Heterocyclic Building Blocks-Isoquinoline

Determination of related substances in fasudil hydrochloride by HPLC was written by Ge, Xin;Meng, Xiangjun;Li, Naran. And the article was included in Guangpu Shiyanshi in 2011.Computed Properties of C14H18ClN3O2S This article mentions the following:

The determination of related substances in fasudil hydrochloride was investigated by HPLC on C₁₈ column, with methanol-ammonium dihydrogen phosphate (30:70, adjusting pH to 3.5 卤 0.05 with phosphoric acid) as mobile phase at the detection wavelength of 275 nm. The detection limit was 0.3 mg/mL for fasudil hydrochloride, and the main compound peak could entirely sep. from related substances. The method is simple, accurate and sensitive, that can be applied for determination of related substances in fasudil hydrochloride. 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. 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.Computed Properties of C14H18ClN3O2S

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Biodegradation of complex hydrocarbons in spent engine oil by novel bacterial consortium isolated from deep sea sediment was written by Ganesh Kumar, A.;Vijayakumar, Lakshmi;Joshi, Gajendra;Magesh Peter, D.;Dharani, G.;Kirubagaran, R.. And the article was included in Bioresource Technology in 2014.Safety of Isoquinoline-1-carboxylic acid This article mentions the following:

Complex hydrocarbon and aromatic compounds degrading marine bacterial strains were isolated from deep sea sediment after enrichment on spent engine (SE) oil. Phenotypic characterization and phylogenetic anal. of 16S rRNA gene sequences showed the isolates were related to members of the Pseudoalteromonas sp., Ruegeria sp., Exiguobacterium sp. and Acinetobacter sp. Biodegradation using 1% (volume/volume) SE oil with individual and mixed strains showed the efficacy of SE oil utilization within a short retention time. The addition of non-ionic surfactant 0.05% (volume/volume) Tween 80 as emulsifying agent enhanced the solubility of hydrocarbons and renders them more accessible for biodegradation The degradation of several compounds and the metabolites formed during the microbial oxidation process were confirmed by Fourier transform IR spectroscopy and Gas chromatog.-mass spectrometry analyses. The potential of this consortium to biodegrade SE oil with and without emulsifying agent provides possible application in bioremediation of oil contaminated marine environment. In the experiment, the researchers used many compounds, for example, Isoquinoline-1-carboxylic acid (cas: 486-73-7Safety of Isoquinoline-1-carboxylic acid).

Isoquinoline-1-carboxylic acid (cas: 486-73-7) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. The Pomeranz鈥揊ritsch 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.Safety of Isoquinoline-1-carboxylic acid

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Iterative Arylation of Amino Acids and Aliphatic Amines via 未-C(sp³)-H Activation: Experimental and Computational Exploration was written by Guin, Srimanta;Dolui, Pravas;Zhang, Xinglong;Paul, Satyadip;Singh, Vikas Kumar;Pradhan, Sukumar;Chandrashekar, Hediyala B.;Anjana, S. S.;Paton, Robert S.;Maiti, Debabrata. And the article was included in Angewandte Chemie, International Edition in 2019.Category: isoquinoline This article mentions the following:

Directed C-H functionalization has been realized as a complementary tool to the traditional approaches for a straightforward access of non-proteinogenic amino acids; albeit such a process is restricted mostly up to the 纬-position. In the present work, we demonstrate the diverse (hetero)arylation of amino acids and analogous aliphatic amines selectively at the remote 未-position by tuning the reactivity controlled by ligands. An organopalladium 未-C(sp³)-H activated intermediate has been isolated and crystallog. characterized. Mechanistic investigations carried out exptl. in conjunction with computational studies shed light on the difference in the mechanistic picture depending on the substrate structure. In the experiment, the researchers used many compounds, for example, 1-Hydroxyisoquinoline (cas: 491-30-5Category: isoquinoline).

1-Hydroxyisoquinoline (cas: 491-30-5) 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

Twisted Molecular Nanoribbons with up to 53 Linearly-Fused Rings was written by Dubey, Rajeev K.;Melle-Franco, Manuel;Mateo-Alonso, Aurelio. And the article was included in Journal of the American Chemical Society in 2021.Computed Properties of C50H62N2O4 This article mentions the following:

The synthesis of three mol. nanoribbons with a twisted aromatic framework is described. The largest one shows a 53 linearly fused rings backbone (12.9 nm) and 322 conjugated atoms in its aromatic core (C₂₉₆N₂₄S₂). This new family of nanoribbons shows extremely high molar absorptivities, reaching 986 100 M^-1 cm^-1, and red-emitting properties. 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: 110590-84-6Computed Properties of C50H62N2O4).

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. Quinoline is a catabolite of tryptophan, the basic structure of some antihypertensive drugs, such as the peripheral vasodilators prazosin and doxazosin. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Computed Properties of C50H62N2O4

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Directly linked zinc phthalocyanine-perylenediimide dyads and a triad for ultrafast charge separation was written by Zink-Lorre, Nathalie;Font-Sanchis, Enrique;Seetharaman, Sairaman;Karr, Paul A.;Sastre-Santos, Angela;D鈥睸ouza, Francis;Fernandez-Lazaro, Fernando. And the article was included in Chemistry – A European Journal in 2019.Safety of 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:

Directly linked to promote strong intramol. interactions, donor-acceptor dyads and a donor-acceptor-donor triad featuring zinc phthalocyanine (ZnPc) as electron donor and perylenediimide (PDI) as electron acceptor have been synthesized and characterized. Owing to complementary absorption features of the entities, improved light absorption was witnessed in these conjugates. The optimized geometry and electronic structures showed the majority of the HOMO (HOMO) on the ZnPc entity, whereas the LUMO (LUMO) was on the PDI entity, suggesting that the charge-separated states would be ZnPc⁺-PDI^.-. The electrochem. and free-energy calculations suggested exothermic energy and/or electron transfer processes via the singlet states of PDI or ZnPc entities depending on the excitation wavelength of the laser used. The measured rates using femtosecond pump-probe spectroscopy coupled with global anal. of transient data revealed ultrafast energy transfer from ¹PDI* to ZnPc followed by charge separation However, when ZnPc was selectively excited, only electron transfer was witnessed wherein the time constants for forward and reverse electron transfer processes followed Marcus predictions. The absorption in a wide section of the solar spectrum and the ultrafast charge separation suggest the usefulness of these systems as good photosynthetic models. 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: 110590-84-6Safety of 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. Although isoquinoline derivatives can be synthesized by several methods, relatively few direct methods deliver the unsubstituted isoquinoline. Other industrial applications include their use as corrosion inhibitors, preservatives, and as solvents for resins and terpenes.Safety of 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

Diphenylselenium bistrifluoroacetate: a new reagent for biomimetic oxidations of amines and amino acids was written by Marino, Joseph P.;Larsen, Robert D. Jr.. And the article was included in Journal of the American Chemical Society in 1981.Computed Properties of C11H9NO2 This article mentions the following:

The mild two electron oxidation of quinolines I [R = MeO; R¹ = H, Me, CO₂H, 3,4-(MeO)₂C₆H₃CH₂; R²-R⁴ = H] and carbolines II (R⁵ = H, Me; R⁶, R⁷ = H; R⁸ = H, CO₂Me) by Ph₂Se(OCOCF₃)₂ (III) gave the corresponding I (R³R⁴ = bond) and II (R⁶R⁷ = bond) in high yields. Iminium cations were prepared regiospecifically when I (R = MeO, H; R¹, R³ = H; R² = H, CO₂Me; R⁴ = Me) were treated with III. I (R = R¹ = R³ = R⁴ = H; R² = CO₂H, CO₂Me) were oxidatively decarboxylated by III to give the corresponding isoquinolines. The mechanistic rationale for these oxidations was discussed based on the formation of an intermediate azulene. In the experiment, the researchers used many compounds, for example, Methyl isoquinoline-3-carboxylate (cas: 27104-73-0Computed Properties of C11H9NO2).

Methyl isoquinoline-3-carboxylate (cas: 27104-73-0) 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 C11H9NO2

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Novel dithiano-thieno fused perylene diimides: synthesis, characterization and application in organic thin-film transistors (OTFTs) was written by Li, Gang;Li, Dandan;Liu, Xitong;Xu, Haixiao;Zhang, Jing;Wang, Shuaihua;Liu, Zhenhua;Tang, Bo. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2019.Category: isoquinoline This article mentions the following:

Three novel perylene diimides featuring [1,2]dithiine and sulfur annulation onto the PDI core and different branched alkyl chains have been designed and facilely synthesized. The organic thin-film transistor (OTFT) devices based on the as-synthesized compounds showed maximum electron mobilities of up to 0.008 cm² V^-1 s^-1 under an ambient atm. 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: 110590-84-6Category: isoquinoline).

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. The isoquinoline structure occurs in a considerable number of alkaloids in widely separated plant families. Other industrial applications include their use as corrosion inhibitors, preservatives, and as solvents for resins and terpenes.Category: isoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Tailoring Small Molecules for an Allosteric Site on Procaspase-6 was written by Murray, Jeremy;Giannetti, Anthony M.;Steffek, Micah;Gibbons, Paul;Hearn, Brian R.;Cohen, Frederick;Tam, Christine;Pozniak, Christine;Bravo, Brandon;Lewcock, Joe;Jaishankar, Priyadarshini;Ly, Cuong Q.;Zhao, Xianrui;Tang, Yinyan;Chugha, Preeti;Arkin, Michelle R.;Flygare, John;Renslo, Adam R.. And the article was included in ChemMedChem in 2014.Formula: C9H7NO This article mentions the following:

Although they represent attractive therapeutic targets, caspases have so far proven recalcitrant to the development of drugs targeting the active site. Allosteric modulation of caspase activity is an alternate strategy that potentially avoids the need for anionic and electrophilic functionality present in most active-site inhibitors. Caspase-6 has been implicated in neurodegenerative disease, including Huntington’s and Alzheimer’s diseases. Herein we describe a fragment-based lead discovery effort focused on caspase-6 in its active and zymogen forms. Fragments were identified for procaspase-6 using surface plasmon resonance methods and subsequently shown by X-ray crystallog. to bind a putative allosteric site at the dimer interface. A fragment-merging strategy was employed to produce nanomolar-affinity ligands that contact residues in the L2 loop at the dimer interface, significantly stabilizing procaspase-6. Because rearrangement of the L2 loop is required for caspase-6 activation, our results suggest a strategy for the allosteric control of caspase activation with drug-like small mols. In the experiment, the researchers used many compounds, for example, 1-Hydroxyisoquinoline (cas: 491-30-5Formula: C9H7NO).

1-Hydroxyisoquinoline (cas: 491-30-5) 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鈥揊ritsch 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.Formula: C9H7NO

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Facile Synthesis of Tricyclic 1,2,4-Oxadiazolines-Fused Tetrahydro-Isoquinolines from Oxime Chlorides with 3,4-Dihydroisoquinoline Imines was written by Wang, Kaikai;Li, Yanli;Zhang, Wei;Chen, Rongxiang;Ma, Xueji;Wang, Mingyue;Zhou, Nan. And the article was included in Molecules in 2022.Reference of 3382-18-1 This article mentions the following:

A mild and efficient strategy for the synthesis of tricyclic 1,2,4-oxadiazolines-fused tetrahydroisoquinolines derivatives via [3 + 2] cycloaddition reaction was reported. The reactions provided the functionalized tricyclic 1,2,4-oxadiazolines in high yields (up to 96%). This protocol was simple and easy to handle. Moreover, a gram-scale experiment further highlights the synthetic utility. The chem. structure of the product was determined by X-ray single-crystal structure anal. A possible mechanism for this transformation was proposed to explain the reaction process. In the experiment, the researchers used many compounds, for example, 6,7-Dimethoxy-3,4-dihydroisoquinoline (cas: 3382-18-1Reference of 3382-18-1).

6,7-Dimethoxy-3,4-dihydroisoquinoline (cas: 3382-18-1) belongs to isoquinoline derivatives. Quinoline and its derivatives are widely used as fungicides, biological agents, antibiotics, alkaloids, dyes, rubber chemicals and flavoring agents. Isoquinoline-type alkaloids show biological activities similar to those of morphinane-, protoberberine-, and benzophenanthridine-type alkaloids.Reference of 3382-18-1

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Rhodium(III)- and Ruthenium(II)-Catalyzed Olefination of Isoquinolones was written by Zhao, Peng;Niu, Rui;Wang, Fen;Han, Keli;Li, Xingwei. And the article was included in Organic Letters in 2012.Reference of 491-30-5 This article mentions the following:

NH and N-protected isoquinolones undergo Rh(III)-catalyzed oxidative olefination at the 8-position with terminal alkenes to afford alkenylated derivatives, e.g., I (R¹ = H, Me, MeO, Cl; R² = H, n-Pr, n-Bu, SiMe₃). Complementary redox-neutral olefination of such isoquinolones using internal alkynes was achieved under ruthenium catalysis. In the experiment, the researchers used many compounds, for example, 1-Hydroxyisoquinoline (cas: 491-30-5Reference of 491-30-5).

1-Hydroxyisoquinoline (cas: 491-30-5) 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.Reference of 491-30-5

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem