Category: isoquinoline

Experimental and Computational Studies on the Formation of Three para-Benzyne Analogues in the Gas Phase was written by Kirkpatrick, Lindsey M.;Vinueza, Nelson R.;Jankiewicz, Bartlomiej J.;Gallardo, Vanessa A.;Archibold, Enada F.;Nash, John J.;Kenttaemaa, Hilkka I.. And the article was included in Chemistry – A European Journal in 2013.Electric Literature of C9H6IN This article mentions the following:

Exptl. and computational studies on the formation of three gaseous, pos.-charged para-benzyne analogs in a Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer are reported. The structures of the cations were examined by isolating them and allowing them to react with various neutral reagents whose reactions with aromatic carbon-centered σ-type mono- and biradicals are well understood. Cleavage of two iodine-carbon bonds in N-deuterated 1,4-diiodoisoquinolinium cation by collision-activated dissociation (CAD) produced a long-lived cation that showed nonradical reactivity, which was unexpected for a para-benzyne. However, the reactivity closely resembles that of an isomeric enediyne, N-deuterated 2-ethynylbenzonitrilium cation. A theor. study on possible rearrangement reactions occurring during CAD revealed that the cation formed upon the first iodine atom loss undergoes ring-opening before the second iodine atom loss to form an enediyne instead of a para-benzyne. Similar results were obtained for the 5,8-didehydroisoquinolinium cation and the 2,5-didehydropyridinium cation. The findings for the 5,8-didehydroisoquinolinium cation are in contradiction with an earlier report on this cation. The cation described in the literature was regenerated by using the literature method and demonstrated to be the isomeric 5,7-didehydro-isoquinolinium cation and not the expected 5,8-isomer. In the experiment, the researchers used many compounds, for example, 4-Iodoisoquinoline (cas: 55270-33-2Electric Literature of C9H6IN).

4-Iodoisoquinoline (cas: 55270-33-2) belongs to isoquinoline derivatives. Although isoquinoline derivatives can be synthesized by several methods, relatively few direct methods deliver the unsubstituted isoquinoline. Other industrial applications include their use as corrosion inhibitors, preservatives, and as solvents for resins and terpenes.Electric Literature of C9H6IN

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Catalysis by palladium salts. XIII. The reductive carbonylation of nitroaromatic compounds to isocyanates with Pd^II and Pd⁰ complexes as homogeneous catalysts was written by Ugo, R.;Psaro, R.;Pizzotti, M.;Nardi, P.;Dossi, C.;Andreetta, A.;Capparella, G.. And the article was included in Journal of Organometallic Chemistry in 1991.Computed Properties of C18H14Cl2N2Pd This article mentions the following:

A study was made of the reductive carbonylation of 2,4-dinitrotoluene (2,4-DNT) to 2,4-diisocyanatotoluene (2,4-TDI) with catalysis either by [Pd(isoquinoline)₂Cl₂], in the presence of Fe₂O₃ and MoO₃ or of Fe₂(MoO₄)₃ as cocatalysts, or by Pd⁰ complexes without cocatalysts. In the case of catalytic systems based upon [Pd(isoquinoline)₂Cl₂] the reaction was carried out at about 200 °C and under 200 atm of CO to produce 2,4-TDI with high conversions and acceptable selectivities. With Pd⁰ complexes as catalysts good conversions were achieved at much lower temperatures (100-120 °C) but with a low selectivity when a higher pressure of CO was used (300 atm or more). An investigation of the reductive carbonylation of PhNO₂ to PhNCO as a model system, together with a study of the thermal stability of [Pd(isoquinoline)₂Cl₂] in the presence of CO, provided evidence that the actual active catalyst was a reduced (probably zerovalent) form of palladium stabilized by the nitroarom. substrate or by some of the products from it as ligands. In the experiment, the researchers used many compounds, for example, Dichlorobis(isoquinoline)-Palladium (cas: 23807-51-4Computed Properties of C18H14Cl2N2Pd).

Dichlorobis(isoquinoline)-Palladium (cas: 23807-51-4) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. Most traditional methods of generating isoquinoline do so via oxidative aromatization of dihydro- or tetrahydro-isoquinolines, usually offering some environmental or economic advantage.Computed Properties of C18H14Cl2N2Pd

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Effects of neutral sulfate berberine on LPS-induced cardiomyocyte TNF-α secretion, abnormal calcium cycling, and cardiac dysfunction in rats was written by Yang, Jing;Wang, Hua-dong;Lu, Da-xiang;Wang, Yan-ping;Qi, Ren-bin;Li, Jing;Li, Fei;Li, Chu-jie. And the article was included in Acta Pharmacologica Sinica in 2006.Recommanded Product: 316-41-6 This article mentions the following:

Aim: To evaluate the effect of neutral sulfate berberine on cardiac function, tumor necrosis factor α (TNF-α) release, and intracellular calcium concentration ([Ca²⁺]_i) in cardiomyocytes exposed to lipopolysaccharide (LPS). Methods: Primary cultured rat cardiomyocytes were prepared from ventricles of 3 – 4-day old Sprague-Dawley rats. TNF-α concentrations in cell-conditioned media were measured by using a Quantikine ELISA kit, and cardiomyocyte [Ca²⁺]_i was measured by using Fura-2/AM. The isolated rat hearts were perfused in the Langendorff mode. Results: LPS at doses of 1, 5, 10, and 20 μg/mL markedly stimulated TNF-α secretion from cardiomyocytes, and neutral sulfate berberine inhibited LPS-induced TNF-α production Intracellular calcium concentration was significantly decreased after LPS stimulation for 1 h, and increased 2 h after LPS treatment. Pretreatment with neutral sulfate berberine reversed the LPS-induced [Ca²⁺]_i alterations, although neutral sulfate berberine did not inhibit a rapid increase in cardiomyocyte [Ca²⁺]_i induced by LPS. Perfusion of isolated hearts with LPS (100 μg/mL) for 20 min resulted in significantly impaired cardiac performance at 120 min after LPS challenge: the maximal rate of left ventricular pressure rise and fall (±dp/dt_max) decreased compared with the control. In contrast, ±dp/dt_max at 120 min in hearts perfused with neutral sulfate berberine (1 μmol/L) for 10 min followed by 20 min LPS (100 μg/mL) was greater than the corresponding value in the LPS group. Conclusion: Neutral sulfate berberine inhibits LPS-stimulated myocardial TNF-α production, impairs calcium cycling, and improves LPS-induced contractile dysfunction in intact heart. In the experiment, the researchers used many compounds, for example, 9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium sulfate(2:1) (cas: 316-41-6Recommanded Product: 316-41-6).

9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium sulfate(2:1) (cas: 316-41-6) belongs to isoquinoline derivatives. Isoquinoline is a structural isomer of quinoline, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine. It protonates to form salts upon treatment with strong acids, such as HCl. It forms adducts with Lewis acids, such as BF3.Recommanded Product: 316-41-6

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Adsorption kinetics of dye molecules on polymer membrane filters was written by Kost, S. H.;Breuer, H. D.. And the article was included in Berichte der Bunsen-Gesellschaft in 1992.Quality Control of 9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium sulfate(2:1) This article mentions the following:

The kinetics of the adsorption of dye mols. on membrane filters made of cellulose nitrate were studied. To obtain thermodn. (activation) data the temperature was varied from 283 to 333 K. Because 1st or 2nd order kinetic laws cannot describe the exptl. results, 2 different theories are applied. In addition to a classical concept a new equation based on fractal theory is tested and proved to be suitable for adsorption data is tested. The fractal parameters, fractal dimension D_s, and fraction dimension D_f, are in excellent agreement with other fractal kinetics experiments In the experiment, the researchers used many compounds, for example, 9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium sulfate(2:1) (cas: 316-41-6Quality Control of 9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium sulfate(2:1)).

9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium sulfate(2:1) (cas: 316-41-6) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. It protonates to form salts upon treatment with strong acids, such as HCl. It forms adducts with Lewis acids, such as BF3.Quality Control of 9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium sulfate(2:1)

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Protective effect of fasudil hydrochloride against myocardial ischemia/reperfusion injury in patients subject to mitral valve replacement was written by Li, Qian;Chen, Lihua;Liu, Su;Shang, Yanhui;Yin, Chen;Liu, Linli. And the article was included in Zhonghua Shiyan Waike Zazhi in 2015.Safety of 5-((1,4-Diazepan-1-yl)sulfonyl)isoquinoline hydrochloride This article mentions the following:

Objective To observe the protective effect of fasudil hydrochloride against myocardial ischemia/reperfusion injury in patients undergoing mitral valve replacement (MVR). Methods Forty patients who received MVR surgery were randomly divided into two groups: treatment group (T group, 20 cases, fasudil hydrochloride, 1 mg/kg) and control group (C group, 20 cases, normal saline). The concentrations of lactate dehydrogenase (LDH), Creatine kinase isoenzyme MB (CK-MB), and Cardiac troponin I (cTnI) in plasma were recorded and analyzed after induction of anesthesia (T1) and at 5 time points after cardiopulmonary bypass (CPB, T2-T5). Myocardial samples were selected to detect cell apoptosis rate. Results After CPB, LDH (U/L) in T group was significantly lower than in C group at T4 and T5 (486.05±39.52 vs. 528.13±47.65; 551.80±35.43 vs. 593.88±48.89; P<0.01). CK-MB (U/L) in T group was significantly lower than in C group at T3, T4, and T5 (78.39±8.27 vs.88.68±16.18, P<0.05; 62.46±6.10 vs. 72.37±11.85, P<0.01; 47.81±8.19 vs. 54.56±9.21, P<0.05). CTnI (μg/L) in T group was significantly lower than in C group at T3, T4, and T5 (4.40±1.12 vs. 5.80±1.51, 4.93±1.23 vs. 6.49±1.62, 3.99±1.20 vs. 5.80±1.30, P<0.01). The apoptosis rate of cardiomyocytes in T group was significantly lower than in C group [(7.48±2.18)% vs. (12.73±2.74)%, P<0.01]. Conclusion For patients undergoing MVR surgery with CPB, fasudil hydrochloride can decrease the levels of LDH, CK-MB and cTnI in plasma, inhibit apoptosis of cardiomyocytes and relieve myocardial ischemia/reperfusion injury, exerting the protective effects on myocardia. In the experiment, the researchers used many compounds, for example, 5-((1,4-Diazepan-1-yl)sulfonyl)isoquinoline hydrochloride (cas: 105628-07-7Safety of 5-((1,4-Diazepan-1-yl)sulfonyl)isoquinoline hydrochloride).

5-((1,4-Diazepan-1-yl)sulfonyl)isoquinoline hydrochloride (cas: 105628-07-7) belongs to isoquinoline derivatives. Quinoline is a catabolite of tryptophan, the basic structure of some antihypertensive drugs, such as the peripheral vasodilators prazosin and doxazosin. They are also used to make oil-soluble dyes, food colorants, pharmaceuticals, pH indicators and other organic compounds. Safety of 5-((1,4-Diazepan-1-yl)sulfonyl)isoquinoline hydrochloride

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Constructing mesoporous Zr-doped SiO₂ onto efficient Z-scheme TiO₂/g-C₃N₄ heterojunction for antibiotic degradation via adsorption-photocatalysis and mechanism insight was written by Yu, Yutang;Hu, Xingyu;Li, Meng;Fang, Jianzhang;Leng, Chengmeng;Zhu, Ximiao;Xu, Weicheng;Qin, Jingjun;Yao, Lang;Liu, Zhang;Fang, Zhanqiang. And the article was included in Environmental Research in 2022.Computed Properties of C20H18NO4 This article mentions the following:

Novel modified-TiO₂/Zr-doped SiO₂/g-C₃N₄ ternary composite is fabricated via an in-situ grow of porous Zr-SiO₂ layer to TiO₂/g-C₃N₄ heterojunction, which exhibits well adsorption-photocatalytic performance under simulated solar light irradiation The nano-size mesoporous TiO₂ are dispersed on the lamellar g-C₃N₄, and the Zr-SiO₂ is in-situ fabricated onto the surface of g-C₃N₄ sheets. The adsorption occurs on the SiO₂ layers, and doping Zr element to SiO₂ enhances the adsorption of pollutants, while the photocatalytic reaction occurs on the valence band (VB) of TiO₂ and conduction band (CB) of g-C₃N₄, which gives reactive oxygen species of ·O^–2, h⁺, and ·OH for high efficient decomposition of antibiotics, i.e. berberine hydrochloride (98.11%), tetracycline (80.76%), and oxytetracycline (84.84%). The excellent adsorption capacity and Z-scheme photoinduced charge carrier migration behavior endowed the novel material with enhanced berberine hydrochloride (BH) removal in water, which approx. 2.5 and 3.8 folds than that of pure g-C₃N₄ and sole TiO₂, resp. Three degradation pathways are unraveled by LC-MS and theor. calculations Furthermore, the toxicity of intermediates was evaluated by the Toxicity Estimation Software Tool (T.E.S.T.), the result demonstrated a good application potential of M-TiO₂/Zr-SiO₂/g-C₃N₄ as an novel adsorptive photocatalyst. In the experiment, the researchers used many compounds, for example, 9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium (cas: 2086-83-1Computed Properties of C20H18NO4).

9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium (cas: 2086-83-1) belongs to isoquinoline derivatives. Quinoline is a catabolite of tryptophan, the basic structure of some antihypertensive drugs, such as the peripheral vasodilators prazosin and doxazosin. The Pomeranz–Fritsch reaction provides a method for the preparation of isoquinoline. This reaction uses a benzaldehyde and aminoacetoaldehyde diethyl acetal, which in an acid medium react to form isoquinoline.Computed Properties of C20H18NO4

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Berberine-mediated REDD1 down-regulation ameliorates senescence of retinal pigment epithelium by interrupting the ROS-DDR positive feedback loop was written by Chen, Qingqiu;Xin, Guang;Li, Shiyi;Dong, Yuman;Yu, Xiuxian;Wan, Chengyu;Wei, Zeliang;Zhu, Yuda;Zhang, Kun;Wang, Yilan;Li, Fan;Zhang, Cuicui;Wen, E.;Li, Yulong;Niu, Hai;Huang, Wen. And the article was included in Phytomedicine in 2022.Category: isoquinoline This article mentions the following:

Accumulation of age-associated senescent cells accompanied with increased reactive oxygen species (ROS) and inflammatory factors contributes to the progression of age-related macular degeneration (AMD), the main cause of blindness in the elderly. Berberine (BBR) has shown efficacy in the treatment of age-related diseases including diabetes and obesity by decreasing ROS. However, the pharmacol. effect of BBR on alleviating retinal aging remains largely unknown. Our study aimed to investigate the pharmacol. effect of BBR as an anti-aging agent in retinal aging and its further mol. mechanisms. D-galactose (DG)-induced ARPE-19 cell senescence and retinal aging were employed to evaluate the anti-aging effect of BBR in vivo and in vitro. The siRNA transfection, Western-Blot analyses, SA-β-Gal assay and immunofluorescence were performed to investigate the potential mechanisms of BBR on anti-aging of RPE. In RPE-choroid of both natural aged and DG-induced accelerated aged mice, oxidative stress was increased along with the up-regulation of p21 expression, which was ameliorated by BBR treatment. BBR down-regulated the expression of REDD1 to decrease intracellular ROS content, attenuating DG-induced senescence in vitro and in vivo. Furthermore, p53 instead of HIF-1α was identified as the transcriptional regulator of REDD1 in DG-induced premature senescence. Importantly, NAC and BBR reversed the expression of p53 and the content of 8-OHdG, indicating that the pos. feedback loop of ROS-DNA damage response (DDR) was formed, and BBR interrupted this feedback loop to alleviate DG-induced premature senescence by reducing REDD1 expression. In addition, BBR restored DG-damaged autophagy flux by up-regulating TFEB-mediated lysosomal biosynthesis by inhibiting REDD1 expression, thereby attenuating cellular senescence. BBR down-regulates REDD1 expression to interrupt the ROS-DDR pos. feedback loop and restore autophagic flux, thereby reducing premature senescence of RPE. Our findings elucidate the promising effects of REDD1 on cellular senescence and the great potential of BBR as a therapeutic approach. In the experiment, the researchers used many compounds, for example, 9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium (cas: 2086-83-1Category: isoquinoline).

9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium (cas: 2086-83-1) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. The Pomeranz–Fritsch reaction provides a method for the preparation of isoquinoline. This reaction uses a benzaldehyde and aminoacetoaldehyde diethyl acetal, which in an acid medium react to form isoquinoline.Category: isoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lithioarene Cycliacylation and Pd-Catalyzed Aminoethylation/Cyclization to Access Electronically Diverse Saturated Isoquinoline Derivatives was written by Buchman, Marek;Farney, Elliot P.;Greszler, Stephen N.;Altenbach, Robert J.;Gfesser, Gregory A.;Voight, Eric A.. And the article was included in Journal of Organic Chemistry in 2022.Name: tert-Butyl 7-(trifluoromethyl)-3,4-dihydroisoquinoline-2(1H)-carboxylate This article mentions the following:

Authors report operationally facile methods for the synthesis of substituted dihydroisoquinolinones and tetrahydroisoquinolines from readily accessible o-bromobenzyl bromides and o-bromobenzaldehydes, resp. While classical electrophilic aromatic substitution reactions are tailored to the construction of saturated isoquinolines derived from electron-rich precursors, authors demonstrate efficient syntheses from electronically diverse substrates to produce cyclized products as single regioisomers. In the experiment, the researchers used many compounds, for example, tert-Butyl 7-(trifluoromethyl)-3,4-dihydroisoquinoline-2(1H)-carboxylate (cas: 1257855-77-8Name: tert-Butyl 7-(trifluoromethyl)-3,4-dihydroisoquinoline-2(1H)-carboxylate).

tert-Butyl 7-(trifluoromethyl)-3,4-dihydroisoquinoline-2(1H)-carboxylate (cas: 1257855-77-8) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. They are also used to make oil-soluble dyes, food colorants, pharmaceuticals, pH indicators and other organic compounds. Name: tert-Butyl 7-(trifluoromethyl)-3,4-dihydroisoquinoline-2(1H)-carboxylate

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

C-H Alkylation of Heteroarenes with Alkyl Oxalates by Molecular Photoelectrocatalysis was written by Xu, Fan;Lai, Xiao-Li;Xu, Hai-Chao. And the article was included in Synlett in 2021.Synthetic Route of C11H9NO2 This article mentions the following:

An oxidant- and metal-free photoelectrocatalytic C-H alkylation reaction of heteroarenes with alkyl oxalates was developed. Several classes of heteroaromatics, such as quinolines, isoquinolines, pyridines, and phenanthridines, would be alkylated with tertiary or secondary alkyl oxalates. The photoelectrochem. synthesis employed 2,4,5,6-tetra-9 H-carbazol-9-ylisophthalonitrile as a mol. catalyst and allowed the oxidative transformations and proceeded through evolution of hydrogen without a sacrificial chem. oxidant. In the experiment, the researchers used many compounds, for example, Methyl isoquinoline-3-carboxylate (cas: 27104-73-0Synthetic Route of C11H9NO2).

Methyl isoquinoline-3-carboxylate (cas: 27104-73-0) belongs to isoquinoline derivatives. Quinoline is a catabolite of tryptophan, the basic structure of some antihypertensive drugs, such as the peripheral vasodilators prazosin and doxazosin. They are also used to make oil-soluble dyes, food colorants, pharmaceuticals, pH indicators and other organic compounds. Synthetic Route of C11H9NO2

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Synthesis of isoquinoline-3-carboxylates and benzocyclobutanes via reaction of 2-amidoacrylate esters with arynes was written by Blackburn, Tom;Ramtohul, Yeeman K.. And the article was included in Synlett in 2008.Category: isoquinoline This article mentions the following:

A mild and general method for the synthesis of a variety of 2-substituted isoquinoline-3-carboxylates and benzocyclobutanes from the reaction of 2-amidoacrylate esters with arynes was developed. In the experiment, the researchers used many compounds, for example, Methyl isoquinoline-3-carboxylate (cas: 27104-73-0Category: isoquinoline).

Methyl isoquinoline-3-carboxylate (cas: 27104-73-0) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. It protonates to form salts upon treatment with strong acids, such as HCl. It forms adducts with Lewis acids, such as BF3.Category: isoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem