31729-66-5Relevant academic research and scientific papers
Deglycase-activity oriented screening to identify DJ-1 inhibitors
David, Yael,Finkin-Groner, Efrat,Fukase, Yoshiyuki,Huggins, David J.,Maksimovic, Igor,Michino, Mayako,Myers, Robert W.,Sun, Shan,Zheng, Qingfei
supporting information, p. 1232 - 1238 (2021/09/28)
The oncoprotein and Parkinson's disease-associated enzyme DJ-1/PARK7 has emerged as a promiscuous deglycase that can remove methylglyoxal-induced glycation adducts from both proteins and nucleotides. However, dissecting its structural and enzymatic functions remains a challenge due to the lack of potent, specific, and pharmacokinetically stable inhibitors targeting its catalytic site (including Cys106). To evaluate potential drug-like leads against DJ-1, we leveraged its deglycase activity in an enzyme-coupled, fluorescence lactate-detection assay based on the recent understanding of its deglycation mechanism. In addition, we developed assays to directly evaluate DJ-1's esterase activity using both colorimetric and fluorescent substrates. The resulting optimized assay was used to evaluate a library of potential reversible and irreversible DJ-1 inhibitors. The deglycase activity-oriented screening strategy described herein establishes a new platform for the discovery of potential anti-cancer drugs.
Directed RhI-Catalyzed Asymmetric Hydroboration of Prochiral 1-Arylcycloprop-2-Ene-1-Carboxylic Acid Derivatives
Edwards, Andrew,Rubina, Marina,Rubin, Michael
supporting information, p. 1394 - 1403 (2017/12/26)
A full account on rhodium-catalyzed asymmetric, directed hydroboration of functionalized prochiral cyclopropenes affording enantiomerically enriched cyclopropylboronates is reported. The scope and limitations of two alternate directing groups, ester and carboxamide, are evaluated. It was found that hydroboration of esters appeared to be more sensitive to substitution in the aromatic ring of the substrates. Specifically, ortho-halogens were detrimental for diastereo- and enantioselectivity, possibly because of additional coordination with rhodium. In contrast, more Lewis-basic amide directing groups allowed for stronger chelation to the transition metal, leading to consistently high diastereo- and enantioselectivity in hydroboration across a broader range of substrates.
Electrophilic Bromolactonization of Cyclopropyl Diesters Using Lewis Basic Chalcogenide Catalysts
Gieuw, Matthew H.,Leung, Vincent Ming-Yau,Ke, Zhihai,Yeung, Ying-Yeung
supporting information, p. 4306 - 4311 (2018/10/02)
An efficient and regioselective electrophilic bromolactonization of cyclopropylmethyl diesters using triphenylphosphine sulfide (Ph3PS) or diphenyl selenide (Ph2Se) as the Lewis basic chalcogenide catalyst has been developed. It was observed that Ph3PS favored the formation of anti-diastereomer and yielded the multi-functional γ-lactones. Interestingly, the diastereoselectivity was reversed when using Ph2Se as a catalyst where the syn-product instead of the anti-product was favored. (Figure presented.).
Ruthenium-Catalyzed Deaminative Hydrogenation of Aliphatic and Aromatic Nitriles to Primary Alcohols
Molnár, István Gábor,Calleja, Pilar,Ernst, Martin,Hashmi, A. Stephen K.,Schaub, Thomas
, p. 4175 - 4178 (2017/10/09)
The deaminative hydrogenation of nitriles towards alcohols is a useful reaction to transform nitriles into alcohols with NH3 as the sole byproduct. Using the simple and robust RuHCl(CO)(PPh3)3 complex as a catalyst, at low H2 pressures a series of aliphatic and aromatic nitriles could be transformed into the corresponding alcohols. Suitable solvent systems for these reactions were 1,4-dioxane/water and EtOH/water mixtures. In most cases, the selectivity for the alcohols was excellent, and the corresponding amines were formed only in trace amounts.
Olefin-Migrative Cleavage of Cyclopropane Rings through the Nickel-Catalyzed Hydrocyanation of Allenes and Alkenes
Hori, Hiroto,Arai, Shigeru,Nishida, Atsushi
supporting information, p. 1170 - 1176 (2017/04/13)
A nickel-catalyzed hydrocyanation triggered by hydronickelation of the carbon-carbon double bonds of allenes followed by cyclopropane cleavage is described. The observed regio- and stereochemistries in the products are strongly influenced by the initial hydronickelation step, and allenyl- and methylenecyclopropanes reacted smoothly to promote the cleavage of cyclopropane. In contrast, this cleavage was not observed with vinylidenecyclopropanes, because the initial hydronickelation does not give a suitable intermediate for cleavage of the cyclopropanes. (Figure presented.).
Design of Potent and Druglike Nonphenolic Inhibitors for Catechol O-Methyltransferase Derived from a Fragment Screening Approach Targeting the S-Adenosyl- l -methionine Pocket
Lerner, Christian,Jakob-Roetne, Roland,Buettelmann, Bernd,Ehler, Andreas,Rudolph, Markus,Sarmiento, Rosa María Rodríguez
, p. 10163 - 10175 (2016/12/07)
A fragment screening approach designed to target specifically the S-adenosyl-l-methionine pocket of catechol O-methyl transferase allowed the identification of structurally related fragments of high ligand efficiency and with activity on the described orthogonal assays. By use of a reliable enzymatic assay together with X-ray crystallography as guidance, a series of fragment modifications revealed an SAR and, after several expansions, potent lead compounds could be obtained. For the first time nonphenolic and small low nanomolar potent, SAM competitive COMT inhibitors are reported. These compounds represent a novel series of potent COMT inhibitors that might be further optimized to new drugs useful for the treatment of Parkinson's disease, as adjuncts in levodopa based therapy, or for the treatment of schizophrenia.
INHIBITORS OF HEPATITIS C VIRUS POLYMERASE
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Page/Page column 145-146, (2012/06/30)
The present invention provides, among other things, compounds represented by the general Formula (I) and pharmaceutically acceptable salts thereof, wherein X, Y, R1A, R1B, R2, and R3 are as defined in classes and subclasses herein and compositions (e.g., pharmaceutical compositions) comprising such compounds, which compounds are useful as inhibitors of hepatitis C virus polymerase, and thus are useful, for example, as medicaments for the treatment of HCV infection.
An improved bouveault-blanc ester reduction with stabilized alkali metals
Bodnar, Brian S.,Vogt, Paul F.
supporting information; experimental part, p. 2598 - 2600 (2009/08/07)
Significantly improved Bouveault-Blanc conditions for ester reduction have been developed using sodium in silica gel (Na-SG), a free-flowing powder that can be easily handled in the open atmosphere. Primary alcohols were prepared in excellent yield from a variety of aliphatic esters under mild reaction conditions. The chemistry presented here is far safer than the classic Bouveault-Blanc reduction and is competitive with more modern hydride reduction methods.
Survivin inhibitors
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Page/Page column 19, (2010/11/26)
Compounds that inhibit survivin, compositions containing the compounds and methods of treating diseases in which survivin is unregulated or overexpressed are disclosed.
Reduction of Cyclopropanecarboxylic Acids by Borane, a Chemoselective Reaction Sensitive to Steric Interactions and Reaction Conditions
Sydnes, Leiv K.,Pereira, Paula F. F.,Sandberg, Marcel,Oevreboe, Hans H.
, p. 464 - 474 (2007/10/03)
A number of cyclopropanecarboxylic acids have been reduced by borane in tetrahydrofuran to the corresponding cyclopropyl alcohols. The yield was sensitive to the steric influence of the substituents attached to the ring, the reaction temperature, and the
