Month: October 2022

Lopez Zavala, Miguel Angel; Reynoso-Cuevas, Liliana published the artcile< Simultaneous extraction and determination of four different groups of pharmaceuticals in compost using optimized ultrasonic extraction and ultrahigh pressure liquid chromatography-mass spectrometry>, Reference of 6055-19-2, the main research area is group pharmaceutical compost optimized ultrasonic ultrahigh pressure liquid chromatog; compost pharmaceuticals ultrasonic extraction USE UHPLC MS MS; Compost; Pharmaceuticals; UHPLC–MS/MS; Ultrasonic extraction (USE).

An anal. method for the simultaneous extraction and determination of four different groups of pharmaceuticals in compost from the biodegradation of biol. infectious hazardous wastes (BIHW) was developed and successfully validated. Compost samples were spiked with known concentrations of the pharmaceuticals of interest. Ultrasonic extraction with an Et acetate and methanol solution (1:1) resulted to be effective for the extraction of eight target compounds All the compounds were separated in a single gradient run by UHPLC using a Zorbax SB C18 Agilent (2.1 × 50 mm, 1.8 μm) column. Analytes were detected and quantified via multiple reaction monitoring (MRM) using an AB SCIEX API-5000TM triple quadrupole with electrospray ionization (ESI) in pos. mode. The optimum mobile phase consisted of ammonium formate (2 mM, pH 3): MeOH (50:50). Recovery values of the ultrasonic extraction for all compounds were on the order of 87% to 113% with absolute deviations lower than 11%. The limits of detection and quantification for the eight pharmaceuticals were on the order of 0.66 ng g-1 and 2 ng g-1 resp. for all the pharmaceuticals analyzed. These values are lower than those values reported in the literature. Suitable level of linearity, acceptable limits of detection and quantification, good repeatability and inter-day precision, non-ion interference, and low matrix effect resulted from the validation of the anal. method. Implementation of the anal. procedure proposed in this research will contribute in having shorter anal. time and lower costs when working with complex matrixes such as compost.

Journal of Chromatography A published new progress about Antibiotics. 6055-19-2 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H17Cl2N2O3P, Reference of 6055-19-2.

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

Bera, Shyamal Kanti; Mal, Prasenjit published the artcile< Mechanochemical-Cascaded C-N Cross-Coupling and Halogenation Using N-Bromo- and N-Chlorosuccinimide as Bifunctional Reagents>, Category: chlorides-buliding-blocks, the main research area is phenanthridinone derivative preparation crystal structure mol; biphenyl carboxamide halosuccinimide cascade cross coupling halogenation.

Direct synthesis of halo-substituted phenanthridinone derivatives I [R = Cl, Br, I; R1 = H, 3-Me, 3-F, etc.; R2 = H, 8-Me; R3 = OMe, Ph] was achieved via cascade C-N bond formation and subsequent halogenation reactions of N-halosuccinimides with N-methoxy-[1,1′-biphenyl]-2-carboxamides. During the reactions, NBS/NCS first assisted the oxidative C-N coupling reaction and subsequently promoted a halogenation reaction. Thus, the role of NBS/NCS was established to be bifunctional. This protocol offered a mild, solvent-free, convenient, one-pot synthesis of compounds I.

Journal of Organic Chemistry published new progress about Aromatic amides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Category: chlorides-buliding-blocks.

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

do Carmo, Lucas F.; Silva, Simone C.; Machado, Matheus V.; Prata, Paloma S.; Junior, Alberto Wisniewski; Vidal, Diogo M.; Villar, Jose Augusto F. P. published the artcile< The role of L-proline and co-catalysts in the enantioselectivity of OXA-Michael-Henry reactions>, Application In Synthesis of 5153-70-8, the main research area is nitrophenyl chromene preparation enantioselective; salicylaldehyde nitrostyrene Michael Henry tandem proline catalyst.

In this work, a study of the OXA-Michael-Henry reactions between salicylaldehyde and β-nitrostyrenes 2-R1-3-R2-4-R3C6H2CH=CHNO2 (R1 = R2 = H, R3 = Cl; R1 = R2 = H, R3 = Br; R1 = R2 = 2,3-Cl2, R3 = H, etc.), catalyzed by proline derivatives e.g., L-proline was described. The corresponding (R)-3-nitro-2-phenyl-2H-chromenes I were obtained in 55% enantiomeric excess (ee, 20 mol% L-proline) and 70% ee (stoichiometric amount) employing Ti(OiPr)4 as Lewis acid. Despite the ee obtained, this result represents the highest enantioselectivity obtained in this reaction. Therefore, this work demonstrated that it is possible to obtain considerable enantiomeric excesses in OXA-Michael-Henry reactions using L-proline, an inexpensive and accessible amino acid.

Journal of the Brazilian Chemical Society published new progress about Benzopyrans 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

Tan, Zhenda; Ci, Chenggang; Yang, Jian; Wu, Yang; Cao, Liang; Jiang, Huanfeng; Zhang, Min published the artcile< Catalytic Conversion of N-Heteroaromatics to Functionalized Arylamines by Merging Hydrogen Transfer and Selective Coupling>, Reference of 320407-92-9, the main research area is azaarene alkyl bromide amino arylmethanol ruthenium hydrogen transfer coupling; alkylaminoaryl methylazaarene preparation chemoselective.

A ruthenium-catalyzed deconstruction of N-heteroaromatics to functionalized arylamines with 2-aminoaryl methanols via hydrogen transfer and selective coupling was reported. The reaction was achieved via sequential functionalization of the β and α-sites of the initially formed N-heteroarenium salts followed by a C-N cleavage, proceeding with the striking features of broad substrate scope, excellent functional groups tolerance, high chemoselectivity and atom-efficiency, and applicable for streamline synthesis of some biomedical mols. The strategy utilized will pave the avenues for further development of catalytic transformations of inert organo-systems to functional frameworks.

ACS Catalysis published new progress about Amino alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 320407-92-9 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H8BrClO, Reference of 320407-92-9.

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

Imatoh, Takuya; Ushiki, Atsuhito; Ota, Masao; Ito, Michiko; Sekine, Akihiro; Yamashita, Taiki; Mashimo, Yoichi; Nakamura, Ryosuke; Saito, Kosuke; Saito, Yoshiro; Hanaoka, Masayuki published the artcile< Association of HLA-DRB1*04:05 allele with drug-induced interstitial lung disease in Japanese population>, Category: chlorides-buliding-blocks, the main research area is DRB HLA bevacizumab fluorouracil interstitial lung disease population.

Drug-induced interstitial lung disease (DILD) is a life-threatening adverse reaction. The Japanese population is more susceptible to DILD as compared with other populations, suggesting its pathogenesis could vary depending on ethnic genetic background. We conducted case-control studies to elucidate the association between DILD and HLA alleles in the Japanese. The 177 clin. diagnosed DILD patients and 3002 healthy controls for exploration and 55 DILD patients and 201 healthy controls for validation were genotyped for four HLA genes. HLA-DRB1*04:05 was significantly associated with DILD (corrected p = 0.014); this was also validated in the other set of patients/controls. Chem. drugs other than protein therapeutics showed this association (p = 1.7 x 10-4) . The Japanese population showed a higher HLA-DRB1*04:05 frequency than most other populations. In conclusion, HLA-DRB1*04:05 could be associated with DILD susceptibility in Japanese individuals, and its high general frequency may explain the high reported incidence of DILD in Japanese.

Pharmacogenomics Journal published new progress about Age groups. 6055-19-2 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H17Cl2N2O3P, Category: chlorides-buliding-blocks.

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

Brodskii, E. S.; Kluev, N. A.; Zhil’nikov, V. G.; Bocharov, B. V.; Dovgilevich, A. V.; Mel’nikova, N. P.; Grandberg, I. I. published the artcile< Photodegradation of the herbicide Goal>, Synthetic Route of 35852-58-5, the main research area is herbicide Goal photolysis product.

Photodegradation products of the herbicide Goal active ingredient were obtained with a xenon lamp and analyzed using direct inlet mass spectrometry (MS), MS/MS and gas chromatog./MS. A number of products were identified and their generation pathways were established to be mainly Ar-O bond cleavage, dechlorination and photocyclization. The latter process gives chlorinated and unchlorinated dibenzofurans some of which may be toxic.

Toxicological and Environmental Chemistry published new progress about Herbicides. 35852-58-5 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H4ClF3O, Synthetic Route of 35852-58-5.

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

Hansch, Corwin; Coubeils, Jean Louis; Leo, A. published the artcile< Antimicrobial structure-activity relation in esters of 4-hydroxybenzoic acid>, Application of C8H7ClO3, the main research area is methyl hydroxybenzoate antimicrobiol activity; ethyl hydroxybenzoate antimicrobiol activity.

Equations of the type log 1/c = alog p + b were derived to correlate the molar concn (C) of 4-hydroxybenzoates (such as methyl 4-hydroxybenzoate [99-76-3] and ethyl 4-hydroxybenzoate [120-47-8]) causing a standard antimicrobial response with their relative lipophilic character (P) for fungi, gram-pos., and gram-neg. bacteria. Thus, hydroxybenzoates were found to be .sim.30-fold as toxic to fungi as to gram-pos. cells, while gram-neg. cells showed an intermediate toxicity.

Chimica Therapeutica published new progress about Fungicides. 3964-57-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H7ClO3, Application of C8H7ClO3.

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

Sudo, Yu; Kawai, Ryuki; Nabae, Yuta; Hayakawa, Teruaki; Kakimoto, Masa-aki published the artcile< Self-condensing vinyl polymerization of a switchable chain transfer monomer for facile synthesis of star-shaped block copolymers>, Reference of 1592-20-7, the main research area is star polymer switchable chain transfer agent.

Reversible addition-fragmentation chain transfer-self-condensing vinyl polymerization (RAFT-SCVP) is a versatile methodol. for synthesizing hyperbranched polymers with a large number of chain transfer termini. Also, this method easily provides star-shaped block copolymers by another sequence of RAFT polymerizations The design of such block copolymers, however, is still limited because the structure of chain transfer groups needed to be selected in accordance with the activity of monomers. This paper proposes a new class of styrene-type monomer, namely (4-vinyl)benzyl-N-methyl-N-(4-pyridyl)dithiocarbamate (VPDC), as a universal chain transfer monomer for facile synthesis of star-shaped block copolymers. VPDC effectively works as a chain transfer monomer for RAFT-SCVP in protonated form, providing hyperbranched polystyrene (PVPDC). The RAFT polymerization of a more-activated monomer (MAM), in this case N-isopropylacrylamide, was demonstrated from the same RAFT agent, whereas that of a less-activated monomer (LAM), namely vinyl acetate, was also achieved after switching the activity of the termini by deprotonation of the chain transfer agent (CTA). All in all, we believe that the current findings will enable facile synthesis of more varied star-shaped block copolymers with flexible design.

Applied Surface Science published new progress about Branched polymers, star-branched Role: SPN (Synthetic Preparation), PREP (Preparation). 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Reference of 1592-20-7.

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

Yan, Jingling; Li, Taihang; Wang, Zhen; Gao, Lianxun; Ding, Mengxian published the artcile< Hydrazine-based polyimides from isomeric bis(chlorophthalimide)s>, Related Products of 118-45-6, the main research area is hydrazine isomeric dichloro bisphthalimide thiobisbenzenethiol polyimide thermal mech property.

3,3′-Dichloro-N,N’-bisphthalimide (3,3′-DCBPI), 3,4′-dichloro-N,N’-bisphthalimide (3,4′-DCBPI), and 4,4′-dichloro-N,N’-bisphthalimide (4,4′-DCBPI) were synthesized from 3- or 4-chlorophthalic anhydrides and hydrazine in glacial acetic acid. The yield of 3,3′-DCBPI (90%) was much higher than that of 4,4′-DCBPI (33%) because of the better stability of the intermediate, 3-chloro-N-aminophthalimide, and 3,3′-DCBPI. A series of hydrazine-based polyimides were prepared from isomeric DCBPIs and 4,4′-thiobisbenzenethiol (TBBT) in N,N-dimethylacetamide in the presence of tributylamine. Inherent viscosity of these polymers was in the range of 0.51-0.69 dL/g in 1-methyl-2-pyrrolidinone (NMP) at 30 °C. These polyimides were soluble in 1,1,2,2-terachloroethane, NMP, and phenols. The 5% weight-loss temperatures (T5%s) of the polymers were near 450 °C in N2. Their glass-transition temperatures (Tgs) determined by dynamic mech. thermal anal. and differential scanning calorimetry increased according to the order of polyimides based on 4,4′-DCBPI, 3,4′-DCBPI, and 3,3′-DCBPI. The hydrolytic stability of these polymers was measured under acid, basic, and neutral conditions and the results indicated that the order was 3,3′-DCBPI/TBBT > 3,4′-DCBPI/TBBT > 4,4′-DCBPI/TBBT.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about Elongation at break. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Related Products of 118-45-6.

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

Ageberg, Malin; Rydstroem, Karin; Relander, Thomas; Drott, Kristina published the artcile< The histone deacetylase inhibitor valproic acid sensitizes diffuse large B-cell lymphoma cell lines to CHOP-induced cell death>, Related Products of 6055-19-2, the main research area is HDAC inhibitor valproic acid B cell lymphoma antitumor apoptosis; rituximab cyclophosphamide doxorubicin monohydrate vincristine sulfate prednisone; HDAC; Non-Hodgkins lymphoma; valproate; valproic acid.

Epigenetic code modifications by histone deacetylase inhibitors (HDACis) have recently been proposed as potential new therapies for hematol. malignancies. Diffuse large B-cell lymphoma (DLBCL) is the most common form of aggressive lymphoma. At present, standard first line treatment for DLBCL patients is the antracycline-based chemotherapy regimen CHOP (cyclophosphamide, doxorubicin, vincristine and prednisone) combined with the monoclonal anti-CD20 antibody rituximab (R-CHOP). Since only 50-60 % of patients reach a long-time cure by this treatment, there is an urgent need for novel treatment strategies to increase the response and long-term remission to initial R-CHOP therapy. In this study, we investigated the effect of the HDAC inhibitor valproic acid (VPA) on DLBCL cell lines. To elucidate the effects of VPA on chemo-sensitivity, we used a cell-line based model of CHOP-refractory DLBCL. All five DLBCL cell lines treated with VPA alone or in combination with CHOP showed decreased viability and proliferation. The VPA-induced sensitization of DLBCL cells to cytotoxic treatment resulted in increased number of apoptotic cell as judged by annexin V-positivity and the presence of cleaved caspase-3. In addition, pretreatment with VPA resulted in a significantly increased DNA-damage as compared to CHOP alone. In summary, HDAC inhibitors such as VPA, are promising therapeutic agents in combination with R-CHOP for patients with DLBCL.

American Journal of Translational Research published new progress about Acetylation. 6055-19-2 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H17Cl2N2O3P, Related Products of 6055-19-2.

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