Month: December 2022

Lenca, Nicole published the artcileEstimation of descriptors for hydrogen-bonding compounds from chromatographic and liquid-liquid partition measurements, Application In Synthesis of 122-20-3, the publication is Journal of Chromatography A (2017), 13-22, database is CAplus and MEDLINE.

Retention factors obtained by gas chromatog. and reversed-phase liquid chromatog. on varied columns and partition constants in different liquid-liquid partition systems were used to estimate WSU descriptor values for 36 anilines and N-heterocyclic compounds, 13 amides and related compounds, and 45 phenols and alcs. These compounds are suitable for use as calibration compounds to characterize separation systems covering the descriptor space E = 0.2-3, S = 0.4-2.1, A = 0-1.5, B = 0.1-1.5, L = 2.5-10.0 and V = 0.5-2.2. Hydrogen-bonding properties are discussed in terms of structure, the possibility of induction effects, intramol. hydrogen bonding and steric factors for anilines, amides, phenols and alcs. The relation between these parameters and observed descriptor values are difficult to predict from structure but facilitate improving the general occupancy of the descriptor space by creating incremental changes in hydrogen-bonding properties. It is verified that the compounds included in this study can be merged with an existing database of compounds recommended for characterizing separation systems.

Journal of Chromatography A published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C9H21NO3, Application In Synthesis of 122-20-3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Rodiansono published the artcileUnravelling the one-pot conversion of biomass-derived furfural and levulinic acid to 1,4-pentanediol catalysed by supported Raney Ni-Sn alloy catalysts, Computed Properties of 111-29-5, the publication is RSC Advances (2022), 12(1), 241-250, database is CAplus and MEDLINE.

Bimetallic Ni-Sn alloys have been recognized as promising catalysts for the transformation of furanic compounds and their derivatives into valuable chems. Herein, we report the utilization of a supported bimetallic RANEY nickel-tin alloy supported on aluminum hydroxide (RNi-Sn(x)/AlOH; x is Ni/Sn molar ratio) catalysts for the one-pot conversion of biomass-derived furfural and levulinic acid to 1,4-pentanediol (1,4-PeD). The as prepared RNi-Sn(1.4)/AlOH catalyst exhibited the highest yield of 1,4-PeD (78%). The reduction of RNi-Sn(x)/AlOH with H₂ at 673-873 K for 1.5 h resulted in the formation of Ni-Sn alloy phases (e.g., Ni₃Sn and Ni₃Sn₂) and caused the transformation of aluminum hydroxide (AlOH) to amorphous alumina (AA). The RNi-Sn(1.4)/AA 673 K/H₂ catalyst contained a Ni₃Sn₂ alloy as the major phase, which exhibited the best yield of 1,4-PeD from furfural (87%) at 433 K, H₂ 3.0 MPa for 12 h and from levulinic acid (up to 90%) at 503 K, H₂ 4.0 MPa, for 12 h. Supported RANEY Ni-Sn(1.5)/AC and three types of supported Ni-Sn(1.5) alloy (e.g., Ni-Sn(1.5)/AC, Ni-Sn(1.5)/c-AlOH, and Ni-Sn(1.5)/γ-Al₂O₃) catalysts afforded high yields of 1,4-PeD (65-87%) both from furfural and levulinic acid under the optimized reaction conditions.

RSC Advances published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C5H12O2, Computed Properties of 111-29-5.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Schonberg, Alexander published the artcileAction of Grignard reagents. II. Replacement of the oxygen atoms of ketones by two hydrocarbon radicals by the action of Grignard reagents, Recommanded Product: 9-Phenyl-9H-xanthen-9-ol, the publication is Journal of the Chemical Society (1946), 609-10, database is CAplus.

cf. C.A. 39, 65.1. PhMgBr (from 15 g. PhBr) and 5 g. xanthone in 40 cc. ether and 30 cc. C₆H₆, refluxed 5 hrs., allowed to stand overnight, and the residue extracted repeatedly with petr. ether, give, in addition to the main product [phenylxanthydrol (I)], 0.5 g. of 9,9-diphenylxanthene [Ullmann and Engi, Ber. 37, 2367(1904), reported only I]. Similarly, o-MeC₆H₄MgBr yields 9,9-di-o-tolylxanthene, m. 119°. 2,3,6,5-Dithianaphtheno-1,4-thiapyrone (II)(Part I) and PhCH₂MgCl in ether-C₆H₆, refluxed 5 hrs. and the product decomposed with dilute HCl, give 4,4-dibenzyl-2,3,6,5-dithianaphtheno-1,4-thiapyran (III), m. 176°; it does not react with Ac₂O; the concentrated H₂SO₄ solution is yellow. In another experiment the product was 4-hydroxy-4-benzyl-2,3,6,5-dithianaphtheno-1,4-thiapyran, light yellow, m. 220°; refluxed with Ac₂O for 3 hrs., it yields the 4-benzylidene derivative, light yellow, m. 244°. II and PhMgBr give the 4,4-diphenyl homolog of III, yellow, m. 235°, and m-MeC₆H₄MgBr yields the 4,4-ai-m-tolyl homolog, yellow, m. 219°. (p-MeC₆H₄)₂O (10 g.), 25 g. (COCl)₂, 10 g. AlCl₃ and 75 cc. CS₂ give 80% of 2,7-tlimethylxanthone.

Journal of the Chemical Society published new progress about 596-38-3. 596-38-3 belongs to alcohols-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Benzene,Alcohol, name is 9-Phenyl-9H-xanthen-9-ol, and the molecular formula is C19H14O2, Recommanded Product: 9-Phenyl-9H-xanthen-9-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Jackson, Mark R. published the artcileMesothelioma Cells Depend on the Antiapoptotic Protein Bcl-xL for Survival and Are Sensitized to Ionizing Radiation by BH3-Mimetics, Computed Properties of 518303-20-3, the publication is International Journal of Radiation Oncology, Biology, Physics (2020), 106(4), 867-877, database is CAplus and MEDLINE.

The incidence of mesothelioma continues to rise and prognosis remains dismal owing to resistance to conventional therapies and few novel treatment options. Failure to activate apoptotic cell death is a resistance mechanism that may be overcome using BH3-mimetic drugs. We investigated the role of antiapoptotic proteins in the radioresistance of mesothelioma, identifying clin. relevant targets for radiosensitization and evaluating the activity of BH3-mimetics alone and in combination with radiation therapy in preclin. models. Mesothelioma cell lines 211H, H2052, and H226 exposed to BH3-mimetics demonstrated Bcl-xL dependence that correlated with protein expression and was confirmed by genetic knockdown. The Bcl-xL inhibitor A1331852 exhibited cytotoxic (EC₅₀, 0.13-1.42μmol/L) and radiosensitizing activities (sensitizer enhancement ratios, 1.3-1.8). Cytotoxicity was associated with induction of mitochondrial outer membrane permeabilization and caspase-3/7 activation. Efficacy was maintained in a 3-dimensional model in which combination therapy completely eradicated mesothelioma spheroids. Clin. applicability was confirmed by immunohistochem. anal. of Bcl-2 proteins in patient samples and radiosensitizing activity of A1331852 in primary patient-derived mesothelioma cells. Mesothelioma cells exhibit addiction to the antiapoptotic protein Bcl-xL, and their intrinsic radioresistance can be overcome by small mol. inhibition of this novel therapeutic target.

International Journal of Radiation Oncology, Biology, Physics published new progress about 518303-20-3. 518303-20-3 belongs to alcohols-buliding-blocks, auxiliary class Apoptosis,Bcl-2, name is 2-((4-(4-Bromophenylsulfonamido)-1-hydroxynaphthalen-2-yl)thio)acetic acid, and the molecular formula is C18H14BrNO5S2, Computed Properties of 518303-20-3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Zaitsu, Kei published the artcileMetabolomics and Data-Driven Bioinformatics Revealed Key Maternal Metabolites Related to Fetal Lethality via Di(2-ethylhexyl)phthalate Exposure in Pregnant Mice, Recommanded Product: 3-Hydroxyphenylacetic acid, the publication is ACS Omega (2022), 7(27), 23717-23726, database is CAplus and MEDLINE.

We performed serum metabolome anal. of di(2-ethylhexyl)phthalate (DEHP)-exposed and control pregnant mice. Pregnant mice (n = 5) were fed a DEHP-containing diet (0.1% or 0.2% DEHP) or a normal diet (control) from gestational days 0-18. After maternal exposure to 0.2% DEHP there were no surviving fetuses, indicating its strong fetal lethality. There were no significant differences in the numbers of fetuses and placentas between the 0.1% DEHP and control groups, although fetal viability differed significantly between them, suggesting that maternal exposure to 0.1% DEHP could inhibit fetal growth. Metabolomics successfully detected 169 metabolites in serum. Principal component anal. (PCA) demonstrated that the three groups were clearly separated on PCA score plots. The biol. interpretation of PC1 was fetal lethality, whereas PC2 meant metabolic alteration of pregnant mice via DEHP exposure without fetal lethality. In particular, the first component was significantly correlated with fetal viability, demonstrating that maternal metabolome changes via DEHP exposure were strongly related to fetal lethality. Levels of some amino acids were significantly increased in the DEHP-exposed groups, whereas those of some fatty acids, nicotinic acid, and 1,5-anhydroglucitol were significantly decreased in the DEHP groups. DEHP-induced increases in glycine levels could cause fetal neurol. disorders, and decreases in nicotinic acid could inhibit fetal growth. In addition, a machine-learning Random forest could determine 16 potential biomarkers of DEHP exposure, and data-driven network anal. revealed that nicotinic acid was the most influential hub metabolite in the metabolic network. These findings will be useful for understanding the effects of DEHP on the maternal metabolome in pregnancy and their relationship to fetal lethality.

ACS Omega published new progress about 621-37-4. 621-37-4 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Phenol,Natural product, name is 3-Hydroxyphenylacetic acid, and the molecular formula is C4Br2N2O4S, Recommanded Product: 3-Hydroxyphenylacetic acid.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Ogawa, Shigesaburo published the artcileGlass transition behavior of octyl β-D-glucoside and octyl β-D-thioglucoside/water binary mixtures, Category: alcohols-buliding-blocks, the publication is Carbohydrate Research (2010), 345(17), 2534-2541, database is CAplus and MEDLINE.

The lyotropic behavior and glass-forming properties of octyl β-D-glucoside (C8Glu) and octyl β-D-thioglucoside (C8SGlu)/water binary mixtures were evaluated using differential scanning calorimetry and polarizing optical microscopy. The mixture formed a glass in the supercooling state of liquid crystalline phases such as cubic, lamellar, and smectic. The glass transition temperature (T_g) of the mixture was strongly dependent on solute concentration, with a higher concentration correlating with a higher T_g. The exptl. T_g was consistent with the predicted value calculated using the Couchman-Karasz equation in both the C8Glu and C8SGlu/water mixtures The change of heat capacity at T_g showed the two bending points under variation of concentrations And the highest temperature of phase transition from lamellar to isotropic solution was observed at around 50% molar concentration It was expected that non-percolated state of water existed in extremely higher concentration ranges.

Carbohydrate Research published new progress about 85618-21-9. 85618-21-9 belongs to alcohols-buliding-blocks, auxiliary class Tetrahydropyran,Chiral,sulfides,Alcohol, name is (2R,3S,4S,5R,6S)-2-(Hydroxymethyl)-6-(octylthio)tetrahydro-2H-pyran-3,4,5-triol, and the molecular formula is C14H28O5S, Category: alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Erabi, Tatsuo published the artcile9-Phenylxanthen-9-ylium and 9-phenylthioxanthen-9-ylium ions: Comparison of o- and p-substitutions in the 9-phenyl group by cyclic voltammetry and visible spectra, Recommanded Product: 9-Phenyl-9H-xanthen-9-ol, the publication is Bulletin of the Chemical Society of Japan (2002), 75(6), 1325-1332, database is CAplus.

9-Arylxanthen-9-ylium and 9-arylthioxanthen-9-ylium perchlorates I [X = O, S; R = Ph, 2,4,6-(MeO)₃C₆H₂, 2,6-(MeO)₂C₆H₃, 2-MeOC₆H₄, 4-MeOC₆H₄, etc.] were prepared by the reactions of the corresponding 9-arylxanthen-9-ols or 9-arylthioxanthen-9-ols II with HClO₄. The LUMO and HOMO levels of I were estimated from the redox potential (E₀) in cyclic voltammetry and λ_max in the UV-visible spectra measured for a 1,2-dichloroethane solution, and were compared with those of 9-aryl-1,8-dimethoxyxanthen-9-ylium ions III. The studies showed that (1) both the LUMO and HOMO levels varied almost in the same order of substituent on the 9-Ph group; (2) the MeO-group on the 9-Ph group was more effective to raise both the HOMO and LUMO levels than the Me-group; (3) the HOMO levels of I were more sensitive than the LUMO levels to the change in the 9-aryl group; (4) p-substitution by MeO- or Me-groups was more effective to raise the HOMO and LUMO levels than o-substitution; (5) the presence of two o-MeO groups was more effective to raise the HOMO and LUMO levels than one o-MeO group; (6) m-bromination of 9-aryl group in I [X = O, S; R = 2,6-(MeO)₂C₆H₃] greatly lowered both LUMO and HOMO levels; (7) both the HOMO and LUMO levels of III [R = Ph, 2,6-(MeO)₂C₆H₃] were higher than those of the resp. I [X = O; R = Ph, 2,6-(MeO)₂C₆H₃]; (8) the LUMO level of I [X = O, R = 2,6-(MeO)₂C₆H₃] was higher than that of III (R = Ph), the isomer.

Bulletin of the Chemical Society of Japan published new progress about 596-38-3. 596-38-3 belongs to alcohols-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Benzene,Alcohol, name is 9-Phenyl-9H-xanthen-9-ol, and the molecular formula is C19H14O2, Recommanded Product: 9-Phenyl-9H-xanthen-9-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Sastry, C. S. P. published the artcileSpectrophotometric determination of some anthelmintics and antiamebic agents with 3-methyl-2-benzothiazolinone hydrazone hydrochloride, Formula: C28H29NO4, the publication is Pharmazie (1988), 43(5), 361, database is CAplus and MEDLINE.

A spectrophotometric method for determination of anthelmintics and antiamebic drugs using 3-methyl-2-benzothiazolinone hydrazone (I) as a chromogenic agent was developed. The maximum absorbance (λ_max) for the drug-I systems and Beer’s law limits for 8 drugs studied are presented. The relative standard deviations were 0.66-1.26%. The method is simple and sensitive with reasonable precision and accuracy.

Pharmazie published new progress about 3818-50-6. 3818-50-6 belongs to alcohols-buliding-blocks, auxiliary class Anti-infection,Antiparasitic, name is N-Benzyl-N,N-dimethyl-2-phenoxyethanaminium 3-hydroxy-2-naphthoate, and the molecular formula is C28H29NO4, Formula: C28H29NO4.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Sastry, C. S. P. published the artcileExtractive spectrophotometric determination of some anthelmintics using Fast green FCF or Orange II, SDS of cas: 3818-50-6, the publication is Indian Journal of Pharmaceutical Sciences (1988), 50(2), 140-2, database is CAplus.

Two sensitive methods for the determination of diethylcarbamazine citrate, bephenium hydroxynaphthoate, tetramisole and levamisole based on the formation of colored complexes of the drug with reagents such as Fast Green FCF at pH 5.0 or Orange II in presence of 0.1N HCl are described in bulk samples and pharmaceutical preparations The ion-pair complexes formed are quant. extracted into CHCl₃ under the exptl. conditions. The methods are sensitive, accurate, precise and reproducible with recoveries 96.6-99.1%. Beer’s law limits are given.

Indian Journal of Pharmaceutical Sciences published new progress about 3818-50-6. 3818-50-6 belongs to alcohols-buliding-blocks, auxiliary class Anti-infection,Antiparasitic, name is N-Benzyl-N,N-dimethyl-2-phenoxyethanaminium 3-hydroxy-2-naphthoate, and the molecular formula is C28H29NO4, SDS of cas: 3818-50-6.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Sastry, C. S. P. published the artcileSpectrophotometric determination of bephenium hydroxynaphthoate, diiodohydroxyquinoline and iodochlorohydroxyquinoline with diazotized dapsone, COA of Formula: C28H29NO4, the publication is Indian Drugs (1989), 26(10), 567-9, database is CAplus.

Bephenium hydroxynaphthoate (I) diiodohydroxyquinoline (II), and iodochlorohydroxyquinoline (III) were determined in pharmaceuticals by a spectrophotometric method based on the drug reaction with the diazonium salt from dapsone and measurement of absorbances at 500 nm for I and 430 nm for II and III. Beer’s law limits, molar extinction coefficients, and Sandell’s sensitivities for these drugs were determined The relative standard deviations for I, II, and III were 1.17, 0.78 and 1.05%, resp.

Indian Drugs published new progress about 3818-50-6. 3818-50-6 belongs to alcohols-buliding-blocks, auxiliary class Anti-infection,Antiparasitic, name is N-Benzyl-N,N-dimethyl-2-phenoxyethanaminium 3-hydroxy-2-naphthoate, and the molecular formula is C28H29NO4, COA of Formula: C28H29NO4.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts