89671-57-8

Upstream product

• 98-86-2 acetophenone 
• 3471-32-7 4-Methoxyphenylhydrazine 
• 19501-58-7 4-methoxyphenylhydrazine hydrochloride 

Downstream Products

• 5883-96-5 5-methoxy-2-phenylindole 
• 263717-57-3 1-(4-methoxyphenyl)-3-phenyl-5-propyl-1H-pyrazole 
• 263717-56-2 5-ethyl-1-(4-methoxyphenyl)-3-phenylpyrazole 
• 1020240-78-1 1-(4'-methoxyphenyl)-3-phenyl-1H-pyrazole-4-carbaldehyde 
• 127841-53-6 2-[3-(4-methoxyphenyl)-1-phenyl-1H-pyrazol-5-yl]benzoic acid 
• 35673-25-7 6-methoxy-2-phenyl-4H-benzo[d][1,3]oxazin-4-one 
• 36640-42-3 3-(4-methoxyphenyl)-1-phenyl-1H-pyrazole-4-carboxaldehyde 
• 1412892-48-8 C₂₁H₂₀N₂O₂S 
• 1412892-70-6 C₂₂H₂₃N₃O₂ 
• 1412892-65-9 (E)-N,N-diethyl-3-(1'-(4''-methoxyphenyl)-3'-phenyl-1'H-pyrazol-4'-yl)acrylamide 
• 263717-66-4 1,4-bis(4-methoxyphenyl)-3-phenyl-5-propyl-1H-pyrazole 
• 263717-65-3 5-ethyl-1,4-bis(4-methoxyphenyl)-3-phenyl-1H-pyrazole 
• 263717-64-2 5-ethyl-1-(4-methoxyphenyl)-3,4-diphenyl-1H-pyrazole 

Relevant academic research and scientific papers

Design and synthesis of novel quinazolinone-pyrazole derivatives as potential α-glucosidase inhibitors: Structure-activity relationship, molecular modeling and kinetic study

In this study, a new series of quinazolinone-pyrazole hybrids were designed, synthesized and screened for their α-glucosidase inhibitory activity. The results of the in vitro screening indicated that all the molecular hybrids exhibited more inhibitory activity (IC50 values ranging from 60.5 ± 0.3 μM-186.6 ± 20 μM) in comparison to standard acarbose (IC50 = 750.0 ± 10.0 μM). Limited structure–activity relationship suggested that the variation in the inhibitory activities of the compounds affected by different substitutions on phenyl rings of diphenyl pyrazole moiety. The enzyme kinetic studies of the most potent compound 9i revealed that it inhibited α-glucosidase in a competitive mode with a Ki of 56 μM. Molecular docking study was performed to predict the putative binding interaction. As expected, all pharmacophoric moieties used in the initial structure design playing a pivotal role in the interaction with the binding site of the enzyme. In addition, by performing molecular dynamic investigation and MM-GBSA calculation, we investigated the difference in structural perturbation and dynamic behavior that is observed over α-glycosidase in complex with the most active compound and acarbose relative to unbound α-glycosidase enzyme.

Acid-catalyzed cleavage of C-C bonds enables atropaldehyde acetals as masked C2 electrophiles for organic synthesis

Acid-catalyzed tandem reactions of atropaldehyde acetals were established for the synthesis of three important molecules, 2,2-disubstituted indolin-3-ones, naphthofurans and stilbenes. The synthesis was realized using novel reaction cascades, which involved the same two initial steps: (i) SN2′ substitution, in which the atropaldehyde acted as an electrophile; and (ii) oxidative cleavage of the carbon-carbon bond of the generated phenylacetaldehyde-type products. Compared with literature methods, the present protocol not only avoided the use of expensive noble metal catalysts, but also enabled a simple operation.

An iron(iii)-catalyzed dehydrogenative cross-coupling reaction of indoles with benzylamines to prepare 3-aminoindole derivatives

We report a green cascade approach to prepare a variety of 3-aminoindole derivatives in good to excellent yields through an iron(iii)-catalyzed dehydrogenative cross-coupling reaction of 2-arylindoles and primary benzylamines under mild reaction conditions. Mechanistic studies show that a cascade reaction involves a tert-butyl nitrite (TBN)-mediated nitrosation of 2-substituted indoles and a 1,5-hydrogen shift to afford indolenine oximes, sequential iron(iii)-catalyzed condensation and a 1,5-hydrogen shift over four steps in a one-pot reaction. The reaction shows a broad substrate scope of indoles and benzylamines and tolerates a wide range of functional groups. Moreover, the reaction is easily performed at the gram scale without producing waste after the reaction is completed. The 3-aminoindole product is purified by simple extraction, washing, and recrystallization without flash column chromatography. A double imine ligand containing the 3-aminoindole unit is facile to obtain in a 52% yield in one step. The present method highlights readily available starting materials, a simple purification procedure, and the usage of cheap, nontoxic, and environmentally benign iron(iii) catalysts. This journal is

Discovery of pyrazole derivatives as cellular active inhibitors of histone lysine specific demethylase 5B (KDM5B/JARID1B)

KDM5B (also known as PLU-1 and JARID1B) is 2-oxoglutarate and Fe2+ dependent oxygenase that acts as a histone H3K4 demethylase, which is a key participant in inhibiting the expression of tumor suppressors as a drug target. Here, we present the discovery of pyrazole derivatives compound 5 by structure-based virtual screening and biochemical screening with IC50 of 9.320 μM against KDM5B, and its subsequent optimization to give 1-(4-methoxyphenyl)-N-(2-methyl-2-morpholinopropyl)-3-phenyl-1H-pyrazole-4-carboxamide (27 ab), a potent KDM5B inhibitor with IC50 of 0.0244 μM. In MKN45 cells, compound 27 ab can bind and stabilize KDM5B and induce the accumulation of H3K4me2/3, bona fide substrates of KDM5B, while keep the amount of H3K4me1, H3K9me2/3 and H3K27me2 without change. Further biological study also indicated that compound 27 ab is a potent cellular active KDM5B inhibitor that can inhibit MKN45 cell proliferation, wound healing and migration. In sum, our finding gives a novel structure for the discovery of KDM5B inhibitor and targeting KDM5B may be a new therapeutic strategy for gastric cancer treatment.

Copper catalyzed cyanomethylation reaction of 4-thiazolidinone

An effective copper catalyzed Cross Dehydrogenative Coupling (CDC) reaction of 4-thiazolidinones with acetonitrile has been developed. The described strategy undergoes radical pathway by employing copper, oxidant and easily available acetonitrile as a cya

Synthesis of 2-Aminobenzonitriles through Nitrosation Reaction and Sequential Iron(III)-Catalyzed C-C Bond Cleavage of 2-Arylindoles

A variety of 2-aminobenzonitriles were prepared from 2-arylindoles in good to excellent yields through tert-butylnitrite (TBN)-mediated nitrosation and sequential iron(III)-catalyzed C-C Bond cleavage in a one-pot fashion. The 2-aminobenzonitriles can be used to rapidly synthesize benzoxazinones by intramolecular condensation. The present method features an inexpensive iron(III) catalyst, gram scalable preparations, and novel C-C bond cleavage of indoles.

Antitubercular Activity and Synergistic Study of Novel Pyrazole Derivatives

A series of 20 novel pyrazole derivatives were designed and prepared, characterized by 1H-NMR, mass spectra (ES-MS), 13C-NMR, and elemental analysis. The synthesized compounds were then evaluated for their growth inhibitory activity

Design, synthesis and biological evaluation of hydrazone derivatives as anti-proliferative agents

A series of triaryl-substituted hydrazones as structural acyclic prototypes were synthesized and screened for anti-proliferative activity against breast (Michigan cancer foundation-7 and MD Anderson metastatic breast-231) and uterine cancer (Ishikawa) cel

TEMPO-mediated Aza-diels-alder reaction: Synthesis of tetrahydropyridazines using ketohydrazones and olefins

A novel, facile, and efficient method for the synthesis of tetrahydropyridazines by a one-pot tandem reaction of easily accessible ketohydrazones and olefins in the presence of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) has been successfully developed. The reaction involves the initial generation of azoalkenes from direct oxidative dehydrogenation of ketohydrazones using TEMPO as the commercially available oxidant, followed by a subsequent aza-Diels-Alder reaction with olefins.

Oxidation of 2-arylindoles for synthesis of 2-arylbenzoxazinones with oxone as the sole oxidant

A novel and efficient method for the oxidation of 2-arylindoles to synthesize 2-arylbenzoxazinones utilizing oxone as the sole oxidant has been developed. The reaction tolerates a wide range of functional groups and allows quick and atom-economical assembly of a variety of valuable 2-arylbenzoxazinones in high yields.