Category: isoquinoline

Kumar, Jagdeep published the artcileAntioxidant properties of ethenyl indole: DPPH assay and TDDFT studies, Recommanded Product: 4-Methoxyphenylacetic acid, the main research area is phenylethenyl indole preparation antioxidant ionization potential UV spectra.

A series of ethenyl indoles (e.g. 3-(4-substituted phenylethenyl-E)-N-H-indole) with various donor or acceptor substituents have been synthesized and their antioxidant properties have been studied. Ethenyl indoles exhibit antioxidant activity in a substituent dependent manner. Ethenyls bearing strong electron withdrawing substituents show weak or no antioxidant activity, whereas ethenyls with electron donating substituents exhibit antioxidant properties comparable to vitamin E. It can be seen from a plot of the percentage of inhibition vs. the antioxidant concentration, that the hydroxy substituted ethenyl indole exhibits good antioxidant properties (50% inhibition concentration (IC50) âˆ?24μM) as compared to the other ethenyls (IC50: 30-63μM) and that it is comparable to vitamin E (IC50 âˆ?26μM). The results are also supported by the computational data obtained through time dependent d. functional theory (TDDFT) calculations From the TDDFT and antioxidant study, it was shown that there is a correlation between the HOMO-LUMO energy, the ground state dipole moment, optical band gap, bond dissociation enthalpy and the ionization potential of the ethenyls with the antioxidant properties. A possible hydrogen and/or electron and proton transfer mechanism is suggested for the quenching of the free radical.

New Journal of Chemistry published new progress about Antioxidants. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Recommanded Product: 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Popova, Svetlana A. published the artcileIsobornylchalcones as scaffold for the synthesis of diarylpyrazolines with antioxidant activity, Related Products of isoquinoline, the main research area is diarylpyrazoline isobornylchalcone scaffold antioxidant activity; Fe2+/ascorbate-initiated lipid peroxidation; antioxidant activity; diarylpyrazolines; isobornylchalcones.

The pyrazoline ring is defined as a “”privileged structure”” in medicinal chem. A variety of pharmacol. properties of pyrazolines is associated with the nature and position of various substituents, which is especially evident in diarylpyrazolines. Compounds with a chalcone fragment show a wide range of biol. properties as well as high reactivity which is primarily due to the presence of an α, β-unsaturated carbonyl system. At the same time, bicyclic monoterpenoids deserve special attention as a source of a key structural block or as one of the pharmacophore components of biol. active mols. A series of new diarylpyrazoline derivatives based on isobornylchalcones with different substitutes (MeO, Hal, NO2, N(Me)2) was synthesized. Antioxidant properties of the obtained compounds were comparatively evaluated using in vitro model Fe2+/ascorbate-initiated lipid peroxidation in the substrate containing brain lipids of laboratory mice. It was demonstrated that the combination of the electron-donating group in the para-position of ring B and OH-group in the ring A in the structure of chalcone fragment provides significant antioxidant activity of synthesized diarylpyrazoline derivatives

Molecules published new progress about Antioxidants. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Andreucci, Michele published the artcileQuercetin protects against radiocontrast medium toxicity in human renal proximal tubular cells, Application of Diatrizoic Acid, the main research area is quercetin renal proximal tubular cell radiocontrast medium toxicity; acute kidney injury; cell injury; flavonol; kinase; signaling.

Radiocontrast media (RCM)-induced acute kidney injury (CI-AKI) is a major clin. problem whose pathophysiol. is not well understood. Direct toxic effects on renal cells, possibly mediated by reactive oxygen species, have been postulated as contributing to CI-AKI. We investigated the effect of quercetin on human renal proximal tubular (HK-2) cells treated with the radiocontrast medium (RCM) sodium diatrizoate. Quercetin is the most widely studied flavonoid, and the most abundant flavonol present in foods. It has been suggested to have many health benefits, including angioprotective properties and anti-cancer effects. These beneficial effects have been attributed to its antioxidant properties and its ability to modulate cell signaling pathways. Incubation of HK-2 cells with 100μM quercetin caused a decrease in cell viability and pre-treatment of HK-2 cells with 100μM quercetin followed by incubation with 75 mgI/mL sodium diatrizoate for 2 h caused a decrease in cell viability which was worse than in cells treated with diatrizoate alone. However, further incubation of the cells (for 22 h) after removal of the diatrizoate and quercetin caused a recovery in cell viability in those cells previously treated with quercetin + diatrizoate and quercetin alone. Anal. of signaling mols. by Western blotting showed that in RCM-treated cells receiving initial pre-treatment with quercetin, followed by its removal, an increase in phosphorylation of Akt (Ser473), pSTAT3 (Tyr705), and FoxO3a (Thr32) as well as an induction of Pim-1 and decrease in PARP1 cleavage were observed Quercetin may alleviate the longer-term toxic effects of RCM toxicity and its possible beneficial effects should be further investigated.

Journal of Cellular Physiology published new progress about Antioxidants. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Application of Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Akramov, Davlat Kh. published the artcileComparative study on the chemical composition and biological activities of the essential oils of three Lagochilus species collected from Uzbekistan, Recommanded Product: 5-Methyl-2-phenylhex-2-enal, the main research area is phytochem essential oil Lagochilus species antioxidant enzyme inhibitor; Folk medicine; GC-MS; Lagochilus; antioxidant; enzyme inhibition; essential oil.

Lagochilus species are mainly distributed in Central Asia and widely used in folk medicine as a sedative and haemostatic. The present investigation reports on the extraction by hydrodistillation and the chem. composition of three Lagochilus species (L. gypsaceus, L. inebrians and L. setulosus) essential oils from Uzbekistan. The chem. composition of these essential oils was determined by GC-MS. The results showed that the studied essential oils are made up mainly of linalool (11.97%), β-ionone (11.75%), trans-chrysanthenyl acetate (7.15%), α-terpineol (7.40%) for L. gypsaceus; trans-chrysanthenyl acetate (9.40%), eugenol (7.01%), trans-verbenol (3.85%), bicyclo[3.1.1]hept-3-en-2-one (3.76%), pinocarvone (3.43%) for L. inebrians; and finally 2,4-bis(1,1-dimethylethyl)phenol (19.78%), bicyclo[3.1.1]hept-2-en-4-ol (5.43%), hexadecanoic acid (5.39%), limonene (5.19%), 2-hexenal (5.03%) for L. setulosus. The best antioxidant and tyrosinase inhibitory activity was observed for the essential oil of L. inebrians. However, L. setulosus essential oil exhibited the strongest inhibitory effect against amylase.

Natural Product Research published new progress about Antioxidants. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Recommanded Product: 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Jeronimo, Lucas Botelho published the artcileAntioxidant and Cytotoxic Activities of Myrtaceae Essential Oils Rich in Terpenoids From Brazil, Computed Properties of 151-10-0, the main research area is Eugenia Myrcia Psidium cancer terpenoid essential oil germacrene Brazil.

This work analyzed the chem. compositions and evaluated the antioxidant and cytotoxic activities of essential oils (EO) of Eugenia patrisii (Epat), Eugenia stipitata (Esti), Myrcia splendens (Mspl), Myrcia sylvatica (Msyl), Psidium guajava (Pgua), and Psidium guineense (Pgui-1 and Pgui-2) from the Brazilian Amazon. Sesquiterpenoids were found in high concentrations in the oils of E. patrisii and M. splendens, which were rich in E-caryophyllene (32.0% and 45.8%); E. stipitata and M. sylvatica, which displayed germacrene D (11.8%) and germacrene B (24.5%); and P. guajava that showed epi-β-bisabolol (16.1%) as the main compound However, P. guineense samples (Pgui-1 and Pgui-2) were rich in monoterpenoids such as limonene (Pgui-1: 30.2%; Pgui-2 30.4%) and α-pinene (Pgui-1: 22.5%; Pgui-2: 17.7%). The samples showed a weak and moderate antioxidant activities in the DPPH assay, displaying inhibition rates from 11.5% to 38.6% (at 10 mg/mL). All samples were cytotoxic against human cancer cells by the MTT method. Epat oil showed higher activity against melanoma (SKMEL-19, IC505.8μg/mL), gastric (AGP01, IC503.2μg/mL), and colon (HCT116, IC506.7μg/mL). Meanwhile, the samples Pgua and Pgui were more active against breast cancer cells (MCF7, IC5012.4μg/mL and 11.6μg/mL, resp.).

Natural Product Communications published new progress about Antioxidants. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Computed Properties of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Li, Ge published the artcileDesign and Green Synthesis of Piperlongumine Analogs and Their Antioxidant Activity against Cerebral Ischemia-Reperfusion Injury, Formula: C9H10O3, the main research area is piperlongumine analog green synthesis antioxidant cerebral ischemia reperfusion injury; structure activity piperlongumine analog cerebral ischemia reperfusion injury; Michael acceptor; Piperlongumine analogs; antioxidation; cerebral ischemia-reperfusion injury; green synthesis; neuroprotection; stroke.

The supplementation of exogenous antioxidants to scavenge excessive reactive oxygen species (ROS) is an effective treatment for cerebral ischemia reperfusion injury (CIRI). Piperlongumine (PL) is a kind of natural product which has great potential as a neuroprotective agent, but it also has obvious neurotoxicity. Moreover, its neuroprotective effects remain to be improved. In this study, a series of novel PL analogs were designed on the foundation of the screened low-toxic diketene skeleton with antioxidation and the 3,4,5-trimethoxyphenyl group, which might increase the antioxidant activity of PL. The cytotoxicity and activity tests on a series of PL analogs I [R1 = 3,4,5-(MeO)3C6H2, R2 = 2,4-Cl2C6H3, 2-HOC6H4, piperidin-1-yl, etc.; R1 = H, R2 = 3,4,5-(MeO)3C6H2], which were synthesized by a novel green synthesis method, indicated that all of these compounds without obvious toxicity have remarkable antioxidant effects, especially compared with diketene skeletons and PL. The cytoprotection of the active compound also decreased significantly when the carbon-carbon double bonds of the mol. skeleton were reduced. More importantly, further study revealed that compound I [R1 = 3,4,5-(MeO)3C6H2, R2 = 2,4,6-(MeO)3C6H2], which has the best activity, can confer protection for cells against oxidative stress and attenuate brain injury in rats. Overall, our findings provide a promising drug candidate for the treatment of CIRI and guide the further development of drug research in oxidative stress-mediated diseases.

ACS Chemical Neuroscience published new progress about Antioxidants. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Parimala, K. published the artcileExperimental and theoretical spectroscopic properties of 2,3-Dimethoxybenzaldehyde using quantum chemical method, COA of Formula: C9H10O3, the main research area is dimethoxybenzaldehyde mol structure vibrational frequency atomic charge.

The interpretation of active functional groups have been characterized by FT-IR and FT-Raman spectroscopies with the help of potential energy distributions. Hartree-Fock (HF) calculations of the 2,3-Dimethoxybenzaldehyde (DMBA) carried out by 6-311++G(d,p) basis set. Hyperconjugative associations present in the particle were likewise evaluated utilizing normal bond orbital (NBO) examination The condensed Fukui functions explored the sites available for nucleophilic and electrophilic attack in the form of local based descriptors.

Materials Today: Proceedings published new progress about Atomic charge. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, COA of Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Hofman-Caris, C. H. M. published the artcileRemoval of pharmaceuticals from WWTP effluent: Removal of EfOM followed by advanced oxidation, Safety of Diatrizoic Acid, the main research area is pharmaceutical WWTP effluent EfOM oxidation.

Wastewater treatment plants (WWTPs) throughout the Netherlands contain significant concentrations of pharmaceuticals (25-65 μg/L) and about 10-20 mg C/L dissolved non-biodegradable organic matter. By IEX mainly the humic acid fraction of the effluent organic matter can be removed, whereas O3/biofiltration mainly removes the hydrophobic fraction. For the first time the combination of these processes with O3/H2O2, UV/H2O2 or UV/O3 was tested for the removal of pharmaceuticals from wastewater effluent. Based on initial laboratory experiments, a pilot installation was built in which IEX followed by UV/H2O2 was applied to real WWTP effluent. The process appeared to be very robust, and able to remove a very broad range of different pharmaceuticals. The addnl. costs for this treatment are estimated at approx. euro0.34/m3-treated effluent, which is in the same order of magnitude as estimated for other addnl., but less versatile, treatment processes.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Biofiltration. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Safety of Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Voelker, Johannes published the artcileExtended anaerobic conditions in the biological wastewater treatment: Higher reduction of toxicity compared to target organic micropollutants, Category: isoquinoline, the main research area is Desmodesmus Daphnia Potamopyrgus Lumbriculus wastewater treatment plant; Bioassays; Biodegradation; Chemical analysis; Pharmaceuticals; Sewage treatment; Trace pollutants.

Extended anaerobic conditions during biol. wastewater treatment may enhance the biodegradation of micropollutants. To explore this, we combined iron-reducing or substrate-limited anaerobic conditions and aerobic pilot-scale reactors directly at a wastewater treatment plant. To investigate the detoxification by these processes, we applied two in vitro bioassays for baseline toxicity (Microtox) and reactive toxicity (AREc32) as well as in vivo bioassays with aquatic model species in two laboratory experiments (Desmodesmus subspicatus, Daphnia magna) and two on-site, flow-through experiments (Potamopyrgus antipodarum, Lumbriculus variegatus). Moreover, we analyzed 31 commonly occurring micropollutants and 10 metabolites. The baseline toxicity of raw wastewater was effectively removed in full-scale and reactor scale activated sludge treatment (>85%), while the oxidative stress response was only partially removed (>61%). A combination of an anaerobic pre-treatment under iron reducing conditions and an aerobic nitrification significantly further reduced the residual in vitro toxicities by 46-60% and outperformed the second combination consisting of an aerobic pre-treatment and an anaerobic post-treatment under substrate-limiting conditions (27-43%). Exposure to effluents of the activated sludge treatment did not induce adverse in vivo effects in aquatic invertebrates. Accordingly, no further improvement in water quality could be observed Compared to that, the removal of persistent micropollutants was increased. However, this observation was restricted to a limited number of compounds and the removal of the sum concentration of all target micropollutants was relative low (14-17%). In conclusion, combinations of strictly anaerobic and aerobic processes significantly enhanced the removal of specific and non-specific in vitro toxicities. Thus, an optimization of biol. wastewater treatment can lead to a substantially improved detoxification. These otherwise hidden capacities of a treatment technol. can only be uncovered by a complementary biol. anal.

Water Research published new progress about Bioindicators. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Alhassan, Mahama published the artcileCleaving protected peptides from 2-chlorotrityl chloride resin. Moving away from dichloromethane, Name: 1,3-Dimethoxybenzene, the main research area is peptide solid phase synthesis chlorotrityl chloride resin green chem; resin cleavage green solvent TFA anisole dimethoxybenzene.

In recent years, the work of various research groups has allowed the substitution of the hazardous solvents most widely used in solid-phase peptide synthesis, namely DMF, NMP, DCM, DEE, among others, by several much less hazardous solvents. Indeed, greener alternatives have been found for almost all steps of the process, with the exception of the cleavage of protected peptides from 2-chlorotrityl chloride resin. Here, after careful screening of several of the so-called green solvents, we propose 2% TFA in either anisole or 1,3-dimethoxybenzene as optimal for the cleavage step. The higher b.p. of these solvents compared with the DCM allows the preparation of protected peptides with less risk of premature removal of the most labile protecting groups, such as the Trt of His. Our findings once again evidence the value/versatility of green solvents in strict chem. terms.

Green Chemistry published new progress about Boiling point. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Name: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem