Day: November 21, 2022

Chen, Yiding published the artcileDirect Copper-Catalyzed Three-Component Synthesis of Sulfonamides, Quality Control of 371766-08-4, the publication is Journal of the American Chemical Society (2018), 140(28), 8781-8787, database is CAplus and MEDLINE.

Sulfonamides such as N-(phenylsulfonyl)morpholine were prepared in one step by coupling of aryl-, heteroaryl-, and alkenylboronic acids such as phenylboronic acid with cyclic and acyclic alkyl secondary amines such as morpholine and primary anilines and the bis(sulfur dioxide) complex of DABCO (DABSO) in the presence of Cu(OTf)₂ and 4,4′-dimethoxy-2,2′-bipyridine in DMSO. The method was used on gram scale and was used to prepare sulfonamides from drugs and drug fragments.

Journal of the American Chemical Society 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

Yamaoka, Nagahisa published the artcileIdentification of novel plasminogen activator inhibitor-1 inhibitors with improved oral bioavailability: Structure optimization of N-acylanthranilic acid derivatives, Formula: C9H8BNO2, the publication is Bioorganic & Medicinal Chemistry Letters (2018), 28(4), 809-813, database is CAplus and MEDLINE.

Novel plasminogen activator inhibitor-1 (PAI-1) inhibitors with highly improved oral bioavailability were discovered by structure-activity relationship studies on N-acyl-5-chloroanthranilic acid derivatives Because lipophilic N-acyl groups seemed to be important for the anthranilic acid derivatives to strongly inhibit PAI-1, synthesis of compounds in which 5-chloroanthranilic acid was bound to a variety of highly lipophilic moieties with appropriate linkers was investigated. As the result it appeared that some of the derivatives possessing aryl- or heteroaryl-substituted Ph groups in the acyl chain had potent in vitro PAI-1 inhibitory activity. Oral absorbability of typical compounds was also evaluated in rats, and three compounds which have diverse chem. structure with each other, e.g., I, were selected for further pharmacol. evaluation.

Bioorganic & Medicinal Chemistry Letters 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 C9H5FO2, Formula: C9H8BNO2.

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

Gokanapalli, Anusha published the artcileInvestigation of Pd-PEPPSI catalysts and coupling partners towards direct C2-arylation/heteroarylation of benzoxazole, Synthetic Route of 371766-08-4, the publication is Applied Organometallic Chemistry (2021), 35(8), e6296, database is CAplus.

The motive of this current work was to conduct the direct C2-arylation reaction on benzoxazole with various cross-coupling partners like aryl/heteroaryl halide/carboxylic acid/diazonium tetrafluoroborate/sulfonyl chloride/boronic acids in the presence of different sym. and unsym. Pd-PEPPSI (pyridine-enhanced pre-catalyst preparation by stabilization initiation) catalysts via C (sp²)-C (sp²) bond formation. Compared with other coupling partners, boronic acids coupled with benzoxazole very efficiently in the presence of sterically and electronically tunable bulky 1,3-bis(N,N’-2,4,6-triisopropylbenzyl)benzimidazolium-Pd-PEPPSI complex in open air to offer the corresponding C2-aryl/heteroaryl benzoxazole compounds I [Ar = Ph, 4-MeC₆H₄, 3-thienyl, etc.]. Further, it was worthy to mention that there was no need of any external oxidant/ligand/additive for the complete conversion of starting mols. to products. The reactions progressed successfully with a wide range of substrate scope and attained the products in good to excellent yields in a short reaction time in ethanol/water (1:1) medium. Greatly, catalysts could be recovered and reused for few cycles with significant reactivity.

Applied Organometallic 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, Synthetic Route of 371766-08-4.

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

Solum, Eirik J. published the artcileSynthesis and biological evaluation of analogs of didehydroepiandrosterone as potential new anticancer agents, Category: isoquinoline, the publication is Molecules (2020), 25(13), 3052, database is CAplus and MEDLINE.

The synthesis, cytotoxicity and inhibition of CDK8 by thirteen analogs I (Ar = C₆H₅, isoquinolin-5-yl, indole-5-yl, etc.) of cortistatin A are reported. These efforts revealed that the analogs with either a 6- or 7-isoquinoline or 5-indole side chain in the 17-position are the most promising anti-proliferative agents. These compounds exhibited potent cytotoxic effects in CEM, HeLa and HMEC-1 cells. All three compounds exhibited IC₅₀ values < 10μM. The analog I (Ar = indole-5-yl) exhibited an IC50 value of 0.59μM towards the human dermal microvascular endothelial cell line (HMEC-1), significantly lower than the reference standard 2-methoxyestradiol. At a concentration at 50 nM the most potent I (Ar = isoquinolin-5-y) compound reduced the activity of CDK8 to 35%.

Molecules 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 C22H18Cl2N2, Category: isoquinoline.

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

Zhou, Chao published the artcileMetal-Free, Redox-Neutral, Site-Selective Access to Heteroarylamine via Direct Radical-Radical Cross-Coupling Powered by Visible Light Photocatalysis, COA of Formula: C10H10N2, the publication is Journal of the American Chemical Society (2020), 142(39), 16805-16813, database is CAplus and MEDLINE.

Transition-metal-catalyzed C-N bond-forming reactions have emerged as fundamental and powerful tools to construct arylamines, a common structure found in drug agents, natural products, and fine chems. Reported herein is an alternative access to heteroarylamine via radical-radical cross-coupling pathway, powered by visible light catalysis without any aid of external oxidant and reductant. Only by visible light irradiation of a photocatalyst, such as a metal-free photocatalyst, does the cascade single-electron transfer event for amines and heteroaryl nitriles occur, demonstrated by steady-state and transient spectroscopic studies, resulting in an amine radical cation and aryl radical anion in situ for C-N bond formation. The metal-free and redox economic nature, high efficiency, and site-selectivity of C-N cross-coupling of a range of available amines, hydroxylamines, and hydrazines with heteroaryl nitriles make this protocol promising in both academic and industrial settings.

Journal of the American Chemical Society published new progress about 46000-11-7. 46000-11-7 belongs to isoquinoline, auxiliary class Isoquinoline,Amine, name is N-Methylisoquinolin-1-amine, and the molecular formula is C18H28N2O7, COA of Formula: C10H10N2.

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

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

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

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

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