Category: chlorides-buliding-blocks

Ali, Shaukat; van Mil, Harald G. J.; Richardson, Michael K. published the artcile< Large-scale assessment of the zebrafish embryo as a possible predictive model in toxicity testing>, Safety of 2-(Bis(2-chloroethyl)amino)-1,3,2-oxazaphosphinane 2-oxide hydrate, the main research area is zebrafish embryo drug toxicity.

Background: In the drug discovery pipeline, safety pharmacol. is a major issue. The zebrafish has been proposed as a model that can bridge the gap in this field between cell assays (which are cost-effective, but low in data content) and rodent assays (which are high in data content, but less cost-efficient). However, zebrafish assays are only likely to be useful if they can be shown to have high predictive power. We examined this issue by assaying 60 water-soluble compounds representing a range of chem. classes and toxicol. mechanisms. Methodol./Principal Findings: Over 20,000 wild-type zebrafish embryos (including controls) were cultured individually in defined buffer in 96-well plates. Embryos were exposed for a 96 h period starting at 24 h post fertilization. A logarithmic concentration series was used for range-finding, followed by a narrower geometric series for LC50 determination Zebrafish embryo LC50 (log mmol/L), and published data on rodent LD50 (log mmol/kg), were found to be strongly correlated (using Kendall’s rank correlation tau and Pearson’s product-moment correlation). The slope of the regression line for the full set of compounds was 0.73403. However, we found that the slope was strongly influenced by compound class. Thus, while most compounds had a similar toxicity level in both species, some compounds were markedly more toxic in zebrafish than in rodents, or vice versa. Conclusions: For the substances examined here, in aggregate, the zebrafish embryo model has good predictivity for toxicity in rodents. However, the correlation between zebrafish and rodent toxicity varies considerably between individual compounds and compound class. We discuss the strengths and limitations of the zebrafish model in light of these findings.

PLoS One published new progress about Alkaloids Role: ADV (Adverse Effect, Including Toxicity), BIOL (Biological Study). 6055-19-2 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H17Cl2N2O3P, Safety of 2-(Bis(2-chloroethyl)amino)-1,3,2-oxazaphosphinane 2-oxide hydrate.

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

Hannout, I. B.; El-Sharief, A. M. S.; Ismail, I. M.; Mohamed, Y. A.; Ammar, Y. A.; Zahran, M. A. published the artcile< Some alkylated and chlorinated benzenesulfonamides with expected insecticidal and bactericidal activities>, Computed Properties of 42413-03-6, the main research area is benzenesulfonamide chloro preparation bactericide; chlorobenzenesulfonamide preparation bactericide.

Benzenesulfonic acid derivatives I (R1 = alkylamino, cyclohexylamino, substituted anilino, furfurylamino, pyrimidinylamino, substituted phenoxy) and II (R2 = cyclohexylamino, substituted anilino, pyridylamino, piperidino, morpholino) were prepared from the resp. benzenesulfonyl chlorides. I and II exhibited bactericidal activity.

Egyptian Journal of Pharmaceutical Sciences published new progress about 42413-03-6. 42413-03-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H6Cl2O2S, Computed Properties of 42413-03-6.

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

Bradley, D. C.; Prevedorou-Demas, C. published the artcile< Metal oxide trialkylsilyl oxide polymers. II. Zirconium oxide trimethylsilyl oxide polymers>, Synthetic Route of 16799-05-6, the main research area is .

The partial hydrolysis of tetrakis(trimethylsilyloxy)zirconium in dioxane has been studied. Solid polymeric [ZrOx(OSiMe3)4-2x]n, which were soluble in organic solvents, were obtained. The variation of the number average degree of polymerization, n, as a function of the degree of hydrolysis, x, was analyzed in terms of structural models. At 150° in vacuo, the polymers disproportionated to tetrakis(trimethylsilyloxy)zirconium and more highly condensed polymers [ZrOy(OSiMe3)(4-2y)]m, where y > x, and m > n.

Journal of the Chemical Society published new progress about Hydrolysis. 16799-05-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H8BrCl, Synthetic Route of 16799-05-6.

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

Joseph, Alex; Pai, Aravinda; Srinivasan, K. K.; Kedar, Tukaram; Thomas, Angel Treasa; Jessy, E. M.; Singla, Rajeev K. published the artcile< Synthesis and anticancer activity of some novel 3-(1,3,4-thiadiazol-2-yl)-quinazolin-4(3H)-ones>, Synthetic Route of 70057-67-9, the main research area is thiadiazolylquinazolinone preparation anticancer; quinazolinone thiadiazolyl preparation anticancer.

The synthesis of various thiadiazole-substituted quinazolin-4(3H)-ones was reported. Novel 3-(1,3,4-thiadiazol-2-yl)quinazolin-4(3H)-ones were synthesized by reaction of 5-alkyl/aryl-1,3,4-thiadiazol-2-amines with 2-methyl/phenyl-4H-1,3-benzoxazin-4-ones in the presence of pyridine. All the synthesized compounds were characterized by spectra and phys. data. In vitro anticancer activity of all the synthesized compounds was determined by MTT assay on HeLa cells. Most active compounds from in vitro studies were further evaluated for in vivo activity on Liquid tumor (Ehrlich’s Ascites Carcinoma; EAC)-induced mice. The anticancer activity of one of the compounds was comparable to that of cisplatin against HeLa cells, and this compound was also effective in preventing the growth of tumor in mice as indicated by decrease in progressive gain in body weight as well as increase in life span.

Orbital: The Electronic Journal of Chemistry published new progress about Antitumor agents. 70057-67-9 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H6ClN3S, Synthetic Route of 70057-67-9.

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

Wang, Yonghui; Yang, Ting; Liu, Qian; Ma, Yingli; Yang, Liuqing; Zhou, Ling; Xiang, Zhijun; Cheng, Ziqiang; Lu, Sijie; Orband-Miller, Lisa A.; Zhang, Wei; Wu, Qianqian; Zhang, Kathleen; Li, Yi; Xiang, Jia-Ning; Elliott, John D.; Leung, Stewart; Ren, Feng; Lin, Xichen published the artcile< Discovery of N-(4-aryl-5-aryloxy-thiazol-2-yl)-amides as potent RORγt inverse agonists>, Application In Synthesis of 35852-58-5, the main research area is arylaryloxy thiazolyl amide preparation RORt inverse agonist immunomodulator; Crystal structure; RORγt inverse agonists; Th17 cell differentiation; Thiazole ether amides.

A novel series of N-(4-aryl-5-aryloxy-thiazol-2-yl)-amides as RORγt inverse agonists was discovered. Binding mode anal. of a RORγt partial agonist (2c) revealed by co-crystal structure in RORγt LBD suggests that the inverse agonists do not directly interfere with the interaction between H12 and the RORγt LBD. Detailed SAR exploration led to identification of potent RORγt inverse agonists such as 3m with a pIC50 of 8.0. Selected compounds in the series showed reasonable activity in Th17 cell differentiation assay as well as low intrinsic clearance in mouse liver microsomes.

Bioorganic & Medicinal Chemistry published new progress about Cell differentiation inducers. 35852-58-5 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H4ClF3O, Application In Synthesis of 35852-58-5.

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

Komoto, Chiho; Nakamura, Tsutomu; Ohmoto, Nobuko; Kobayashi, Hironao; Yagami, Tatsurou; Nishiguchi, Kohshi; Iwaki, Koichi; Kuwahara, Akiko; Yamamori, Motohiro; Okamura, Noboru; Okumura, Katsuhiko; Sakaeda, Toshiyuki published the artcile< Three-dimensional, but not two-dimensional, culture results in tumor growth enhancement after exposure to anticancer drugs>, Application In Synthesis of 6055-19-2, the main research area is collagen gel droplet embedded culture drug sensitivity test chemosensitivity; cervical carcinoma WST1 assay anticancer.

Previously, we have adapted a recently developed three-dimensional chemosensitivity test, the collagen gel droplet embedded culture drug sensitivity test (CD-DST), for evaluation of chemosensitivity of 12 anticancer drugs against colorectal adenocarcinoma, and surprisingly, it was found that tumor growth enhancement was occasionally observed even after exposure to anticancer drugs. In this study, the CD-DST was applied for human cervical carcinoma cell line HeLa-Ohio (HeLa) cells and its MDR1/P-glycoprotein-overexpressing subline, Hvr100-6 cells, and 12 anticancer drugs were assessed in terms of chemosensitivity and deterioration of tumor, and the results were compared with those by two-dimensional WST-1 assay. Growth enhancement was observed in Hvr100-6 cells, not in HeLa cells, for mitomycin C with the ratio of total volume of colonies in the treated group to that in the untreated group (T/C%) of 135.0%, doxorubicin with T/C% of 162.5% and cyclophosphamide with T/C% of 122.0%, and this was not observed in WST-1 assay. Multidrug resistance was detected both for CD-DST and WST-1 assay. The values of T/C% in CD-DST were comparable with or higher than those of the survival fraction (%) in WST-1 assay, and modification of WST-1 assay procedure gave similar results, suggesting a higher resistance in three-dimensional than in two-dimensional culture. Further investigations should be addressed to the association of MDR1/P-glycoprotein with tumor growth enhancement.

Kobe Journal of Medical Sciences published new progress about Antitumor agents. 6055-19-2 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H17Cl2N2O3P, Application In Synthesis of 6055-19-2.

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

Ambala, Srinivas; Singh, Rohit; Singh, Maninder; Cham, Pankaj Singh; Gupta, Ria; Munagala, Gurunadham; Yempalla, Kushalava Reddy; Vishwakarma, Ram A.; Singh, Parvinder Pal published the artcile< Metal-free, room temperature, acid-K2S2O8 mediated method for the nitration of olefins: an easy approach for the synthesis of nitroolefins>, Application In Synthesis of 5153-70-8, the main research area is alkene sodium nitrate potassium persulfate TFA promoter diastereoselective nitration; nitroalkene preparation.

A simple, room temperature method for the nitration of olefins by using inexpensive sodium nitrite as a source of nitro groups in the presence of trifluoroacetic acid (TFA) and potassium persulfate (K2S2O8) under an open atm. Styrenes and mono-substituted olefins give stereo-selective corresponding E-nitroolefins under optimized conditions, however, 1,1-bisubstituted olefins give a mixture of E- and Z-nitroolefins. The optimized conditions work well with electron-donating, electron-withdrawing, un-substituted and heterocyclic styrenes and mono-substituted olefins and gave corresponding nitroolefins with good to excellent yields.

RSC Advances published new progress about Alkenes, nitro Role: SPN (Synthetic Preparation), PREP (Preparation). 5153-70-8 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H6ClNO2, Application In Synthesis of 5153-70-8.

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

Harrill, Joshua A.; Freudenrich, Theresa; Wallace, Kathleen; Ball, Kenneth; Shafer, Timothy J.; Mundy, William R. published the artcile< Testing for developmental neurotoxicity using a battery of in vitro assays for key cellular events in neurodevelopment>, Formula: C7H17Cl2N2O3P, the main research area is primary cortical cell developmental neurotoxicity battery; Assay suite; Concentration-response; Developmental neurotoxicity; High content imaging; In vitro models; Toxicity screening.

Medium- to high-throughput in vitro assays that recapitulate the critical processes of nervous system development have been proposed as a means to facilitate rapid testing and identification of chems. which may affect brain development. In vivo neurodevelopment is a complex progression of distinct cellular processes. Therefore, batteries of in vitro assays that model and quantify effects on a variety of neurodevelopmental processes have the potential to identify chems. which may affect brain development at different developmental stages. In the present study, the results of concentration-response screening of 67 reference chems. in a battery of high content imaging and microplate reader-based assays that evaluate neural progenitor cell proliferation, neural proginitor cell apoptosis, neurite initiation/outgrowth, neurite maturation and synaptogenesis are summarized and compared. The assay battery had a high degree of combined sensitivity (87%) for categorizing chems. known to affect neurodevelopment as active and a moderate degree of combined specificity (71%) for categorizing chems. not associated with affects on neurodevelopment as inactive. The combined sensitivity of the assay battery was higher compared to any individual assay while the combined specificity of the assay battery was lower compared to any individual assay. When selectivity of effects for a neurodevelopmental endpoint as compared to general cytotoxicity was taken into account, the combined sensitivity of the assay battery decreased (68%) while the combined specificity increased (93%). The identity and potency of chems. identified as active varied across the assay battery, underscoring the need for use of a combination of diverse in vitro models to comprehensively screen chems. and identify those which potentially affect neurodevelopment. Overall, these data indicate that a battery of assays which address many different processes in nervous system development may be used to identify potential developmental neurotoxicants and to distinguish specific from generalized cytotoxic effects with a high degree of success.

Toxicology and Applied Pharmacology published new progress about Apoptosis. 6055-19-2 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H17Cl2N2O3P, Formula: C7H17Cl2N2O3P.

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

Robbins, Daniel W.; Hartwig, John F. published the artcile< A C-H Borylation Approach to Suzuki-Miyaura Coupling of Typically Unstable 2-Heteroaryl and Polyfluorophenyl Boronates>, Recommanded Product: 1-Chloro-3,5-difluorobenzene, the main research area is borylation Suzuki Miyaura coupling iridium palladium catalyst; heteroaryl polyfluorophenyl boronate preparation Suzuki Miyaura coupling.

A method for the synthesis of biaryls and heterobiaryls from arenes and haloarenes without the intermediacy of unstable boronic acids is described. Pinacol boronate esters that are analogous to unstable boronic acids are formed in high yield by iridium-catalyzed C-H borylation of heteroarenes and fluoroarenes. These boronates are stable in the solid state or in solution and can be generated and used in situ. They couple with aryl halides in the presence of simple palladium catalysts, providing a convenient route to biaryl and heteroaryl products that have been challenging to prepare via boronic acids.

Organic Letters published new progress about Aromatic hydrocarbons Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 1435-43-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H3ClF2, Recommanded Product: 1-Chloro-3,5-difluorobenzene.

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