Month: October 2022

Mathew, Bini; Ruiz, Pedro; Dutta, Shilpa; Entrekin, Jordan T.; Zhang, Sixue; Patel, Kaval D.; Simmons, Micah S.; Augelli-Szafran, Corinne E.; Cowell, Rita M.; Suto, Mark J. published the artcile< Structure-activity relationship (SAR) studies of N-(3-methylpyridin-2-yl)-4-(pyridin-2-yl)thiazol-2-amine (SRI-22819) as NF-κB activators for the treatment of ALS>, SDS of cas: 20099-90-5, the main research area is amyotrophic lateral sclerosis superoxide dismutase NF kapaB ataluren hybrid; Amyotrophic lateral sclerosis; Ataluren; NF-ҡB; Superoxide dismutase.

ALS is a rare type of progressive neurol. disease with unknown etiol. It results in the gradual degeneration and death of motor neurons responsible for controlling the voluntary muscles. Identification of mutations in the superoxide dismutase (SOD) 1 gene has been the most significant finding in ALS research. SOD1 abnormalities have been associated with both familial as well as sporadic ALS cases. SOD2 is a highly inducible SOD that performs in concurrence with SOD1 to detoxify ROS. Induction of SOD2 can be obtained through activation of NF-κBs. We previously reported that SRI-22819 increases NF-κB expression and activation in vitro, but it has poor ADME properties in general and has no oral bioavailability. Our initial studies were focused on direct modifications of SRI-22819. There were active compounds identified but no improvement in microsomal stability was observed In this context, we focused on making more significant structural changes in the core of the mol. Ataluren, an oxadiazole compound that promotes read-through and expression of dystrophin in patients with Duchenne muscular dystrophy, bears some structural similarity to SRI-22819. Thus, we synthesized a series of SRI-22819 and Ataluren (PTC124) hybrid compounds Several compounds from this series exhibited improved activity, microsomal stability and lower calculated polar surface area (PSA). This manuscript describes the synthesis and biol. evaluation of SRI-22819 analogs and its hybrid combination with Ataluren.

European Journal of Medicinal Chemistry published new progress about Amyotrophic lateral sclerosis. 20099-90-5 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO3, SDS of cas: 20099-90-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Baixue; Hu, Rong; Qin, Anjun; Tang, Ben Zhong published the artcile< Copper-based ionic liquid-catalyzed click polymerization of diazides and diynes toward functional polytriazoles for sensing applications>, Safety of 1,2-Bis(4-bromophenyl)-1,2-diphenylethene, the main research area is copper ionic liquid catalyst stereoregular polytriazole preparation chemosensor.

Click polymerizations of azides and alkynes catalyzed by Cu(I) species have been widely studied and play a significant role in polymer synthesis. In these approaches, long reaction time and/or elevated temperature are generally required. Fabrication of new catalytic systems with higher efficiency and an energy saving feature is still a key challenge. In this work, an efficient copper-based ionic liquid (Cu-IL) is facilely prepared and used to catalyze the azide-alkyne click polymerization under mild reaction conditions. Soluble and thermally stable 1,4-regioregular polytriazoles (PTAs) with satisfactory mol. weights (up to 56 100) are readily synthesized in high yields (up to 95%). Thanks to its intense blue fluorescence and excellent water-solubility, the resultant ionic PTA could be applied for sensitive explosive detection, selective Fe3+ ion recognition and specific bioimaging in its aqueous solution Thus, this work not only establishes a powerful Cu-IL-catalyzed azide-alkyne click polymerization but also provides PTAs with versatile properties.

Polymer Chemistry published new progress about Alkadiynes Role: RCT (Reactant), RACT (Reactant or Reagent) (terminal). 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Safety of 1,2-Bis(4-bromophenyl)-1,2-diphenylethene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Boelke, Andreas; Kuczmera, Thomas J.; Caspers, Lucien D.; Lork, Enno; Nachtsheim, Boris J. published the artcile< Iodolopyrazolium Salts: Synthesis, Derivatizations and Applications>, Computed Properties of 20776-50-5, the main research area is oxidative cyclization iodophenylpyrazole; iodolopyrazolium triflate preparation.

The synthesis of iodolopyrazolium triflates via an oxidative cyclization of 3-(2-iodophenyl)-1H-pyrazoles is described. The reaction is characterized by a broad substrate scope, and various applications of these novel cyclic iodonium salts acting as useful synthetic intermediates are demonstrated, in particular in site-selective ring openings. This was finally applied to generate derivatives of the anti-inflammatory drug celecoxib. Their application as highly active halogen-bond donors is shown as well.

Organic Letters published new progress about Oxidative cyclization. 20776-50-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H6BrNO2, Computed Properties of 20776-50-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Galli, Marzia; Fletcher, Catherine J.; del Pozo, Marc; Goldup, Stephen M. published the artcile< Scalable anti-Markovnikov hydrobromination of aliphatic and aromatic olefins>, COA of Formula: C8H8BrF, the main research area is alkene hydrogen bromide regioselective hydrobromination; alkyl bromide preparation.

To improve access to a key synthetic intermediate a direct hydrobromination-Negishi route was targeted. Unsurprisingly, the anti-Markovnikov addition of HBr to estragole in the presence of AIBN proved successful. However, even in the absence of an added initiator, anti-Markovnikov addition was observed Re-examination of early reports revealed that selective Markovnikov addition, often simply termed “”normal”” addition, was not always observed with HBr unless air was excluded, leading to the rediscovery of a reproducible and scalable initiator-free protocol.

Organic & Biomolecular Chemistry published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 405931-46-6 belongs to class bromides-buliding-blocks, and the molecular formula is C8H8BrF, COA of Formula: C8H8BrF.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Cui, Chun-Xiao; Zhang, Jie; Qiu, Zaozao; Xie, Zuowei published the artcile< Palladium-catalyzed intramolecular dehydrogenative coupling of BH and OH: synthesis of carborane-fused benzoxaboroles>, Safety of 2-Bromo-3-methoxyphenol, the main research area is carborane fused benz.

Palladium acetate-catalyzed intramol. BH-OH coupling and cyclization of 2-hydroxyphenyl-substituted carboranes afforded carborane-fused benzoxaboroles I (2a-t; R1 = H, Me; R2 = H, halo, Me, OMe, Ph, tBu, benzo) and II (3a-p). A Pd-catalyzed intramol. dehydrogenative coupling of BH and OH for the construction of cage B-O bonds has been developed, leading to a new class of 1,3- and 1,4-o-carboranobenzoxaborole derivatives This represents a new route to C,B-carborane-fused heterocycles.

Dalton Transactions published new progress about Carboranes Role: PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 135999-16-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H7BrO2, Safety of 2-Bromo-3-methoxyphenol.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhang, Baohua; Shi, Lanxiang published the artcile< Asymmetric Henry condensation catalyzed by ionic liquid-supported proline>, HPLC of Formula: 3893-18-3, the main research area is asym Henry condensation proline ionic liquid.

A functionalized ionic liquid-supported proline, 1-methyl-3-{2-[(2S)-pyrrolidine-2-carbonyloxy]-ethyl}-1H-imidazol-3-ium trifluoromethylcarbonate([Promim]CF3CO2), was used to catalyze the Henry condensation reaction of aldehydes with CH3CH2NO2 or CH3NO2. The desired products were obtained in 79%-95% yields, diastereomeric excess and enantiomeric excess was up to 3 : 1 and 85% under relatively mild conditions. [Promim] CF3CO2 could be efficiently recycled six times without the decrease of catalytic activity in the condensation reaction of 4-nitrobenzaldehyde and CH3CH2NO2. [Promim] CF3CO2 could be efficiently recycled six times without the decrease of catalytic activity in the condensation reaction of 4-nitrobenzaldehyde and CH3CH2NO2.

Yingyong Huaxue published new progress about Catalyst supports. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, HPLC of Formula: 3893-18-3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Chen, Liu Zeng; Zhang, Xing Xing; Liu, Ming Ming; Wu, Jing; Ma, Duo; Diao, Liang Zhuo; Li, Qingshan; Huang, Yan Shuang; Zhang, Rui; Ruan, Ban Feng; Liu, Xin Hua published the artcile< Discovery of Novel Pterostilbene-Based Derivatives as Potent and Orally Active NLRP3 Inflammasome Inhibitors with Inflammatory Activity for Colitis>, Quality Control of 3959-07-7, the main research area is pterostilbene NLRP3 inflammasome inhibitor colitis.

Studies have shown that the abnormal activation of the NLRP3 inflammasome is involved in a variety of inflammatory-based diseases. In this study, a high content screening model targeting the activation of inflammasome was first established and pterostilbene was discovered as the active scaffold. Based on this finding, total of 50 pterostilbene derivatives were then designed and synthesized. Among them, compound 47 was found to be the best one for inhibiting cell pyroptosis [inhibitory rate (IR) = 73.09% at 10μM], showing low toxicity and high efficiency [against interleukin-1β (IL-1β): half-maximal inhibitory concentration (IC50) = 0.56μM]. Further studies showed that compound 47 affected the assembly of the NLRP3 inflammasomes by targeting NLRP3. The in vivo biol. activity showed that this compound significantly alleviated dextran sodium sulfate (DSS)-induced colitis in mice. In general, our study provided a novel lead compound directly targeting the NLRP3 protein, which is worthy of further research and structural optimization.

Journal of Medicinal Chemistry published new progress about Apoptosis-regulating proteins Role: BSU (Biological Study, Unclassified), BIOL (Biological Study) (ASC, expression not affected by inhibitor, and inhibition of ASC oligomerization). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Quality Control of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Thanikachalam, Venugopal; Jeeva, Palanivel; Jayabharathi, Jayaraman; Ramanathan, Periyasamy; Prabhakaran, Annadurai; Saroj Purani, Elayaperumal published the artcile< Nondoped Blue Organic Light Emitting Devices with Donor-π-Acceptor Derivatives as the Emissive Material>, Formula: C9H7BrO, the main research area is blue organic light emitting device MO photoluminescence solvent polarity.

Blue emitting devices based on donor-linker-acceptor geometry such as p-methoxynaphthylphenanthroimidazole-phenyl-phenylbenzenamine (TPA-MPI) and p-methoxynaphthylphenanthroimidazole-styryl-phenylbenzenamine (TPA-MPS) were synthesized and characterized. Due to the rigid mol. backbone composed of phenanthro[9,10-d]imidazole (acceptor), Ph (TPA-MPI) and styryl (TPA-MPS) spacers, and triphenylamine (donor), these compounds exhibit good thermal stability. The nondoped device based on TAP-MPS exhibits higher efficiencies, 1.73 cd A-1 (ηc), 1.46 lm W-1 (ηp), and 2.11% (ηex). The higher efficiency is attributed to the coemission from the intercrossed excited state of the emissive layer.

Industrial & Engineering Chemistry Research published new progress about Band gap. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Formula: C9H7BrO.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Gotoh, Hiroaki; Hayashi, Yujiro published the artcile< Diarylprolinol Silyl Ether as Catalyst of an exo-Selective, Enantioselective Diels-Alder Reaction>, COA of Formula: C9H7BrO, the main research area is aldehyde unsaturated enantioselective Diels Alder reaction catalytic; pyrrolidine siloxy fluoroacetic acid enantioselective Diels Alder catalyst aldehyde; bicycloheptaenecarboxaldehyde Diels Alder preparation; cyclohexenealdehyde Diels Alder preparation.

In combined use with CF3CO2H, 2-[bis(3,5-bis-trifluoromethylphenyl)triethylsiloxymethyl]pyrrolidine is an effective organocatalyst of an exo-selective, enantioselective Diels-Alder reaction of α,β-unsaturated aldehydes.

Organic Letters published new progress about Diels-Alder reaction catalysts, stereoselective. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, COA of Formula: C9H7BrO.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wang, Li; Chen, Peng published the artcile< Development of first-stage co-liquefaction of Chinese coal with waste plastics>, Application of C7H4Br2O2, the main research area is liquefaction Chinese coal waste plastic.

Polyethylene (PE), polypropylene (PP), and polystyrene (PS), etc. were successfully converted to oil under typical direct liquefaction conditions (410-450°, reaction time of 60 min, 10 MPa of H2 cold) with Chinese coal. A series of liquefaction experiments were run using ground coal and plastic waste, individually and in combination. Results on individual plastics showed that high d. PE (HDPE) was by far the most difficult of the model plastics to convert, higher conversions could be obtained with higher temperatures Co-liquefaction experiments were performed on coal-plastic mixtures (usually 1:1 mixtures) using a Chinese Xianfeng lignite with the fly ash of molybdenum concentrates calcined (FAMo) as catalyst. The oil yields except Xianfeng lignite-HDPE co-liquefaction were as high as 60.3-78.1%, while the total conversions reached levels of over 95%. Anyway, oil yields for Chinese coal-plastic co-liquefaction were higher, typically by 5.1-22.6%, than the average of the oil yields for the coal and plastic alone, hydrogen consumption was also reduced by 7.7-17.9%, implying synergistic effects in co-liquefaction reaction of Chinese coal and waste plastics (WP).

Chemical Engineering and Processing published new progress about Coal hydroliquefaction. 603-78-1 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4Br2O2, Application of C7H4Br2O2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary