- Shuttle arylation by Rh(I) catalyzed reversible carbon–carbon bond activation of unstrained alcohols
-
The advent of transfer hydrogenation and borrowing hydrogen reactions paved the way to manipulate simple alcohols in previously unthinkable manners and circumvented the need for hydrogen gas. Analogously, transfer hydrocarbylation could greatly increase the versatility of tertiary alcohols. However, this reaction remains unexplored because of the challenges associated with the catalytic cleavage of unactivated C–C bonds. Herein, we report a rhodium(I)-catalyzed shuttle arylation cleaving the C(sp2)–C(sp3) bond in unstrained triaryl alcohols via a redox-neutral β-carbon elimination mechanism. A selective transfer hydrocarbylation of substituted (hetero)aryl groups from tertiary alcohols to ketones was realized, employing benign alcohols as latent C-nucleophiles. All preliminary mechanistic experiments support a reversible β-carbon elimination/migratory insertion mechanism. In a broader context, this novel reactivity offers a new platform for the manipulation of tertiary alcohols in catalysis.
- Lutz, Marius D.R.,Gasser, Valentina C.M.,Morandi, Bill
-
supporting information
p. 1108 - 1119
(2021/04/19)
-
- Application of Transaminases in a Disperse System for the Bioamination of Hydrophobic Substrates
-
The challenging bioamination of hydrophobic substrates has been attained through the employment of a disperse system consisting of a combination of a low polarity solvent (e. g. isooctane or methyl-tert-butylether), a non-ionic surfactant and a minimal amount of water. In these conditions, amine transaminases (ATA) were shown to efficiently carry out the reductive amination of variously substituted cyclohexanones, providing good conversions often coupled with a superior stereoselectivity if compared with the corresponding chemical reductive amination. An array of synthetically useful 4-substituted aminocyclohexanes was consequentially synthesized through biocatalysis, analyzed and stereochemically characterized. (Figure presented.).
- Berglund, Per,Fiorati, Andrea,Humble, Maria S.,Tessaro, Davide
-
-
- NHC-coordinated palladacycle catalyzed 1,2-addition of arylboronates to unactivated ketones
-
Palladium catalyzed intermolecular 1,2-addition of arylboronate to unactivated ketone was investigated. NHC-coordinated palladacycle 4c exhibited catalytic activity for the reactions and provided the corresponding tertiary alcohols and γ,γ-disubstituted γ-lactones in good to excellent yields.
- Akiyama, Ryo,Sugaya, Mariko,Shinozaki, Hiraku,Yamamoto, Tetsuya
-
p. 1193 - 1201
(2019/05/06)
-
- Visible Light Mediated Generation of trans-Arylcyclohexenes and Their Utilization in the Synthesis of Cyclic Bridged Ethers
-
While accessible via UV-irradiation of cis-cyclohexene, trans-cyclohexene has thus far been an investigation driven by curiosity, and due primarily to its short lifespan, has until recently not been employed for productive synthesis. Herein, we present st
- Day, Jon I.,Singh, Kamaljeet,Trinh, Winston,Weaver, Jimmie D.
-
supporting information
p. 9934 - 9941
(2018/07/25)
-
- Optimization of TRPV6 calcium channel inhibitors using a 3D ligand-based virtual screening method
-
Herein, we report the discovery of the first potent and selective inhibitor of TRPV6, a calcium channel overexpressed in breast and prostate cancer, and its use to test the effect of blocking TRPV6-mediated Ca2+-influx on cell growth. The inhib
- Simonin, Céline,Awale, Mahendra,Brand, Michael,Van Deursen, Ruud,Schwartz, Julian,Fine, Michael,Kovacs, Gergely,H?fliger, Pascal,Gyimesi, Gergely,Sithampari, Abilashan,Charles, Roch-Philippe,Hediger, Matthias A.,Reymond, Jean-Louis
-
supporting information
p. 14748 - 14752
(2016/02/05)
-
- Catalytic asymmetric hydrogenation of α-arylcyclohexanones and total synthesis of (-)-α-lycorane
-
An efficient catalytic asymmetric hydrogenation of racemic α-arylcyclohexanones with an ethylene ketal group at the 5-position of the cyclohexane ring via dynamic kinetic resolution has been developed, giving chiral α-arylcyclohexanols with two contiguous
- Li, Gang,Xie, Jian-Hua,Hou, Jing,Zhu, Shou-Fei,Zhou, Qi-Lin
-
supporting information
p. 1597 - 1604
(2013/07/05)
-
- A METHOD OF TREATING LIVER FIBROSIS
-
The present invention relates to a method of treating hepatis C and/or liver fibroisis with 3-cycloalkylaminopyrrolidine derivatives of the present invention
- -
-
Page/Page column 37
(2012/09/11)
-
- Aryl extensions of thienopyrimidinones as fibroblast growth factor receptor 1 kinase inhibitors
-
Optimization of thienopyrimidinone derivatives as FGFR1 kinase inhibitors is being pursued. The present results confirm predictions of computational modeling that an aryl substituent can be introduced at the 2-position in structure 3. The substituent is anticipated to project deeper into the binding site and provide opportunities for enhanced activity and selectivity. The most potent analog reported herein, 13, has a 4-hydroxyphenyl substituent and yields an IC50 of 6 μM for inhibition of phosphorylation by FGFR1 kinase. It was also found that the western anisole-containing substituent in 3 can be replaced by a propionic acid group with no loss in potency and with potentially significant gains in pharmacologically relevant properties.
- Ekkati, Anil R.,Mandiyan, Valsan,Ravindranathan, Krishna P.,Bae, Jae H.,Schlessinger, Joseph,Jorgensen, William L.
-
scheme or table
p. 2228 - 2231
(2011/05/05)
-
- Discovery of INCB3344, a potent, selective and orally bioavailable antagonist of human and murine CCR2
-
Rational design based on a pharmacophore of CCR2 antagonists reported in the literature identified lead compound 9a with potent inhibitory activity against human CCR2 (hCCR2) but moderate activity against murine CCR2 (mCCR2). Modification on 9a led to the
- Xue, Chu-Biao,Wang, Anlai,Meloni, David,Zhang, Ke,Kong, Ling,Feng, Hao,Glenn, Joseph,Huang, Taisheng,Zhang, Yingxin,Cao, Ganfeng,Anand, Rajan,Zheng, Changsheng,Xia, Michael,Han, Qi,Robinson,Storace, Lou,Shao, Lixin,Li, Mei,Brodmerkel, Carrie M.,Covington, Maryanne,Scherle, Peggy,Diamond, Sharon,Yeleswaram, Swamy,Vaddi, Kris,Newton, Robert,Hollis, Greg,Friedman, Steven,Metcalf, Brian
-
scheme or table
p. 7473 - 7478
(2011/01/12)
-
- 4-AZETIDINYL-1-PHENYL-CYCLOHEXANE ANTAGONISTS OF CCR2
-
The present invention comprises compounds of Formula (I): wherein: X, R1, R2, R3, and R4 are as defined in the specification. The invention also comprises a method of preventing, treating or ameliorating a syndrome, disorder or disease, wherein said syndrome, disorder or disease is type II diabetes, obesity and asthma. The invention also comprises a method of inhibiting CCR2 activity in a mammal by administration of a therapeutically effective amount of at least one compound of Formula (I).
- -
-
Page/Page column 64
(2010/11/03)
-
- UREA COMPOUNDS AS GAMMA SECRETASE MODULATORS
-
The present invention provides compounds Formula (I) that are gamma secretase modulators and are therefore useful for the treatment of diseases treatable by modulation of gamma secretase such as Alzheimer's disease. Also provided are pharmaceutical compositions containing such compounds and processes for preparing such compounds.
- -
-
Page/Page column 87-88
(2010/01/29)
-
- 2-(Bicyclo)alkylamino-derivatives as mediatores of chronic pain and inflammation
-
Compounds disclosed herein are bradykinin B1 antagonist compounds useful in the treatment or prevention of symptoms such as pain and inflammation associated with the bradykinin B1 pathway.
- -
-
Page/Page column 14; 23
(2008/06/13)
-
- 3-Cycloalkylaminopyrrolidine derivatives as modulators of chemokine receptors
-
The present invention relates to 3-cycloalkylaminopyrrolidine derivatives of the formula I: (wherein R1, R2, R3, R4, R5, R6, R7, X, Y and Z are as defined herein) which are useful as modulators of chemokine receptor activity. In particular, these compounds are useful as modulators of chemokine receptors and more specifically as modulators of the CCR2 and/or CCR5 receptor. The compounds and compositions of the invention may bind to chemokine receptors, e.g., the CCR2 and/or CCR5 chemokine receptors, and are useful for treating diseases associated with chemokine, e.g., CCR2 and/or CCR5, activity, such as atherosclerosis, restenosis, lupus, organ transplant rejection and rheumatoid arthritis.
- -
-
Page/Page column 22
(2008/06/13)
-
- Development of a presynaptic 5-HT1A antagonist.
-
A new 5-HT(1A) silent antagonist 14 (5-HT(1A) IC(50)=2.2 nM) antagonizes the effects of agonists on reciprocal forepaw treading behavior, on neuronal firing in the rat dorsal raphe, and on 5-HT(1A) release in the raphe and hippocampus. While 14 alone was inactive in the social interaction paradigm, it completely reversed the social interaction activity of the serotonergic compounds (buspirone, 1, and 2).
- Mattson, Ronald J,Catt, John D,Sloan, Charles P,Gao,Carter, Richard B,Gentile, Anthony,Mahle, Cathy D,Matos, F Fatima,McGovern, Rachel,VanderMaelen, Cam P,Yocca, Frank D
-
p. 285 - 288
(2007/10/03)
-
- Extended chains of six-membered rings. I. Model studies and key intermediates
-
McMurry coupling of 4-phenylcyclohex-3-en-1-one and double addition of 1,4-dilithiobenzene and 4,4'-dilithiobiphenyl to cyclohexanones gives linear chains of three or four six-membered carbocyclic rings, including a potential intermediate in a proposed sy
- Cory,Walker,Zabel
-
p. 799 - 807
(2007/10/02)
-