Tag: M.W:300-400

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《New derivatives of 1,4-disubstituted piperazine》. Authors are Morren, H. G.; Denayer, R.; Linz, R.; Mathieu, J.; Strubbe, H.; Trolin, S..The article about the compound:1-(Bis(4-chlorophenyl)methyl)piperazinecas:27469-61-0,SMILESS:ClC1=CC=C(C=C1)C(N2CCNCC2)C3=CC=C(Cl)C=C3).Recommanded Product: 1-(Bis(4-chlorophenyl)methyl)piperazine. Through the article, more information about this compound (cas:27469-61-0) is conveyed.

New 1,4-disubstituted piperazines were prepared and their tranquillizing properties and action on gastric ulcers examined ο-(Chlorobenzhydryl)piperazine with Me3N and PhCH2Cl in PhMe gave N-(ο-chlorobenzhydryl)-N’-benzylpiperazine, b0.005 210°; di-HCl salt, m. 223°. By refluxing 2 moles chloroethoxyethanol or chloroethoxyethoxyethanol with 110 g. Me3N and 1 mole of various substituted benzhydrylpiperazines the following N-(R1-substituted-benzhydryl)-N’-(R-substituted) piperazines were prepared (R’ = CH2CH2OCH2CH2OH) (R and b.p./mm. given): ο-Cl, 215°/0.01; p-Br, 224°/0.01; m-Cl, 215°/0.5; m-Br, 225°/0.02; ο-Br, 215-20°/0.1; m-OMe, 225°/ 0.07; m-Me, 210°/0.1; ο-C5H11O, 248°/0.01; m-Bu, 215°/0.01; ο-Me, 205°/0.01. (R = CH2CH2OCH2CH2OCH2CH2OH): m-Br, 240-5°/0.01; ο-Br, 240-5°/0.005; p-Br, 245-50°/0.02; ο-Cl, 240-5°/0.01. In an N atm. 0.1 g. atom Na is dissolved with warming in a convenient alc., after cooling 1-benzhydryl-4-(ω-chloroalkanoyl)piperazine in toluene added, the toluene distilled, the mixture heated 3 hrs at 140°, to the cooled liquid 3:7 EtOH-C6H6 added, the filtrate evaporated, and the residue distilled in vacuo. By this method the following N-(ο-chlorobenzhydryl)-N’-(R-substituted) piperazines were prepared (R and b.p./mm. given): CH2CH2O(CH2)5OH, 225°/0.003; CH2CH2OCH2CH(OH)CH2OH, 200°/0.05; CH2CH2OCH.(CH2)2.CH(OH). CH2.CH2, 260°/0.05. By refluxing 0.1 mole 1-(ο-chlorobenzhydryloxyethyl)piperazine with 0.11 mole triethylamine and 0.1 mole halogenated derivative, RX, in xylene 12 hrs. the following N-(ο-chlorobenzhydryloxyethyl)-N’-(R-substituted)piperazines were prepared (R and b.p./mm. given): Bu, 210°/0.1; (CH2)2OCH2CH2OH, 250°/0.03 (in the presence of excess chloroethoxyethanol); CH2Ph, 230-5°/0.1; ο-MeC6H4CH2, 234-6°/0.01; ο-ClC6H4CH2, 240°/0.1; ο-ClC6H4CO, 255°/0.1; p-Me3CC6H4CH2O(CH2)2, 245-50°/0.1. By refluxing 0.1 mole monosubstituted piperazine with 0.11 mole triethylamine and 0.1 mole of various appropriate ω-chloroalkanoyl and benzhydryl oxides in xylene during 12 hrs. the following N-[(R’-substituted)benzhydryloxyalkylene] – N’ – (R-substituted)piperazines (alkylene = (CH2)n) were prepared (R1, R, n, and b.p./mm. given): ο-Cl, H(I), 2, 193-5°/0.15; ο-Cl, Me, 2, 185-190°/0.1; ο-Cl, CHMe2, 2, 184-6°/0.04; ο-Me, CHMe2, 2, 170°/0.005; ο-Cl, CH2CHMe2, 2, 185-190°/0.02; ο-Cl, (cyclohexyl, 2, 235-40°/0.05; ο-Cl, 3-methylcyclohexyl, 2; 230-2°/0.01; H, CH2CH2OH, 2, 220°/0.1; ο-Cl, CH2CH(OH)CH2OH, 2, – (decompose); ο-Cl, ο-Me-C6H4CH2; 2; 235°/0.05; ο-Me, m-MeC6H4CH2, 2, 224°/0.015; m-Cl, m-MeC6H4CH2, 2, 250°/0.1; ο-Me, ο-MeC6H4CH2, 2, 215°/0.005; ο-Cl, CHMe2, 3, 215°/0.7; ο-Cl, m-MeC6H4CH2, 3, 250°/0.5; ο-Cl, ο-MeC6H4CH2, 3, 260°/0.1; ο-Cl, CHMe2, 4, 210°/0.1; ο-Cl, m-MeC6H4CH2, 4, 245°/0.1; ο-Cl, CHMe2, 6, 230°/0.2; ο-Cl, ο-MeC6H4CH2, 6, 265°/0.1. N-[2-(ο-Chlorobenzhydryloxy)ethyl]-N’-(2-hydroxyethyl)piperazine (II), b0.1 230°, was prepared in 65% yield by melting at 150° 1.1 mole N-hydroxy-N’-ethylpiperazine, adding dropwise 0.5 mole ο-ClC6H4CHClPh, and warming 2 hrs. at 150°. The mixture is cooled at 75° and 250 ml. C6H6 added. After cooling and addition of NaOH the benzene layer is washed, evaporated, and the residue distilled in vacuo. II (0.1 mole) and 0.11 mole NaNH2 in 100 ml. toluene is refluxed until no NH3 is liberated. After cooling at 30° 0.12 mole p-tert-butylbenzyl bromide is added and the mixture refluxed 2 hrs. The cooled mass is extracted with dilute HCl, the acid-extract basified with K2CO3, and extracted with C6H6. After evaporation the residue is distilled in vacuo, giving 45% N-[2-(ο-chlorobenzhydryloxy)ethyl] – N’- [2-(p-tert-butylbenzyloxy)ethyl]piperazine, b0.1 275°. By refluxing 0.1 mole I, 11 g. triethylamine, 100 ml. toluene, and 0.1 mole AcCl during 2 hrs. N-[2-(ο-chlorobenzhydryloxy)ethyl]-N’-acetylpiperazine (III) is formed, b0.02 220-5°. Reduction of III with LiAlH4 yielded 88% N-[2-(ο-chlorobenzhydryloxy)ethyl]-N’-ethylpiperazine, b0.03 178-80°.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 27469-61-0, is researched, Molecular C17H18Cl2N2, about Synthesis and Topical Antiinflammatory and Antiallergic Activities of Antioxidant o-Aminophenol Derivatives, the main research direction is antiinflammatory structure activity antioxidant aminophenol; antiallergy structure activity antioxidant aminophenol; inflammation inhibitor antioxidant aminophenol; allergy inhibitor antioxidant aminophenol.Formula: C17H18Cl2N2.

A series of o-aminophenol derivatives I, II, and III (R1, R2 = Ph, 4-ClC6H4, 4-FC6H4, R3 = H, Me, CHMe2, R4 = Me, CMe3, m, n = 2, 3) bearing H1-antihistaminic structures were prepared to develop novel compounds for topical use possessing antiallergic as well as antiinflammatory activities. The effects of I-III were investigated on lipid peroxidation in rat brain homogenates, antiinflammatory effect on arachidonic acid- and 12-O-tetradecanoylphorbol-13-acetate-induced mouse ear edema and antiallergic effect on 48-h homologous passive cutaneous anaphylaxis in rats. Furthermore, the effects of these compounds on delayed-type hypersensitivity reaction in mice were examined Several N-monosubstituted amino-4-methylphenols exert potent inhibitory activities in all of these assays. Of these compounds, I (R1 = R2= 4-FC6H4, R3 = H, R4 = Me, m = 3, n = 2) was chosen for further development as AD0261.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Quality Control of 1-(Bis(4-chlorophenyl)methyl)piperazine. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 1-(Bis(4-chlorophenyl)methyl)piperazine, is researched, Molecular C17H18Cl2N2, CAS is 27469-61-0, about Synthesis and antiallergic activities of diphenylmethylpiperazine derivatives. Author is Wang, Lisheng; Jiang, Hongyu; Zhou, Yonghong; Liu, Baili; Ji, Zhizhong.

The diphenylmethylpiperazine derivatives were designed and synthesized to find high anti-allergic compounds Twenty-one compounds of 1-R3-4-[(4-R1-phenyl)(4-R2-phenyl)methyl]piperazine (R1 = H, Cl, F, methoxy, tert-Bu, or nitro; R2 = H, F, Cl, or tert-butyl; and R3 = Et, benzyl, Bu, octyl, cetyl, or dodecyl), among which 17 compounds were new ones, were designed and synthesized from benzophenone derivatives by reduction with Zn/NaOH, substitution reaction with piperazine, and substitution reaction with R3Br. Their structures were identified by IR, 1H-NMR spectral, and elemental anal. Some compounds were evaluated from two pharmacol. models of the delayed-type hypersensitivity response to 2,4-dinitrochlorobenzene (DNCB) in mice and vascular permeability reduced by histamine in mice. Two compounds (R1 = R2 = H and R3 = Bu or dodecyl) had high antiallergic effects on the delayed-type hypersensitivity, and 5 compounds (R1 = R2 = H, R3 = octyl, cetyl, or dodecyl; R1 = nitro or F, R2 = H or F, R3 = dodecyl) had high antihistamine activity. Antiallergic activity was stronger with longer carbon chains.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Recommanded Product: 1-(Bis(4-chlorophenyl)methyl)piperazine. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 1-(Bis(4-chlorophenyl)methyl)piperazine, is researched, Molecular C17H18Cl2N2, CAS is 27469-61-0, about Synthesis and quantitative structure-activity relationships of antibacterial 1-(substituted benzhydryl)-4-(5-nitro-2-furfurylideneamino)piperazines.

Twelve title compounds I (R = H, 4-Cl, 3-Me, 3,4-Cl2, etc., R1 = H, Cl, Me) were prepared by treating the corresponding benzhydryl chloride with piperazine followed by nitrosation, reduction, and condensation with 5-nitro-2-furancarboxaldehyde. I were examined for in vitro antimicrobial activity. The compounds were active against Bacillus cereus 7, Bacillus megaterium 122, Bacillus subtilis 104, Clostridium perfringens 13, and the tetracycline-resistant Clostridium perfringens 37. Regression analyses on the antibacterial activity data based on the Hansch approach, using π, π2, and σ parameters, yielded several statistically significant correlation equations. 1-Benzhydryl-4-(5-nitro-2-furfurylideneamino)piperazine stopped the protein and DNA syntheses in C. perfringens 13, as indicated by precipitable radioactivity. The compound, however, showed no effect on the cell wall synthesis in the bacteria.

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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Synthetic Route of C17H18Cl2N2. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 1-(Bis(4-chlorophenyl)methyl)piperazine, is researched, Molecular C17H18Cl2N2, CAS is 27469-61-0, about Design, Synthesis, and Biological Evaluation of 2-((4-Bisarylmethyl-piperazin-1-yl)methyl)benzonitrile Derivatives as HCV Entry Inhibitors. Author is Wang, Yixuan; Li, Jianrui; Tan, Jiali; Yang, Bo; Quan, Yanni; Peng, Zonggen; Li, Yanping; Li, Zhuorong.

Viral entry inhibitors are absent in hepatitis C virus (HCV) treatment regimens although a dozen direct-acting antiviral (DAA) drugs are available now. Based on a previously identified HCV entry inhibitor L0909, chem. space exploration and structure-activity relationship (SAR) studies led to the discovery of a new derived scaffold 2-((4-bisarylmethyl-piperazin-1-yl)methyl)benzonitrile. Several new scaffold derivatives exhibited higher in vitro anti-HCV activity at low nanomolar concentrations compared to L0909. A biol. study indicated that the high potency of few active derivatives were primarily driven by the inhibitory effect on the virus entry stage. Moreover, an SPR experiment confirmed that this class of derivatives might target the HCV E1 protein. Pharmacokinetic studies indicated that few compounds are orally available and long-lasting in rat plasma after oral administration to rats by a single dose of 15 mg/kg. In conclusion, this work provided a novel 2-((4-bisarylmethyl-piperazin-1-yl)methyl)benzonitrile chemotype deserving further investigation into its antiviral therapeutic potential.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Eaton, John K.; Furst, Laura; Cai, Luke L.; Viswanathan, Vasanthi S.; Schreiber, Stuart L. published the article 《Structure-activity relationships of GPX4 inhibitor warheads》. Keywords: structure preparation GPX4 inhibitor propiolamide NO warhead; Covalent inhibitors; Ferroptosis; GPX4; Masked electrophiles.They researched the compound: 1-(Bis(4-chlorophenyl)methyl)piperazine( cas:27469-61-0 ).COA of Formula: C17H18Cl2N2. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:27469-61-0) here.

Direct inhibition of GPX4 requires covalent modification of the active-site selenocysteine. While phenotypic screening has revealed that activated alkyl chlorides and masked nitrile oxides can inhibit GPX4 covalently, a systematic assessment of potential electrophilic warheads with the capacity to inhibit cellular GPX4 has been lacking. Here, we survey more than 25 electrophilic warheads across several distinct GPX4-targeting scaffolds. We find that electrophiles with attenuated reactivity compared to chloroacetamides are unable to inhibit GPX4 despite the expected nucleophilicity of the selenocysteine residue. However, highly reactive propiolamides we uncover in this study can substitute for chloroacetamide and nitroisoxazole warheads in GPX4 inhibitors. Our observations suggest that electrophile masking strategies, including those we describe for propiolamide- and nitrile-oxide-based warheads, may be promising for the development of improved covalent GPX4 inhibitors.

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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Category: tetrahydropyran. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 1-(Bis(4-chlorophenyl)methyl)piperazine, is researched, Molecular C17H18Cl2N2, CAS is 27469-61-0, about Synthesis and Topical Antiinflammatory and Antiallergic Activities of Antioxidant o-Aminophenol Derivatives. Author is Sugiyama, Naoki; Akahoshi, Fumihiko; Kuwahara, Shigeki; Kajii, Masahiko; Sakaue, Yoshiko; Yakumaru, Haruko; Sugiura, Masanori; Fukaya, Chikara.

A series of o-aminophenol derivatives I, II, and III (R1, R2 = Ph, 4-ClC6H4, 4-FC6H4, R3 = H, Me, CHMe2, R4 = Me, CMe3, m, n = 2, 3) bearing H1-antihistaminic structures were prepared to develop novel compounds for topical use possessing antiallergic as well as antiinflammatory activities. The effects of I-III were investigated on lipid peroxidation in rat brain homogenates, antiinflammatory effect on arachidonic acid- and 12-O-tetradecanoylphorbol-13-acetate-induced mouse ear edema and antiallergic effect on 48-h homologous passive cutaneous anaphylaxis in rats. Furthermore, the effects of these compounds on delayed-type hypersensitivity reaction in mice were examined Several N-monosubstituted amino-4-methylphenols exert potent inhibitory activities in all of these assays. Of these compounds, I (R1 = R2= 4-FC6H4, R3 = H, R4 = Me, m = 3, n = 2) was chosen for further development as AD0261.

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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Related Products of 27469-61-0. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 1-(Bis(4-chlorophenyl)methyl)piperazine, is researched, Molecular C17H18Cl2N2, CAS is 27469-61-0, about Synthesis and in-vitro study of novel (Z)-1-benzhydryl-4-cinnamylpiperazine derivatives as potential anticancer agents. Author is Shivaprakash, S.; Kiran, K. R.; Diwakar, Latha; Reddy, G. Chandrasekara.

A series of novel (Z)-1-benzhydryl-4-cinnamylpiperazines I [R1 = R2 = Ph, 4-ClC6H4, 4-MeC6H4, 4-FC6H4; R1 = Ph, R2 = 4-ClC6H4, 4-BrC6H4; R3 = Ph, 4-MeOC6H4, 3,5-(MeO)2C6H3, piperonyl, etc.] was synthesized in six steps starting from the corresponding benzophenones R1COR2. The final step was Wittig condensation of the appropriate benzyltriphenylphosphonium halides R3CH2P+Ph3 X- (X = Cl, Br) with 1-benzhydryl-4-(formylmethyl)piperazines, which afforded pure (Z)-1-benzhydryl-4-cinnamylpiperazines I. The anticancer potential (MTT assay) of the synthesized compounds was tested against human cervical cancer (HeLa) and murine microglial (BV-2) cell lines. The compound I (R1 = R2 = 4-FC6H4; R3 = Ph) (cis-flunarizine) exhibited exceptionally superior activity against both HeLa and BV-2 cell lines with IC50 value of 13.23±3.51 μM and 23.1±4.12 μM, resp. Hence, this compound may be considered as a potential lead mol. for further development.

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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Preprint, ChemRxiv called Structure-activity relationships of glutathione peroxidase 4 inhibitor warheads, Author is Eaton, John K.; Furst, Laura; Cai, Luke L.; Viswanathan, Vasanthi S.; Schreiber, Stuart L., which mentions a compound: 27469-61-0, SMILESS is ClC1=CC=C(C=C1)C(N2CCNCC2)C3=CC=C(Cl)C=C3, Molecular C17H18Cl2N2, Formula: C17H18Cl2N2.

Direct inhibition of GPX4 requires covalent modification of the active-site selenocysteine. While phenotypic screening has revealed that activated alkyl chlorides and masked nitrile-oxides can inhibit GPX4 covalently, a systematic assessment of potential electrophilic warheads with the capacity to inhibit cellular GPX4 has been lacking. Here we survey more than 25 electrophilic warheads across several distinct GPX4-targeting scaffolds. Surprisingly, we find that electrophiles with attenuated reactivity compared to chloroacetamides are unable to target GPX4. The highly reactive propiolamide warheads we uncover in this study highlight the potential need for masking strategies similar to those we have described for nitrile-oxide-based GPX4 inhibitors. Finally, our observations that there are spatial requirements between warhead and scaffold for achieving optimal GPX4 targeting and that certain low-mol.-weight analogs inhibit GPX4 with selectivity suggest that rational design of GPX4 inhibitors may be a productive approach. The generation of ligand-bound crystal structures to facilitate such studies should therefore be prioritized by the field.

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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 27469-61-0, is researched, Molecular C17H18Cl2N2, about Discovery, Optimization, and Characterization of Novel Chlorcyclizine Derivatives for the Treatment of Hepatitis C Virus Infection, the main research direction is chlorcyclizine hepatitis antiviral virus infection.Application In Synthesis of 1-(Bis(4-chlorophenyl)methyl)piperazine.

Recently, we reported that chlorcyclizine (CCZ, Rac-2), an over-the-counter antihistamine piperazine drug, possesses in vitro and in vivo activity against hepatitis C virus. Here, we describe structure-activity relationship (SAR) efforts that resulted in the optimization of novel chlorcyclizine derivatives as anti-HCV agents. Several compounds exhibited EC50 values below 10 nM against HCV infection, cytotoxicity selectivity indexes above 2000, and showed improved in vivo pharmacokinetic properties. The optimized mols. can serve as lead preclin. candidates for the treatment of hepatitis C virus infection and as probes to study hepatitis C virus pathogenesis and host-virus interaction.

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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics