95314-60-6

Upstream product

• 141-97-9 ethyl acetoacetate 
• 589-15-1 1-bromomethyl-4-bromobenzene 
• 6186-89-6 ethyl methyl malonate 

Downstream Products

• 95314-48-0 C₁₉H₁₇BrN₃O₉^(1-)*C₆H₁₅N*H⁽¹⁺⁾ 
• 1334319-70-8 ethyl 3-(4-bromophenyl)-2-diazopropanoate 
• 1390645-07-4 3-(4-bromobenzyl)-7-hydroxy-4-methylcoumarin 
• 95314-47-9 C₁₉H₁₈BrN₃O₉ 
• 1091602-34-4 C₁₇H₁₈BrN₃O₄S 

Relevant academic research and scientific papers

Development of coumarine derivatives as potent anti-filovirus entry inhibitors targeting viral glycoprotein

Filoviruses, including Ebolavirus (EBOV), Marburgvirus (MARV) and Cuevavirus, cause hemorrhagic fevers in humans with up to 90% mortality rates. In the 2014–2016 West Africa Ebola epidemic, there are 15,261 laboratory confirmed cases and 11,325 total deaths. The lack of effective vaccines and medicines for the prevention and treatment of filovirus infection in humans stresses the urgency to develop antiviral therapeutics against filovirus-associated diseases. Our previous study identified a histamine receptor antagonist compound CP19 as an entry inhibitor against both EBOV and MARV. The preliminary structure-activity relationship (SAR) studies of CP19 showed that its piperidine, coumarin and linker were related with its antiviral activities. In this study, we performed detailed SAR studies on these groups with synthesized CP19 derivatives. We discovered that 1) the piperidine group could be optimized with heterocycles, 2) the substitution groups of C3 and C4 of coumarin should be relatively large hydrophobic groups and 3) the linker part should be least substituted. Based on the SAR analysis, we synthesized compound 32 as a potent entry inhibitor of EBOV and MARV (IC50 = 0.5 μM for EBOV and 1.5 μM for MARV). The mutation studies of Ebola glycoprotein and molecular docking studies showed that the coumarin and its substituted groups of compound 32 bind to the pocket of Ebola glycoprotein in a similar way to the published entry inhibitor compound 118a. However, the carboxamide group of compound 32 does not have strong interaction with N61 as compound 118a does. The coumarin skeleton structure and the binding model of compound 32 elucidated by this study could be utilized to guide further design and optimization of entry inhibitors targeting the filovirus glycoproteins.

Biocatalytic dynamic kinetic reductive resolution with ketoreductase from: Klebsiella pneumoniae: The asymmetric synthesis of functionalized tetrahydropyrans

Ketoreductase from growing cells of Klebsiella pneumoniae (NBRC 3319) acts as an efficient reagent for converting racemic α-benzyl/cinnamyl substituted-β-ketoesters to the corresponding β-hydroxy esters with excellent yields and stereoselectivities (ee and de >99 %). The reactions described herein followed a biocatalytic dynamic kinetic reductive resolution (DKRR) pathway, which is reported for the first time with such substrates. It was found that the enzyme system can accept substituted mono-aryl rings with different electronic natures. In addition, it also accepts a substituted naphthyl ring and heteroaryl ring in the α-position of the parent β-ketoester. The synthesized enantiopure β-hydroxy esters were then synthetically manipulated to valuable tetrahydropyran building blocks.

α-Arylation of Carbonyl Compounds through Oxidative C?C Bond Activation

A synthetically useful approach for the direct α-arylation of carbonyl compounds through a novel oxidative C?C bond activation is reported. This mechanistically unusual process relies on a 1,2-aryl shift and results in all-carbon quaternary centers. The transformation displays broad functional-group tolerance and can in principle also be applied as an asymmetric variant.

Tunable Aerobic Oxidative Hydroxylation/Dehydrogenative Homocoupling of Pyrazol-5-ones under Transition-Metal-Free Conditions

A practical and tunable transition-metal-free aerobic oxidation of pyrazol-5-ones preparing either 4-hydroxypyrazoles (via C-H hydroxylation) or bispyrazoles (via dehydrogenative homocoupling) is described. The K2CO3/dioxane reagent system predominately promoted hydroxylation to deliver the α-hydroxylated pyrazoles. In contrast, the formation of bispyrazoles was overwhelmingly preferred with CH3CN as the reaction medium without any additives.

Copper-Mediated Deuterotrifluoromethylation of α?Diazo Esters

A copper-mediated deuterotrifluoromethylation of α?diazo esters under the promotion of deuterium oxide (D2O) has been developed for the synthesis of deuterium-labeled trifluoromethyl compounds. This deuterotrifluoromethylation reaction is of broad scope and can afford the deuterated products with higher than 99% isotopic purity. Moreover, the results of this investigation also provide some experimental evidences to support our previously proposed trifluoromethylation mechanism.

Alkynylation of heterocyclic compounds using hypervalent iodine reagent

The alkynylation of various nitrogen- and/or sulphur-containing heterocyclic compounds using hypervalent iodine TMS-EBX by utilization of tertiary amines under mild conditions is described. The developed metal-free methodology furnishes the corresponding alkynylated heterocycles bearing quaternary carbon in high yields.

Copper-mediated trifluoromethylation of α-diazo esters with TMSCF3: The important role of water as a promoter

Copper-mediated trifluoromethylation of α-diazo esters with TMSCF3 reagent has been developed as a new method to prepare α-trifluoromethyl esters. This trifluoromethylation reaction represents the first example of fluoroalkylation of a non-fluorinated carbene precursor. Water plays an important role in promoting the reaction by activating the "CuCF3" species prepared from CuI/TMSCF3/CsF (1.0:1.1:1.1). The scope of this trifluoromethylation reaction is broad, and its efficiency is demonstrated in the synthesis of a variety of aryl-, benzyl-, and alkyl-substituted 3,3,3-trifluoropropanoates.

4H- [1, 2, 4] TRIAZOLO [5, 1 -B] PYRIMIDIN-7 -ONE DERIVATIVES AS CCR2B RECEPTOR ANTAGONISTS

The present invention relates to novel compounds for use in the compositions, to processes for their preparation, to intermediates useful in their preparation and to their use as therapeutic agents. The present invention also relates to pharmaceutical com

Carbonic anhydrase inhibitors: Synthesis and inhibition studies against mammalian isoforms I-XV with a series of 2-(hydrazinocarbonyl)-3-substituted-phenyl-1H-indole-5-sulfonamides

A series of 2-(hydrazinocarbonyl)-3-substitutedphenyl-1H-indole-5-sulfonamides possessing various 2-, 3- or 4- substituted phenyl groups with methyl-, halogeno- and methoxy- functionalities, as well as the perfluorophenyl moiety have been synthesized and

2-OXO-2H-CHROMENE COMPOUNDS

Compounds of structural formula (1) modulate CRTH2 activity and are of utility in, for example, respiratory diseases formula (1): in which: A represents a direct bond, an optionally substituted alkylene or alkenylene group, or a group of formula Z-(optionally substituted)alkylene; B represents a direct bond, an optionally substituted alkylene or alkenylene group, or a group of formula Z-(optionally substituted)alkylene or (optionally substituted)alkylene-Z; Z represents an oxygen atom, an NH or N-alkyl group, or a group of formula S(O)n, in which n = 0 to 2; X represents a carboxylic acid, tetrazole, 3-hydroxyisoxazole, hydroxamic acid, phosphinate, phosphonate, phosphonamide, sulfonic acid or a group of formula C(=O)NHSO2W or SO2NHC(=O)W; W represents an optionally substituted aryl or heteroaryl group or an optionally substituted alkyl or cycloalkyl group; Y represents an optionally substituted phenyl or 5- or 6-membered heteroaryl group, Ra, Rb, and Rc independently represent hydrogen, acyl, alkoxy, alkoxycarbonyl, alkylamino, alkylsulfinyl, alkylsulfonyl, alkylthio, -NH2, aminoalkyl, hydroxyalkyl, alkoxyalkyl, arylalkyl, cyano, dialkylamino, halo, haloalkoxy, haloalkyl, alkyl, alkenyl, -OH, optionally substituted aryl, optionally substituted heteroaryl, heterocycloalkyl, aminoacyl, aminosulfonyl, acylamino, sulfonylamino, heteroarylalkyl, cyclic amino, aryloxy, heteroaryloxy, arylalkyloxy or heteroarylalkyloxy.