Category: isoquinoline

Synthesis, chemistry and photochemical substitutions of 6,11-dihydro-5H-pyrrolo[2,1-b][3]benzazepin-11-ones was written by Girard, Yves;Atkinson, Joseph G.;Belanger, Patrice C.;Fuentes, Jose J.;Rokach, Joshua;Rooney, C. Stanley;Remy, David C.;Hunt, Cecilia A.. And the article was included in Journal of Organic Chemistry in 1983.Synthetic Route of C9H8N2O3 This article mentions the following:

Title pyrrolobenzazepinones, I (R = H, cyano, Br, NO₂, CHO, CO₂H, SOMe, SCF₃, etc.; R¹ = H, SO₂F, Me, NH₂, NHAc, Cl, cyano, CO₂H, SCF₃) were prepared as intermediates for potential central nervous system drugs. Substituents in the pyrrole ring of I were introduced by Friedel-Crafts cyclization of phenethylpyrrolecarboxylic acids II (R² = OMe, OH, Cl) and by electrophilic substitution on the parent ketone I (R = R¹ = H). Substituents in the benzene ring of I were introduced by Friedel-Crafts cyclization of (pyrrolylethyl)benzoic acids III (R¹ = H, NO₂, iodo). Novel and efficient photochem. reactions were discovered for the direct introduction of the cyano and CF₃ groups into the pyrrole ring of I (R = R¹ = H). The latter reaction was extended to yield a series of trifluoromethylated heterocycles. In the experiment, the researchers used many compounds, for example, 7-Nitro-3,4-dihydroisoquinolin-1(2H)-one (cas: 22245-96-1Synthetic Route of C9H8N2O3).

7-Nitro-3,4-dihydroisoquinolin-1(2H)-one (cas: 22245-96-1) 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. It protonates to form salts upon treatment with strong acids, such as HCl. It forms adducts with Lewis acids, such as BF3.Synthetic Route of C9H8N2O3

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Fragment based search for small molecule inhibitors of HIV-1 Tat-TAR was written by Zeiger, Mirco;Stark, Sebastian;Kalden, Elisabeth;Ackermann, Bettina;Ferner, Jan;Scheffer, Ute;Shoja-Bazargani, Fatemeh;Erdel, Veysel;Schwalbe, Harald;Goebel, Michael W.. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2014.Formula: C9H8N2 This article mentions the following:

Basic mol. building blocks such as benzene rings, amidines, guanidines, and amino groups have been combined in a systematic way to generate ligand candidates for HIV-1 TAR RNA. Ranking of the resulting compounds was achieved in a fluorimetric Tat-TAR competition assay. Although simple mols. such as phenylguanidine are inactive, few iteration steps led to a set of ligands with IC₅₀ values ranging from 40 to 150 μM. 1,7-Diaminoisoquinoline 17 and 2,4,6-triaminoquinazoline 22 have been further characterized by NMR titrations with TAR RNA. Compound 22 is bound to TAR at two high affinity sites and shows slow exchange between the free ligand and the RNA complex. These results encourage investigations of dimeric ligands built from two copies of compound 22 or related heterocycles. In the experiment, the researchers used many compounds, for example, Isoquinolin-7-amine (cas: 23707-37-1Formula: C9H8N2).

Isoquinolin-7-amine (cas: 23707-37-1) 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 discovery of chloroquine, the most well-known drug containing this stent, has helped bring about decades of malaria control and treatment.Formula: C9H8N2

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Polyazanaphthalenes. VIII. Further derivatives of quinoxaline was written by Rydon, H. N.;Undheim, K.. And the article was included in Journal of the Chemical Society in 1962.Product Details of 7574-67-6 This article mentions the following:

Syntheses of some quinoxaline derivatives from benzene-1,2,3,5-tetra-amine and from 3,5-dinitro-1,2-phenylenediamine are described and the orientation of the products discussed. Analysis of the infrared spectra of a series of quinoxaline derivatives leads to the assignment of four ring-stretching vibration frequencies characteristic of this ring system. In the experiment, the researchers used many compounds, for example, 3-Chloroisoquinolin-1-amine (cas: 7574-67-6Product Details of 7574-67-6).

3-Chloroisoquinolin-1-amine (cas: 7574-67-6) 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.Product Details of 7574-67-6

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Electronic effects in isoquinoline systems was written by Zielinski, Wojciech;Kudelko, Agnieszka;Mazik, Monika. And the article was included in Polish Journal of Applied Chemistry in 1995.Category: isoquinoline This article mentions the following:

Values of pKa for 1-(N,N-dimethylamino)-3-methylisoquinoline and a series of their 6- and 7-substituted derivatives, 3-methylisoquinoline and 1-amino-3-methylisoquinoline were determined in 50% volume/volume aqueous-methanolic solution by the spectrophotometric method. The determined values of pKa and values of pKa for 1-phenyl-3-methylisoquinolines and 1,3-dimethylisoquinolines taken from literature were correlated with the Hammett σ constants Good correlations were obtained for 6-substituted derivatives with σ_p constants and for 7-substituted derivatives with σ_m constants The electronic effects occurring in the studied isoquinoline systems made by substituents present in pyridine and benzene ring are discussed basing on the determined values. In the experiment, the researchers used many compounds, for example, Isoquinolin-7-amine (cas: 23707-37-1Category: isoquinoline).

Isoquinolin-7-amine (cas: 23707-37-1) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. 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

Facile synthesis of 5- to 7-membered benzolactam compounds via strongly facilitated electrophilic aromtic substitution reaction was written by Kurouchi, Hiroaki;Otani, Yuko;Ohwada, Tomohiko. And the article was included in Heterocycles in 2016.Category: isoquinoline This article mentions the following:

Activation of aromatic ring-tethered carbamate compounds with trifluoromethanesulfonic acid to obtain benzolactams with 5- to 7-membered rings and examined the substrate scope and limitations of this activation method. In 5-membered ring formation, a halogen group on the aromatic ring did not greatly affect the reaction yield, but other electron-donating groups inhibited the cyclization reaction and various side-reactions occurred. In 7-membered ring formation, eletron-donating groups on aromatic ring promoted the cyclization reaction but cyclization of electron-deficient aromatic rings did not proceed well. The 6-membered ring formation reaction showed the greatest substrate generality. In the experiment, the researchers used many compounds, for example, 7-Nitro-3,4-dihydroisoquinolin-1(2H)-one (cas: 22245-96-1Category: isoquinoline).

7-Nitro-3,4-dihydroisoquinolin-1(2H)-one (cas: 22245-96-1) belongs to isoquinoline derivatives. The isoquinoline structure occurs in a considerable number of alkaloids in widely separated plant families. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Category: isoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Regioselective Bromination of Fused Heterocyclic N-Oxides was written by Wengryniuk, Sarah E.;Weickgenannt, Andreas;Reiher, Christopher;Strotman, Neil A.;Chen, Ke;Eastgate, Martin D.;Baran, Phil S.. And the article was included in Organic Letters in 2013.Recommanded Product: 36034-54-5 This article mentions the following:

A mild method for the regioselective C2-bromination of fused azine N-oxides is presented, employing tosic anhydride as the activator and tetra-n-butylammonium bromide as the nucleophilic bromide source. The C2-brominated compounds, e.g. I [X = H, 4-OMe, 6-OMe, etc.], are produced in moderate to excellent yields and with excellent regioselectivity in most cases. The potential extension of this method to other halogens, effecting C2-chlorination with Ts₂O/TBACl is also presented. Finally, this method could be incorporated into a viable one-pot oxidation/bromination process, using methyltrioxorhenium/urea hydropgen peroxide as the oxidant. In the experiment, the researchers used many compounds, for example, 4-Methoxyisoquinoline (cas: 36034-54-5Recommanded Product: 36034-54-5).

4-Methoxyisoquinoline (cas: 36034-54-5) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Recommanded Product: 36034-54-5

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Discovery of dual-acting opioid ligand and TRPV1 antagonists as novel therapeutic agents for pain was written by Lee, Hobin;Ahn, Songyeon;Ann, Jihyae;Ha, Heejin;Yoo, Young Dong;Kim, Young Ho;Hwang, Ji-Young;Hur, Kwang-Hyun;Jang, Choon-Gon;Pearce, Larry V.;Esch, Timothy E.;Lewin, Nancy E.;Blumberg, Peter M.;Lee, Jeewoo. And the article was included in European Journal of Medicinal Chemistry in 2019.Quality Control of Isoquinolin-7-amine This article mentions the following:

In order to discover a novel type of analgesic, dual activity ligands with TRPV1 antagonism and mu-opioid receptor affinity were investigated with the goal of eliciting synergistic analgesia while avoiding the side effects associated with single targeting. Based on a combination approach, a series of 4-benzyl-4-(dimethylamino)piperidinyl analogs I (R = 2,3-dihydrobenzofuran-6-yl, isoquinolin-8-yl, quinolin-5-yl, etc., R¹ = NH, HCCH₃) were designed, synthesized and evaluated for their receptor activities. Among them, compound I (R = quinolin-5-yl) exhibited the most promising dual-acting activity toward TRPV1 and the mu-opioid receptor in vitro. In vivo, compound I (R = quinolin-5-yl) displayed potent, dose-dependent antinociceptive activity in both the 1^st and 2^nd phases in the formalin assay. Consistent with its postulated mechanism, it was confirmed that in vivo, as in vitro, compound I (R = quinolin-5-yl) both antagonized TRPV1 and functioned as a mu-opioid agonist. This result indicates that dual-acting TRPV1 antagonist/mu-opioid ligands can be made and represent a new and promising class of analgesic. In the experiment, the researchers used many compounds, for example, Isoquinolin-7-amine (cas: 23707-37-1Quality Control of Isoquinolin-7-amine).

Isoquinolin-7-amine (cas: 23707-37-1) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. They are also used to make oil-soluble dyes, food colorants, pharmaceuticals, pH indicators and other organic compounds. Quality Control of Isoquinolin-7-amine

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Development of a Scalable Synthesis of a VEGFR Inhibitor was written by Chen, Ying;Crockett, Richard D.;Wang, Xin;Larsen, Robert D.;Cui, Sheng;Faul, Margaret M.. And the article was included in Synlett in 2013.Safety of Isoquinolin-7-amine This article mentions the following:

Process development and salt selection for a novel -VEGFR inhibitor are described. The overall convergent synthesis involved coupling of three key fragments, 2-chloronicotinoyl chloride, 4-isopropyl-3-methylaniline and 7-aminoisoquinoline. A cost-effective and scalable synthesis of 7-aminoisoquinoline was also achieved. A transition-metal-free SNAr process enabled the final C-N coupling to afford the target mol. A phosphate form of the drug substance with improved phys. properties was selected for further development and the corresponding crystallization process was subsequently developed. Overall, a robust six-step route was developed and demonstrated on multikilogram scales affording the target compound in >30% yield and high purity (>99%). In the experiment, the researchers used many compounds, for example, Isoquinolin-7-amine (cas: 23707-37-1Safety of Isoquinolin-7-amine).

Isoquinolin-7-amine (cas: 23707-37-1) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. Isoquinoline-type alkaloids show biological activities similar to those of morphinane-, protoberberine-, and benzophenanthridine-type alkaloids.Safety of Isoquinolin-7-amine

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Identification of ammonia based on a metalloporphyrin fluorescent sensor was written by Li, Yi-chun;Qi, Yong;Pan, Ji-gang. And the article was included in Huaxue Yanjiu Yu Yingyong in 2016.Recommanded Product: 90721-35-0 This article mentions the following:

The reagents based metalloporphyrins complex with a isoquinoline fluorophore have been synthesized and investigated as a′turn-onâ€?fluorescent ammonia sensor, and observed the formation kinetics of the sensor by using UV/Vis spectra. Ammonia quickly combined with Cobalt or Zinc in the center of sensors, while the 8-Amino-5-Bromo Isoquinoline(ABIQ) dissociated from the center of the ring, and emitted blue-green fluorescence with the irradiating of the excitation(λ_Ex=365nm), then achieving the detection of ammonia. In the experiment, the researchers used many compounds, for example, 5-Bromoisoquinolin-8-amine (cas: 90721-35-0Recommanded Product: 90721-35-0).

5-Bromoisoquinolin-8-amine (cas: 90721-35-0) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. 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.Recommanded Product: 90721-35-0

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

6,6-Fused heterocyclic ureas as highly potent TRPV1 antagonists was written by Sun, Wei;Kim, Hyo-Shin;Lee, Sunho;Jung, Aeran;Kim, Sung-Eun;Ann, Jihyae;Yoon, Suyoung;Sun, Choi;Lee, Jin Hee;Blumberg, Peter M.;Frank-Foltyn, Robert;Bahrenberg, Gregor;Schiene, Klaus;Stockhausen, Hannelore;Christoph, Thomas;Frormann, Sven;Lee, Jeewoo. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2015.Related Products of 23707-37-1 This article mentions the following:

A series of N-[{2-(4-methylpiperidin-1-yl)-6-(trifluoromethyl)-pyridin-3-yl}methyl] N’-(6,6-fused heterocyclic) ureas have been investigated as hTRPV1 antagonists. Among them, compound (I) showed highly potent TRPV1 antagonism to capsaicin, with K_i(ant) = 0.2 nM, as well as antagonism to other activators, and it was efficacious in a pain model. A docking study of I with our hTRPV1 homol. model indicates that there is crucial hydrogen bonding between the ring nitrogen and the receptor, contributing to its potency. In the experiment, the researchers used many compounds, for example, Isoquinolin-7-amine (cas: 23707-37-1Related Products of 23707-37-1).

Isoquinolin-7-amine (cas: 23707-37-1) 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.Related Products of 23707-37-1

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem