Month: December 2022

Quinolone antibacterials containing the new 7-[3-(1-aminoethyl)-1-pyrrolidinyl] side chain: the effects of the 1-aminoethyl moiety and its stereochemical configurations on potency and in vivo efficacy was written by Domagala, John M.;Hagen, Susan E.;Joannides, Themis;Kiely, John S.;Laborde, Edgardo;Schroeder, Mel C.;Sesnie, Josephine A.;Shapiro, Martin A.;Suto, Mark J.;Vanderroest, Steven. And the article was included in Journal of Medicinal Chemistry in 1993.Computed Properties of C10H8Cl2FNO3 This article mentions the following:

A series of stereochemically pure 7-[3-(1-aminoethyl)-1-pyrrolidinyl]-1,4-dihydro-4-oxoquinoline and 1,8-naphthyridine-3-carboxylic acids, with varied substituents at the 1-, 5-, and 8-positions, were synthesized to study the effects of the 7-[3-(1-aminoethyl)-1-pyrrolidinyl] moiety on potency and in vivo efficacy relative to the known 7-[3-(aminomethyl)-1-pyrrolidinyl] derivatives The antibacterial efficacies of the target compounds and their relevant reference agents were determined in vitro using an assortment of Gram-neg. and Gram-pos. organisms and in vivo using Escherichia coli and Streptococcus pyogenes mouse infection models. The effects of the 7-[3-(1-aminoethyl)-1-pyrrolidinyl] moiety were also examined at the level of the target enzyme by employing a DNA-gyrase supercoiling inhibition assay. Selected compounds were further evaluated for potential phototoxic and clastogenic liabilities using a phototoxicity mouse model and an in vitro mammalian cell cytotoxicity assay. It was found that the differences in in vitro antibacterial activity between the stereoisomers were significantly greater than previously reported for other optically pure 3-substituted pyrrolidinyl side chains. Relative to their 7-[3-(aminomethyl)-1-pyrrolidinyl] analogs, the (3R,1S)-3-(1-aminoethyl)pyrrolidines generally conferred a 2-4-fold increase in Gram-pos. in vitro activity and an average of 10-fold improvement in oral efficacy. The level of phototoxicity and cytotoxicity of the product quinolones was ultimately determined by the combined influence of the 7-[3-(1-aminoethyl)-1-pyrrolidinyl] side chains and the other quinolone substituents. From this study, several compounds were identified with outstanding antibacterial activity and low degrees of phototoxicity and mammalian cell cytotoxicity. One such agent, R,S–I (PD 140248), showed the best overall blend of safety and efficacy. In the experiment, the researchers used many compounds, for example, Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6Computed Properties of C10H8Cl2FNO3).

Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Computed Properties of C10H8Cl2FNO3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Hydroxy-benzimidazoles as blue-green emitters: Synthesis, structural and DFT studies was written by Sathyanarayana, Reshma;Kumar, Vasantha;Pujar, G. H.;Poojary, Boja;Shankar, Madan Kumar;Yallappa, Sangappa. And the article was included in Journal of Photochemistry and Photobiology, A: Chemistry in 2020.Safety of Ethyl 4-chloro-3-nitrobenzoate This article mentions the following:

The new benzimidazole ligands (3a-e) were synthesized using Et 4-(butylamino)-3-nitrobenzoate and substituted salicylaldehyde in the presence of sodium dithionite reagent which undergoes “one-pot” nitro reductive cyclization. Here benzimidazole moiety acts as an electron-acceptor (A) whereas substituted 2-hydroxyphenyl moiety acts as an electron-donor (D) unit. The mol. structures were characterised by FTIR, ¹H NMR, ¹³C NMR, single crystal XRD and MS anal. Optoelectronic properties were determined by UV-vis, solution and solid photoluminescence, quantum yield and lifetime. The solvent-dependent absorption and emission were studied using both polar protic and polar aprotic solvents. All the derivatives exhibited ESIPT, especially compound Et 1-butyl-2-(3,5-dichloro-2-hydroxyphenyl)-1H-benzo[d]imidazole-5-carboxylate (3e) displayed dual emission in both polar protic and polar aprotic solvents. The compound stability and electrochem. property were determined by thermal gravimetric anal. (TGA) and cyclic voltammetry (CV) resp. The compounds emit intense blue-green fluorescence with high to moderate quantum yield. Also, these derivatives exhibited a high Stokes shift. The crystal packing is stabilized through intermol. hydrogen bonds (C—H…O) and intermol. interactions (π… π). The findings of results help in developing novel ligands in the field of organic optoelectronics. In the experiment, the researchers used many compounds, for example, Ethyl 4-chloro-3-nitrobenzoate (cas: 16588-16-2Safety of Ethyl 4-chloro-3-nitrobenzoate).

