Month: October 2022

Fang, Zaixiang; Wang, Yi; Wang, Yuanhua published the artcile< Synthesis of 4-Iodoisoquinolin-1(2H)-ones by a Dirhodium(II)-Catalyzed 1,4-Bisfunctionalization of Isoquinolinium Iodide Salts>, HPLC of Formula: 90806-58-9, the main research area is iodoisoquinoline preparation; rhodium catalyst aerobic iodination oxidation alkylisoquinolinium iodide acetoxybenziodoxolone.

In the presence of Rh2(esp)2, N-alkylisoquinolinium iodides such as N-methylisoquinolinium iodide underwent aerobic iodination and oxidation with acetoxybenziodoxolone in MeOH at 50° to yield 4-iodo-1-isoquinolinones such as I. The method was used to prepare an intermediate in the synthesis of the CRTH2 antagonist CRA-680.

Organic Letters published new progress about Crystal structure. 90806-58-9 belongs to class isoquinoline, and the molecular formula is C10H9NO, HPLC of Formula: 90806-58-9.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Krapcho, A. Paul; Petry, Mary E.; Getahun, Zelleka; Landi, John J. Jr.; Stallman, John; Polsenberg, Johanna F.; Gallagher, Cynthia E.; Maresch, Martin J.; Hacker, Miles P. published the artcile< 6,9-Bis[(aminoalkyl)amino]benzo[g]isoquinoline-5,10-diones. A Novel Class of Chromophore-Modified Antitumor Anthracene-9,10-diones: Synthesis and Antitumor Evaluations>, SDS of cas: 144511-13-7, the main research area is anthracenedione preparation antitumor; benzoisoquinoline preparation antitumor.

Synthetic procedures have been developed which lead to the 2-aza congeners I (R = amine groups or N-containing heterocyclic groups) and several related N-oxides (II, R = NH2 or NMe2). I exhibited a wide range of in vitro cytotoxicity against L1210 leukemia, the human colon adenocarcinoma cell line LoVo, and the doxorubicin resistant LoVo/DX cell line. Selected analogs of I showed significant P388 antileukemic activity in mice with I (R = NH2, n = 2) exhibiting high activity. This activity was also retained in the related N-oxide II (R = NH2, n = 2). These heterocyclic bioisosteric models are representative of the first anthracene-9,10-diones which display antileukemic activity comparable to mitoxantrone.

Journal of Medicinal Chemistry published new progress about Antitumor agents. 144511-13-7 belongs to class isoquinoline, and the molecular formula is C13H5F2NO2, SDS of cas: 144511-13-7.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liang, Jun; Van Abbema, Anne; Balazs, Mercedesz; Barrett, Kathy; Berezhkovsky, Leo; Blair, Wade S.; Chang, Christine; Delarosa, Donnie; De Voss, Jason; Driscoll, Jim; Eigenbrot, Charles; Goodacre, Simon; Ghilardi, Nico; MacLeod, Calum; Johnson, Adam; Bir Kohli, Pawan; Lai, Yingjie; Lin, Zhonghua; Mantik, Priscilla; Menghrajani, Kapil; Nguyen, Hieu; Peng, Ivan; Sambrone, Amy; Shia, Steven; Smith, