910235-64-2Relevant academic research and scientific papers
Synthesis of Amino- and Hydroxymethyl Benzoxaboroles: Prominent Scaffolds for Further Functionalization
Fuscaldo, Rodrigo S.,Vontobel, Pedro H. V.,Boeira, Eduam O.,Moro, Angélica V.,Costa, Jessie S. da
, p. 2050 - 2055 (2019/03/07)
Herein, we describe the development of a short, simple, and efficient synthesis of amino- and hydroxymethyl-substituted benzoxaboroles. The key step in our strategy was the early stage incorporation of the boron by the borylation of an aniline. The formed boronates were then elaborated to the final products in two additional steps, usually in good yields. The synthetic sequence was amenable to be performed on a preparative scale and 4-amino benzoxaborole 4b and 6-hydroxymethyl benzoxaborole 10c have been prepared, without any significant decrease in the overall yield. The amino and hydroxymethyl present at the molecules are useful for further elaboration and/or conjugation to bioactive molecules and therefore we believe that this method should be useful in the development of new compounds for Medicinal Chemistry.
Synthesis and NMR analysis of a conformationally controlled β-Turn Mimetic Torsion Balance
Lypson, Alyssa B.,Wilcox, Craig S.
, p. 898 - 909 (2017/11/04)
The molecular torsion balance concept was applied to a new conformationally controlled scaffold and synthesized to accurately evaluate pairwise amino acid interactions in an antiparallel β-sheet motif. The scaffold's core design combines (ortho-tolyl)amide and o,o,o′-trisubstituted biphenyl structural units to provide a geometry better-suited for intramolecular hydrogen bonding. Like the dibenzodiazocine hinge of the traditional torsion balance, the (ortho-tolyl)amide unit offers restricted rotation around an N-aryl bond. The resulting two-state folding model is a powerful template for measuring hydrogen bond stability between two competing sequences. The aim of this study was to improve the alignment between the amino acid sequences attached to the upper and lower aromatic rings in order to promote hydrogen bond formation at the correct distance and antiparallel orientation. Bromine substituents were introduced ortho to the upper side chains and compared to a control to test our hypothesis. Hydrogen bond formation has been identified between the NH amide proton of the upper side chain (proton donor) and glycine acetamide of the lower side chain (proton acceptor).
Structure-based drug design of RN486, a potent and selective Bruton's tyrosine kinase (BTK) inhibitor, for the treatment of rheumatoid arthritis
Lou, Yan,Han, Xiaochun,Kuglstatter, Andreas,Kondru, Rama K.,Sweeney, Zachary K.,Soth, Michael,McIntosh, Joel,Litman, Renee,Suh, Judy,Kocer, Buelent,Davis, Dana,Park, Jaehyeon,Frauchiger, Sandra,Dewdney, Nolan,Zecic, Hasim,Taygerly, Joshua P.,Sarma, Keshab,Hong, Junbae,Hill, Ronald J.,Gabriel, Tobias,Goldstein, David M.,Owens, Timothy D.
supporting information, p. 512 - 516 (2015/03/03)
Structure-based drug design was used to guide the optimization of a series of selective BTK inhibitors as potential treatments for Rheumatoid arthritis. Highlights include the introduction of a benzyl alcohol group and a fluorine substitution, each of which resulted in over 10-fold increase in activity. Concurrent optimization of drug-like properties led to compound 1 (RN486) (J. Pharmacol. Exp. Ther. 2012, 341, 90), which was selected for advanced preclinical characterization based on its favorable properties.
Borylation using group IV metallocene under mild conditions
Marciasini, Ludovic D.,Vaultier, Michel,Pucheault, Mathieu
supporting information, p. 1702 - 1705 (2014/03/21)
A borylation reaction of aromatic diazonium salts has been optimized using titanocene and zirconocene derivatives as catalysts. The reaction employs diisopropylaminoborane as a borylating agent and proceeds smoothly at room temperature to provide arylboronates after methanolysis and transesterification with pinacol. The reaction mechanism has been found to proceed via a radical pathway.
New process for preparing arylboranes by arylation of organoboron compounds
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Paragraph 0108; 0109; 0110; 0111; 0133; 0134, (2014/01/23)
The present invention relates to a new process for the preparation of an arylborane compound, by arylation of a B-H bond, which comprises a step (1) of contacting an arenediazonium salt or a heteroarenediazonium salt with an organoboron compound containing at least one B-H bond, in a reaction medium containing a solvent, in the absence of base, in the absence or in the presence of an activating agent, for the preparation of an arylborane compound, and a possible step (2) of recovery and purification of said arylborane compound obtained at the step (1), said arylborane being in particular an aminoarylborane, and a possible step (3) of refunctionalisation of said arylborane obtained at step (1) or (2) for the preparation of aryl boronic derivatives or arylborates.
NEW PROCESS FOR PREPARING ARYLBORANES BY ARYLATION OF ORGANOBORON COMPOUNDS
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Page/Page column 58-59, (2014/02/15)
The present invention relates to a new process for the preparation of an arylborane compound, by arylation of a B-H bond, which comprises a step (1) of contacting an arenediazonium salt or a heteroarenediazonium salt with an organoboron compound containing at least one B-H bond, in a reaction medium containing a solvent, in the absence of base, in the absence or in the presence of an activating agent, for the preparation of an arylborane compound, and a possible step (2) of recovery and purification of said arylborane compound obtained at the step (1), said arylborane being in particular an aminoarylborane, and a possible step (3) of refunctionalisation of said arylborane obtained at step (1) or (2) for the preparation of aryl boronic derivatives or arylborates.
Iron-catalysed borylation of arenediazonium salts to give access to arylboron derivatives via aryl(amino)boranes at room temperature
Marciasini, Ludovic D.,Richy, Nicolas,Vaultier, Michel,Pucheault, Mathieu
supporting information, p. 1083 - 1088 (2013/05/21)
Complementary to previously described Miyaura borylation methods, a new access to boron derivatives via aryl(amino)boranes is described. Direct coupling between aryldiazonium salts and diisopropylaminoborane is catalysed by 0.1% ferrocene leading to the formation of a carbon-boron bond. The obtained aryl(amino)boranes could eventually then be transformed into boronic acids, boronates or borates. Copyright
PYRIDINONES/PYRAZINONES, METHOD OF MAKING, AND METHOD OF USE THEREOF
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Page/Page column 57-58, (2012/03/26)
Pyridone and pyrazinone compounds of Formula (I) including stereoisomers, tautomers, and pharmaceutically acceptable salts thereof, useful for inhibiting Btk kinase, and for treating immune disorders such as inflammation mediated by Btk kinase. Methods of using compounds of Formula I for in vitro, in situ, and in vivo diagnosis, and treatment of such disorders in mammalian cells, or associated pathological conditions, are disclosed.
CERTAIN SUBSTITUTED AMIDES, METHOD OF MAKING, AND METHOD OF USE THEREOF
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Page/Page column 23-24, (2009/04/24)
Compounds of Formula I that inhibit Btk are described herein. Pharmaceutical compositions comprising at least one compound of Formula I, together with at least one pharmaceutically acceptable vehicle chosen from carriers, adjuvants, and excipients, are de
NOVEL IMIDAZO[1,2-A]PYRIDINE AND IMIDAZO[1,2-B]PYRIDAZINE DERIVATIVES
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Page/Page column 86-87, (2009/07/18)
Imidazo[1,2-a]pyridine and imidazo[1,2-b]pyridazine derivatives which inhibit Btk and are useful for the treatment of auto-immune and inflammatory diseases caused by aberrant B-cell activation, e.g. arthritis.
