Category: isoquinoline

Polyphosphate esters as synthetic agents. II. Bischler-Napieralski reaction by means of polyphosphate esters and synthesis of 5H-2-benzazepine derivatives was written by Kanaoka, Yuichi;Sato, Eisuke;Yonemitsu, Osamu;Ban, Yoshio. And the article was included in Tetrahedron Letters in 1964.Reference of 52250-50-7 This article mentions the following:

Polyphosphate ester (I, prepared from P₂O₅ and Et₂O in CHCl₃ and used in situ, 5 parts) refluxed with 3,4-R₂C₆H₂CH₂CH₂NHCOR’ (R = MeO, R’ = Me; R = MeO, R’ = Ph; R = H,R’ = Me; R = H, R’ = Ph) 0.5-1.5 h. yielded 78-89% of the corresponding dihydroisoquinolines. Similarly, 3,4-(MeO)₂C₆H₃(CH₂)₃NHCOR (R = H, Me, Ph) were cyclized to yield the corresponding benzazepines (II, R = H, Me, Ph) (III, IV, V), in 76, 63, and 93% (crude) yields, resp., reduced by NaBH₄ to the resp. dihydro compounds (VII, VIII, IX). Phys. data are tabulated (compound, m.ps. of base, picrate, perchlorate, and methiodide given): III, 165-6掳, 197-8掳, 234掳 (decomposition), 182-5掳; IV, 140-3掳, 183-4掳, 190-1掳, 190-1掳; V, -, 222掳 (decomposition), 246-7掳 (decomposition), 206-6.5掳 (decomposition); VII, 172-3掳, 197-8, -, -; VIII, 115-20掳 (b. 3掳), 163-5, -, -; IX, 114-15, -, -, -. 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. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Reference of 52250-50-7

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Pharmacokinetics of solifenacin in pediatric populations with overactive bladder or neurogenic detrusor overactivity was written by Tannenbaum, Stacey;den Adel, Martin;Krauwinkel, Walter;Meijer, John;Hollestein-Havelaar, Adriana;Verheggen, Frank;Newgreen, Donald. And the article was included in Pharmacology Research & Perspectives in 2020.Recommanded Product: (S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate This article mentions the following:

The aim of this investigation was to characterize and compare the pharmacokinetics (PK) of the antimuscarinic drug solifenacin in pediatric patients with overactive bladder (OAB) or neurogenic detrusor overactivity (NDO) utilizing data from three phase III trials. LION was a placebo-controlled, 12-wk trial in children (5-<12 years) and adolescents (12-<18 years) with OAB. MONKEY and MARMOSET were open-label, 52-wk trials in children and adolescents or younger children (6 mo-<5 years), resp., with NDO. During the trials, solifenacin doses could be titrated to weight-adjusted pediatric equivalent doses (PEDs) of 2.5, 5, 7.5, or 10 mg day^-1. Nonlinear mixed effects modeling was used to develop population PK models to characterize the PK in patients with either OAB or NDO. Overall, 194 children and adolescents received solifenacin. At the time of PK sampling, the majority (119/164 [72.6%] patients) were receiving PED10 once daily. All population models included first-order oral absorption, a lag time, and interindividual variability. PK anal. showed that apparent clearance was similar in both patient populations. Mean apparent oral plasma clearance (CL/F), apparent volume of distribution during the terminal phase (V_z/F), and terminal half-life (t_1/2) were higher in adolescents than in children, but median time to maximum plasma concentration (t_max) was similar. Dose-normalized exposure results were similar for both younger and older patients with OAB or NDO. In conclusion, population PK modeling was used to successfully characterize solifenacin PK in pediatric patients with OAB or NDO. Similar solifenacin PK characteristics were observed in both populations. In the experiment, the researchers used many compounds, for example, (S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate (cas: 242478-37-1Recommanded Product: (S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate).

(S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate (cas: 242478-37-1) belongs to isoquinoline derivatives. Quinoline and its derivatives are widely used as fungicides, biological agents, antibiotics, alkaloids, dyes, rubber chemicals and flavoring agents. The discovery of chloroquine, the most well-known drug containing this stent, has helped bring about decades of malaria control and treatment.Recommanded Product: (S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Protective effects of the ROCK inhibitor fasudil against cognitive dysfunction following status epilepticus in male rats was written by Song, Xiaojie;He, Rong;Han, Wei;Li, Tianyi;Xie, Lingling;Cheng, Li;Chen, Hengsheng;Xie, Mingdan;Jiang, Li. And the article was included in Journal of Neuroscience Research in 2019.Computed Properties of C14H18ClN3O2S This article mentions the following:

Despite remarkable advances in epilepsy research, prevention and reversal of cognitive deficits following epilepsy remain a challenge. It was reported that the Rho kinase (ROCK) inhibitor fasudil hydrochloride (FH) could improve cognitive deficits in animal models of Alzheimer’s disease (AD). Thus, the aim of the present study was to determine whether FH-mediated inhibition of the effects of ROCK signaling could improve cognitive deficits in male rats (postnatal 21-day old) following status epilepticus (SE) induced by lithium-pilocarpin, the therapeutic window of opportunity and to elucidate the underlying mechanisms. Western blotting anal. showed upregulation of phosphorylated RhoA (p-RhoA) expression, and indicated activation of Rho/ROCK signaling after SE. The Morris water maze (MWM) test was used to analyze learning-memory ability. HE staining, immunofluorescence staining with antineuronal nuclei (NeuN) and anti-neurofilament proteins 200 kD (NF200), transmission electron microscopy, and quant. anal. of NeuN and synaptophysin by western blotting were performed to observe alterations in neurons, axons, and synapses in the hippocampi. EEG (EEG) monitoring was used to record electrophysiol. activities after SE. Our results indicated that treatment with FH at the first day following SE or 5 days later both could ameliorate cognitive dysfunction by reducing neuron, axon, and synapse damage, and mitigating EEG discharges, suggesting various roles for the Rho/ROCK signaling pathway in the pathol. processes of brain damages following SE induced by lithium-pilocarpine. The Rho/ROCK signaling pathway is, therefore, a potential therapeutic target for the prevention or reversal of epilepsy induced brain damages. In the experiment, the researchers used many compounds, for example, 5-((1,4-Diazepan-1-yl)sulfonyl)isoquinoline hydrochloride (cas: 105628-07-7Computed Properties of C14H18ClN3O2S).

5-((1,4-Diazepan-1-yl)sulfonyl)isoquinoline hydrochloride (cas: 105628-07-7) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. It protonates to form salts upon treatment with strong acids, such as HCl. It forms adducts with Lewis acids, such as BF3.Computed Properties of C14H18ClN3O2S

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Iridium-catalyzed asymmetric hydrogenation of cyclic iminium salts was written by Ji, Yue;Feng, Guang-Shou;Chen, Mu-Wang;Shi, Lei;Du, Haifeng;Zhou, Yong-Gui. And the article was included in Organic Chemistry Frontiers in 2017.Application of 52250-50-7 This article mentions the following:

An enantioselective hydrogenation of cyclic iminium salts has been successfully realized by employing [Ir(COD)Cl]₂ and chiral diphosphine ligands as catalyst, furnishing chiral N-alkyl tetrahydroisoquinolines and N-alkyl tetrahydro-尾-carbolines with up to 96% ee and 88% ee, resp. The hydrogenation provides a direct, simple and efficient protocol toward chiral tertiary amines. Meanwhile, asym. hydrogenation at the gram scale was also conducted smoothly without loss of reactivity and enantioselectivity. In the experiment, the researchers used many compounds, for example, 1-Phenyl-3,4-dihydroisoquinoline (cas: 52250-50-7Application of 52250-50-7).

1-Phenyl-3,4-dihydroisoquinoline (cas: 52250-50-7) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. Isoquinoline-type alkaloids show biological activities similar to those of morphinane-, protoberberine-, and benzophenanthridine-type alkaloids.Application of 52250-50-7

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Redox potential tuning in bio-relevant heterocycles via (anti)aromaticity modulated H-bonding (AMHB) was written by Kakeshpour, Tayeb;Van Wiemeersch, Adam;Jackson, James E.. And the article was included in Canadian Journal of Chemistry in 2020.Application In Synthesis of 1-Hydroxyisoquinoline This article mentions the following:

Hydrogen bonds are arguably the most important non-covalent interactions in chem. and biol., and their strength and directionality have been elegantly exploited in the rational design of complex structures. We recently noted that the variable responses of cyclic 蟺-systems upon H-bond formation reciprocally lead to modulations of the H-bonds鈥?strengths, a phenomenon that we dubbed (anti)aromaticity-modulated hydrogen bonding (AMHB) [J. Am. Chem. Soc.2016, 138, 3427-3432]. Species that switch from aromatic to antiarom. or vice versa upon changing 蟺-electron counts should be oppositely stabilized by the AMHB effects, so their redox potentials should be significantly “tuned” by H-bond formation. Herein, using quantum chem. simulations, we explore the effects of these H-bond induced 蟺-electron polarizations on the redox potentials of (anti)aromatic heterocycles. The systems chosen for this study have embedded amide groups and amidine moieties capable of forming two-point H-bonds in their cyclic 蟺-systems. Thus, as the 4-electron and 6-electron 蟺-systems in redox-capable monocycles (e.g., quinones) can be differentially stabilized, their redox potentials can be modulated by H-bond formation by as much as 6 kcal/mol (258 mV for one electron transfer). In fused rings, the connectivity patterns are as important as the 蟺-electron counts. Extending these ideas to flavin, a biol. relevant case, we find that H-bonding patterns like those found in its crystals can vary its redox potential by up to 1.3 kcal/mol. In the experiment, the researchers used many compounds, for example, 1-Hydroxyisoquinoline (cas: 491-30-5Application In Synthesis of 1-Hydroxyisoquinoline).

1-Hydroxyisoquinoline (cas: 491-30-5) 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 In Synthesis of 1-Hydroxyisoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mirabegron causes vesical and urethral relaxation in rats with spinal cord injury was written by Sugaya, Kimio;Nishijima, Saori;Kadekawa, Katsumi;Noguchi, Katsuhiko;Ueda, Tomoyuki;Yamamoto, Hideyuki. And the article was included in LUTS: Lower Urinary Tract Symptoms in 2020.Category: isoquinoline This article mentions the following:

Effects of solifenacin and mirabegron on vesical and urethral function were compared in rats with or without spinal cord injury. Isovolumetric cystometry and urethral pressure recording were initially performed in intact rats. Then, bladder neck was ligated under urethane anesthesia, after which catheter was inserted through bladder dome for isovolumetric cystometry and another catheter was inserted into urethra to measure urethral pressure. Solifenacin or mirabegron was injected i.v., and bladder and urethral activity were recorded. To create rats with SCI, the spinal cord was transected at lower thoracic level under isoflurane anesthesia. After 2 wk, catheter was inserted through bladder dome for single cystometry and bladder activity was recorded without anesthesia following i.v. injection of solifenacin or mirabegron. In SCI rats, single cystometry showed that solifenacin and mirabegron both increased bladder volume at first non-voiding bladder contraction and decreased the maximum bladder contraction pressure. Mirabegron also increased voided volume and decreased the percentage residual volume without altering bladder capacity. Solifenacin and mirabegron both inhibited bladder contractility, and mirabegron possibly also induced urethral relaxation. Mirabegron may be suitable for patients with overactive bladder and residual urine. In the experiment, the researchers used many compounds, for example, (S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate (cas: 242478-37-1Category: isoquinoline).

(S)-(R)-Quinuclidin-3-yl 1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate (cas: 242478-37-1) belongs to isoquinoline derivatives. Although isoquinoline derivatives can be synthesized by several methods, relatively few direct methods deliver the unsubstituted isoquinoline. The discovery of chloroquine, the most well-known drug containing this stent, has helped bring about decades of malaria control and treatment.Category: isoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Improved performance of perylenediimide-based lasers was written by Ramirez, Manuel G.;Morales-Vidal, Marta;Navarro-Fuster, Victor;Boj, Pedro G.;Quintana, Jose A.;Villalvilla, Jose M.;Retolaza, Aritz;Merino, Santos;Diaz-Garcia, Maria A.. And the article was included in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices in 2013.Name: 2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone This article mentions the following:

The aim of this work was to improve the laser performance, in terms of threshold and operational lifetime, of lasers based on polymer films doped with perylenediimide (PDI) derivatives as active media. For such purpose, the authors 1st studied the amplified spontaneous emission (ASE) properties of perylene orange (PDI-O), when doped into polystyrene (PS) films. Lower ASE thresholds and larger photostabilities than those of similar films containing another PDI derivative (PDI-C6), recently reported in the literature, were measured. Results were interpreted in terms of the photoluminescence efficiency of the films, which depends on the type of mol. arrangement, inferred with the help of NMR experiments Also PS films have a better ASE performance, i.e. lower thresholds and larger photostabilities, than those based on PMMA, which was recently highlighted as 1 of the best matrixes for PDI-O. Finally, a 1-dimensional 2nd-order distributed feedback laser using PS doped with PDI-O was fabricated and characterized. This device showed a threshold significantly lower (by around 1 order of magnitude) than that of a similar laser based on PDI-C6-doped PS. In the experiment, the researchers used many compounds, for example, 2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone (cas: 110590-84-6Name: 2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone).

2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone (cas: 110590-84-6) 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.Name: 2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

A Metal-Organic Framework as a Multiphoton Excitation Regulator for the Activation of Inert C(sp³)-H Bonds and Oxygen was written by Ji, Guanfeng;Zhao, Liang;Wei, Jianwei;Cai, Junkai;He, Cheng;Du, Zenggang;Cai, Wei;Duan, Chunying. And the article was included in Angewandte Chemie, International Edition in 2022.Safety of Methyl isoquinoline-3-carboxylate This article mentions the following:

The activation and oxidization of inert C(sp³)-H bonds into value-added chems. affords attractively economic and ecol. benefits as well as central challenge in modern chem. Inspired by the natural enzymic transformation, herein, we report a new multiphoton excitation approach to activate the inert C(sp³)-H bonds and oxygen by integrating the photoinduced electron transfer (PET), ligand-to-metal charge transfer (LMCT) and hydrogen atom transfer (HAT) events together into one metal-organic framework. The well-modified NAD (NAD⁺) mimics oxidized Ce^III-OEt moieties to generate Ce^IV-OEt chromophore and its reduced state mimics NAD^. via PET. The in situ formed Ce^IV-OEt moiety triggers a LMCT excitation to form the alkoxy radical EtO^., abstracts a hydrogen atom from the C(sp³)-H bond, accompanying the recovery of Ce^III-OEt and the formation of alkyl radicals. The formed NAD^. activates oxygen to regenerate the NAD⁺ for next recycle, wherein, the activated oxygen species interacts with the intermediates for the oxidization functionalization, paving a catalytic avenue for developing scalable and sustainable synthetic strategy. In the experiment, the researchers used many compounds, for example, Methyl isoquinoline-3-carboxylate (cas: 27104-73-0Safety of Methyl isoquinoline-3-carboxylate).

Methyl isoquinoline-3-carboxylate (cas: 27104-73-0) 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.Safety of Methyl isoquinoline-3-carboxylate

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Reactivity of N-(4-Nitrophenyl)propionohydrazonoyl Bromide. Synthesis and Antimicrobial Study of Thiadiazoles and 4,6-Dithia-1,2,9-triazaspiro-[4.4]-non-2-en-8-ones was written by Mohamed Teleb, Mohamed A.;Kamel, Monica G.;Ead, Hamed A.;Hassaneen, Hamdi M.;Saleh, Fatma M.. And the article was included in Polycyclic Aromatic Compounds.Quality Control of 6,7-Dimethoxy-3,4-dihydroisoquinoline This article mentions the following:

Treatment of thioanilides with N-(4-nitrophenyl)propionohydrazonoyl bromide in refluxing chloroform in the presence of triethylamine gave thiadiazoles. Stirring of 2-((methylthio)carbonthioyl)hydrazonoes with hydrazonoyl bromide in ethanol in the presence of triethylamine at room temperature afforded the corresponding thiadiazole derivatives Also, reaction of 5-arylidene-3-phenyl-2-thioxothiazolidin-4-ones and hydrazonoyl bromide in chloroform in the presence of triethylamine at reflux to yield the corresponding 4,6-dithia-1,2,9-triazaspiro[4.4]non-2-en-8-one derivatives The structures of the latter new products were identified by elemental anal. and spectral data. Antimicrobial studies were performed against all synthesized compounds Compounds , , and were exhibited high antimicrobial activities against the tested microorganisms. The other compounds showed no activities. In the experiment, the researchers used many compounds, for example, 6,7-Dimethoxy-3,4-dihydroisoquinoline (cas: 3382-18-1Quality Control of 6,7-Dimethoxy-3,4-dihydroisoquinoline).

6,7-Dimethoxy-3,4-dihydroisoquinoline (cas: 3382-18-1) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Quality Control of 6,7-Dimethoxy-3,4-dihydroisoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Solid supported platinum(0) nanoparticles catalyzed chemo-selective reduction of nitroarenes to N-arylhydroxylamines was written by Shil, Arun K.;Das, Pralay. And the article was included in Green Chemistry in 2013.Application In Synthesis of 5-Nitroisoquinoline This article mentions the following:

Solid supported platinum(0) (SS-Pt) nanoparticles were developed as a heterogeneous catalyst following a reduction/deposition method and characterized by SEM, TEM, EDX and x-ray diffraction anal. The SS-Pt catalyst was applied in the chemo-selective reduction of nitroarenes to N-arylhydroxylamines using hydrazine hydrate as a hydrogen source. A wide variety of reducible functional groups such as halides, carboxylic acids, esters, amides, nitriles, keto, alkenes, alkynes and N-benzyl were well tolerated under the reaction conditions. This process was further successfully employed in 10 g scale reactions. N-Arylhydroxylamines were further applied for catalyst free synthesis of azoxybenzenes. Moreover, use of PEG-400 as cheap reaction medium, additive free methodol. and the recyclability of SS-Pt catalyst up to ten times without significant loss of catalytic activity evidently follow the principles of green chem. In the experiment, the researchers used many compounds, for example, 5-Nitroisoquinoline (cas: 607-32-9Application In Synthesis of 5-Nitroisoquinoline).

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. Most traditional methods of generating isoquinoline do so via oxidative aromatization of dihydro- or tetrahydro-isoquinolines, usually offering some environmental or economic advantage.Application In Synthesis of 5-Nitroisoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem