259209-21-7Relevant articles and documents
Enantiodivergent Atroposelective Synthesis of Chiral Biaryls by Asymmetric Transfer Hydrogenation: Chiral Phosphoric Acid Catalyzed Dynamic Kinetic Resolution
Mori, Keiji,Itakura, Tsubasa,Akiyama, Takahiko
supporting information, p. 11642 - 11646 (2016/10/24)
Reported herein is an enantiodivergent synthesis of chiral biaryls by a chiral phosphoric acid catalyzed asymmetric transfer hydrogenation reaction. Upon treatment of biaryl lactols with aromatic amines and a Hantzsch ester in the presence of chiral phosp
19F NMR study of ligand dynamics in carboxylate-bridged dIIron(II) complexes supported by a macrocyclic ligand
Minier, Mikael A.,Lippard, Stephen J.
, p. 18111 - 18121 (2015/10/28)
A series of asymmetrically carboxylate-bridged diiron(ii) complexes featuring fluorine atoms as NMR spectroscopic probes, [Fe2(PIM)(Ar4F-PhCO2)2] (10), [Fe2(F2PIM)(ArTolCO2
Structural analogues of the natural products magnolol and honokiol as potent allosteric potentiators of GABAA receptors
Fuchs, Alexander,Baur, Roland,Schoeder, Clara,Sigel, Erwin,Müller, Christa E.
supporting information, p. 6908 - 6917 (2015/02/02)
Biphenylic compounds related to the natural products magnolol and 4′-O-methylhonokiol were synthesized, evaluated and optimized as positive allosteric modulators (PAMs) of GABAA receptors. The most efficacious compounds were the magnolol analog 5-ethyl-5′-hexylbiphenyl-2,2′-diol (45) and the honokiol analogs 4′-methoxy-5-propylbiphenyl-2-ol (61), 5-butyl-4′-methoxybiphenyl-2-ol (62) and 5-hexyl-4′-methoxybiphenyl-2-ol (64), which showed a most powerful potentiation of GABA-induced currents (up to 20-fold at a GABA concentration of 3 μM). They were found not to interfere with the allosteric sites occupied by known allosteric modulators, such as benzodiazepines and N-arachidonoylglycerol. These new PAMs will be useful as pharmacological tools and may have therapeutic potential for mono-therapy, or in combination, for example, with GABAA receptor agonists.
Use of 2-bromophenylboronic esters as benzyne precursors in the Pd-catalyzed synthesis of triphenylenes
Garcia-Lopez, Jose-Antonio,Greaney, Michael F.
supporting information, p. 2338 - 2341 (2014/05/20)
ortho-Substituted aryl boronates are introduced as aryne precursors for transition-metal-catalyzed transformations. On treatment with tBuOK and Pd(0), metal-bound aryne intermediates are formed that undergo effective trimerization to form useful triphenylene compounds. For meta-substituted arynes, the 3:1 product ratio in favor of non-C3 symmetric material is indicative of a benzyne mechanism.
Boron-selective biaryl coupling approach to versatile dibenzoxaborins and application to concise synthesis of defucogilvocarcin M
Sumida, Yuto,Harada, Ryu,Kato-Sumida, Tomoe,Johmoto, Kohei,Uekusa, Hidehiro,Hosoya, Takamitsu
supporting information, p. 6240 - 6243 (2015/01/09)
An efficient synthetic method for versatile dibenzoxaborins based on boron-selective Suzuki-Miyaura cross-coupling between o-borylphenols and aryl halides or triflates bearing a 1,8-diaminonaphthalene-protected o-boryl group is reported. A short synthesis
Rh/Pd catalysis with chiral and achiral ligands: Domino synthesis of aza-dihydrodibenzoxepines
Friedman, Adam A.,Panteleev, Jane,Tsoung, Jennifer,Huynh, Vaizanne,Lautens, Mark
supporting information, p. 9755 - 9758 (2013/09/23)
A game of dominoes: A synthetic route to aza-dihydrodibenzoxepines is described, through the combination of a Rh-catalyzed arylation and a Pd-catalyzed C-O coupling in a single pot. For the first time, the ability to incorporate a chiral and an achiral ligand in a two-component, two-metal transformation is achieved, giving the products in moderate to good yields, with excellent enantioselectivities. Copyright
Novel and efficient one-step parallel synthesis of dibenzopyranones via suzuki-miyaura cross coupling
Vishnumurthy, Kodumuru,Makriyannis, Alexandros
experimental part, p. 664 - 669 (2010/11/04)
Microwave-promoted novel and efficient one-step parallel synthesis of dibenzopyranones and heterocyclic analogues from bromo arylcarboxylates and o-hydroxyarylboronic acids via Suzuki-Miyaura cross coupling reaction is described. Spontaneous lactonization
(3-oxo)pyridazin-4-ylurea derivatives as PDE4 inhibitors
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Page/Page column 37; 38, (2010/07/03)
New (3-oxo)pyridazin-4-ylurea derivatives having the chemcial structure of formula (I) are disclosed; as well as process for their preparation, pharmaceutical compositions comprising them and their use in therapy as inhibitors of the phosphodiesterase IV (PDE4).
Bipyridine manganese complexes
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, (2008/06/13)
Compounds and methods of preparing compounds represented by structural formula (I): wherein X represents any suitable counter-anion; R1and R2independently represent hydrogen, C1-6alkoxy or nitro; R3, R4/su