Brief introduction of 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione

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Theoretical and experimental NMR study of protopine hydrochloride isomers

The 1H and 13C NMR chemical shifts of cis- and trans-protopinium salts were measured and calculated. The calculations of the chemical shifts consisted of conformational analysis, geometry optimization (RHF/6-31G** method) and shielding constants calculations (B3LYP/6-31G** method). Based on the results of the quantum chemical calculations, two sets of experimental chemical shifts were assigned to the particular isomers. According to the experimental results, the trans-isomer is more stable and its population is ?68%. Copyright

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New explortion of 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione

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In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Product Details of 1081-17-0, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 1081-17-0, name is 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione. In an article£¬Which mentioned a new discovery about 1081-17-0

Benzylisoquinoline alkaloids from the tubers of Corydalis ternata and their cytotoxicity

Chemical investigation of the tubers of Corydalis ternata resulted in the isolation and characterization of four new benzylisoquinoline alkaloids, epi-coryximine (1) and coryternatines A-C (2-4), along with 10 known alkaloids (5-14). Their structures were established on the basis of extensive spectroscopic data analyses and comparison with spectroscopic data reported. In addition, the cytotoxicities of the alkaloids (1-14) were evaluated by determining their inhibitory effects on several human tumor cell lines (A549, SK-OV-3, SK-MEL-2, and HCT-15) using the SRB assay. Compound 8 showed significant cytotoxicity against A549, SK-OV-3, SK-MEL-2, and HCT-15 cell lines (IC50 = 8.34, 5.14, 7.87, and 2.86 muM, respectively). The four new compounds (1-4) exhibited selective cytotoxicity against the HCT-15 cell line.

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Extracurricular laboratory:new discovery of 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione

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One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, Quality Control of 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 1081-17-0, Name is 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione, molecular formula is C11H9NO3

Metabolomics study on the toxicity of Annona squamosa by ultraperformance liquid-chromatography high-definition mass spectrometry coupled with pattern recognition approach and metabolic pathways analysis

Ethnopharmacological relevance Annona squamosa Linn (Annonaceae) is a commonly used and effective traditional Chinese medicine (TCM) especially in the South China. The seeds of Annona squamosa Linn (SAS) have been used as a folk remedy to treat “malignant sores” (cancer) in South of China, but they also have high toxicity on human body. Aim of the study To discover the potential biomarkers in the mice caused by SAS. Materials and methods We made metabonomics studies on the toxicity of SAS by ultraperformance liquid-chromatography high-definition mass spectrometry coupled with pattern recognition approach and metabolic pathways analysis. Results The significant difference in metabolic profiles and changes of metabolite biomarkers between the Control group and SAS group were well observed. 11 positive ions and 9 negative ions (P<0.05) were indicated based on UFLC-QTOF-HDMS. The metabolic pathways of SAS group are discussed according to the identified endogenous metabolites, and eight metabolic pathways are identified using Kyoto Encyclopedia of Genes and Genomes (KEGG). Conclusions The present study demonstrates that metabonomics analysis could greatly facilitate and provide useful information for the further comprehensive understanding of the pharmacological activity and potential toxicity of SAS in the progress of them being designed to a new anti-tumor medicine. One of the oldest and most widely used commercial enzyme inhibitors is aspirin, Quality Control of 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 1081-17-0

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Simple exploration of 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione

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Nematocidal activity of isoquinoline alkaloids against a species of Diplogastridae

We examined the nematocidal activity of various isoquinoline alkaloids. The method of evaluating nematocidal activity involved the microscopic examination of the state of larvae after the compound was administered to determine the minimum lethal concentration (MLC). In addition, cytotoxic activity (IC50) was examined using HL-60 culture cells. The compound dehydrocorydaline was found to have considerable nematocidal activity and weak cytotoxicity; its cytotoxicity value was equal to that of thiabendazole. We conclude that dehydrocorydaline, with its attractive balance between nematocidal activity and weak cytotoxicity, is the most promising of the tested compounds as a possible remedy for parasitic diseases.

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A new application about 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione

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Characterization of aromatase binding agents from the dichloromethane extract of Corydalis yanhusuo using ultrafiltration and liquid chromatography tandem mass spectrometry

Aromatase represents an important target for the treatment of hormone-dependent breast cancer. In the present study, nine alkaloids from the dichloromethane extract of Corydalis yanhusuo were identified by liquid chromatography tandem mass spectrometry (LC-MS/MS) and tested for their aromatase binding activities using an ultrafiltration LC-MS method by investigating the differences of peak areas of compounds before and after incubations with aromatase. It was demonstrated that the quaternary protoberberine alkaloids and the tertiary protoberberine alkaloids exhibited potent aromatase binding activities. The quaternary ammonium group and the methyl group at C-13 position of tertiary protoberberine alkaloids might be necessary for the activity. The findings should provide guidance for the discovery of potential aromatase inhibitors from natural products.

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ALKALOIDS FROM Papaver bracteatum LINDL.

N-Methylthebainium (as iodide) and corytuberine were isolated from the roots and green aerial parts of Papaver bracteatum LINDL., thebaine race Halle III, as significant alkaloids in addition to the predominant alkaloid thebaine (0.61 and 0.23percent respectively),as well as the minor alkaloids isothebaine, scoulerine, protopine, epialpine (O-methylalpinigine), N-methylisothebainium (as iodide), isoboldine, corydine, rhoeadine, magnoflorine, a mixture of coptisine and palmatine and a new alkaloid PB 1 C18H19NO4.Bracteoline and papaverrubines G, E, D and C were detected chromatographically.From the ripe capsules of the race Halle III N-methylthebainium (as perchlorate), corytuberine and a mixture of coptisine and palmatine were isolated in addition to thebaine (0.67percent).From the ripe capsules of P. bracteatum, population Demavend (Iran), thebaine (0.56percent), epialpine, alpinigine, corytuberine, N-methylthebainium (as iodide) and a mixture of coptisine and palmatine were isolated and the presence of papaverrubines G, D and C was detected.In the latex of flowering plants salutaridine was also detected.Fourteen of the mentioned alkaloids were detected in the species P. bracteatum for the first time.

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Discovery of 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione

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New tetrahydroprotoberberine N-oxide alkaloids and cytotoxic constituents of Corydolis tashiroi

Three new tetrahydroprotoberberine N-oxide alkaloids, (-)-cis- corydalmine N-oxide (1), (-)-trans-corydalmine N-oxide (2), and (-)-trans- isocorypalmine N-oxide (3), along with three known benzo[c]phenanthridine alkaloids, norsanguinarine (4), dihydrosanguinarine (5), and oxysanguinarine (6), six known berberine alkaloids, (-)-tetrahydropalmatine (7), (- )corydalmine (8), (-)-scoulerine (9), (-)-corynoxidine (10), (- )epicorynoxidine (11), palmatine (12), and protopine (13), have been isolated from the herb Corydalis tashiroi. The structures of these compounds were elucidated by spectroscopic analysis. Three of the isolated compounds show significant cytotoxic activities (ED50 values < 4 mug/ml) against P-388, KB16, A549, and HT-29 cell lines. We¡¯ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 1081-17-0, and how the biochemistry of the body works.Application of 1081-17-0

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HOFMANN ELIMINATION WITH DIAZOMETHANE ON QUATERNARY BENZYLTETRAHYDROISOQUINOLINE RELATED ALKALOIDS

The investigation have been made to the reaction of a large excess of diazomethane on the quaternary benzyltetrahydroisoquinoline related alkaloids, aporphines, benzyltetrahydroisoquinolines, pavines and protopine.From the structural elucidation of the reaction products, it has been found that the first and second Hofmann elimination proceeded.

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Simple exploration of 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Computed Properties of C11H9NO3, you can also check out more blogs about1081-17-0

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments. Computed Properties of C11H9NO3. Introducing a new discovery about 1081-17-0, Name is 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione

ALKALOIDS OF Corydalis stricta

The alkaloids of the epigeal part and roots of Corydalis stricta have been studied.Of the 23 alkaloids isolated, N-methylcorypalline proved to be new, and its structure has been determined.Stilopine hydroxymethylate and pycnarrhine have been isolated from the genus Corydalis for the first time, and cheilanthiofoline isocorypalmine, scoulerine, isoboldine, reticuline, N-methylcoclaurine, coreximine, juziphine, pancorydine, corypalline, wilsonirine, stilopine, adlumidine, dihydrosanguinarine, adlumine, and bicucculine have been isolated from this species of plant for the first time.

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Alkaloids from Chelidonium majus and their inhibitory effects on LPS-induced NO production in RAW264.7 cells

A new alkaloid, methyl 2?-(7,8-dihydrosanguinarine-8-yl)acetate (1), together with six known alkaloids, stylopine (2), protopine (3), norchelidonine (4), chelidonine (5), berberine (6), and 8-hydroxydihydrosanguinarine (7), were isolated from Chelidonium majus. Their chemical structures were primarily established using 1D and 2D NMR techniques and mass spectrometry. The anti-inflammatory activity of the isolates was examined for their inhibitory effects on LPS-induced NO production in macrophage RAW264.7 cells. Among them, compounds 5 and 7 showed strong inhibitory activities toward the LPS-induced NO production in macrophage RAW264.7 cells with IC50 values of 7.3 and 4.5 muM, respectively. In addition, compounds 5 and 7 inhibited the inductions of COX-2 and iNOS mRNA in dose-dependent manners, indicating that these compounds attenuated the syntheses of these transcripts at the transcriptional level.

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