3940-84-9Relevant academic research and scientific papers
N-Benzylbenzamides: A new class of potent tyrosinase inhibitors
Cho, Sung Jin,Roh, Jung Seop,Sun, Won Suck,Kim, Sung Han,Park, Ki Duk
, p. 2682 - 2684 (2006)
A series of potent inhibitors of tyrosinase and their structure-activity relationships are described. N-Benzylbenzamide derivatives (1-21) with hydroxyl(s) were synthesized and tested for their tyrosinase inhibitory activity. With this series, compound 15 provided a potent tyrosinase inhibition: it effectively inhibited the oxidation of l-DOPA catalyzed by mushroom tyrosinase with an IC50 of 2.2 μM.
Nickel-Catalyzed Phosphine Free Direct N-Alkylation of Amides with Alcohols
Das, Jagadish,Banerjee, Debasis
, p. 3378 - 3384 (2018/03/26)
Herein, we developed an operational simple, practical, and selective Ni-catalyzed synthesis of secondary amides. Application of renewable alcohols, earth-abundant and nonprecious nickel catalyst facilitates the transformations, releasing water as byproduct. The catalytic system is tolerant to a variety of functional groups including nitrile, allylic ether, and alkene and could be extended to the synthesis of bis-amide, antiemetic drug Tigan, and dopamine D2 receptor antagonist Itopride. Preliminary mechanistic studies revealed the participation of a benzylic C-H bond in the rate-determining step.
N-Heterocyclic Carbene-Mediated Microfluidic Oxidative Electrosynthesis of Amides from Aldehydes
Green, Robert A.,Pletcher, Derek,Leach, Stuart G.,Brown, Richard C. D.
supporting information, p. 1198 - 1201 (2016/03/15)
A flow process for N-Heterocyclic Carbene (NHC)-mediated anodic oxidative amidation of aldehydes is described, employing an undivided microfluidic electrolysis cell to oxidize Breslow intermediates. After electrochemical oxidation, the reaction of the intermediate N-acylated thiazolium cation with primary amines is completed by passage through a heating cell to achieve high conversion in a single pass. The flow mixing regimen circumvented the issue of competing imine formation between the aldehyde and amine substrates, which otherwise prevented formation of the desired product. High yields (71-99%), productivities (up to 2.6 g h-1), and current efficiencies (65-91%) were realized for 19 amides.
In situ protection and deprotection of amines for iron catalyzed oxidative amidation of aldehydes
Bathini, Thulasiram,Rawat, Vikas S.,Bojja, Sreedhar
supporting information, p. 5656 - 5660 (2015/09/15)
An environmentally friendly synthetic route by the application of CO2 to synthesize amides via in situ protection and deprotection of amines for iron catalyzed oxidative amidation of aldehydes was developed. Various secondary and tertiary amides have been synthesized in moderate to good yields under mild and neutral reaction conditions. The use of amine hydrochloride salts and hence base for neutralization step is totally avoided in this protocol.
Radical-Induced Metal and Solvent-Free Cross-Coupling Using TBAI-TBHP: Oxidative Amidation of Aldehydes and Alcohols with N-Chloramines via C-H Activation
Achar, Tapas Kumar,Mal, Prasenjit
, p. 666 - 672 (2015/08/19)
A solvent-free cross-coupling method for oxidative amidation of aldehydes and alcohols via a metal-free radial pathway has been demonstrated. The proposed methodology uses the TBAI-TBHP combination which efficiently induces metal-free C-H activation of aldehydes under neat conditions at 50 °C or ball-milling conditions at room temperature.
New synthesis of 3-(β-D-glucopyranosyl)-5-substituted-1,2,4-triazoles, nanomolar inhibitors of glycogen phosphorylase
Kun, Sándor,Bokor, éva,Varga, Gergely,Szocs, Béla,Páhi, András,Czifrák, Katalin,Tóth, Marietta,Juhász, László,Docsa, Tibor,Gergely, Pál,Somsák, László
, p. 567 - 579 (2014/04/03)
O-Perbenzoylated 5-(β-D-glucopyranosyl)tetrazole was reacted with N-benzyl carboximidoyl chlorides to give the corresponding 4-benzyl-3-(β-D- glucopyranosyl)-5-substituted-1,2,4-triazoles. Removal of the O-benzoyl and N-benzyl protecting groups by base catalysed transesterification and catalytic hydrogenation, respectively, furnished a series of 3-(β-D-glucopyranosyl)- 5-substituted-1,2,4-triazoles with aliphatic, mono- and bicyclic aromatic, and heterocyclic substituents in the 5-position. Enzyme kinetic studies revealed these compounds to inhibit rabbit muscle glycogen phosphorylase b: best inhibitors were the 5-(4-aminophenyl)- (Ki 0.67 μM) and the 5-(2-naphthyl)-substituted (Ki 0.41 μM) derivatives. This study uncovered the C-glucopyranosyl-1,2,4-triazoles as a novel skeleton for nanomolar inhibition of glycogen phosphorylase.
Magnetic CuFe2O4nanoparticles: A retrievable catalyst for oxidative amidation of aldehydes with amine hydrochloride salts
Suresh Kumar,Thulasiram,Bala Laxmi,Rawat, Vikas S.,Sreedhar
supporting information, p. 6059 - 6067 (2014/12/10)
The application of magnetic CuFe2O4nanoparticles for the oxidative amidation of aldehydes with amine hydrochloride salts is described. A wide range of amides have been synthesized in good to excellent yields under mild conditions. Chiral amide also synthesized from its corresponding chiral amine salt with retention of the stereochemistry. In particular, the performance of the magnetic separation of the catalyst was very efficient and an alternative to time, solvent and energy-consuming separation procedures. The catalytic activity of the catalyst remains unaltered after five consecutive cycles, making it environmentally benign and widely applicable due to its efficiency, ease of handling and cost effectiveness.
Magnetic CuFe2O4 nanoparticles: A retrievable catalyst for oxidative amidation of aldehydes with amine hydrochloride salts
Suresh Kumar,Thulasiram,Bala Laxmi,Rawat, Vikas S.,Sreedhar
supporting information, p. 6059 - 6067 (2015/03/30)
The application of magnetic CuFe2O4 nanoparticles for the oxidative amidation of aldehydes with amine hydrochloride salts is described. A wide range of amides have been synthesized in good to excellent yields under mild conditions. Chiral amide also synthesized from its corresponding chiral amine salt with retention of the stereochemistry. In particular, the performance of the magnetic separation of the catalyst was very efficient and an alternative to time, solvent and energy-consuming separation procedures. The catalytic activity of the catalyst remains unaltered after five consecutive cycles, making it environmentally benign and widely applicable due to its efficiency, ease of handling and cost effectiveness.
GLYCOGEN PHOSPHORYLASE INHIBITORS
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Page/Page column 24, (2013/05/21)
The invention relates to compounds of formula (I) and stereoisomers, tautomers and pharmaceutically acceptable salts thereof and processes for preparing them. In formula (I) X is -CH= or -N= or -N(R") -; Y is -N= or -N(R") -; R is an alkyl group, an aryl group or a heteroaryl group, which groups are unsubstituted or substituted; R' is hydrogen or PG1, R" is hydrogen or PG2, R"' is hydrogen or R'OCH2-; n is an integer of 1 to 3. The invention also relates to pharmaceutical compositions containing these compounds. The compounds according to the invention are glycogen phosphorylase inhibitors and can be used e.g. for the treatment of type 2 diabetes, cardiovascular disorders and tumorous growth.˙
Novel compounds and their use in therapy
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Page/Page column 23, (2008/06/13)
Thiophenepyrimidinone compounds and their use in therapy, especially for use in the treatment and/or prevention of a steroid hormone dependent diseases or disorders, such as steroid hormone dependent diseases or disorders requiring inhibition of 17β-hydroxysteroid dehydrogenase enzymes.
