Month: December 2022

Yilmaz, Sakir published the artcileBentonite grafted with poly(N-acryloylglycineamide) brush: A novel clay-polymer brush hybrid material for the effective removal of Hg(II) and As(V) from aqueous environments, Name: N-(2-Amino-2-oxoethyl)acrylamide, the publication is Colloids and Surfaces, A: Physicochemical and Engineering Aspects (2021), 125979, database is CAplus.

The present work was conducted to indicate bentonite grafted with poly(N-acryloylglycineamide) (PNAGA@BNT) could be applied as a novel clay-polymer brush hybrid material for the removal of Hg(II) and As(V) from aqueous environments. The PNAGA@BNT synthesized via the surface initiated reversible addition fragmentation chain transfer (SI-RAFT) polymerization method was characterized by BET anal., Fourier transform IR spectrometry (FTIR), X-ray diffraction (XRD), XPS, SEM (SEM) and water contact angle measurements. Hg(II)% and As(V)% removal onto PNAGA@BNT was carried out with response surface methodol. (RSM). The effects of the operating parameters, like pH, heavy metal ion concentration (Co), PNAGA@BNT amount, and mixing time were evaluated by central composite design (CCD). The optimum Hg(II) adsorption conditions from the CCD were found to be 6.54, 24.46 mg/L, 23.98 mg, and 106.83 min for pH, Co, PNAGA@BNT dosage, and mixing time, resp. On the other hand, the optimum points obtained for As(V) adsorption from CCD were 4.36, 7.30 mg/L, 25.75 mg, and 83.37 min for pH, Co, PNAGA@BNT dosage, and mixing time, in their given order. At the optimal points obtained for Hg(II) and As(V) adsorption, the maximum Hg(II)% and As(V)% removal efficiencies were 98.58% and 90.95%, resp. The kinetic models with best fit were the pseudo-second-order kinetic model for Hg(II) and As(V) and Weber-Morris intraparticle diffusion was the dominant mechanism for As(V) and Hg(II). Among the isotherms, the equilibrium data best fit the Langmuir and Freundlich models for Hg(II), and the Dubinin-Radushkevich (D-R) and Freundlich models for As(V). Moreover, thermodn. studies suggested the adsorption process was exothermic and spontaneous.

Colloids and Surfaces, A: Physicochemical and Engineering Aspects published new progress about 2479-62-1. 2479-62-1 belongs to amides-buliding-blocks, auxiliary class Monomers,Acrylamide Monomers, name is N-(2-Amino-2-oxoethyl)acrylamide, and the molecular formula is C24H29N5O3, Name: N-(2-Amino-2-oxoethyl)acrylamide.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Lu, Xiao-Wei published the artcileModulating the hybridization property of PNA with a peptoid-like side chain, Quality Control of 186046-83-3, the publication is Organic Letters (2009), 11(11), 2329-2332, database is CAplus and MEDLINE.

Modification on the γ-N of the PNA backbone yielded a PNA analog with a peptoid-like side chain. We found that the length of the side chain was important in influencing the hybridization affinity of the modified PNA.

Organic Letters published new progress about 186046-83-3. 186046-83-3 belongs to amides-buliding-blocks, auxiliary class Purine,Carboxylic acid,Amine,Benzene,Amide,Others,PNA,, name is 2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(2-(((benzhydryloxy)carbonyl)amino)-6-oxo-5H-purin-9(6H)-yl)acetamido)acetic acid, and the molecular formula is C40H35N7O8, Quality Control of 186046-83-3.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Spagnolo, Piero published the artcileOne-pot preparation of isomeric acetyl- and 2,2,2-trifluoroacetylazidothiophenes by selective bifunctionalization of dibromothiophenes via halogen-lithio exchange, COA of Formula: C6H10F3NO, the publication is Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1996), 963-964, database is CAplus.

A series of isomeric acetyl- (I, R = H) and 2,2,2-trifluoroacetylazidothiophenes (I, R = F) are prepared from 2,3-, 3,4-, and 2,5-dibromothiophenes via a one-pot procedure entailing stepwise halogen-lithium exchange and successive reaction of the resulting thienyllithium derivatives with tosyl azide and either N,N-dimethylacetamide or N,N-diethyl-2,2,2-trifluoroacetamide.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry published new progress about 360-92-9. 360-92-9 belongs to amides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Amine,Aliphatic hydrocarbon chain,Amide, name is N,N-Diethyl-2,2,2-trifluoroacetamide, and the molecular formula is C7H6BF3O2S, COA of Formula: C6H10F3NO.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Mochizuki, Tatsuki published the artcileEffect of Cyclosporin A and Impact of Dose Staggering on OATP1B1/1B3 Endogenous Substrates and Drug Probes for Assessing Clinical Drug Interactions, Application of (S)-2-(N-((2′-(1H-Tetrazol-5-yl)-[1,1′-biphenyl]-4-yl)methyl)pentanamido)-3-methylbutanoic acid, the publication is Clinical Pharmacology & Therapeutics (Hoboken, NJ, United States) (2022), 111(6), 1315-1323, database is CAplus and MEDLINE.

This study was designed to assess the quant. performance of endogenous biomarkers for organic anion transporting polypeptide (OATP) 1B1/1B3-mediated drug-drug interactions (DDIs). Ten healthy volunteers orally received OATP1B1/1B3 probe cocktail (0.2 mg pitavastatin, 1 mg rosuvastatin, and 2 mg valsartan) and an oral dose of cyclosporin A (CysA, 20 mg and 75 mg) separated by a 1-h interval (20 mg (-1 h), and 75 mg (-1 h)). CysA 75 mg was also given with a 3-h interval (75 mg (-3 h)) to examine the persistence of OATP1B1/1B3 inhibition. The area under the plasma concentration-time curve ratios (AUCRs) were 1.63, 3.46, and 2.38 (pitavastatin), 1.39, 2.16, and 1.81 (rosuvastatin), and 1.42, 1.77, and 1.85 (valsartan), at 20 mg, 75 mg (-1 h) and 75 mg (-3 h) of CysA, resp. CysA effect on OATP1B1/1B3 was unlikely to persist at the dose examined Among 26 putative OATP1B1/1B3 biomarkers evaluated, AUCR and maximum concentration ratio (C_maxR) of CP-I showed the highest Pearson′s correlation coefficient with CysA AUC (0.94 and 0.93, resp.). Correlation between AUCR of pitavastatin, and C_maxR or AUCR of CP-I were consistent between this study and our previous study using rifampicin as an OATP1B1/1B3 inhibitor. Nonlinear regression anal. of AUCR^-1 of pitavastatin and CP-I against CysA C_max yielded K_{i,OATP1B1/1B3,app} (109 ± 35 and 176 ± 42 nM, resp.), similar to the K_{i,OATP1B1/1B3} estimated by our physiol.-based pharmacokinetic model anal. described previously (107 nM). The endogenous OATP1B1/1B3 biomarkers, particularly C_maxR and AUCR of CP-I, corroborates OATP1B1/1B3 inhibition and yields valuable information that improve accurate DDI predictions in drug development, and enhance our understanding of interindividual variability in the magnitude of DDIs.

Clinical Pharmacology & Therapeutics (Hoboken, NJ, United States) published new progress about 137862-53-4. 137862-53-4 belongs to amides-buliding-blocks, auxiliary class GPCR/G Protein,Angiotensin Receptor, name is (S)-2-(N-((2′-(1H-Tetrazol-5-yl)-[1,1′-biphenyl]-4-yl)methyl)pentanamido)-3-methylbutanoic acid, and the molecular formula is C24H29N5O3, Application of (S)-2-(N-((2′-(1H-Tetrazol-5-yl)-[1,1′-biphenyl]-4-yl)methyl)pentanamido)-3-methylbutanoic acid.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Ibrahim, Ayon published the artcileLocal Mitochondrial ATP Production Regulates Endothelial Fatty Acid Uptake and Transport, Name: N-((4-Acetamidophenyl)carbamothioyl)-4-(tert-butyl)benzamide, the publication is Cell Metabolism (2020), 32(2), 309-319.e7, database is CAplus and MEDLINE.

Most organs use fatty acids (FAs) as a key nutrient, but little is known of how blood-borne FAs traverse the endothelium to reach underlying tissues. We conducted a small-mol. screen and identified niclosamide as a suppressor of endothelial FA uptake and transport. Structure/activity relationship studies demonstrated that niclosamide acts through mitochondrial uncoupling. Inhibitors of oxidative phosphorylation and the ATP/ADP translocase also suppressed FA uptake, pointing principally to ATP production Decreasing total cellular ATP by blocking glycolysis did not decrease uptake, indicating that specifically mitochondrial ATP is required. Endothelial FA uptake is promoted by fatty acid transport protein 4 (FATP4) via its ATP-dependent acyl-CoA synthetase activity. Confocal microscopy revealed that FATP4 resides in the endoplasmic reticulum (ER), and that endothelial ER is intimately juxtaposed with mitochondria. Together, these data indicate that mitochondrial ATP production, but not total ATP levels, drives endothelial FA uptake and transport via acyl-CoA formation in mitochondrial/ER microdomains.

Cell Metabolism published new progress about 380315-80-0. 380315-80-0 belongs to amides-buliding-blocks, auxiliary class Apoptosis,p53, name is N-((4-Acetamidophenyl)carbamothioyl)-4-(tert-butyl)benzamide, and the molecular formula is C20H23N3O2S, Name: N-((4-Acetamidophenyl)carbamothioyl)-4-(tert-butyl)benzamide.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Chen, Zimin published the artcileN-Cyanation of Primary and Secondary Amines with Cyanobenziodoxolone (CBX) Reagent, Product Details of C15H14N2, the publication is Chemistry – A European Journal (2021), 27(60), 14836-14840, database is CAplus and MEDLINE.

An efficient electrophilic N-cyanation of amines e.g., pyrrolidine with a stable and less-toxic 1-cyano-1,2-benziodoxol-3-(1H)-one reagent towards the synthesis of cyanamides e.g., Pyrrolidine-1-carbonitrile was disclosed. This synthetically practicable strategy allows the construction of a wide variety of cyanamides under very mild and simple conditions with a broad functional group compatibility, and showcases a huge potential in late-stage modification of complex mols.

Chemistry – A European Journal published new progress about 2451-91-4. 2451-91-4 belongs to amides-buliding-blocks, auxiliary class Nitrile,Amine,Benzene, name is N,N-Dibenzylcyanamide, and the molecular formula is C15H14N2, Product Details of C15H14N2.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Zhang, Yue published the artcileAngiotensin receptor-neprilysin inhibitor attenuates cardiac hypertrophy and improves diastolic dysfunction in a mouse model of heart failure with preserved ejection fraction, Synthetic Route of 137862-53-4, the publication is Clinical and Experimental Pharmacology and Physiology (2022), 49(8), 848-857, database is CAplus and MEDLINE.

LCZ696, an angiotensin receptor-neprilysin inhibitor, has shown promising clin. efficacy in patients with heart failure (HF) with reduced ejection fraction. However, its potential effects on heart failure with preserved ejection fraction (HFpEF) are still not fully understood. We evaluated the effect of LCZ696 on HFpEF in transverse aortic constriction mice and compared it with the effect of the angiotensin receptor blocker, valsartan. We found that LCZ696 improved cardiac diastolic function by reducing ventricular hypertrophy and fibrosis in mice with overload-induced diastolic dysfunction. In addition, there was superior inhibition of LCZ696 than stand-alone valsartan. As a potential underlying mechanism, we demonstrated that LCZ696 behaves as a potent suppressor of calcium-mediated calcineurin-nuclear factor of activated T cells (NFAT) signalling transduction pathways. Hence, we demonstrated the protective effects of LCZ696 in overload-induced HFpEF and provided a pharmaceutical therapeutic strategy for related diseases.

Clinical and Experimental Pharmacology and Physiology published new progress about 137862-53-4. 137862-53-4 belongs to amides-buliding-blocks, auxiliary class GPCR/G Protein,Angiotensin Receptor, name is (S)-2-(N-((2′-(1H-Tetrazol-5-yl)-[1,1′-biphenyl]-4-yl)methyl)pentanamido)-3-methylbutanoic acid, and the molecular formula is C17H19N3O7S, Synthetic Route of 137862-53-4.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Liu, Hong-ming published the artcileA bifunctional enzyme belonging to cytochrome P450 family involved in the O-dealkylation and N-dealkoxymethylation toward chloroacetanilide herbicides in Rhodococcus sp. B2, Recommanded Product: 2-Chloroacetamide, the publication is Microbial Cell Factories (2021), 20(1), 61, database is CAplus and MEDLINE.

The chloroacetamide herbicides pretilachlor is an emerging pollutant. Due to the large amount of use, its presence in the environment threatens human health. However, the mol. mechanism of pretilachlor degradation remains unknown. Now, Rhodococcus sp. B2 was isolated from rice field and shown to degrade pretilachlor. The maximum pretilachlor degradation efficiency (86.1%) was observed at a culture time of 5 d, an initial substrate concentration 50 mg/L, pH 6.98, and 30.1 °C. One novel metabolite N-hydroxyethyl-2-chloro-N-(2, 6-diethyl-phenyl)-acetamide was identified by gas chromatog.-mass spectrometry (GC-MS). Draft genome comparison demonstrated that a 32,147-bp DNA fragment, harboring gene cluster (EthRABCDB2), was absent from the mutant strain TB2 which could not degrade pretilachlor. The Eth gene cluster, encodes an AraC/XylS family transcriptional regulator (EthRB2), a ferredoxin reductase (EthAB2), a cytochrome P 450 monooxygenase (EthBB2), a ferredoxin (EthCB2) and a 10-kDa protein of unknown function (EthDB2). Complementation with EthABCDB2 and EthABDB2, but not EthABCB2 in strain TB2 restored its ability to degrade chloroacetamide herbicides. Subsequently, codon optimization of EthABCDB2 was performed, after which the optimized components were sep. expressed in Escherichia coli, and purified using Ni-affinity chromatog. A mixture of EthABCDB2 or EthABDB2 but not EthABCB2 catalyzed the N-dealkoxymethylation of alachlor, acetochlor, butachlor, and propisochlor and O-dealkylation of pretilachlor, revealing that EthDB2 acted as a ferredoxin in strain B2. EthABDB2 displayed maximal activity at 30 °C and pH 7.5. This is the first report of a P 450 family oxygenase catalyzing the O-dealkylation and N-dealkoxymethylation of pretilachlor and propisochlor, resp. And the results of the present study provide a microbial resource for the remediation of chloroacetamide herbicides-contaminated sites. The GenBank accession numbers of the Rhodococcus sp. B2 16S rRNA gene, sequence of the gene cluster EthRABCD B2 and scaffold 51 are KM875453, KJ946935 and MW378985.

Microbial Cell Factories published new progress about 79-07-2. 79-07-2 belongs to amides-buliding-blocks, auxiliary class Chloride,Amine,Aliphatic hydrocarbon chain,Amide,Inhibitor, name is 2-Chloroacetamide, and the molecular formula is C2H4ClNO, Recommanded Product: 2-Chloroacetamide.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Qiu, Xinyi published the artcileRemodeling the periodontitis microenvironment for osteogenesis by using a reactive oxygen species-cleavable nanoplatform, Computed Properties of 1869-45-0, the publication is Acta Biomaterialia (2021), 593-605, database is CAplus and MEDLINE.

Modestly removing the excessive reactive oxygen species (ROS) plays a crucial role in regulating the microenvironment of periodontitis and provides favorable conditions for osteogenesis. However, the current strategy for scavenging ROS is not controllable, substantially limiting the outcomes in periodontitis. Herein, we introduced a controllable ROS-scavenging nanoplatform by encasing N-acetylcysteine NAC, (a well-known ROS scavenger) into tailor-made ROS-cleavable amphiphilic polymer nanoparticles (PEG-ss-PCL NPs) as an intracellular delivery carrier. The existing ROS in the inflammatory microenvironment facilitated polymer degradation via breakage of thioketal bonds, and then led to encapsulated NAC release. NAC eliminated all ROS induced by lipopolysaccharide (LPS), while PssL-NAC adjusted the ROS level slightly higher than that of the control group. The percentage of apoptotic cells cultured with NAC and PssL-NAC decreased observably compared with that of cells cultured with 10 Μg/mL LPS. The microenvironment regulated by PssL-NAC was highly suitable for osteogenic differentiation based on PCR and Western blot results, which showed higher expression levels of BMP2, Runx2, and PKA. Anal. of ALP activity and Alizarin red S staining showed consistent results. Addnl., the injection of PssL-NAC into the periodontitis area could alleviate the tissue destruction induced by ligation of the maxillary second molar. PssL-NAC showed a better ability to decrease osteoclast activity and inflammation, consequently improving the restoration of destroyed tissue. Our study suggests that ROS-responsive polymer nanoparticles loaded with NAC (PssL-NAC) can be new promising materials for the treatment of periodontitis. More and more studies indicate that periodontal tissue damage is closely related to the high reactive oxygen species (ROS) environment. Excessive ROS will aggravate periodontal tissue damage and is not conducive to tissue repair. However, as an essential signal mol. in human physiol. activities, ROS absence is also useless for tissue repair. In this study, we proposed to improve ROS imbalance in the environment of periodontitis as a strategy to promote periodontal regeneration and successfully synthesized a smart drug-releasing nanoplatform that can respond to ROS. Besides, we validated its ability to regulate the ROS environment and promote osteogenesis through exptl. data in vivo and in vitro.

Acta Biomaterialia published new progress about 1869-45-0. 1869-45-0 belongs to amides-buliding-blocks, auxiliary class Trifluoromethylated Building Blocks, name is 2,2,2-Trifluoro-N-(2-mercaptoethyl)acetamide, and the molecular formula is C4H6F3NOS, Computed Properties of 1869-45-0.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Wang, Ruifeng published the artcileDesign, synthesis, biological evaluation and molecular docking study of novel thieno[3,2-d]pyrimidine derivatives as potent FAK inhibitors, Formula: C14H20BNO3, the publication is European Journal of Medicinal Chemistry (2020), 112024, database is CAplus and MEDLINE.

A series of 2,7-disubstituted thieno[3,2-d]pyrimidine derivatives I [R¹ = 2-methoxy, 3-acetyl, 3-methylsulfonyl, etc.], II [R² = methylcarbamoyl, piperidine-3-carbonylamino, diethoxyphosphorylmethyl, etc.], III [R³ = H, Me, ethoxy, etc.; R⁴ = H, fluoro, methyl; R⁵ = H, fluoro] and IV [R⁶ = pyrrolidin-3-yl, tetrahydro-2H-pyran-4-yl, piperidin-3-ylmethyl, etc.] were synthesized and evaluated as novel focal adhesion kinase (FAK) inhibitors. The novel 2,7-disubstituted thieno[3,2-d]pyrimidine scaffold was designed as a new kinase inhibitor platform that mimics the bioactive conformation of the well-known diaminopyrimidine motif. Most of the compounds potently suppressed the enzymic activities of FAK and potently inhibited the proliferation of U-87MG, A-549 and MDA-MB-231 cancer cell lines. Among these derivatives, the optimized compound III [R³ = R⁵ = H, R⁴ = fluoro] potently inhibited the enzyme (IC₅₀ = 28.2 nM) and displayed stronger potency than TAE-226 in U-87MG, A-549 and MDA-MB-231 cells, with IC₅₀ values of 0.16, 0.27, and 0.19μM, resp. Compound III [R³ = R⁵ = H, R⁴ = fluoro] also exhibited relatively less cytotoxicity (IC₅₀ = 3.32μM) toward a normal human cell line, HK2. According to the flow cytometry results, compound III [R³ = R⁵ = H, R⁴ = fluoro] induced the apoptosis of MDA-MB-231 cells in a dose-dependent manner and effectively arrested MDA-MB-231 cells in G0/G1 phase. Further investigations revealed that compound III [R³ = R⁵ = H, R⁴ = fluoro] potently suppressed the migration of MDA-MB-231 cells. Collectively, these data support the further development of compound III [R³ = R⁵ = H, R⁴ = fluoro] as a lead compound for FAK-targeted anticancer drug discovery.

European Journal of Medicinal Chemistry published new progress about 1197171-76-8. 1197171-76-8 belongs to amides-buliding-blocks, auxiliary class Boronic acid and ester,Amine,Benzene,Amide,Boronate Esters,Boronic Acids,Boronic acid and ester,, name is N-Methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide, and the molecular formula is C10H15ClO3S, Formula: C14H20BNO3.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics