood barrier PAMPA (PAMPA-BBB) models. They were also tested for their ability to inhibit in vitro γ-secretase activity using rat CTXTNA2 astrocytes. Interestingly, the investigated molecules demonstrated to reduce Aβ 42 levels without affecting the amyloid precursor protein APP level in a clear concentrations-dependent manner.
Synthesis of dibenzazepinones by palladium-catalyzed intramolecular arylation of o -(2′-Bromophenyl)anilide enolates
Pan, Xiaohong,Wilcox, Craig S.
experimental part, p. 6445 - 6451 (2010/12/20)
A new approach for the convenient synthesis of dibenzazepinones is reported. The key step is the formation of the seven-membered ring through palladium-catalyzed intramolecular arylation of an anilide enolate. T'e reactions were completed in 10 min at 100 °C with moderate to excellent yields. Aminodibenzazepinone 1, the core structure in the γ-secretase inhibitor LY411575, can be prepared in five steps from 2-bromophenylboronic acid and 2-iodoaniline in 60% overall yield. The synthesis reported here compares favorably with presently available approaches to this interesting ring system.
Synthesis and axial chirality of an enantiopure aminodibenzazepinone
Cole, Kevin P.,Mitchell, David,Austin Carr,Stout, James R.,Belvo, Matthew D.
scheme or table, p. 1262 - 1266 (2009/12/01)
A route for the synthesis of (S,S)-7-amino-5-methyl-5H-dibenzo[b,d]azepin-6(7H)-one hydrochloride is disclosed. The synthesis includes a Friedel-Crafts alkylation to form the seven-membered ring and a highly efficient classical resolution. Additional stud
A multigram chemical synthesis of the γ-secretase inhibitor LY411575 and its diastereoisomers
Fauq, Abdul H.,Simpson, Katherine,Maharvi, Ghulam M.,Golde, Todd,Das, Pritam
, p. 6392 - 6395 (2008/09/16)
An improved chemical synthesis of N-2((2S)-2-(3,5-difluorophenyl)-2-hydroxyethanoyl)-N1-((7S)-5-methyl-6-oxo-6,7-dihydro-5H-dibenzo[b,d]azepin-7-yl)-l-alaninamide (LY411,575, 9a), a known γ-secretase inhibitor, is described. The key synthetic steps, which
Highly efficient synthesis of medium-sized lactams via intramolecular Staudinger-aza-Wittig reaction of ω-azido pentafluorophenyl ester: Synthesis and biological evaluation of LY411575 analogues
Fuwa, Haruhiko,Okamura, Yumiko,Morohashi, Yuichi,Tomita, Taisuke,Iwatsubo, Takeshi,Kan, Toshiyuki,Fukuyama, Tohru,Natsugari, Hideaki
, p. 2323 - 2326 (2007/10/03)
A highly efficient method for the synthesis of medium-sized lactams based on intramolecular Staudinger-aza-Wittig reaction of ω-azido pentafluorophenyl ester has been developed. A variety of 7-10 membered lactams were synthesized in excellent yields. Appl
Substituted lactams as inhibitors of A beta protein production
-
, (2008/06/13)
This invention relates to novel lactams of Formula (I): having drug and bio-affecting properties, their pharmaceutical compositions and methods of use. These novel compounds inhibit the processing of amyloid precursor protein and, more specifically, inhibit the production of Aβ-peptide, thereby acting to prevent the formation of neurological deposits of amyloid protein. More particularly, the present invention relates to the treatment of neurological disorders related to β-amyloid production such as Alzheimer's disease and Down's Syndrome.