isoquinoline| Page 262 of 837 | Heterocyclic Building Blocks-Isoquinoline

Karmel, Caleb’s team published research in Journal of the American Chemical Society in 2020-06-10 | CAS: 151-10-0

Journal of the American Chemical Society published new progress about C-H bond activation. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Category: isoquinoline.

Karmel, Caleb published the artcileMechanism of the Iridium-Catalyzed Silylation of Aromatic C-H Bonds, Category: isoquinoline, the main research area is arene silylation mechanism iridium catalysis.

Phenanthroline ligands and [Ir(cod)(OMe)]2 form complexes that catalyze the silylation of aromatic and aliphatic C-H bonds. However, no exptl. data on the identity of complexes related to the mechanism of this process or the mechanisms by which they react to functionalize C-H bonds have been reported. Herein, we describe our studies on the mechanism of the iridium-catalyzed silylation of aryl C-H bonds. The resting state of the catalyst is an iridium disilyl hydride complex (phenanthroline)Ir(SiMe(OTMS)2)2(H)(L), in which L varies with the arene and additives. An iridium disilyl hydride complex was isolated, characterized, and allowed to react with arenes to form aryl silanes. The kinetics of the reactions of electron-rich and electron-poor arenes showed that the rate-limiting step varies with the electronic properties of the arene. Computational studies on related iridium silyl complexes revealed that the high activity of iridium complexes with sterically encumbered phenanthroline ligands is due to a change in the number of silyl groups bound to iridium between the resting state of the catalyst containing the hindered phenanthroline and that containing less hindered phenanthroline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Marinova, Maya’s team published research in Journal of Organic Chemistry in 2020-09-18 | CAS: 151-10-0

Journal of Organic Chemistry published new progress about Activation enthalpy (for racemization). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Safety of 1,3-Dimethoxybenzene.

Marinova, Maya published the artcileSynthesis, Resolution, Configurational Stability, and Properties of Cationic Functionalized [5]Helicenes, Safety of 1,3-Dimethoxybenzene, the main research area is helicene dye preparation resolution configurational stability.

A straightforward approach to the synthesis of two different series of cationic [5]helicenes has been achieved including, in dioxa series, the possibility to introduce aromatic functional groups at the periphery of the helical structure. While photophys. study highlights that the introduction of aryl substituents at position 23 of the helical moieties has a negligible impact on the optical properties, styryl substituents allow a welcoming extension of the conjugation pathways. Finally, a red shift of the optical properties was evidenced upon introduction of nitrogen atoms in the helicene scaffold, leading to particularly good fluorescence efficiencies in the red domain for a helicenic dye. Detailed information on racemization kinetics was collected for the most stable species upon direct high-performance liquid chromatog. (HPLC) resolution or, when configurational lability was too high, through VT-HPLC anal. on the chiral stationary phase (ΔG‡ values ranging from 85.0 to 137.1 kJ·mol-1 and above).

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yu, Zhifeng’s team published research in Proceedings of the National Academy of Sciences of the United States of America in 2021-03-02 | CAS: 5961-59-1

Proceedings of the National Academy of Sciences of the United States of America published new progress about Arylboronic acids Role: RCT (Reactant), RACT (Reactant or Reagent). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Quality Control of 5961-59-1.

Yu, Zhifeng published the artcileDiscovery and characterization of bromodomain 2-specific inhibitors of BRDT, Quality Control of 5961-59-1, the main research area is carboximido indazole preparation bromodomain inhibitor SAR mol docking; BET bromodomains; DNA-encoded chemistry; male contraceptive; small-molecule inhibitors.

To assess the contribution of each BRDT bromodomain, collection of DNA-encoded chem. libraries I [R = Me, MeO; R1 = 2,4-dimethylphenyl, 4-amino-2-methyl-Ph, 1-methylindol-2-yl, etc.] II [R2 = Me, Et, i-Pr; R3 = acetamido, [4-(methylcarbamoyl)benzoyl]amino; R4 = 6-amino-3-pyridyl, 2-aminopyrimidin-5-yl, 6-amino-4-methyl-3-pyridyl, 6-amino-2-methyl-3-pyridyl] and III [R5 = R6 = R7 = H, Me; R8 = H, acetamido, methylcarbamoyl, benzamido; R9 = H, Me, MeO] for BRDT-BD1 and BRDT-BD2 binders was screened. High-enrichment hits was identified and resynthesized off-DNA and examined for their ability to compete with JQ1 in BRDT and BRD4 bromodomain AlphaScreen assays. These studies identified I [R = Me, R1 = 4-amino-2-methyl-phenyl] as a selective BRDT-BD2 inhibitor with low nanomolar potency and >1,000-fold selectivity over BRDT-BD1. Structure-activity relationship studies of I [R = Me, R1 = 4-amino-2-methyl-phenyl] produced a series of addnl. BRDT-BD2/BRD4-BD2 selective inhibitors, including III [R5 = Me, R6 = R7 = H, R8 = acetamido, R9 = Me], a truncated analog of I [R = Me, R1 = 4-amino-2-methyl-phenyl] with similar activity, and II [R2 = Me, R3 = [4-(methylcarbamoyl)benzoyl]amino, R4 = 6-amino-4-methyl-3-pyridyl] an analog with sixfold selectivity for BRDT-BD2 vs. BRD4-BD2. BROMOscan bromodomain profiling confirmed the great affinity and selectivity of I [R = Me, R1 = 4-amino-2-methyl-phenyl] and III [R5 = Me, R6 = R7 = H, R8 = acetamido, R9 = Me] on all BET BD2 vs. BD1 with the highest affinity for BRDT-BD2. Cocrystals of BRDT-BD2 with CDD-1102 and CDD-1302 were determined at 2.27 and 1.90 Å resolution, resp., and revealed BRDT-BD2 specific contacts that explain the high affinity and selectivity of these compounds These BD2-specific compounds and their binding to BRDT-BD2 are unique compared with recent reports and enabled further evaluation of their nonhormonal contraceptive potential in-vitro and in-vivo.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wang, Jiaqin’s team published research in ACS Sustainable Chemistry & Engineering in 2020-08-17 | CAS: 598-50-5

ACS Sustainable Chemistry & Engineering published new progress about Biomass. 598-50-5 belongs to class isoquinoline, name is 1-Methylurea, and the molecular formula is C2H6N2O, Application of 1-Methylurea.

Wang, Jiaqin published the artcileInvestigation of Deep Eutectic Solvent-Based Microwave-Assisted Extraction and Efficient Recovery of Natural Products, Application of 1-Methylurea, the main research area is deep eutectic solvent microwave assisted natural.

A systematic study of the principles of deep eutectic solvent microwave-assisted extraction (DES-MAE) was performed. It was found that the heating rates of most DESs decreased (heat capacity increased) under microwave irradiation with increasing water content, allowing high-efficiency extraction for thermally sensitive compounds In addition, DESs containing carboxylic acids reacted with hydroxyl groups of sugar and choline chloride, resulting in cell wall destruction and inhibition of cellulose, hemicellulose and lignin reconnection in cell walls through hydrogen bonds, thus leading to better extraction performance. This was verified by extracting anthraquinones from rheum palmatum by using DES-MAE and optimizing extraction conditions. DES with citric acid as the hydrogen bonding donor gave the highest extraction efficiency under the optimized conditions. In addition, anthraquinones in the DES extract were recovered by using three kinds of silica modified by different functional groups. The results showed that material containing a Ph group is beneficial to the recovery of anthraquinones in acid-based DESs, because it can facilitate strong hydrophobic and π-π interactions. This study showcased the green chem. applications of DES-MAE in laboratory and industrial alike, and demonstrates the recovery of natural products from DES extracts The findings also provide valuable information for green extraction, modification, and applications of cellulose, hemicellulose and lignin.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Alvarez, M. et al. published their research in Science of Synthesis in 2005 |CAS: 74904-29-3

The Article related to review isoquinolinone preparation cyclization ring transformation, Heterocyclic Compounds (One Hetero Atom): Reviews and other aspects.Quality Control of 8-Methoxy-3,4-dihydroisoquinolin-1(2H)-one

Alvarez, M.; Joule, J. A. published an article in 2005, the title of the article was Product class 6: isoquinolinones.Quality Control of 8-Methoxy-3,4-dihydroisoquinolin-1(2H)-one And the article contains the following content:

A review primarily covering methods of preparation of 1(2H)-isoquinolinones and 3(2H)-isoquinolinones. Synthetic methods include cyclization, ring transformation, and substituent modification. The experimental process involved the reaction of 8-Methoxy-3,4-dihydroisoquinolin-1(2H)-one(cas: 74904-29-3).Quality Control of 8-Methoxy-3,4-dihydroisoquinolin-1(2H)-one

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Koizumi, Noriko et al. published their patent in 2015 |CAS: 1009104-85-1

The Article related to tgf signal inhibitor corneal endothelial ecm disease fuchs dystrophy, Pharmaceuticals: Formulation and Compounding and other aspects.Recommanded Product: 1-(6,7-Dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)-3-(1-methyl-2-phenyl-1H-pyrrolo[2,3-b]pyridin-3-yl)prop-2-en-1-one

On February 5, 2015, Koizumi, Noriko; Okumura, Naoki; Kinoshita, Shigeru published a patent.Recommanded Product: 1-(6,7-Dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)-3-(1-methyl-2-phenyl-1H-pyrrolo[2,3-b]pyridin-3-yl)prop-2-en-1-one The title of the patent was Drug for prevention or treatment of diseases associated with abnormalities in extracellular matrix (ECM) of corneal endothelium. And the patent contained the following:

The drug, especially for diseases associated with Fuchs’ corneal endothelial dystrophy. contains a TGF-β signal inhibitor. Also claimed are the TGF-β signal inhibitor for the drug, and the treatment/prevention method by administration of the TGF-β inhibitor. Such diseases include photophobia, blurred vision, vision disorders, eye pain, tearing, hyperemia, pain, bullous keratopathy, eye discomfort, contrast reduction, glare, edema of the corneal stroma, bullous keratopathy and corneal opacity. The TGF β-signal inhibitor may be 4-[4-(1,3-benzodioxole-5-yl)-5-(2-pyridinyl)-1H-imidazole-2-yl]benzamide. The experimental process involved the reaction of 1-(6,7-Dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)-3-(1-methyl-2-phenyl-1H-pyrrolo[2,3-b]pyridin-3-yl)prop-2-en-1-one(cas: 1009104-85-1).Recommanded Product: 1-(6,7-Dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)-3-(1-methyl-2-phenyl-1H-pyrrolo[2,3-b]pyridin-3-yl)prop-2-en-1-one

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Fish, Inbar et al. published their research in Journal of Medicinal Chemistry in 2017 |CAS: 74904-29-3

The Article related to muscarinic m2 receptor agonist structure based design preparation docking, Pharmacology: Structure-Activity and other aspects.Safety of 8-Methoxy-3,4-dihydroisoquinolin-1(2H)-one

On November 22, 2017, Fish, Inbar; Stossel, Anne; Eitel, Katrin; Valant, Celine; Albold, Sabine; Huebner, Harald; Moller, Dorothee; Clark, Mary J.; Sunahara, Roger K.; Christopoulos, Arthur; Shoichet, Brian K.; Gmeiner, Peter published an article.Safety of 8-Methoxy-3,4-dihydroisoquinolin-1(2H)-one The title of the article was Structure-Based Design and Discovery of New M2 Receptor Agonists. And the article contained the following:

Muscarinic receptor agonists are characterized by apparently strict restraints on their tertiary or quaternary amine and their distance to an ester or related center. On the basis of the active state crystal structure of the muscarinic M2 receptor in complex with iperoxo, the authors explored potential agonists that lacked the highly conserved functionalities of previously known ligands. Using structure-guided pharmacophore design followed by docking, the authors found two agonists (compounds 3 (2-(3-methoxyphenyl)-N,N,N-trimethylethan-1-aminium formate) and 17 (2-(benzofuran-6-yl)-N,N,N-trimethylethan-1-aminium formate)), out of 19 docked and synthesized compounds, that fit the receptor well and were predicted to form a hydrogen-bond conserved among known agonists. Structural optimization led to compound 28 (2-(2,3-dihydrobenzofuran-6-yl)-N,N,N-trimethylethan-1-aminium formate), which was 4-fold more potent than its parent 3. Fortified by the discovery of this new scaffold, the authors sought a broader range of chemotypes by docking 2.2 million fragments, which revealed another three micromolar agonists unrelated either to 28 or known muscarinics. Even pockets as tightly defined and as deeply studied as that of the muscarinic reveal opportunities for the structure-based design and the discovery of new chemotypes. The experimental process involved the reaction of 8-Methoxy-3,4-dihydroisoquinolin-1(2H)-one(cas: 74904-29-3).Safety of 8-Methoxy-3,4-dihydroisoquinolin-1(2H)-one

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Grubbs, Russell A. et al. published their research in Bioorganic & Medicinal Chemistry in 2004 |CAS: 58142-46-4

The Article related to dinoxyline analog preparation dopamine receptor agonist, Pharmacology: Structure-Activity and other aspects.HPLC of Formula: 58142-46-4

On March 15, 2004, Grubbs, Russell A.; Lewis, Mechelle M.; Owens-Vance, Connie; Gay, Elaine A.; Jassen, Amy K.; Mailman, Richard B.; Nichols, David E. published an article.HPLC of Formula: 58142-46-4 The title of the article was 8,9-Dihydroxy-1,2,3,11b-tetrahydrochromeno[4,3,2,-de]isoquinoline (dinoxyline), a high affinity and potent agonist at all dopamine receptor isoforms. And the article contained the following:

The synthesis and preliminary pharmacol. evaluation of 8,9-dihydroxy-1,2,3,11b-tetrahydrochromeno[4,3,2,-de]isoquinoline (5, now named dinoxyline) is described. This mol. was designed as a potential bioisostere that would conserve the essential elements of our β-phenyldopamine D1 pharmacophore (i.e., position and orientation of the nitrogen, hydroxyls, and Ph rings). Previously, we have rigidified these elements using alkyl bridges, as exemplified in the dopamine D1 full agonist mols. dihydrexidine (1) and dinapsoline (2). This approach has been modified and we now show that it is possible to tether these elements using an ether linkage. Preliminary pharmacol. has revealed that 5 is a potent full D1 agonist (K0.5 <10 nM; EC50=30 nM), but also has high affinity for brain D2-like and cloned D2 and D3 receptors. Interestingly, whereas 1 and 2 and their analogs have only moderate affinity for the human D4 receptor, 5 also has high affinity for this isoform. Moreover, although N-alkylation of 1 and 2 increases D2 affinity, the N-allyl (15) and N-Pr (17) derivatives of 5 had decreased D2 affinity. Therefore, 5 may be engaging different amino acid residues than do 1 and 2 when they bind to the D2 receptor. This is the first example of a ligand with high affinity at all dopamine receptors, yet with functional characteristics similar to dopamine. These rigid ligands also will be useful tools to determine specific residues of the receptor transmembrane domains that are critical for agonist ligand selectivity for the D4 receptor. The experimental process involved the reaction of 4-Bromo-5-nitroisoquinoline(cas: 58142-46-4).HPLC of Formula: 58142-46-4

The Article related to dinoxyline analog preparation dopamine receptor agonist, Pharmacology: Structure-Activity and other aspects.HPLC of Formula: 58142-46-4

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Frackenpohl, Jens et al. published their patent in 2013 |CAS: 74904-29-3

The Article related to isoquinolinone isoquinolinedione isoquinolinetrione preparation protection abiotic stress plant, Heterocyclic Compounds (One Hetero Atom): Quinolines and Isoquinolines and other aspects.SDS of cas: 74904-29-3

On January 10, 2013, Frackenpohl, Jens; Zeiss, Hans-Joachim; Heinemann, Ines; Willms, Lothar; Mueller, Thomas; Busch, Marco; Von Koskull-Doering, Pascal; Rosinger, Christopher Hugh; Dittgen, Jan; Hills, Martin Jeffrey published a patent.SDS of cas: 74904-29-3 The title of the patent was Use of substituted isoquinolinones, isoquinolinediones, isoquinolinetriones and dihydroisoquinolinones or in each case salts thereof as active agents against abiotic stress in plants and their preparation. And the patent contained the following:

The invention relates to the use of substituted isoquinolinones, isoquinolinediones, isoquinolinetriones and dihydroisoquinolinones of formula I or in each case salts thereof, for enhancing stress tolerance in plants against abiotic stress, for boosting plant growth and/or for increasing plant yield, and to special methods for producing the aforementioned compounds Compounds of formula I wherein Q is (un)substituted ethylene, (un)substituted ethenylene, (un)substituted oxoethylene, etc.; W is O and S; R1, R2, R3 and R4 are independently H, NO2, amino, OH, halo, etc.; R5 is H, OH, alkyl, cycloalkyl, etc.; and their salts are claimed. Example compound II was prepared by a multistep procedure (procedure given). All the invention compounds were evaluated for their ability to protect against abiotic stress in plants (some data given). The experimental process involved the reaction of 8-Methoxy-3,4-dihydroisoquinolin-1(2H)-one(cas: 74904-29-3).SDS of cas: 74904-29-3

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Jesudason, Cynthia D. et al. published their research in Bioorganic & Medicinal Chemistry Letters in 2006 |CAS: 74904-29-3

The Article related to h3 antihistaminic tetrahydroisoquinoline tetrahydroquinoline tetrahydroazepine preparation, Heterocyclic Compounds (One Hetero Atom): Quinolines and Isoquinolines and other aspects.COA of Formula: C10H11NO2

On July 1, 2006, Jesudason, Cynthia D.; Beavers, Lisa S.; Cramer, Jeffrey W.; Dill, Joelle; Finley, Don R.; Lindsley, Craig W.; Stevens, F. Craig; Gadski, Robert A.; Oldham, Samuel W.; Pickard, R. Todd; Siedem, Christopher S.; Sindelar, Dana K.; Singh, Ajay; Watson, Brian M.; Hipskind, Philip A. published an article.COA of Formula: C10H11NO2 The title of the article was Synthesis and SAR of novel histamine H3 receptor antagonists. And the article contained the following:

The synthesis and biol. evaluation of novel tetrahydroisoquinoline, tetrahydroquinoline, and tetrahydroazepine antagonists of the human and rat H3 receptors are described. The substitution around these rings as well as the nature of the substituent on nitrogen is explored. Several compounds with high affinity and selectivity for the human and rat H3 receptors are reported. The experimental process involved the reaction of 8-Methoxy-3,4-dihydroisoquinolin-1(2H)-one(cas: 74904-29-3).COA of Formula: C10H11NO2

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem