64657-47-2

Upstream product

• 67-64-1 acetone 
• 635-93-8 5-chlorosalicyclaldehyde 
• 106-48-9 4-chloro-phenol 

Downstream Products

• 119607-55-5 (1E,4E)-1-(5-Chloro-2-hydroxy-phenyl)-5-(4-methoxy-phenyl)-penta-1,4-dien-3-one 
• 1383253-13-1 (Z)-4-chloro-2-[(3-methyl)-3-pentenyl]phenol 
• 1383253-05-1 (E)-4-chloro-2-[(3-methyl)-3-pentenyl]phenol 
• 1421330-84-8 C₁₂H₁₂BrClN₂O₂ 
• 1421330-77-9 C₁₀H₁₁ClN₂O 
• 119607-66-8 (1E,4E)-1-(5-Chloro-2-hydroxy-phenyl)-5-(9-ethyl-9H-carbazol-3-yl)-penta-1,4-dien-3-one 
• 119607-59-9 (1E,4E,6E)-1-(5-Chloro-2-hydroxy-phenyl)-7-(4-methoxy-phenyl)-hepta-1,4,6-trien-3-one 
• 123302-61-4 4-Chloro-2-((E)-2-[1,8]naphthyridin-2-yl-vinyl)-phenol 

Relevant academic research and scientific papers

Design and synthesis of novel 2-pyrazoline-1-ethanone derivatives as selective MAO inhibitors

Thirty seven novel 2-pyrazoline-1-ethanone derivatives were designed, synthesized and evaluated as selective hMAO inhibitors. Among them, compounds 7h (IC50 = 2.40 μM) and 12c (IC50 = 2.00 μM) exhibited best inhibitory activity and selectivity against hMAO-A, surpassing that of the positive control Clorgyline (IC50 = 2.76 μM). Based on selective activity of hMAO-A, SAR analysis showed that the order of N1 substituent contribution was bromo (3) > piperidinyl (4) > morpholinyl (5) > imidazolyl (6), and compounds with electron-withdrawing substituents (-F, -Cl) at C3 or C5 phenyl ring of 2-pyrazoline nucleus dedicated stronger MAO-A inhibitory activity. Molecular docking showed that compounds 7h and 12c were nicely bound to hMAO-A via two hydrogen bonds (SER209, GLU216), one Pi-Pi interaction and three hydrogen bonds (SER209, GLU216, TYR69), one Sigma-Pi interaction, respectively. In addition, the substituent at C3 position of 2-pyrazoline with the N1 acetyl has little effect on MAO-A inhibitory activity. These data support further studies to assess rational design of more efficiently selective hMAO inhibitors in the future.

Tricyclic pyrazolo[1,5-d][1,4]benzoxazepin-5(6H)-one scaffold derivatives: Synthesis and biological evaluation as selective BuChE inhibitors

BuChE inhibitors play important roles in treatment of patients with advanced Alzheimer's disease (AD). A series of tricyclic pyrazolo[1,5-d][1,4]benzoxazepin-5(6H)-one derivatives were synthesized and evaluated as acetylcholinesterase (AChE) and butyrylch

Design, synthesis and biological evaluation of tricyclic pyrazolo[1,5-c][1,3]benzoxazin-5(5H)-one scaffolds as selective BuChE inhibitors

Based on the structural analysis of tricyclic scaffolds as butyrylcholinesterase (BuChE) inhibitors, a series of pyrazolo[1,5-c][1,3]benzoxazin-5(5H)-one derivatives were designed, synthesized and evaluated for their acetylcholinesterase (AChE) and BuChE inhibitory activity. Compounds with 5-carbonyl and 7- or/and 9-halogen substitutions showed potential BuChE inhibitory activity, among which compounds 6a, 6c and 6g showed the best BuChE inhibition (IC50 = 1.06, 1.63 and 1.63 μM, respectively). The structure–activity relationship showed that the 5-carbonyl and halogen substituents significantly influenced BuChE activity. Compounds 6a and 6g were found nontoxic, lipophilic and exhibited remarkable neuroprotective activity and mixed-type inhibition against BuChE (Ki = 7.46 and 3.09 μM, respectively). Docking studies revealed that compound 6a can be accommodated into BuChE via five hydrogen bonds, one Pi–Sigma interaction and three Pi–Alkyl interactions.

Identification of human telomerase inhibitors having the core of N-acyl-4,5-dihydropyrazole with anticancer effects

Eight human telomerase inhibitors (5a–5h) having the core of N-acyl-4,5-dihydropyrazole with anticancer effects were identified in this study. Biological results revealed that a few compounds had potent anticancer activities against three common tumor cell lines (SGC-7901, HepG2 and MGC-803). Among them, compound 5c, with a molecular weight of only 272.2?Da, had antiproliferative activities against SGC-7901 and MGC-803 with EC50values of 2.06?±?0.17 and 2.89?±?0.62?μM, respectively, better than 5-Fluorouracil. Compound 5c inhibited the enzyme of telomerase with an IC50value of 1.86?±?0.51?μM, surpassing the control compound, ethidium bromide. Modeling study showed that this compound can reside in the binding pocket of the telomerase/TNA:DNA hairpin complex. When the moiety of N-acyl was changed to N-sulfonyl, the gotten compounds (8a–8i) had deteriorative activities against both these three cancer cell lines and the enzyme of telomerase.

Design and synthesis of novel 2-methyl-4,5-substitutedbenzo[f]-3,3a,4,5- tetrahydro-pyrazolo[1,5-d][1,4]oxazepin-8(7H)-one derivatives as telomerase inhibitors

Eight novel 4,5-tetrahydropyrazolo[1,5-d][1,4]oxazepine derivatives have been synthesized and purified to be screened for anticancer activity. By a modified TRAP assay, some titled compounds were tested against telomerase, and compound 4a showed the most potent inhibitory activity with IC50 value at 0.78 ± 0.22 μM. Western blot assays showed that compounds 4a and 4b could inhibit expression of Cyclin D1, TERT, phospho-AKT and PI3K/AKT pathway.

Pd(II)-catalyzed asymmetric Wacker-type cyclization for the preparation of 2-vinylchroman derivatives with biphenyl tetraoxazoline ligands

This article describes an efficient method for the preparation of chiral chroman derivatives by the Pd(II)-catalyzed asymmetric Wacker-type cyclization using a chelation-induced axially chiral tetraoxazoline ligand. Under the optimized conditions, up to 80% yield and up to 92% ee were obtained. This is the first example to utilize o-trisubstituted 3-butenylphenols as substrates in such transformation.

An atom-economical approach to the synthesis of potentially bioactive 2 H-chromenes via CuI-catalyzed reactions of Alkyl/Aryl-(E)-(o-propargyloxy)styryl ketones

A series of potentially bioactive 2H-chromenes have been synthesized in good yields (60-82%) via CuI-catalyzed reactions of alkyl/aryl-(E)-(o- propargyloxy)styryl ketones in an atom-economical approach. Georg Thieme Verlag Stuttgart · New York.

Tricyclic cyanoguanidines: Synthesis, site of action and insecticidal activity of a novel class of reversible acetylcholinesterase inhibitors

Bridged-tricyclic cyanoguanidines 1 were found to be active as insecticides. The preparation and structure-activity relationships of oxacyclic (X = O) and carbocyclic (X = CH2) analogues of 1 is described. Compounds 1 were found to inhibit acetylcholinesterase with IC50 values comparable to the organophosphate Paraoxon. Unlike organophosphates, cyanoguanidines 1 were shown to reversibly bind acetylcholinesterase. This mode of action is shared by the structurally-related natural product Huperzine A.

POLYMETHINE DYES BASED ON BENZOPYRYLIUM IONS

A method is described for the synthesis of a series of benzopyrylium polymethine dyes by the acid cyclization of 2-hydroxystyryl polyenyl ketones, obtained by the successive crotonic condensation of aliphatic or alicyclic ketones initially with salicylaldehyde and its alkyl or halogen derivatives and then with aromatic aldehydes containing a p-methoxyphenyl or 9-alkylcarbazole fragment.The electronic absorption spectra of the new benzopyrylium dyes were studied.