Ethyl 4-chloro-3-nitrobenzoate (cas: 16588-16-2) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Safety of Ethyl 4-chloro-3-nitrobenzoate

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Nitrophenyl Derivatives as Aldose Reductase Inhibitors was written by Costantino, Luca;Ferrari, Anna Maria;Gamberini, Maria Cristina;Rastelli, Giulio. And the article was included in Bioorganic & Medicinal Chemistry in 2002.SDS of cas: 16588-16-2 This article mentions the following:

Nitrophenyl derivatives were recently discovered as a new class of ALR2 inhibitors by means of docking and database screening of the National Cancer Institute database of organic mols. The nitro group was predicted to bind to the Tyr48 and His110 active site residues of the enzyme, the site where acidic ALR2 inhibitors such as carboxylic acids bind in their anionic form. Given the novelty of these compounds, we decided to expand their structure-activity relationships by synthesizing and testing a series of derivatives and the corresponding compounds having a carboxylic group instead of the nitro moiety; the results obtained were rationalized by means of docking and mol. dynamics simulations. On the whole there is an agreement between inhibitory data and the results of mol. modeling experiments, supporting the hypothesized binding mode of these compounds In the experiment, the researchers used many compounds, for example, Ethyl 4-chloro-3-nitrobenzoate (cas: 16588-16-2SDS of cas: 16588-16-2).

Ethyl 4-chloro-3-nitrobenzoate (cas: 16588-16-2) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.SDS of cas: 16588-16-2

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

SkinEthic HCE Eye Irritation Test: Similar performance demonstrated after long distance shipment and extended storage conditions was written by Leblanc, Virginie;Yokota, Mariko;Grandidier, Marie-Helene;Yoshida, Daisuke;Adriaens, Els;Cotovio, Jose;Kyoutani, Daiki;Alepee, Nathalie. And the article was included in Toxicology In Vitro in 2019.Formula: C10H8Cl2FNO3 This article mentions the following:

Assessment of ocular irritation risk is an international regulatory requirement in the safety evaluation of products. In response to this need, L’Oreal developed the SkinEthic Human Corneal Epithelium (HCE) Eye Irritation Test (EIT) that has been included in OECD Test Guideline 492. SkinEthic HCE EIT is able to correctly and reliably identify chems. not requiring classification vs. labeling for eye irritation or serious eye damage according to UN GHS. In an effort to promote its global use, the performance of the method was evaluated after long-distance shipment and compared to European shipment conditions. Results obtained by Cosmos Tech. Center (Japan) after extended tissues transit were compared to results obtained in L’Oreál (France). Thirty-nine out of 40 blinded chems., representing different functional chem. classes, were consistently classified in both laboratories The SkinEthic HCE EIT test method was also evaluated for its performance after extended storage of the tissues. The performance was in agreement with the values reported in OECD TG 492, with an overall accuracy of 87.1% (based on 119 chems.), sensitivity of 95.5% and specificity of 73.5%. The reliability and relevance of SkinEthic HCE EIT test method after long-distance shipment and extended storage remain in agreement with regulatory validation criteria. In the experiment, the researchers used many compounds, for example, Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6Formula: C10H8Cl2FNO3).

Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Formula: C10H8Cl2FNO3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Caffeine-alginate immobilized CeTiO₄ bionanocomposite for efficient photocatalytic degradation of methylene blue was written by Hasan, Imran;Alharthi, Fahad A.. And the article was included in Journal of Photochemistry and Photobiology, A: Chemistry in 2022.Related Products of 61-73-4 This article mentions the following:

The degradation of colored dyes through the photocatalysis process has been proved to be a promising technique for wastewater treatment. Herein, we report the synthesis of cerium titanate (CeTiO₄) nanoparticles (NPs) immobilized with a blend of caffeine (Caf) grafted alginate (Alg) biopolymer resulting in the formation of Caf-Alg@CeTiO₄ bionanocomposite (BNC) material. The material was characterized by various instrumental techniques such as Fourier transform IR (FTIR), X-ray diffraction (XRD), Scanning electron microscope- Electron dispersive X-ray (SEM-EDX), Transmission electron microscope (TEM), Brunauer, Emmett and Teller (BET), XPS and UV-visible (UV-VIS) spectroscopy. The XRD data and results suggested the presence of anatase phase of TiO₂ which is a little bit mitigated due to doping of Ce⁴⁺ at the grain sides resulting in an orthorhombic structure with 16.23 nm crystallite size. Further, the material was probed as a photocatalyst to degrade methylene blue (MB) under visible solar radiation. The antagonistic and synergistic effects of reaction variables like irradiation time (30-60 min), pH (6-10), MB concentration (50-100 mg L^-1), and catalyst dose (0.5-1.5 g L^-1) on MB degradation was designed by a combination of statistical model response surface methodol. (RSM) and Box-Behnken design (BBD). The statistically optimized results with min. error were computed as irradiation time as 50 min, pH as 6.6, MB concentration as 98.60 mg L^-1 and catalyst dose as 0.57 g L^-1 with maximum MB degradation of 98%. The kinetic studies revealed that the photocatalytic degradation process followed pseudo-first-order path associated with Langmuir- Hinshelwood (L-H) kinetic model. The values of intrinsic coefficient (kr) and adsorption constant (ks) were found to be 0.22 mg L^-1 min^-1 and 0.48 L mg^-1 resp. Trapping experiments revealed peroxide radical (O^–·₂ radicals) as primary reactive oxygen species (ROS) for 98% degradation of MB under visible solar radiation. In the experiment, the researchers used many compounds, for example, 3,7-Bis(dimethylamino)phenothiazin-5-ium chloride (cas: 61-73-4Related Products of 61-73-4).

3,7-Bis(dimethylamino)phenothiazin-5-ium chloride (cas: 61-73-4) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids.While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Related Products of 61-73-4

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Imidazotriazines: Spleen Tyrosine Kinase (Syk) Inhibitors Identified by Free-Energy Perturbation (FEP) was written by Lovering, Frank;Aevazelis, Cristina;Chang, Jeanne;Dehnhardt, Christoph;Fitz, Lori;Han, Seungil;Janz, Kristin;Lee, Julie;Kaila, Neelu;McDonald, Joseph;Moore, William;Moretto, Alessandro;Papaioannou, Nikolaos;Richard, David;Ryan, Mark S.;Wan, Zhao-Kui;Thorarensen, Atli. And the article was included in ChemMedChem in 2016.Name: 3-Cyanobenzoyl chloride This article mentions the following:

There has been significant interest in spleen tyrosine kinase (Syk) owing to its role in a number of disease states, including autoimmunity, inflammation, and cancer. Ongoing therapeutic programs have resulted in several compounds that are now in clin. use. Herein the authors report the optimization of the imidazopyrazine core scaffold of Syk inhibitors through the use of empirical and computational approaches. Free-energy perturbation (FEP) methods with MCPRO+ were undertaken to calculate the relative binding free energies for several alternate scaffolds. FEP was first applied retrospectively to determine if there is any predictive value; this resulted in 12 of 13 transformations being predicted in a directionally correct manner. FEP was then applied in a prospective manner to evaluate 17 potential targets, resulting in the realization of imidazotriazine I, which shows a tenfold improvement in activity relative to the parent compound and no increase in atom count. Optimization of I led to compounds with nanomolar cellular activity. In the experiment, the researchers used many compounds, for example, 3-Cyanobenzoyl chloride (cas: 1711-11-1Name: 3-Cyanobenzoyl chloride).

3-Cyanobenzoyl chloride (cas: 1711-11-1) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Name: 3-Cyanobenzoyl chloride

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

SAR evolution and discovery of benzenesulfonyl matrinanes as a novel class of potential coxsakievirus inhibitors was written by Tang, Sheng;Li, Yu-Huan;Cheng, Xin-Yue;Li, Ying-Hong;Wang, Hui-Qiang;Kong, Lan-Ying;Zhang, Xin;Jiang, Jian-Dong;Song, Dan-Qing. And the article was included in Future Medicinal Chemistry in 2016.Formula: C7H4ClF3O2S This article mentions the following:

Materials & methods: Fifty-one novel 12N-substituted matrinic acid derivatives were synthesized and evaluated for their anti-coxsackievirus B3 activities. Results: Structure-activity relationship studies revealed that the 11-side chain could be determinant for the selectivity index by adjusting overall lipophilicity, and 11-butane was the best one for both potency and druggability. The optimized 35d showed the broad-spectrum anti-coxsackieviruse effects, an excellent pharmacokinetics and a good safety profile. More importantly, it displayed a potential effect for the pleconaril-resistant coxsackievirus B3 as well. Its mode of action is targeting on the viral transcription and translation stage, a different mechanism from that of pleconaril. Conclusion: Thus, we considered that 35d is a promising anti-enteroviral candidate for the treatment of various diseases infected with coxsackieviruses. In the experiment, the researchers used many compounds, for example, 3-(Trifluoromethyl)benzene-1-sulfonyl chloride (cas: 777-44-6Formula: C7H4ClF3O2S).

3-(Trifluoromethyl)benzene-1-sulfonyl chloride (cas: 777-44-6) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Formula: C7H4ClF3O2S

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Radiotracer stereochemistry affects substrate affinity and kinetics for improved imaging of system x_C^– in tumors was written by Greenwood, Hannah E.;Edwards, Richard;Koglin, Norman;Berndt, Mathias;Baark, Friedrich;Kim, Jana;Firth, George;Khalil, Eman;Mueller, Andre;Witney, Timothy H.. And the article was included in Theranostics in 2022.Recommanded Product: 76-83-5 This article mentions the following:

Amino acid utilization is perturbed in cancer cells, which rewire their metabolism to support cell survival and proliferation. This metabolic reprogramming can be exploited for diagnostic purposes through positron emission tomog. imaging of fluorine-18 labeled amino acids. Despite its promise, little is known regarding transporter-recognition of non-natural amino acid stereoisomers or their utility for cancer imaging. We report here the synthesis and in vivo characterization of a radiolabeled amino acid (R)-4-(3-¹⁸F-fluoropropyl)-L-glutamate ([¹⁸F]FRPG) and compared its tumor imaging properties to the 4S-isomer, [¹⁸F]FSPG. [¹⁸F]FRPG and [¹⁸F]FSPG uptake was assessed in H460 lung cancer cells, with efflux measured 30 min after removal of exogenous activity. Specificity of [¹⁸F]FRPG for system x_C^– was further examined following transporter inhibition and blocking studies with system x_C^– substrates. [¹⁸F]FRPG and [18F]FSPG pharmacokinetics was next quantified in mice bearing s.c. A549, H460, VCAP and PC3 tumors, with mice bearing A549 tumors imaged by PET/CT. To better-understand differential tumor retention, radiometabolite anal. was performed on tissue and blood samples after imaging. Next, [¹⁸F]FRPG and [¹⁸F]FSPG retention in lipopolysaccharide-treated lungs were compared to an orthotopic H460 lung cancer model. Finally, the sensitivity of [¹⁸F]FRPG to manipulation of the redox environment was examined in cell and in vivo models. [¹⁸F]FRPG was specifically transported across the plasma membrane by the cystine/glutamate antiporter system x_C^– and retained at high levels in multiple tumor models. Conversely, [¹⁸F]FRPG was rapidly extracted from the blood and cleared from tissues with low system x_C^– expression. Due to its favorable imaging properties, tumor-to-blood ratios ≥10 were achieved with [¹⁸F]FRPG, which were either equal to or greater than [¹⁸F]FSPG. In addition, [¹⁸F]FRPG retention in orthotopic lung tumors with high system x_C^– expression was 2.5-fold higher than inflamed tissue, allowing for clear tumor visualization. In vivo, [¹⁸F]FRPG and [¹⁸F]FSPG were metabolized to a single species, with [18F]FRPG showing a higher percentage of parent radiotracer in tumors compared to [¹⁸F]FSPG. [¹⁸F]FRPG was sensitive to redox manipulations and tumor retention was reduced following treatment with liposomal doxorubicin in mice bearing ovarian tumors. Given the fast clearance and low background retention of [¹⁸F]FRPG throughout the body, this radiotracer holds promise for the imaging of system x_C^– activity and treatment response monitoring in tumors of the thorax, abdomen, and head and neck. [¹⁸F]FRPG PET imaging provides a sensitive noninvasive measure of system x_C^– and excellent properties for cancer imaging. In the experiment, the researchers used many compounds, for example, (Chloromethanetriyl)tribenzene (cas: 76-83-5Recommanded Product: 76-83-5).

(Chloromethanetriyl)tribenzene (cas: 76-83-5) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Recommanded Product: 76-83-5

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthesis and 5-HT-3 receptor binding activity of 5-[¹²⁵I]iodo-2,3-dimethoxy-N-(1-azabicyclo[2.2.2]oct-3-yl)benzamide and its 5-halogen-2-alkoxyl homologs was written by De Paulis, T.;Hewlett, W. A.;Schmidt, D. E.;Mason, N. S.;Trivedi, B. L.;Ebert, M. H.. And the article was included in European Journal of Medicinal Chemistry in 1997.Category: chlorides-buliding-blocks This article mentions the following:

(S)-5-Iodo-2,3-dimethoxy-N-(1-azabicyclo[2.2.2]oct-3-yl)benzamide (MIZAC) was prepared from 5-iodo-2,3-dimethoxybenzoyl chloride and (S)-3-aminoquinuclidine. [¹²⁵I]iodide-stannylation of its corresponding 5-tri-n-butyltin derivative gave [¹²⁵I]-MIZAC at 1800 Ci/mmol. Binding of [¹²⁵I]-MIZAC in rat entorhinal cortex revealed a K_D of 1.37 nM. A series of racemic 2-O-alkyl derivatives of MIZAC were prepared and 5-HT-3 receptor affinities were determined by inhibition of [¹²⁵I]-MIZAC binding. Optimal affinity for the receptor was obtained with small, electron-withdrawing substituents in the aromatic 5-position and with bulky substituents in the 3-position. [¹²⁵I]-MIZAC is a selective radioligand useful for in vitro identification of the 5-HT-3 receptor. QSAR data suggest that potential candidates for SPECT and PET studies might be found in sterically bulky haloalkoxyl 5-chloro homologs of MIZAC. In the experiment, the researchers used many compounds, for example, 5-Chloro-2-methoxybenzoic acid (cas: 3438-16-2Category: chlorides-buliding-blocks).

5-Chloro-2-methoxybenzoic acid (cas: 3438-16-2) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Category: chlorides-buliding-blocks

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Diarylketone Ketoreductase Screen and Synthesis Demonstration to Access mGlu2 Receptor Potentiators was written by Magnus, Nicholas A.;Coffey, D. Scott;DeBaillie, Amy C.;Jones, Chauncey D.;Kaluzna, Iwona A.;Kambourakis, Spiros;Pu, Yangwei J.;Wang, Lin;Wepsiec, James P.. And the article was included in Organic Process Research & Development in 2011.Electric Literature of C8H4ClNO This article mentions the following:

This communication describes proof of concept for an enantioselective enzyme-based synthesis of diarylmethanol (S)-1 to access mGlu2 receptor potentiators. A ketoreductase (KRED) screen was applied to benzophenone 8 to afford chiral diarylmethanol (S)-9, which is a useful intermediate for the preparation of chiral diarylmethanol (S)-1. In addition, a more practical synthesis of benzophenone 8 was demonstrated utilizing Friedel-Crafts acylation and radical bromination chem. In the experiment, the researchers used many compounds, for example, 3-Cyanobenzoyl chloride (cas: 1711-11-1Electric Literature of C8H4ClNO).

3-Cyanobenzoyl chloride (cas: 1711-11-1) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin.While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Electric Literature of C8H4ClNO

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics