Category: isoquinoline

Berberine Ameliorate Haloperidol and 3-Nitropropionic Acid-Induced Neurotoxicity in Rats was written by Kadir, Abdul;Singh, Jasdeep;Rahi, Vikrant;Kumar, Puneet. And the article was included in Neurochemical Research in 2022.Recommanded Product: 9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium This article mentions the following:

Berberine due to its antioxidant properties, has been used around the globe significantly to treat several brain disorders. Also, oxidative stress is a pathol. hallmark in neurodegenerative diseases like Huntington’s disease (HD) and Tardive dyskinesia (TD). Berberine an alkaloid from plants has been reported to have neuroprotective potential in several animal models of neurodegenerative diseases. Hence, this study aims to evaluate the neuroprotective effect of berberine in the animal model of 3-nitropropionic acid (3-NP) induced HD and haloperidol induced tardive dyskinesia with special emphasis on its antioxidant property. The study protocol was divided into 2 phases, first phase involved the administration of 3-NP and berberine at the dose of (25, 50, and 100 mg/kg) i.p. (i.p) and orally (p.o.) resp. for 21 days, and the following parameters (rotarod, narrow beam walk and photoactometer) as a measure of motor activity and striatal and cortical levels of (LPO, GSH, SOD, catalase, and nitrate) evaluated as a measure of oxidative stress were assessed for HD. Similarly in the second phase, TD was induced by using haloperidol, for 21 days and berberine at the dose of (25, 50, and 100 mg/kg) was administered, and both phys. and biochem. parameters were assessed as mentioned for the HD study. The resultant data indicated that berberine attenuate 3-NP and haloperidol-induced behavioral changes and improved the antioxidant capcity in rodents. Hence berberine might be a novel therapeutic candidate to manage TD & HD. 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: 2086-83-1Recommanded Product: 9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium).

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. Although isoquinoline derivatives can be synthesized by several methods, relatively few direct methods deliver the unsubstituted isoquinoline. It protonates to form salts upon treatment with strong acids, such as HCl. It forms adducts with Lewis acids, such as BF3.Recommanded Product: 9,10-Dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Development of a quinolinium/cobaloxime dual photocatalytic system for oxidative C-C cross-couplings via H₂ release was written by Li, Jianbin;Huang, Chia-Yu;Han, Jing-Tan;Li, Chao-Jun. And the article was included in ACS Catalysis in 2021.Application of 27104-73-0 This article mentions the following:

Designing mol. photocatalysts for potent photochem. reactivities ranks among the most challenging but rewarding endeavors in synthetic photochem. Herein, we document a quinoline-based organo-photoredox catalyst, 2,4-bis(4-methoxyphenyl)quinoline (DPQN^2,4-di-OMe), that could be assembled via the facile aldehyde-alkyne-amine (A³) couplings. Unlike the reported photocatalysts, which impart their photoreactivities as covalently linked entities, our mechanistic studies suggested a distinct proton activation mode of DPQN^2,4-di-OMe. Simply upon protonation, DPQN^2,4-di-OMe could reach a highly oxidizing excited state under visible-light irradiation (E*_1/2 = +1.96 V vs a standard calomel electrode, SCE). On this basis, the synergistic merger of DPQN^2,4-di-OMe and cobaloxime formulated an oxidative cross-coupling platform, enabling the Minisci alkylation and various C-C bond-forming reactions with a diverse pool of radical precursors in the absence of chem. oxidants. The catalytic loading of DPQN^2,4-di-OMe could be minimized to 0.025 mol % (TON = 3360), and a polymer-supported photocatalyst, DPQN^2,4-di-OR@PS, was prepared to facilitate catalyst recycling (at a 0.50 mmol % loading and up to five times without significant loss of photosynthetic efficiency). In the experiment, the researchers used many compounds, for example, Methyl isoquinoline-3-carboxylate (cas: 27104-73-0Application of 27104-73-0).

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. Application of 27104-73-0

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Pathogenic SLC25A26 variants impair SAH transport activity causing mitochondrial disease was written by Schober, Florian A.;Tang, Jia Xin;Sergeant, Kate;Moedas, Marco F.;Zierz, Charlotte M.;Moore, David;Smith, Conrad;Lewis, David;Guha, Nishan;Hopton, Sila;Falkous, Gavin;Lam, Amanda;Pyle, Angela;Poulton, Joanna;Gorman, Grainne S.;Taylor, Robert W.;Freyer, Christoph;Wredenberg, Anna. And the article was included in Human Molecular Genetics in 2022.Application of 242478-37-1 This article mentions the following:

The SLC25A26 gene encodes a mitochondrial inner membrane carrier that transports S-adenosylmethionine (SAM) into the mitochondrial matrix in exchange for S-adenosylhomocysteine (SAH). SAM is the predominant methyl-group donor for most cellular methylation processes, of which SAH is produced as a byproduct. Pathogenic, biallelic SLC25A26 variants are a recognized cause of mitochondrial disease in children, with a severe neonatal onset caused by decreased SAM transport activity. Here, we describe two, unrelated adult cases, one of whom presented with recurrent episodes of severe abdominal pain and metabolic decompensation with lactic acidosis. Both patients had exercise intolerance and mitochondrial myopathy associated with biallelic variants in SLC25A26, which led to marked respiratory chain deficiencies and mitochondrial histopathol. abnormalities in skeletal muscle that are comparable to those previously described in early-onset cases. We demonstrate using both mouse and fruit fly models that impairment of SAH, rather than SAM, transport across the mitochondrial membrane is likely the cause of this milder, late-onset phenotype. Our findings associate a novel pathomechanism with a known disease-causing protein and highlight the quests of precision medicine in optimizing diagnosis, therapeutic intervention and prognosis. In the experiment, the researchers used many compounds, for example, (S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate (cas: 242478-37-1Application of 242478-37-1).

(S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate (cas: 242478-37-1) 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. They are also used to make oil-soluble dyes, food colorants, pharmaceuticals, pH indicators and other organic compounds. Application of 242478-37-1

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mechanism of fasudil hydrochloride postconditioning in protecting rats against myocardial ischemia/reperfusion injury was written by Jiang, Zhi-hui;Feng, Guang-zhi;Qian, Zhi-yong;Xu, Shu-dong. And the article was included in Zhonghua Laonian Xin Nao Xueguanbing Zazhi in 2013.COA of Formula: C14H18ClN3O2S This article mentions the following:

The mechanism of fasudil hydrochloride postconditioning in protecting rats against myocardial ischemia/reperfusion (I/R) injury was studied. Thirty SD rats were randomly divided into sham operation group, I/R group, ischemic postconditioning group, fasudil hydrochloride group and fasudil hydrochloride + YZ94002 group (6 in each group). The rats were sacrificed 180 min after reperfusion. Expressions of Bcl-2, Bax, caspase 3, Akt and P-Akt in myocardial tissue were detected by Western blot. The Bcl-2 expression level was significantly higher whereas the Bax and caspase 3 expression levels were significantly lower in ischemic postconditioning group and fasudil hydrochloride group than in I/R group (P<0.05). The Bcl-2 expression level was significantly lower whereas the Bax and caspase 3 expression levels were significantly higher in fasudil hydrochloride + LY294002 group than in fasudil hydrochloride group (P<0.05). The Akt expression level was significantly higher in fasudil hydrochloride group than in I/R group and fasudil hydrochloride+LYZ94002 group (P<0.05). Fasudil hydrochloride postconditioning can protect rats against myocardial I/R injury possibly by activating the PI3K-Akt pathway. In the experiment, the researchers used many compounds, for example, 5-((1,4-Diazepan-1-yl)sulfonyl)isoquinoline hydrochloride (cas: 105628-07-7COA of Formula: C14H18ClN3O2S).

5-((1,4-Diazepan-1-yl)sulfonyl)isoquinoline hydrochloride (cas: 105628-07-7) 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. They are also used to make oil-soluble dyes, food colorants, pharmaceuticals, pH indicators and other organic compounds. COA of Formula: C14H18ClN3O2S

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Nitrilium salts in the synthesis of heterocyclic compounds was written by Munoz, G. Garcia;Lora-Tamayo, M.;Madronero, R.;Marzal, J. Martinez. And the article was included in Anales Real Soc. Espan., Fis. y Quim. (Madrid) in 1961.Application In Synthesis of 1-Phenyl-3,4-dihydroisoquinoline This article mentions the following:

The general reaction between a complex of a nitrile with SnCl₄ and β-halogenated aryl group was described. PhCH₂CH₂Cl and several RCN reacted to yield I (R and % yield given): H, 14; Me, 91 (b_0.3 57°); Et, 100 (b_0.5 76-7°); Cl₃C, O; Ph, 65 (b_0.7 139-40°); o-MeC₆H₄, 59; o-O₂NC₆H₄, 50 (m. 83-4°); m-O₂NC₆H₄, 48; p-O₂NC₆H₄, 23 (m. 119-21°); p-MeOC₆H₄, 8; 3,4(MeO)₂C₆H₃, 16; αC₁₀H₇, 26; β-C₁₀H₇, 60; PhCH₂, 55 (b_0.5 142°); p-MeOC₆H₄CH₂, 6. The use of 1-chloro(3,4-dimethoxyphenyl)-ethane as a halogenated compound gave the corresponding dimethoxy derivatives of I (R and % yield given): Me, 58 (m. 105-6°); Ph, 82 (m. 122-3°); PhCH₂, 80; 3,4-(MeO)₂C₆H₃CH₂, 21. 1-(R-substituted)-6,7-methylenedioxy-3-methyl-3,4-dihydroisoquinolines (II) were prepared by use of RCN and 1-(3,4-methylenedioxyphenyl)-2-bromopropane (III) (R and % yield given): Me, 75; Et, 64; MeOCH₂, 64; Ph, 53, m. 94-4.5°; p-MeOC₆H₄, 30, m. 98°; 3,4-(MeO)₂C₆H₃, 52; 3,4-(CH₂O₂)C₆H₃, 45, m. 121-2°; PhCH₂, 79; 3,4-(MeO)₂C₆H₃CH₂, 23. Use of 3,4-(MeO)₂C₆H₃CH₂CHMeBr instead of III gave the 6,7-dimethoxy-3-Me derivatives of I (R and % yield given): Me, 90; Et, 92; MeOCH₂, 60; Ph, 69, m. 101-3°; p-MeOC₆H₄, 32, m. 103-4°; 3,4-(MeO)₂C₆H₃, 17; 3,4-(CH₂O₂)C₆H₃, 12; o-O₂NC₆H₄ 7; m-O₂NC₆H₄, 50; PhCH₂, 64; 3,4-(MeO)₂C₆H₃CH₂, 30. The picrates of all the compounds were prepared and m.ps. given. Reaction of RCN with o-ClCH₂C₆H₄NH₂ gave corresponding 2-R derivatives of 3,4-dihydroquinazoline (IV) (R and % yield given): Me, 68, b_0.5 125-8°; Et, 92; Pr, 91, b_0.3 122-3°; MeOCH₂, 68; Ph, 86, m. 142-3°; p-MeOC₆H₄, 75, m. 178-9°; o-O₂NC₆H₄, 71, m. 94-5°; m-O₂NC₆H₄, 96, m. 224-5°; o-ClC₆H₄, 40, m. 108-9°; α-C₁₀H₇, 90, m. 152-3°; PhCH₂, 100, m. 130-1°; p-ClC₆H₄CH₂, 93, m. 125-6°. Similarly o-MeNHC₆H₄CH₂Cl was used to prepare the 1-Me derivatives of IV (R and % yield given): Me, 85, b_0.2 80-1°; Ph, 83, m. 113-14°; o-O₂NC₆H₄, 75, m. 131-2°; p-MeOC₆H₄, 80. Some derivatives of IV were dehydrogenated to give the corresponding quinazolines (R and m.p. given): Me, -; Ph, 104-5°; p-MeOC₆H₄, 95-6°; o-O₂NC₆H₄, 108-9°; p-ClC₆H₄, -; α-C₁₀H₇, m. 127-8°. In the experiment, the researchers used many compounds, for example, 1-Phenyl-3,4-dihydroisoquinoline (cas: 52250-50-7Application In Synthesis of 1-Phenyl-3,4-dihydroisoquinoline).

1-Phenyl-3,4-dihydroisoquinoline (cas: 52250-50-7) belongs to isoquinoline derivatives. Quinoline and its derivatives are widely used as fungicides, biological agents, antibiotics, alkaloids, dyes, rubber chemicals and flavoring agents. It protonates to form salts upon treatment with strong acids, such as HCl. It forms adducts with Lewis acids, such as BF3.Application In Synthesis of 1-Phenyl-3,4-dihydroisoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Determination of residual solvents in fasudil hydrochloride by headspace gas chromatography was written by Ding, Quan. And the article was included in Fujian Fenxi Ceshi in 2011.Quality Control of 5-((1,4-Diazepan-1-yl)sulfonyl)isoquinoline hydrochloride This article mentions the following:

A method for determination of ethanol, Et acetate in fasudil hydrochloride by headspace gas chromatog. on DB-624 column with FID detector was developed. Three residual solvents were completely separated The degree of separation was 19.0 for methanol and aether, 20.8 for aether and dichloromethane. Good linearity was achieved (r = 0.9993 for methanol, r = 0.9997 for aether, and r = 0.9963 for dichloromethane). The average recovery was 95.81% for ethanol, 93.11% for aether, and 92.85 for dichloromethane. The RSD of repetition was 1.8 for methanol, 3.4% for aether and 5.4% for dichloromethane. The detection limits was 0.08 μg/mL for methanol, 0.0007 μg/mL for aether, and 0.07 μg/mL for dichloromethane. In the experiment, the researchers used many compounds, for example, 5-((1,4-Diazepan-1-yl)sulfonyl)isoquinoline hydrochloride (cas: 105628-07-7Quality Control 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. The isoquinoline structure occurs in a considerable number of alkaloids in widely separated plant families. 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.Quality Control of 5-((1,4-Diazepan-1-yl)sulfonyl)isoquinoline hydrochloride

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Thermodynamical properties of protein kinase with adenine inhibitors was written by Wu, Ling Zhi;Hu, Dong;Tang, Li Hua;Hu, Xiao Fei;Qin, Meng. And the article was included in Chinese Science Bulletin in 2013.Related Products of 607-32-9 This article mentions the following:

The protein-based mol. recognition of the adenine ring is essential to understand protein function and drug design as well. In this paper, a variety of the adenine-based inhibitors with modified groups of amino groups, nitrogen and oxygen atoms in the aromatic ring are designed, and the binding capability of these adenosine analogs with an aminoglycoside antibiotic kinase [APH(3′)-IIIa] are investigated with activity assays and isothermal titration calorimetry (ITC) experiments 1-aminoisoquinoline is one of the weakest substrates bound to APH(3′)-IIIa with the lowest affinity (high k _i and high k _d ) and the smallest neg. value of free energy change (ΔG) among the inhibitors tested. The binding process of adenine and 5-nitroisoquinoline to APH(3′)-IIIa is an enthalpy-driven event with unfavorable entropy, which is consistent with the energy change induced by the binding of ATP to the enzyme. However, the reverse is true for 1-aminoisoquinoline, 3-amino-5-nitrobenzisothiazole, 5-aminoisoquinoline binding to the enzyme because the entropy is more favorable and the enthalpy makes a lower contribution to the binding process. These results suggest that small changes of the adenine ring can lead to significant influence on the ability of these analogs to occupy the adenine-binding region of the enzyme, which can be the potential inhibitors as drug candidates against the bacterial resistance. In the experiment, the researchers used many compounds, for example, 5-Nitroisoquinoline (cas: 607-32-9Related Products of 607-32-9).

5-Nitroisoquinoline (cas: 607-32-9) belongs to isoquinoline derivatives. Although isoquinoline derivatives can be synthesized by several methods, relatively few direct methods deliver the unsubstituted isoquinoline. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Related Products of 607-32-9

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Identification of an imine reductase for asymmetric reduction of bulky dihydroisoquinolines was written by Li, Hao;Tian, Ping;Xu, Jian-He;Zheng, Gao-Wei. And the article was included in Organic Letters in 2017.Reference of 52250-50-7 This article mentions the following:

A new imine reductase from Stackebrandtia nassauensis (SnIR) was identified, which displayed over 25- to 1400-fold greater catalytic efficiency for 1-methyl-3,4-dihydroisoquinoline (1-Me DHIQ) compared to other imine reductases reported. Subsequently, an efficient SnIR-catalyzed process was developed by simply optimizing the amount of cosolvent, and up to 15 g/L 1-Me DHIQ was converted completely without a feeding strategy. Furthermore, the reaction proceeded well for a panel of dihydroisoquinolines, affording the corresponding tetrahydroisoquinolines (mostly in S-configuration) in good yields (up to 81%) and with moderate to excellent enantioselectivities (up to 99% ee). In the experiment, the researchers used many compounds, for example, 1-Phenyl-3,4-dihydroisoquinoline (cas: 52250-50-7Reference of 52250-50-7).

1-Phenyl-3,4-dihydroisoquinoline (cas: 52250-50-7) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. Most traditional methods of generating isoquinoline do so via oxidative aromatization of dihydro- or tetrahydro-isoquinolines, usually offering some environmental or economic advantage.Reference of 52250-50-7

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Substrate scope in the direct imine acylation of ortho-substituted benzoic acid derivatives: the total synthesis (±)-cavidine was written by Kitsiou, Christiana;Unsworth, William P.;Coulthard, Graeme;Taylor, Richard J. K.. And the article was included in Tetrahedron in 2014.HPLC of Formula: 52250-50-7 This article mentions the following:

The direct imine acylation (DIA) and subsequent cyclization of a range of imines with ortho-substituted benzoic acid derivatives is described. Variation in the coupling reagents, imine and benzoic acid were all examined The DIA procedure was also applied in the total synthesis of (±)-cavidine (I). In the experiment, the researchers used many compounds, for example, 1-Phenyl-3,4-dihydroisoquinoline (cas: 52250-50-7HPLC of Formula: 52250-50-7).

1-Phenyl-3,4-dihydroisoquinoline (cas: 52250-50-7) belongs to isoquinoline derivatives. Quinoline and its derivatives are widely used as fungicides, biological agents, antibiotics, alkaloids, dyes, rubber chemicals and flavoring agents. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.HPLC of Formula: 52250-50-7

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Sequential One-Pot Vilsmeier-Haack and Organocatalyzed Mannich Cyclizations to Functionalized Benzoindolizidines and Benzoquinolizidines was written by Outin, Johanne;Quellier, Pauline;Belanger, Guillaume. And the article was included in Journal of Organic Chemistry in 2020.Recommanded Product: 6,7-Dimethoxy-3,4-dihydroisoquinoline This article mentions the following:

The development of new one-pot sequential cyclizations involving a Vilsmeier-Haack reaction followed by an organocatalyzed Mannich reaction is reported. This synthetic strategy gives access to functionalized indolizidines and quinolizidines in one operation from readily synthesized precursors. Yields and diastereoselectivities are good to excellent when formamides are used to trigger the key step, bearing either an electron-rich aryl or a pyrrole as the nucleophilic partner in the first cyclization. In the experiment, the researchers used many compounds, for example, 6,7-Dimethoxy-3,4-dihydroisoquinoline (cas: 3382-18-1Recommanded Product: 6,7-Dimethoxy-3,4-dihydroisoquinoline).

6,7-Dimethoxy-3,4-dihydroisoquinoline (cas: 3382-18-1) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. Other industrial applications include their use as corrosion inhibitors, preservatives, and as solvents for resins and terpenes.Recommanded Product: 6,7-Dimethoxy-3,4-dihydroisoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem