Category: tetrahydropyran

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.Jones, C. David; Winter, Mark A.; Hirsch, Kenneth S.; Stamm, Nancy; Taylor, Harold M.; Holden, Howard E.; Davenport, James D.; Krumkalns, Eriks V.; Suhr, Robert G. researched the compound: 1-(Bis(4-chlorophenyl)methyl)piperazine( cas:27469-61-0 ).Related Products of 27469-61-0.They published the article 《Estrogen synthetase inhibitors. 2. Comparison of the in vitro aromatase inhibitory activity for a variety of nitrogen heterocycles substituted with diarylmethane or diarylmethanol groups》 about this compound( cas:27469-61-0 ) in Journal of Medicinal Chemistry. Keywords: heterocycle nitrogen diphenylmethyl preparation aromatase inhibition; imidazole diphenylmethyl preparation aromatase inhibitor; pyridine diphenylmethyl preparation aromatase inhibitor. We’ll tell you more about this compound (cas:27469-61-0).

The preparation and in vitro aromatase-inhibitory activity of a wide variety of heterocyclic diphenylmethane derivatives, e.g., (p-ClC4H4)2CRR1 (R = imidazolyl, pyridyl, pyrimidyl, etc.; R1 = H, HO, 1-imidazolyl), are described. Thus (p-ClC4H4)2CHCl was treated with imidazole in DMF containing NaH to give 1-[bis(p-chlorophenyl)methyl]imidazole. The choice of the 2 diaryl-bearing moieties as a vehicle for evaluating the heterocycles was made by comparing a series of imidazole- and pyridine-derived compounds with similar pyrimidine compounds reported previously. A structural model for the most active compounds is also presented. The activity of a related series of compounds containing 2 heterocyclic moieties was consistent with the model. Many of the compounds evaluated, including representatives of the pyridine, imidazole, pyrimidine, pyrazole, triazole, thiazole, and isothiazole classes, exhibit EC50 potencies for aromatase inhibition at low nanomolar levels. These compounds are at least as potent as other nonsteroidal aromatase inhibitors reported previously.

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

SDS of cas: 27469-61-0. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 1-(Bis(4-chlorophenyl)methyl)piperazine, is researched, Molecular C17H18Cl2N2, CAS is 27469-61-0, about Acrylamide derivatives as antiallergic agents. 2. Synthesis and structure activity relationships of N-[4-[4-(diphenylmethyl)-1-piperazinyl]butyl]-3-(3-pyridyl)acrylamides. Author is Nishikawa, Yoshinori; Shindo, Tokuhiko; Ishii, Katsumi; Nakamura, Hideo; Kon, Tatsuya; Uno, Hitoshi.

A new series of 3-(3-pyridyl)acrylamides, e.g., I (R = H, R1 = 4-F, 4-Cl, 4-OMe, 3-Me, 4-Me, R2 = H, 4-Cl, 4-Me; R = 2-Cl, 2-NHMe, 2-Me, 5-F, 5-Cl, 5-Br, 5-OMe, 5-OH, 6-Cl, 6-OMe, 6-Me, 6-Bu, R1 = R2 = H), and 5-(3-pyridyl)-2,4-pentadienamides, e.g., II (R = H, Me, n = 3,4) were prepared and evaluated for antiallergic activity. Several of these compounds exhibited more potent inhibitory activities than the parent compound I (R = R1 = R2 = H) against the rat passive cutaneous anaphylaxis (PCA) reaction and the enzyme 5-lipoxygenase. Particularly, I (R = 6-Me, R1 = R2 = H) (III) showed an ED50 value of 3.3 mg/kg po in the rat PCA test, which was one-fifth of ketotifen and oxatomide. As compared with ketotifen and oxatomide, III showed a better balance of antiallergic properties due to inhibition of chem. mediator release, inhibition of 5-lipoxygenase, and antagonism of histamine.

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

HPLC of Formula: 97739-46-3. 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: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane, is researched, Molecular C16H21O3P, CAS is 97739-46-3, about Discovery of A-1331852, a First-in-Class, Potent, and Orally-Bioavailable BCL-XL Inhibitor. Author is Wang, Le; Doherty, George A.; Judd, Andrew S.; Tao, Zhi-Fu; Hansen, T. Matthew; Frey, Robin R.; Song, Xiaohong; Bruncko, Milan; Kunzer, Aaron R.; Wang, Xilu; Wendt, Michael D.; Flygare, John A.; Catron, Nathaniel D.; Judge, Russell A.; Park, Chang H.; Shekhar, Shashank; Phillips, Darren C.; Nimmer, Paul; Smith, Morey L.; Tahir, Stephen K.; Xiao, Yu; Xue, John; Zhang, Haichao; Le, Phuong N.; Mitten, Michael J.; Boghaert, Erwin R.; Gao, Wenqing; Kovar, Peter; Choo, Edna F.; Diaz, Dolores; Fairbrother, Wayne J.; Elmore, Steven W.; Sampath, Deepak; Leverson, Joel D.; Souers, Andrew James.

Herein we describe the discovery of A-1331852(I), a first-in-class orally active BCL-XL inhibitor that selectively and potently induces apoptosis in BCL-XL dependent tumor cells. This mol. was generated by re-engineering our previously reported BCL-XL inhibitor A-1155463 using structure-based drug design. Key design elements included rigidification of the A-1155463 pharmacophore and introduction of sp3-rich moieties capable of generating highly productive interactions within the key P4 pocket of BCL-XL. A-1331852 has since been used as a critical tool mol. for further exploring BCL-2 family protein biol., while also representing an attractive entry into a drug discovery program.

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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 Journal, Article, Molecules called Synthesis of aromatic rings embedded in polycyclic scaffolds by triyne cycloaddition: competition between carbonylative and non-carbonylative pathways, Author is Salacz, Laura; Girard, Nicolas; Suffert, Jean; Blond, Gaelle, which mentions a compound: 16400-32-1, SMILESS is CCC#CCBr, Molecular C5H7Br, Electric Literature of C5H7Br.

The carbonylative cycloaddition of triynes I (R1 = H, CH3; R2 = H, C5H11) can lead to carbonylative and non-carbonylative competitive pathways, each leading to the formation of an aromatic ring. The one-pot synthesis of fully- and unsym.-substituted tetracyclic 6,5,7,5-troponic and 6,5,6,5-benzenoid scaffolds, e.g., II, using pre-organized triynes I showing the competition between these two pathways has been described.

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

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 1-Bromo-2-pentyne, is researched, Molecular C5H7Br, CAS is 16400-32-1, about Diastereoselective synthesis of hexahydropyrrolo[2,1-a]isoquinolines by [3+2] cycloaddition and cyclative Heck alkyne hydroarylation.HPLC of Formula: 16400-32-1.

Intermediates generated from three-component [3+2] cycloaddition of 2-bromo arylaldehydes such as 2-bromobenzaldehyde, 2-bromo-5-(trifluoromethyl)benzaldehyde, 2-bromonaphthalene-1-carbaldehyde, etc. and maleimides I (R = Me, Et, t-Bu, benzyl) with amino esters (Et 2-aminopropanoate hydrochloride) or amino acids (2-amino-2-methylpropanoic acid) underwent N-propargylation and reductive Heck cyclization to form pyrrolidinedione-fused hexahydropyrrolo[2,1-a]isoquinolines e.g., II.

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

Product Details of 97739-46-3. 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: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane, is researched, Molecular C16H21O3P, CAS is 97739-46-3, about Application of palladium (trioxo-adamantyl cage phosphine)chloride complexes as catalysts for the alkoxycarbonylation of styrene; Pd catalysed tert-butoxycarbonylation of styrene. Author is Fuentes, Jose A.; Slawin, Alexandra M. Z.; Clarke, Matthew L..

Pre-catalysts of type [PdCl(allyl)(monophosphine)] where the monophosphine is one of the tri-oxo-adamantyl cage phosphines such as 1,3,5,7-tetramethyl-6-phenyl-2,4,8-trioxo-6-phospha-adamantane give very high reactivity in the regioselective hydroxycarbonylation and alkoxycarbonylation (hydro-esterification) of styrene at 60 °C. This high reactivity enables the use of tert-butanol as nucleophile in the alkoxycarbonylation of styrene.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Product Details of 82954-65-2. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: (S)-(2,2-dimethyl-[1,3]-dioxolan-4-yl)-methylamine, is researched, Molecular C6H13NO2, CAS is 82954-65-2, about Synthesis of phosphonoglycine backbone units for the development of phosphono peptide nucleic acids. Author is Doboszewski, Bogdan; Groaz, Elisabetta; Herdewijn, Piet.

A series of phosphono-modified backbone mimics based on achiral and chiral N-(dihydroxypropyl)glycine units were obtained by sequential addition of phosphonate and nucleobase moieties to suitably protected dihydroxypropylamines. Simple synthetic strategies enabled the preparation of various target derivatives that will be useful as building blocks for the preparation of new synthetic polymers containing a phosphonate internucleotide linkage in place of the standard phosphodiester bond.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

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

Reference of 1-Bromo-2-pentyne. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 1-Bromo-2-pentyne, is researched, Molecular C5H7Br, CAS is 16400-32-1, about Isodesmic C-H Borylation: Perspectives and Proof of Concept of Transfer Borylation Catalysis. Author is Rochette, Etienne; Desrosiers, Vincent; Soltani, Yashar; Fontaine, Frederic-Georges.

The potential advantages of using arylboronic esters as B source in the C-H borylation are discussed. The concept is showcased by using com. available 2-mercaptopyridine as a metal-free catalyst for the transfer borylation of heteroarenes, using arylboronates as borylation agents. The catalysis shows a unique functional group tolerance among C-H borylation reactions, tolerating notably terminal alkene and alkyne functional groups. The computational study of the mechanism is also described.

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