Category: isoquinoline

Coombs, John R. published the artcileAdvances in Base-Metal Catalysis: Development of a Screening Platform for Nickel-Catalyzed Borylations of Aryl (Pseudo)halides with B₂(OH)₄, Recommanded Product: Isoquinolin-5-ylboronic acid, the publication is Organometallics (2019), 38(1), 157-166, database is CAplus.

Investigations into nickel-catalyzed borylation reactions have led to the development of an exptl. design of 24 reaction conditions for rapid lead identification. A case study on the borylation of a model aryl bromide with B₂(OH)₄ prompted a series of mechanistic and stability studies to better understand the catalytic cycle and factors that affect robustness. HTEx was employed to study the effect of a series of scavengers on the remediation of nickel from the reaction stream. These combined results have generated an increased understanding of nickel-catalyzed borylation reactions and set the stage for their expanded use in process chem.

Organometallics published new progress about 371766-08-4. 371766-08-4 belongs to isoquinoline, auxiliary class Isoquinoline,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is Isoquinolin-5-ylboronic acid, and the molecular formula is C9H8BNO2, Recommanded Product: Isoquinolin-5-ylboronic acid.

Referemce:
https://en.wikipedia.org/wiki/Isoquinoline,
Isoquinoline | C9H7N – PubChem

Bensch, Lisa published the artcile5-(Hetero)aryl-Substituted 9-Hydroxyphenalenones: Synthesis and Electronic Properties of Multifunctional Donor-Acceptor Conjugates, Category: isoquinoline, the publication is Chemistry – A European Journal (2017), 23(44), 10551-10558, database is CAplus and MEDLINE.

5-(Hetero)aryl-substituted 9-hydroxyphenalenones (9-HP) can be readily synthesized by Suzuki coupling of 5-bromo 9-HP with (hetero)aryl boronic acid (derivatives) without protection of the hydroxyl functionality in moderate to excellent yields (57-94 %). A library of 5-(hetero)aryl substituted 9-HP with broad substituent variation was studied with respect to their electronic properties (absorption and emission spectroscopies and cyclic voltammetry) and their computed electronic structures. All compounds show reversible reductive potentials between -1230 and -1110 mV and the donor-substituted representatives possess irreversible oxidation potentials around 600 mV. Compounds with electron-rich donors even show reversible oxidation potentials. Especially the donor-substituted 9-HPs display emission bands between 466 and 567 nm with quite large Stokes shifts (up to 4100 cm^-1). TD-DFT calculations nicely reproduce the spectroscopic data and Hammett correlations underline a pronounced resonance substituent influence on the photophys. properties.

Chemistry – A European Journal published new progress about 371766-08-4. 371766-08-4 belongs to isoquinoline, auxiliary class Isoquinoline,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is Isoquinolin-5-ylboronic acid, and the molecular formula is C9H8BNO2, Category: isoquinoline.

Referemce:
https://en.wikipedia.org/wiki/Isoquinoline,
Isoquinoline | C9H7N – PubChem

Du, Wei published the artcileEnantioselective Palladium-Catalyzed Oxidative Cascade Cyclization of Aliphatic Alkenyl Amides, Synthetic Route of 2058236-53-4, the publication is Organic Letters (2017), 19(2), 316-319, database is CAplus and MEDLINE.

The catalyst system of Pd(TFA)₂/(S,S)-diPh-pyrox is reported to promote the highly efficient enantioselective oxidative cascade cyclization of alkene-tethered aliphatic acrylamides under mild aerobic conditions. Pyrrolizidine derivatives were synthesized in good yield and excellent enantioselectivity. D-labeling experiments revealed that the reaction proceeded through an anti-aminopalladation (anti-AP) pathway with high selectivity. The transition states for the anti-AP step account for the observed enantioselectivity.

Organic Letters published new progress about 2058236-53-4. 2058236-53-4 belongs to isoquinoline, auxiliary class Mono-oxazoline Ligands, name is (S)-2-(Isoquinolin-1-yl)-4-phenyl-4,5-dihydrooxazole, and the molecular formula is C18H14N2O, Synthetic Route of 2058236-53-4.

Referemce:
https://en.wikipedia.org/wiki/Isoquinoline,
Isoquinoline | C9H7N – PubChem

Goldfogel, Matthew J. published the artcileAdvancing Base-Metal Catalysis: Development of a Screening Method for Nickel-Catalyzed Suzuki-Miyaura Reactions of Pharmaceutically Relevant Heterocycles, Application In Synthesis of 371766-08-4, the publication is Organic Process Research & Development (2022), 26(3), 785-794, database is CAplus.

Interest in replacing palladium catalysts with base metals resulted in the development of a 24-reaction screening platform for identifying nickel-catalyzed Suzuki-Miyaura reaction conditions. This method was designed to be directly applicable to process scale-up by employing homogeneous reaction conditions alongside stable and inexpensive nickel(II) precatalysts and has proven to be broadly suitable for complex heterocyclic substrates relevant to bioactive mols. These advances were enabled by the key discovery that a methanol additive greatly improves the reaction performance and enables the use of organic-soluble amine bases. The screening platform and scale-up workflow were applied to a representative cross-coupling using the antipsychotic perphenazine and enabled the rapid development of a gram-scale synthesis that highlighted the utility of this method and the advantages of nickel catalysis for metal remediation.

Organic Process Research & Development published new progress about 371766-08-4. 371766-08-4 belongs to isoquinoline, auxiliary class Isoquinoline,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is Isoquinolin-5-ylboronic acid, and the molecular formula is C9H8BNO2, Application In Synthesis of 371766-08-4.

Referemce:
https://en.wikipedia.org/wiki/Isoquinoline,
Isoquinoline | C9H7N – PubChem

Solum, Eirik published the artcileNew CDK8 inhibitors as potential anti-leukemic agents – Design, synthesis and biological evaluation, Product Details of C9H8BNO2, the publication is Bioorganic & Medicinal Chemistry (2020), 28(10), 115461, database is CAplus and MEDLINE.

Cyclin-dependent kinase 8 (CDK8) plays a vital role in regulating cell transcription either through its association with the mediator complex or by the phosphorylation of transcription factors. CDK8-mediated activation of oncogenes has proved to be important in a variety of cancer types including hematol. malignancies. We have designed and synthesized a series of new synthetic steroids. The compounds were evaluated as CDK8 inhibitors in vitro. The three most potent compounds exhibit K_d-values towards CDK8 in the low nanomolar range (3.5-18 nM). Furthermore, the compounds displayed selectivity for CDK8 in a panel of 465 different kinases. The cell studies indicated a selectivity to kill AML-cancer cell lines compared to normal cell lines.

Bioorganic & Medicinal Chemistry published new progress about 371766-08-4. 371766-08-4 belongs to isoquinoline, auxiliary class Isoquinoline,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is Isoquinolin-5-ylboronic acid, and the molecular formula is C37H30ClIrOP2, Product Details of C9H8BNO2.

Referemce:
https://en.wikipedia.org/wiki/Isoquinoline,
Isoquinoline | C9H7N – PubChem

Lee, Ihl Young Choi published the artcileSynthesis of quinolyl- and isoquinolyl heteroarylamines using palladium catalyzed Suzuki cross-coupling reaction, Safety of Isoquinolin-5-ylboronic acid, the publication is Heterocycles (2005), 65(10), 2505-2511, database is CAplus.

Quinolyl- and isoquinolylboronic acids are prepared from 5-bromoquinoline and 5-bromoisoquinoline, resp., via halogen-metal exchange. Suzuki cross-coupling of these compounds with haloheteroarylamines leads to the corresponding heteroarylamines.

Heterocycles published new progress about 371766-08-4. 371766-08-4 belongs to isoquinoline, auxiliary class Isoquinoline,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is Isoquinolin-5-ylboronic acid, and the molecular formula is C9H8BNO2, Safety of Isoquinolin-5-ylboronic acid.

Referemce:
https://en.wikipedia.org/wiki/Isoquinoline,
Isoquinoline | C9H7N – PubChem

Kubo, Takuya published the artcileSimple and Effective Label-Free Capillary Electrophoretic Analysis of Sugars by Complexation Using Quinoline Boronic Acids, Recommanded Product: Isoquinolin-5-ylboronic acid, the publication is Analytical Chemistry (Washington, DC, United States) (2015), 87(10), 5068-5073, database is CAplus and MEDLINE.

An effective separation and detection procedure for sugars by capillary electrophoresis (CE) using a complexation between quinolineboronic acid (QBA) and multiple hydroxyl structure of sugar alc. is reported. We investigated the variation of fluorescence spectra of a variety of QBAs with sorbitol at a wide range of pH conditions and then found that 5-isoQBA strongly enhanced the fluorescence intensity by the complexation at basic pH conditions. The other sugar alcs. having multiple hydroxyls also revealed the enhancement of the fluorescence intensity with 5-isoQBA, whereas the alternation of the intensity was not found in the sugars such as glucose. After optimization of the 5-isoQBA concentration and pH of the buffered solution in CE anal., 6 sugar alcs. were successfully separated in the order based on the formation constants with 5-isoQBA, which were calculated from the variation of the fluorescence intensity with each sugar alc. and 5-isoQBA. Furthermore, the limits of detection for sorbitol and xylitol by the CE method were estimated at 15 and 27 μM, resp.

Analytical Chemistry (Washington, DC, United States) published new progress about 371766-08-4. 371766-08-4 belongs to isoquinoline, auxiliary class Isoquinoline,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is Isoquinolin-5-ylboronic acid, and the molecular formula is C9H8BNO2, Recommanded Product: Isoquinolin-5-ylboronic acid.

Referemce:
https://en.wikipedia.org/wiki/Isoquinoline,
Isoquinoline | C9H7N – PubChem

Savitha, Bhaskaran published the artcileA Highly Efficient Catalyst for the Suzuki-Miyaura Cross-Coupling Reaction of 5-(5-chloropyridin-3-yl)-3-methyl-1,3,4-oxadiazol-2(3H)-one, Quality Control of 371766-08-4, the publication is Journal of Heterocyclic Chemistry (2018), 55(10), 2277-2283, database is CAplus.

A highly efficient protocol for the synthesis of diverse aryl(heteroaryl) substituted pyridyl oxadiazol-2(3H)-one analogs using Suzuki-Miyaura cross-coupling strategy under microwave irradiation conditions is developed. The method is found to be compatible with a wide range of aryl(heteroaryl) boronic acids.

Journal of Heterocyclic Chemistry published new progress about 371766-08-4. 371766-08-4 belongs to isoquinoline, auxiliary class Isoquinoline,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is Isoquinolin-5-ylboronic acid, and the molecular formula is C9H8BNO2, Quality Control of 371766-08-4.

Referemce:
https://en.wikipedia.org/wiki/Isoquinoline,
Isoquinoline | C9H7N – PubChem

Ni, Nanting published the artcileProbing the general time scale question of boronic acid binding with sugars in aqueous solution at physiological pH, Category: isoquinoline, the publication is Bioorganic & Medicinal Chemistry (2012), 20(9), 2957-2961, database is CAplus and MEDLINE.

The boronic acid group is widely used in chemosensor design due to its ability to reversibly bind diol-containing compounds The thermodn. properties of the boronic acid-diol binding process have been investigated extensively. However, there are few studies of the kinetic properties of such binding processes. In this report, stopped-flow method was used for the first time to study the kinetic properties of the binding between three model arylboronic acids, 4-, 5-, and 8-isoquinolinylboronic acids, and various sugars. With all the boronic acid-diol pairs examined, reactions were complete within seconds. The k_on values with various sugars follow the order of D-fructose > D-tagatose > D-mannose > D-glucose. This trend tracks the thermodn. binding affinities for these sugars and demonstrates that the ‘on’ rate is the key factor determining the binding constant

Bioorganic & Medicinal Chemistry published new progress about 371766-08-4. 371766-08-4 belongs to isoquinoline, auxiliary class Isoquinoline,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is Isoquinolin-5-ylboronic acid, and the molecular formula is C9H8BNO2, Category: isoquinoline.

Referemce:
https://en.wikipedia.org/wiki/Isoquinoline,
Isoquinoline | C9H7N – PubChem

Gonzalez Cabrera, Diego published the artcile2,4-Diaminothienopyrimidines as Orally Active Antimalarial Agents, HPLC of Formula: 371766-08-4, the publication is Journal of Medicinal Chemistry (2014), 57(3), 1014-1022, database is CAplus and MEDLINE.

A novel series of 2,4-diaminothienopyrimidines with potential as antimalarials was identified from whole-cell high-throughput screening of a SoftFocus ion channel library. Synthesis and structure-activity relationship studies identified compounds with potent antiplasmodial activity and low in vitro cytotoxicity. Several of these analogs exhibited in vivo activity in the Plasmodium berghei mouse model when administered orally. However, inhibition of the hERG potassium channel was identified as a liability for this series.

Journal of Medicinal Chemistry published new progress about 371766-08-4. 371766-08-4 belongs to isoquinoline, auxiliary class Isoquinoline,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is Isoquinolin-5-ylboronic acid, and the molecular formula is C9H8BNO2, HPLC of Formula: 371766-08-4.

Referemce:
https://en.wikipedia.org/wiki/Isoquinoline,
Isoquinoline | C9H7N – PubChem