Month: February 2023

Direct detection of nitrotyrosine-containing proteins using an aniline-based oxidative coupling strategy was written by Sangsuwan, Rapeepat;Obermeyer, Allie C.;Tachachartvanich, Phum;Palaniappan, Krishnan K.;Francis, Matthew B.. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2016.Application of 3326-34-9 This article mentions the following:

A convenient two-step method is described for the detection of nitrotyrosine-containing proteins. First, nitrotyrosines are reduced to aminophenols using sodium dithionite. Following this, an oxidative coupling reaction is used to attach anilines bearing fluorescence reporters or affinity probes. Features of this approach include fast reaction times, pmol-level sensitivity, and excellent chemoselectivity. In the experiment, the researchers used many compounds, for example, 5-Amino-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 3326-34-9Application of 3326-34-9).

5-Amino-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 3326-34-9) belongs to benzofurans derivatives. Many natural or synthetic compounds containing benzofuran skeletons have been found to possess remarkable activity as agrochemicals and pharmaceuticals. Introduction of benzofurans in organic synthesis, particularly drug synthesis, involves generally the use of their metalated species as nucleophiles in addition reactions or in metal-catalysed cross-coupling reactions.Application of 3326-34-9

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Evaluation of health related quality of life with rifaximin and probiotics in the patients of diarrhea predominant irritable bowel syndrome was written by Deswal, Himani;Goyal, Sarita;Goyal, Sandeep;Gupta, M. C.. And the article was included in World Journal of Pharmacy and Pharmaceutical Sciences in 2021.Product Details of 80621-81-4 This article mentions the following:

Irritable bowel syndrome (IBS), is the most common functional gastro-intestinal disorder, though non-life-threatening but it has an important impact on patient’s quality of life and healthcare system. As such no diagnostic marker exists for IBS-D, therefore HRQoL becomes a very important measure of health status in these patients. This study aim is to evaluate whether rifaximin and VSL#3 improves the QOL-IBS after treatment in the patients of IBS-D. It was an open-label, parallel group, prospective, randomized and comparative study, in 94 patients diagnosed with IBS-D using ROME IV criteria, who were divided into two groups with either tab rifaximin 550 mg BD or tab VSL#3 BD for 14 days. Assessment was done by using IBS-QOL at baseline, 2weeks, 4weeks and 6weeks after treatment. Both rifaximin and VSL#3 were found to be effective in IBS-QOL improving after treatment. Improvement in IBS-QOL from baseline was equivalent i.e 26% (p = 0.244) at 2 wk in both the groups which increased to 37% and 36% (p = 0.317) of patients with rifaximin and VSL#3 resp. At 6 wk there is significant improvement with 42% of patients in rifaximin group as compared to 33% in the VSL#3 group (p = 0.045). Both rifaximin and VSL#3 were found to improve IBS-QOL after treatment in the patients of IBS-D. In the experiment, the researchers used many compounds, for example, (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-e]pyrido[1,2-a]benzimidazole-1,15(2H)-dione (cas: 80621-81-4Product Details of 80621-81-4).

(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-e]pyrido[1,2-a]benzimidazole-1,15(2H)-dione (cas: 80621-81-4) belongs to benzofurans derivatives. Benzofuran derivatives are one of the most important oxygen-containing heterocycles. As benzofurans are prone to undergo ring opening of the heterocycle, examples of reduction of this type of aromatics by using dissolving metals are rather scarce.Product Details of 80621-81-4

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Water-soluble constituents of Clerodendranthus spicatus was written by Wang, Min;Liang, Jing-Yu;Chen, Xue-Ying. And the article was included in Zhongguo Tianran Yaowu in 2007.HPLC of Formula: 875313-64-7 This article mentions the following:

AIM: To study the water-soluble constituents of the aerial parts of Clerodendranthus spicatus. METHOD: The water soluble fractions were subjected to a series of chromatog. separation methods to afford six caffeic acid depsides, as well as free caffeic acid. Their structures were elucidated mainly by spectroscopic methods. RESULT: Seven compounds: caffeic acid (1), rosmarinic acid (2), Me rosmarinate (3), Me lithospermate (4) and di-Me lithospermate (5), Me lithospermate B (6), di-Me lithospermate B (7) have been isolated from Clerodendranthus spicatus. CONCLUSION: Compounds 3 ∼ 7 have been isolated from this plant for the first time. In the experiment, the researchers used many compounds, for example, (R)-3-(3,4-Dihydroxyphenyl)-1-methoxy-1-oxopropan-2-yl (2S,3S)-2-(3,4-dihydroxyphenyl)-4-((E)-3-(((R)-3-(3,4-dihydroxyphenyl)-1-methoxy-1-oxopropan-2-yl)oxy)-3-oxoprop-1-en-1-yl)-7-hydroxy-2,3-dihydrobenzofuran-3-carboxylate (cas: 875313-64-7HPLC of Formula: 875313-64-7).

(R)-3-(3,4-Dihydroxyphenyl)-1-methoxy-1-oxopropan-2-yl (2S,3S)-2-(3,4-dihydroxyphenyl)-4-((E)-3-(((R)-3-(3,4-dihydroxyphenyl)-1-methoxy-1-oxopropan-2-yl)oxy)-3-oxoprop-1-en-1-yl)-7-hydroxy-2,3-dihydrobenzofuran-3-carboxylate (cas: 875313-64-7) belongs to benzofurans derivatives. Benzofuran is a core structural unit found in many naturally occurring compounds with multidirectional biological activities. Benzofurans have also made significant and distinctive contributions to biology. They exhibit several biological activities that range from antioxidant, antitubercular, antiplasmodial, insecticidal.HPLC of Formula: 875313-64-7

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Dynamic changes of volatile and phenolic components during the whole manufacturing process of Wuyi Rock tea (Rougui) was written by Liu, Zhibin;Chen, Fuchen;Sun, Jinyuan;Ni, Li. And the article was included in Food Chemistry in 2022.Safety of 2,3-Dihydrobenzo[b]furan This article mentions the following:

Wuyi Rock tea (WRT), a top-ranking oolong tea, possesses characteristic woody, floral, nutty flavor. WRT flavor is mainly formed during the manufacturing process. However, details regarding its formation process are not fully understood yet. In this study, the dynamics of volatile and phenolic components over the whole manufacturing process of WRT were investigated. During withering, despite minor changes in volatile and phenolic components, the central vacuole shrunk remarkably, which reduced the cell mech. performance and facilitated the subsequent enzymic fermentation During fermentation, approx. 78% of flavan-3-ols in fresh tea leaves were oxidized and converted to a diverse mixture of highly heterogeneous oxidation products, such as theaflavins, whereas flavonols, phenolic acids, and xanthine alkaloids remained stable throughout the manufacturing process. Aldehydes, ketones, and heterocyclic compounds, imparting woody, floral, and nutty scent, were mainly formed during the roasting steps. This detailed information can expand our understanding on the formation of WRT flavor. In the experiment, the researchers used many compounds, for example, 2,3-Dihydrobenzo[b]furan (cas: 496-16-2Safety of 2,3-Dihydrobenzo[b]furan).

2,3-Dihydrobenzo[b]furan (cas: 496-16-2) belongs to benzofurans derivatives.Benzofuran is one of the most significant oxygen-containing heterocycles consisting of fused benzene and furan ring, which are widely presented in various naturally occurring and synthetically active compounds. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.Safety of 2,3-Dihydrobenzo[b]furan

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Retrospective analysis of adverse events with mycophenolate mofetil and methotrexate when used for dermatologic indications was written by Wang, Yu;Jorizzo, Joseph. And the article was included in International Journal of Dermatology in 2022.Recommanded Product: (E)-6-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydroisobenzofuran-5-yl)-4-methylhex-4-enoic acid This article mentions the following:

MMF and methotrexate are low-cost agents that can be used to treat numerous autoimmune dermatol. conditions but are often underutilized due to the lack of data regarding its side-effect profile when used in low doses. Monitoring laboratories should not be drawn within 24 h after patients weekly dosage of methotrexate or within 24 h of alc. ingestion to avoid confounding elevation in LFT. The more concerning adverse events associated with methotrexate are its immunosuppressive effects and liver toxicity. MMF and methotrexate are safe and effective medications for the treatment of autoimmune dermatol. conditions. Correcting for age-related decline in renal function and interactions with sulfate medications can help reduce the rate of adverse events associated with methotrexate. In the experiment, the researchers used many compounds, for example, (E)-6-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydroisobenzofuran-5-yl)-4-methylhex-4-enoic acid (cas: 24280-93-1Recommanded Product: (E)-6-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydroisobenzofuran-5-yl)-4-methylhex-4-enoic acid).

(E)-6-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydroisobenzofuran-5-yl)-4-methylhex-4-enoic acid (cas: 24280-93-1) belongs to benzofurans derivatives. Benzofuran derivatives have shown many biological activities, including antifungal and antimicrobial properties, and acting as antagonists of H3 receptors and angiotensin II. As benzofurans are prone to undergo ring opening of the heterocycle, examples of reduction of this type of aromatics by using dissolving metals are rather scarce.Recommanded Product: (E)-6-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydroisobenzofuran-5-yl)-4-methylhex-4-enoic acid

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Clostridioides (Clostridium) difficile isolated from paediatric patients in Western Australia 2019-2020 was written by Perumalsamy, Sicilia;Lim, Su Chen;Riley, Thomas V.. And the article was included in Pathology in 2022.Name: (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-e]pyrido[1,2-a]benzimidazole-1,15(2H)-dione This article mentions the following:

Less is understood about the epidemiol. of Clostridioides difficile infection (CDI) in children compared to adults, and its impact is complicated by variations in the natural development of infection in paediatric patients. The interplay of rising CDI incidence in hospitalised paediatric patients, emergence of hypervirulent strains and community associated CDI (CA-CDI) in the past decade is a potential threat in both hospital and community settings. Research in Australia regarding paediatric CDI is limited. Here, we report the mol. characterization of C. difficile isolated from paediatric patients at a tertiary hospital in Perth, Western Australia. A total of 427 stool samples was collected from patients aged from <1 to 17 years being investigated for diarrhoea from July 2019 to June 2020. Stool specimens were cultured and isolates of C. difficile characterised by ribotyping and toxin gene profiling. Clostridioides difficile was recovered from 84/427 (19.7%) samples tested. The most prevalent PCR ribotypes (RTs) were RT 002 (12.4%), a toxigenic strain, and RT 009 (15.7%), a non-toxigenic strain. Interestingly, C. difficile RT 078 and RT 017, strains that are not endemic in Australia, were isolated from a 1- and 4-yr-old child, resp. Clostridioides difficile RT 106, a strain of emerging importance in Australia, was recovered from two cases (5.3%). Resistance to metronidazole, fidaxomicin, amoxicillin, rifaximin and meropenem was not detected, however, 45 isolates (50.6%) showed resistance to at least one agent, and multidrug resistance was observed in 13.3% of the resistant isolates (6/45). This study provides a baseline for future surveillance of paediatric CDI in Australia. Given that young children can be asymptomatically colonised with toxigenic C. difficile strains, they represent a potential reservoir of strains causing CDI in adults. In the experiment, the researchers used many compounds, for example, (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-e]pyrido[1,2-a]benzimidazole-1,15(2H)-dione (cas: 80621-81-4Name: (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-e]pyrido[1,2-a]benzimidazole-1,15(2H)-dione).

(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-e]pyrido[1,2-a]benzimidazole-1,15(2H)-dione (cas: 80621-81-4) belongs to benzofurans derivatives. Benzofuran derivatives have shown many biological activities, including antifungal and antimicrobial properties, and acting as antagonists of H3 receptors and angiotensin II. Introduction of benzofurans in organic synthesis, particularly drug synthesis, involves generally the use of their metalated species as nucleophiles in addition reactions or in metal-catalysed cross-coupling reactions.Name: (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-e]pyrido[1,2-a]benzimidazole-1,15(2H)-dione

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Variation of 4 kinds of compounds in psoralea corylifolia processed by different methods was written by Song, Xiao;Qi, Aidi;Wang, Yuefei;Jing, Yakun;Chai, Xin;Liu, Yanan. And the article was included in Zhongguo Zhongyao Zazhi in 2011.Safety of (Z)-3-(6-(((2S,3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)benzofuran-5-yl)acrylic acid This article mentions the following:

An efficient method for simultaneous quantification of 7 compounds belonging to 4 chem. types in Psoralea corylifolia processed by different methods was presented to elucidate variations of 4 kinds of compounds in different processed P. corylifolia. The chromatog. separation was performed on an ACUITY C₁₈ column using acetonitrile and 0.1% formic acid aqueous solution in the gradient elution at 0.4 mL/min^-1. Detection wavelength was set at 246 nm. Column temperature was fixed at 50°. The 4 kinds of compounds, including psoralenoside, isopsoralenoside (benzofuran glycosides), psoralen, isopsoralen, psoralidin (coumarins), bavachin (flavonoids), and bakuchiol (meroterpenes), were separated in 25 min. The correlation coefficients of those compounds were over 0.999 3 in the tested range. The intra-and inter-day precisions were below 1.5%. The average recoveries ranged from 99.2% to 106%. This method is simple, rapid, and accurate, which can be used for the determination of the 4 kinds of compounds in different processed P. corylifolia. In P. corylifolia processed by different methods, the contents of benzofuran glycosides, flavonoids, and meroterpenes in P. corylifolia processed by Leigong’s method are decreased obviously, while the contents of psoralen and isopsoralen are increased significantly. In the experiment, the researchers used many compounds, for example, (Z)-3-(6-(((2S,3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)benzofuran-5-yl)acrylic acid (cas: 905954-17-8Safety of (Z)-3-(6-(((2S,3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)benzofuran-5-yl)acrylic acid).

(Z)-3-(6-(((2S,3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)benzofuran-5-yl)acrylic acid (cas: 905954-17-8) belongs to benzofurans derivatives. Benzofuran is the “”parent”” of many related compounds with more complex structures. For example, psoralen is a benzofuran derivative that occurs in several plants. They are also prone to polymerisation in the presence of concentrated mineral acids and Lewis acids.Safety of (Z)-3-(6-(((2S,3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)benzofuran-5-yl)acrylic acid

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Ultrabright dye-loaded spherical polyelectrolyte brushes and their fundamental structure-fluorescence tuning principles was written by Masoomi, Hajar;Wang, Yao;Fang, Xiaoxia;Wang, Peirui;Chen, Cang;Liu, Kai;Gu, Hongchen;Xu, Hong. And the article was included in Nanoscale in 2019.Reference of 3326-34-9 This article mentions the following:

Ultrabright fluorescent particles (UFPs) have attracted increasing attention because of their outstanding signal amplification functions. However, there is still an urgent demand for designing novel UFPs with new components or structures as the existing ones can not satisfy the practical requirements due to their inherent disadvantages. Here we propose a novel ultrabright fluorescent particle platform by doping dyes of 5-aminofluorescein (5-AF) into silica core-based spherical poly (acrylic acid) brushes (SiO2@PAA@5-AF) and discuss their fundamental structure-fluorescence tuning principles. A series of brushes with different polymer chain lengths are successfully synthesized and then loaded with 5-AF through chem. binding. The high loading amount, suitable d. or distribution, and enhanced quantum yield (QY) of 5-AF due to the amide bond formation with PAA chains on brushes are concluded as the three major reasons for the ultrabrightness of SiO2@PAA@5-AF. Therefore, a 2350 ± 445 times brighter brush particle in comparison to a single quantum dot (QD) is realized, and a 2.1 ∓ 0.4 times fluorescence improvement of a brush vs. a QD normalized by volume is also achieved when taking the hydrodynamic diameter into consideration (~300 nm vs. ~30 nm). Moreover, the excellent tolerance stabilities in normally applied environments and outstanding label effects to form 4-plexed encoded beads are demonstrated as well. The results in this work strongly indicate a promising potential of SiO2@PAA@5-AF as an ultrabright and stable signal amplification tool for biomedical related sensing, labeling, and biodetection. In the experiment, the researchers used many compounds, for example, 5-Amino-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 3326-34-9Reference of 3326-34-9).

5-Amino-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 3326-34-9) belongs to benzofurans derivatives. Benzofuran is the “”parent”” of many related compounds with more complex structures. For example, psoralen is a benzofuran derivative that occurs in several plants. In nature, benzofurans have occupied an important role among the plant phenols & several pharmacologically active compounds.Reference of 3326-34-9

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Comparison of solid phase- and liquid/liquid-extraction for the purification of hair extract prior to multi-class pesticides analysis was written by Duca, Radu-Corneliu;Salquebre, Guillaume;Hardy, Emilie;Appenzeller, Brice M. R.. And the article was included in Journal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences in 2014.Computed Properties of C10H12O2 This article mentions the following:

The present study focuses on the influence of a purification step – after extraction of pesticides from hair and before anal. of the extract – on the sensitivity of anal. methods including compounds from different chem. classes (both parent and metabolites). Sixty-seven pesticides and metabolites from different chem. classes were tested here: organochlorines, organophosphates, carbamates, pyrethroids, ureas, azoles, phenylpyrazoles and neonicotinoids. Two gas chromatog.-neg. chem. ionization-tandem mass spectrometry methods and one based on ultra-performance liquid chromatog.-electrospray tandem mass spectrometry were used. Seven solid-phase extraction cartridges: C18, S-DVB, PS-DVB, GCB, GCB/PSA, SAX/PSA and Florisil/PSA were tested and compared to more classical liquid-liquid extraction procedures using Et acetate, hexane and dichloromethane. Although LLE allowed obtaining good results for some compounds, on the whole, SPE clearly provided better recovery for the majority of the pesticide residues tested in the present study. GCB/PSA was clearly the best suited to nonpolar compounds such as organochlorines, pyrethroids and organophosphates, with recovery ranging from 45.9% (diflufenican) to 117.1% (parathion methyl). For hydrophilic metabolites (e.g. dialkyl phosphates and other organophosphate metabolites, pyrethroid metabolites, phenols and carbamate metabolites), the best results were obtained with PS-DVB, with recovery ranged from 10.3% (malathion monocarboxylic acid) to 93.1% (p-nitrophenol). For hydrophilic parent pesticides (e.g. neonicotinoids, carbamates, azoles) and metabolites without nucleophilic functions, the best recovery was obtained with SAX/PSA, with recovery ranging from 52.1% (3-hydroxycarbofuran) to 100.9% (3,4-dichloroaniline). Solid phase extraction was found to be more suitable than the liquid-liquid extraction for pesticides and their metabolites determination in terms of number of extracted compounds and their recovery. Moreover, the use of solid phase extraction cartridges has enabled the reduction of the anal. background noise, resulting in better chromatog. separations In the experiment, the researchers used many compounds, for example, 2,2-Dimethyl-2,3-dihydrobenzofuran-7-ol (cas: 1563-38-8Computed Properties of C10H12O2).

2,2-Dimethyl-2,3-dihydrobenzofuran-7-ol (cas: 1563-38-8) belongs to benzofurans derivatives. Benzofuran derivatives have shown many biological activities, including antifungal and antimicrobial properties, and acting as antagonists of H3 receptors and angiotensin II. Introduction of benzofurans in organic synthesis, particularly drug synthesis, involves generally the use of their metalated species as nucleophiles in addition reactions or in metal-catalysed cross-coupling reactions.Computed Properties of C10H12O2

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Anti-atopic dermatitis effects of dictamni cortex: Studies on in vitro and in vivo experimental models was written by Chen, Yunlong;Xian, Yan-Fang;Loo, Steven;Chan, Wood Yee;Liu, Ling;Lin, Zhi-Xiu. And the article was included in Phytomedicine in 2021.Application of 28808-62-0 This article mentions the following:

Dictamni Cortex (DC), a Chinese herbal medicine with wind dispelling and itchiness relieving effects, is the most popular single herb prescribed for the treatment of atopic dermatitis (AD), as it is used in up to 12.68% of all herbal prescriptions for AD. The present study aimed to evaluate the anti-AD effect of Dictamni Cortex extract (DCE) and elucidate the underlying mol. mechanisms of its action using the 1-chloro-2,4-dinitrobenzene (DNCB)-induced AD-like mouse model and a relevant in vitro exptl. model. Female Balb/c mice were sensitized with 200μl 0.5% DNCB for three days. After sensitization, mice were challenged with 200μl 1% DNCB on the same dorsal skin and also 20μl 1% DNCB on each ear every 3 days, and orally administrated by gavage with DCE (0.6, 1.2 and 2.4 g/kg) daily from day 14 to day 29 for 16 consecutive days. At the end of experiment, the clin. scores for AD on the mice were calculated to evaluate the therapeutic effect of DCE; and serum, ears and dorsal skin of the mice were collected for mechanistic study. The anti-allergic activity of DCE was also evaluated using antigen-induced RBL-2H3 cell line. The release of selected cytokines, chemokines and β-hexosaminidase was measured to determine the anti-allergic activity of DCE. In addition, intracellular Ca²⁺ level, MAPKs and Lyn phosphorylations were further investigated to reveal its anti-allergic mol. mechanisms. Our results demonstrated that DCE could markedly improve the AD-like symptoms in AD-like mice by inhibiting the mast cell infiltration, suppressing the production of Th2-associated cytokine (IL-4) and pro-inflammatory cytokines (TNF-α), and enhancing the protein expression of filaggrin through inhibition of the MAPKs and NF-κB pathways. Moreover, DCE suppressed mast cell degranulation through decreasing the intracellular Ca²⁺ level and inactivation of Lyn, Syk and PLCγs, suggesting DCE could regulate mast-cell-mediated allergic response. Our exptl. results unambiguously indicate that DCE possesses potent anti-allergic effect, and help place the application of DC for the treatment of AD on a scientific footing. In the experiment, the researchers used many compounds, for example, (3R,3aR)-3-(Furan-3-yl)-3a,7-dimethyl-3a,4,5,6-tetrahydroisobenzofuran-1(3H)-one (cas: 28808-62-0Application of 28808-62-0).

(3R,3aR)-3-(Furan-3-yl)-3a,7-dimethyl-3a,4,5,6-tetrahydroisobenzofuran-1(3H)-one (cas: 28808-62-0) belongs to benzofurans derivatives. Many natural or synthetic compounds containing benzofuran skeletons have been found to possess remarkable activity as agrochemicals and pharmaceuticals. As benzofurans are prone to undergo ring opening of the heterocycle, examples of reduction of this type of aromatics by using dissolving metals are rather scarce.Application of 28808-62-0

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem