156143-00-9Relevant academic research and scientific papers
Enantioselective Synthesis of Chiral Carboxylic Acids from Alkynes and Formic Acid by Nickel-Catalyzed Cascade Reactions: Facile Synthesis of Profens
Fu, Kaiyue,Ma, Yu,Sun, Yaxin,Tang, Bo,Yang, Guang,Yang, Peng,Yue, Jieyu,Zhang, Li,Zhou, Jianrong Steve
supporting information, (2021/11/22)
We report a stereoselective conversion of terminal alkynes to α-chiral carboxylic acids using a nickel-catalyzed domino hydrocarboxylation-transfer hydrogenation reaction. A simple nickel/BenzP* catalyst displayed high activity in both steps of regioselective hydrocarboxylation of alkynes and subsequent asymmetric transfer hydrogenation. The reaction was successfully applied in enantioselective preparation of three nonsteroidal anti-inflammatory profens (>90 % ees) and the chiral fragment of AZD2716.
Palladium-Catalyzed Asymmetric Markovnikov Hydroxycarbonylation and Hydroalkoxycarbonylation of Vinyl Arenes: Synthesis of 2-Arylpropanoic Acids
Guan, Zheng-Hui,Ren, Zhi-Hui,Wang, Yuan,Yang, Hui-Yi,Yao, Ya-Hong,Zou, Xian-Jin
supporting information, p. 23117 - 23122 (2021/09/18)
Asymmetric hydroxycarbonylation is one of the most fundamental yet challenging methods for the synthesis of carboxylic acids. Herein, we reported the development of a palladium-catalyzed highly enantioselective Markovnikov hydroxycarbonylation of vinyl arenes with CO and water. A monodentate phosphoramidite ligand L6 plays vital role in the reaction. The reaction tolerates a range of functional groups, and provides a facile and atom-economical approach to an array of 2-arylpropanoic acids including several commonly used non-steroidal anti-inflammatory drugs. The catalytic system has also enabled an asymmetric Markovnikov hydroalkoxycarbonylation of vinyl arenes with alcohols to afford 2-arylpropanates. Mechanistic investigations suggested that the hydropalladation is irreversible and is the regio- and enantiodetermining step, while hydrolysis/alcoholysis is probably the rate-limiting step.
SUBSTITUTED 5-CYCLOPROPYL-1H-PYRAZOL-3-YL-AMINE DERIVATIVES AS SELECTIVE CDK12/13 INHIBITORS
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, (2020/10/20)
The present invention provides 5-cyclopropyl-1H-pyrazol-3-yl-amine derivatives of formula (I), which are therapeutically useful as selective CDK12/13 inhibitors. These compounds are useful in the treatment and/or prevention of diseases and/or disorders as
Biocatalytic Parallel Interconnected Dynamic Asymmetric Disproportionation of α-Substituted Aldehydes: Atom-Efficient Access to Enantiopure (S)-Profens and Profenols
Tassano, Erika,Faber, Kurt,Hall, Mélanie
, p. 2742 - 2751 (2018/07/29)
The biocatalytic asymmetric disproportionation of aldehydes catalyzed by horse liver alcohol dehydrogenase (HLADH) was assessed in detail on a series of racemic 2-arylpropanals. Statistical optimization by means of design of experiments (DoE) allowed the identification of critical interdependencies between several reaction parameters and revealed a specific experimental window for reaching an ′optimal compromise′ in the reaction outcome. The biocatalytic system could be applied to a variety of 2-arylpropanals and granted access in a redox-neutral manner to enantioenriched (S)-profens and profenols following a parallel interconnected dynamic asymmetric transformation (PIDAT). The reaction can be performed in aqueous buffer at ambient conditions, does not rely on a sacrificial co-substrate, and requires only catalytic amounts of cofactor and a single enzyme. The high atom-efficiency was exemplified by the conversion of 75 mM of rac-2-phenylpropanal with 0.03 mol% of HLADH in the presence of ~0.013 eq. of oxidized nicotinamide adenine dinucleotide (NAD+), yielding 28.1 mM of (S)-2-phenylpropanol in 96% ee and 26.5 mM of (S)-2-phenylpropionic acid in 89% ee, in 73% overall conversion. Isolated yield of 62% was obtained on 100 mg-scale, with intact enantiopurities. (Figure presented.).
Atropisomer Control in Macrocyclic Factor VIIa Inhibitors
Glunz, Peter W.,Mueller, Luciano,Cheney, Daniel L.,Ladziata, Vladimir,Zou, Yan,Wurtz, Nicholas R.,Wei, Anzhi,Wong, Pancras C.,Wexler, Ruth R.,Priestley, E. Scott
, p. 4007 - 4018 (2016/05/19)
Incorporation of a methyl group onto a macrocyclic FVIIa inhibitor improves potency 10-fold but is accompanied by atropisomerism due to restricted bond rotation in the macrocyclic structure, as demonstrated by NMR studies. We designed a conformational constraint favoring the desired atropisomer in which this methyl group interacts with the S2 pocket of FVIIa. A macrocyclic inhibitor incorporating this constraint was prepared and demonstrated by NMR to reside predominantly in the desired conformation. This modification improved potency 180-fold relative to the unsubstituted, racemic macrocycle and improved selectivity. An X-ray crystal structure of a closely related analogue in the FVIIa active site was obtained and matches the NMR and modeled conformations, confirming that this conformational constraint does indeed direct the methyl group into the S2 pocket as designed. The resulting rationally designed, conformationally stable template enables further optimization of these macrocyclic inhibitors.
Catalytic enantioselective protoboration of disubstituted allenes. Access to alkenylboron compounds in high enantiomeric purity
Jang, Hwanjong,Jung, Byunghyuck,Hoveyda, Amir H.
supporting information, p. 4658 - 4661 (2015/02/19)
Proto-boryl additions to 1,1-disubstituted allenes in the presence of 1.0-5.0 mol % of chiral NHC-Cu complexes, B2(pin)2, and t-BuOH proceed to afford alkenyl-B(pin) products in up to 98% yield, >98:2 site selectivity, and 98:2 er. T
The discovery of MK-0674, an orally bioavailable cathepsin K inhibitor
Isabel, Elise,Bateman, Kevin P.,Chauret, Nathalie,Cromlish, Wanda,Desmarais, Sylvie,Duong, Le T.,Falgueyret, Jean-Pierre,Gauthier, Jacques Yves,Lamontagne, Sonia,Lau, Cheuk K.,Leger, Serge,LeRiche, Tammy,Levesque, Jean-Francois,Li, Chun Sing,Masse, Frederic,McKay, Daniel J.,Mellon, Christophe,Nicoll-Griffith, Deborah A.,Oballa, Renata M.,Percival, M. David,Riendeau, Denis,Robichaud, Joel,Rodan, Gideon A.,Rodan, Sevgi B.,Seto, Carmai,Therien, Michel,Truong, Vouy Linh,Wesolowski, Gregg,Young, Robert N.,Zamboni, Robert,Black, W. Cameron
scheme or table, p. 887 - 892 (2010/08/22)
MK-0674 is a potent and selective cathepsin K inhibitor from the same structural class as odanacatib with a comparable inhibitory potency profile against Cat K. It is orally bioavailable and exhibits long half-life in pre-clinical species. In vivo studies
CATHEPSIN CYSTEINE PROTEASE INHIBITORS
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Page/Page column 72, (2010/02/11)
This invention relates to a novel class of compounds, represented by the formula below, wherein the meanings of G, E, E, n, R1, R2, R3 et R4 are indicated therein, which are cysteine protease inhibitors, including but not limited to, inhibitors of cathepsins K, L, S and B. These compounds are useful for treating diseases in which inhibition of bone resorption is indicated, such as osteoporosis.
Enantioselective hydrolysis of various racemic α-substituted arylacetonitriles using Rhodococcus sp. CGMCC 0497
Wu, Zhong-Liu,Li, Zu-Yi
, p. 3305 - 3312 (2007/10/03)
The enantioselective hydrolysis of 17 racemic α-substituted arylacetonitriles by Rhodococcus sp. CGMCC 0497 is described. The corresponding (R)-amides and (S)-acids were obtained with excellent enantiomeric excess in most cases. The effect of steric and electronic factors on the outcome of the reactions are discussed here. The results prove that nitrile-converting enzymes are efficient tools for the synthesis of sterically unencumbered chiral α-arylpropionic acids and amides.
