Day: November 21, 2022

Galenko, Ekaterina E. published the artcileIsoxazole Strategy for the Synthesis of α-Aminopyrrole Derivatives, SDS of cas: 1076-59-1, the publication is Journal of Organic Chemistry (2019), 84(17), 11275-11285, database is CAplus and MEDLINE.

The synthesis of Me 5-aminopyrrole-3-carboxylates from 4-methyleneisoxazol-5-ones via “cyanide Michael addition/methylation/reductive isoxazole-pyrrole transformation” is developed. The last step occurs in a domino mode involving Mo(CO)₆-mediated reductive isoxazole ring-opening, Mo(CO)₆-catalyzed cis-trans-isomerization of the enamine intermediate followed by 1,5-exo-dig cyclization. 5-Amino-1H-pyrrolo-3-carboxylates react with 1,3-diketones, affording pyrrolo[1,2-a]pyrimidine-7-carboxylates, and are easily converted into 2-diazo-2H-pyrrole-4-carboxylates. These compounds demonstrate the reactivity of both diazo compounds, giving pyrrole-containing products of intra/intermol. azo coupling, and carbenes to give pyrrole-containing insertion products into CH and OH bonds under photolysis.

Journal of Organic Chemistry published new progress about 1076-59-1. 1076-59-1 belongs to isoxazole, auxiliary class Oxazoline,Benzene,Ester, name is 3-Phenylisoxazol-5(2H)-one, and the molecular formula is C9H7NO2, SDS of cas: 1076-59-1.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Kerr, William J. published the artcileIridium-catalysed ortho-H/D and -H/T exchange under basic conditions: C-H activation of unprotected tetrazoles, Application In Synthesis of 2251-79-8, the publication is Chemical Communications (Cambridge, United Kingdom) (2016), 52(40), 6669-6672, database is CAplus and MEDLINE.

The first examples of selective ortho-directed C-H activation with unprotected 2-aryltetrazoles I (X = 4-MeO, 2-Me, 3-Cl, etc.) are described. A new base-assisted protocol for iridium(I) hydrogen isotope exchange catalysis allows access to ortho-deuterated and tritiated tetrazoles, e.g., II, including the tetrazole-containing pharmaceutical, Valsartan. Preliminary mechanistic studies are also presented.

Chemical Communications (Cambridge, United Kingdom) published new progress about 2251-79-8. 2251-79-8 belongs to isoxazole, auxiliary class Trifluoromethyl,Fluoride,Benzene, name is 5-(4-(Trifluoromethyl)phenyl)-1H-tetrazole, and the molecular formula is C8H5F3N4, Application In Synthesis of 2251-79-8.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Andersen, Jacob Lauwring published the artcileThe identification of novel acid isostere based inhibitors of the VPS10P family sorting receptor Sortilin, SDS of cas: 1076-59-1, the publication is Bioorganic & Medicinal Chemistry Letters (2017), 27(11), 2629-2633, database is CAplus and MEDLINE.

Using fragment based and structure based drug discovery strategies a series of novel Sortilin inhibitors has been identified. The inhibitors are based on the N-substituted 1,2,3-triazol-4-one/ol heterocyclic template. X-ray crystallog. shows that the 1,2,3-triazol-4-one/ol acts as a carboxylic acid isostere, making a bi-dentate interaction with an arginine residue of Sortilin, an interaction which has not been previously characterized for this heterocycle.

Bioorganic & Medicinal Chemistry Letters published new progress about 1076-59-1. 1076-59-1 belongs to isoxazole, auxiliary class Oxazoline,Benzene,Ester, name is 3-Phenylisoxazol-5(2H)-one, and the molecular formula is C9H7NO2, SDS of cas: 1076-59-1.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Zhong, Xiuhua published the artcileRh-Catalysed cascade C-H imidization/cyclization of N-methoxybenzamides with isoxazolones for the assembly of dihydroquinazolin-4(1H)-one derivatives, Computed Properties of 1076-59-1, the publication is Organic Chemistry Frontiers (2022), 9(7), 1904-1910, database is CAplus.

Using isoxazolones as viable imidizating reagents, an efficient Rh(III)-catalyzed C-H imidization/cyclization cascade was developed for the specific assembly of dihydroquinazolin-4(1H)-ones I [R = H, 7-Me, 5-Cl, etc.; R¹ = Me, Et, Bn; R² = Me, Et, Ph, etc.] with the equipment of a quaternary carbon center. This protocol featured the simultaneous formation of two novel C-N bonds in a one-pot fashion with good compatibility and practicality. Combined DFT calculations and exptl. studies clarified the tandem C-H activation/oxidation addition/C-H amination/isomerization/intramol. cyclization sequence for this transformation, in which the Rh(V) nitrenoid and the imine species might be involved as active intermediates.

Organic Chemistry Frontiers published new progress about 1076-59-1. 1076-59-1 belongs to isoxazole, auxiliary class Oxazoline,Benzene,Ester, name is 3-Phenylisoxazol-5(2H)-one, and the molecular formula is C12H14O2, Computed Properties of 1076-59-1.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Ciou, Yan-Syun published the artcileCross-Dehydrogenative Coupling (CDC) as Key-Transformations to Various D-π-A Organic Dyes: C-H/C-H Synthetic Study Directed toward Dye-Sensitized Solar Cells Applications, Product Details of C18H12FN, the publication is Journal of Organic Chemistry (2017), 82(7), 3538-3551, database is CAplus and MEDLINE.

A variety of push-pull type organic dyes are facilely synthesized through the most atom-economical C-H/C-H dehydrogenative coupling reactions. After comprehensive synthetic optimizations, a broad substrate scope is achieved and functional groups, such as ester, ketone, nitrile, nitro, and triazene are well tolerated. The sensitive aldehyde group required for the conversion into anchoring groups for DSSCs applications is also compatible under present oxidant-containing reaction conditions. Based on this optimum C-H/C-H coupling approach, three new organic sensitizers are readily prepared and submitted to solar cell device fabrications, giving the power conversion efficiency (PCE) up to 4.85%. This work constitutes the first example that connects high atom-efficiency C-H/C-H green catalysis with dye-sensitized solar cell applications.

Journal of Organic Chemistry published new progress about 57103-14-7. 57103-14-7 belongs to isoxazole, auxiliary class Fused Tricycles,Carbazoles, name is 9-(4-Fluorophenyl)-9H-carbazole, and the molecular formula is C18H12FN, Product Details of C18H12FN.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Li, Rong-sheng published the artcileComparison on efficacy of different doses of butorphanol combined with preoperative parecoxib sodium for postoperative patient-controlled intravenous analgesia in female patients, COA of Formula: C19H17N2NaO4S, the publication is Guangdong Yixue (2015), 36(4), 605-607, database is CAplus.

Objective: To explore the appropriate dose of butorphanol combined with preoperative parecoxib sodium for postoperative patient-controlled i.v. analgesia. Methods: 75 Cases of ASA I-II female patients undergoing lower abdomen or lower limb operation were selected. All patients underwent operation under spinal-epidural combined anesthesia. After operation, the patients were given butorphanol 6 mg (group A, n = 25), 8 mg (group B, n = 25) and 10 mg (group C, n = 25), resp. for patient-controlled i.v. analgesia. The above-mentioned butorphanol was diluted as 100 mL with physiol. saline solution The amount of background infusion was 1.8 mL/h, and the single dose was 2 mL. The patients were i.m. injected with tramadol 100 mg for rescue analgesia. Before incision, all patients were given parecoxib sodium 40 mg. After operation, the pain visual analog score (VAS score) and Ramsay sedation score (RSS score) were observed The adverse reactions and satisfaction of patients were recorded. Results: 6, 12 and 24 h after operation, the VAS score in group B and group C was significantly lower than that in group A (P < 0.05, P < 0.01). 48 H after operation, the usage amount of butorphanol in group A, group B and group C was successively increased (P < 0.01). The incidence (24%) of dizziness in group C was higher than that (4%) in group A. The proportion (24%) of rescue analgesia in group A was higher than that (4%) in the other two groups (P < 0.05). The VAS score and RSS score in three groups had no statistically significant difference (P > 0.05). Conclusion: For the female patients undergoing lower abdomen or lower limb operation, preoperative i.v. injection of parecoxib sodium 40 mg combined with postoperative 1.8 mL/h butorphanol 8 mg is suitable for patient-controlled i.v. analgesia.

Guangdong Yixue published new progress about 198470-85-8. 198470-85-8 belongs to isoxazole, auxiliary class Immunology/Inflammation,COX, name is Sodium ((4-(5-methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)(propionyl)amide, and the molecular formula is C19H17N2NaO4S, COA of Formula: C19H17N2NaO4S.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Yao, Shao-hong published the artcileEffect of parecoxib sodium in remifentanil anesthesia during hip replacement surgery on cognitive function of elderly patients, Application of Sodium ((4-(5-methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)(propionyl)amide, the publication is Xiandai Zhenduan Yu Zhiliao (2017), 28(8), 1423-1424, database is CAplus.

To explore the effect of parecoxib sodium in remifentanil anesthesia in hip replacement surgery on the cognitive function of elderly patients. We randomly selected 100 patients who received hip replacement surgery in our hospital as the research objects, and divided them into the control group and the observation group. After remifentanil anesthesia, they were given 0.9% sodium chloride solution and parecoxib sodium to compare and analyze application effects. The MMSE scores of patients in the observation group were significantly higher than those in the control group on the 1st and 7th day after surgery (P < 0.05). The Barthel index score and Harris score (89.23 ± 12.06) and (88.96 ± 12.76) points of the observation group were significantly higher than those of the control group (42.74 ± 11.46) and (45.57 ± 11.65) points (P < 0.05). The application of parecoxib sodium in remifentanil anesthesia in hip replacement surgery has a significant impact on the cognitive function of elderly patients, improves their postoperative cognitive function, has a good prognosis, is safe and reliable, and is of great significance.

Xiandai Zhenduan Yu Zhiliao published new progress about 198470-85-8. 198470-85-8 belongs to isoxazole, auxiliary class Immunology/Inflammation,COX, name is Sodium ((4-(5-methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)(propionyl)amide, and the molecular formula is C4H5NS2, Application of Sodium ((4-(5-methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)(propionyl)amide.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Shi, Junchao published the artcileThe PERK/PKR-eIF2α pathway negatively regulates porcine hemagglutinating encephalomyelitis virus replication by attenuating global protein translation and facilitating stress granule formation, Application In Synthesis of 2323027-38-7, the publication is Journal of Virology (2022), 96(1), e01695, database is CAplus.

The replication of coronaviruses, including severe acute respiratory syndrome coronavirus (SARS-CoV), Middle East respiratory syndrome coronavirus (MERSCoV), and the recently emerged severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is closely associated with the endoplasmic reticulum (ER) of infected cells. The unfolded protein response (UPR), which is mediated by ER stress (ERS), is a typical outcome in coronavirus-infected cells and is closely associated with the characteristics of coronaviruses. However, the interaction between virus-induced ERS and coronavirus replication is poorly understood. Here, we demonstrate that infection with the betacoronavirus porcine hemagglutinating encephalomyelitis virus (PHEV) induced ERS and triggered all three branches of the UPR signaling pathway both in vitro and in vivo. In addition, ERS suppressed PHEV replication in mouse neuro-2a (N2a) cells primarily by activating the protein kinase R-like ER kinase (PERK)- eukaryotic initiation factor 2α (eIF2α) axis of the UPR. Moreover, another eIF2α phosphorylation kinase, interferon (IFN)-induced double-stranded RNA-dependent protein kinase (PKR), was also activated and acted cooperatively with PERK to decrease PHEV replication. Furthermore, we demonstrate that the PERK/PKR-eIF2α pathways neg. regulated PHEV replication by attenuating global protein translation. Phosphorylated eIF2α also promoted the formation of stress granules (SGs), which in turn repressed PHEV replication. In summary, our study presents a vital aspect of the host innate response to invading pathogens and reveals attractive host targets (e.g., PERK, PKR, and eIF2α) for antiviral drugs. IMPORTANCE Coronavirus diseases are caused by different coronaviruses of importance in humans and animals, and specific treatments are extremely limited. ERS, which can activate the UPR to modulate viral replication and the host innate response, is a frequent occurrence in coronavirus-infected cells. PHEV, a neurotropic betacoronavirus, causes nerve cell damage, which accounts for the high mortality rates in suckling piglets. However, it remains incompletely understood whether the highly developed ER in nerve cells plays an antiviral role in ERS and how ERS regulates viral proliferation. In this study, we found that PHEV infection induced ERS and activated the UPR both in vitro and in vivo and that the activated PERK/PKR-eIF2α axis inhibited PHEV replication through attenuating global protein translation and promoting SG formation. A better understanding of coronavirus-induced ERS and UPR activation may reveal the pathogenic mechanism of coronavirus and facilitate the development of new treatment strategies for these diseases.

Journal of Virology published new progress about 2323027-38-7. 2323027-38-7 belongs to isoxazole, auxiliary class Metabolic Enzyme,ATF/CREB proteins, name is N-(1-(2,4-Bis(trifluoromethyl)benzyl)-1H-pyrazol-4-yl)-5-(furan-2-yl)isoxazole-3-carboxamide, and the molecular formula is C11H15NO2, Application In Synthesis of 2323027-38-7.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Yang, Ting published the artcileEffects of rTMS combined with rPMS on stroke patients with arm paralysis after contralateral seventh cervical nerve transfer: a case-series, Computed Properties of 198470-85-8, the publication is International Journal of Neuroscience, database is CAplus and MEDLINE.

We conducted this study to evaluate the effect of rTMS combined with rPMS on stroke patients with arm paralysis after CSCNTS. A case-series of four stroke patients with arm paralysis, ages ranging from 39 to 51 years, that underwent CSCNTS was conducted. Patients were treated with 10 HZ rTMS on the contralesional primary motor cortex combined with 20 HZ rPMS on groups of elbow and wrist muscles for 15 days. The muscle tone of elbow flexor muscle (EFM), elbow extensor muscle (EEM), wrist flexor muscle (WFM) and flexor digitorum (FD) reduced immediately after operation followed by increasing gradually. After rehabilitation, the muscle tone of EEM and EFM reduced by 14% and 11%, resp. There was a 13% and 45% change ratio in WFM and FD. The numeric rating scale (mean = 5.75 ± 1.71) was significantly lower (mean = 3.25 ± 1.90, t = 8.66, p = .00). Grip and pinch strength (mean = 23.65 ± 4.91; mean = 4.9 ± 0.59) were significantly higher (mean = 34.63 ± 5.23, t = -61.07, p = .00; mean = 7.1 ± 0.73, t = -13.91, p = .00). The rehabilitation of stroke patients with arm paralysis after CSCNTS is a long, complicated process which includes great change of neuropathic pain, muscle tone, and muscle strength. In order to enhance the neural connection between the contralesional hemisphere and the hemiplegic limb, alleviate postoperative complications, as well as accelerate the rehabilitation process, we can consider to use rTMS combined with rPMS.

International Journal of Neuroscience published new progress about 198470-85-8. 198470-85-8 belongs to isoxazole, auxiliary class Immunology/Inflammation,COX, name is Sodium ((4-(5-methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)(propionyl)amide, and the molecular formula is C25H29N9O3, Computed Properties of 198470-85-8.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem

Yang, Lihua published the artcileInfluence of parecoxib sodium on stress, inflammatory response and postoperative analgesia in patients undergoing radical resection of esophageal cancer, COA of Formula: C19H17N2NaO4S, the publication is Zhonghua Shiyan Waike Zazhi (2015), 32(9), 2302-2303, database is CAplus.

Influence of parecoxib sodium on plasma Cor, β-EP, PGE2, TNF-α and IL-6 in patients undergoing radical resection of esophageal cancer was observed Sixty cases with radical resection of esophageal cancer were chosen and randomly divided into parecoxib sodium group (P) and control group (C). Plasma Cor, β-EP, PGE2, TNF-α and IL-6 were determined before induction (T1), 2 h during surgery(T2), end of surgery (T3), 12 h (T4), 24 h (T5), 48 h (T6) after surgery. Indexes in P group were significantly lower than those in C group. Parecoxib sodium could alleviate stress response, weaken peripheral and central sensitization and alleviate inflammatory response.

Zhonghua Shiyan Waike Zazhi published new progress about 198470-85-8. 198470-85-8 belongs to isoxazole, auxiliary class Immunology/Inflammation,COX, name is Sodium ((4-(5-methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)(propionyl)amide, and the molecular formula is C9H8BNO2, COA of Formula: C19H17N2NaO4S.

Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem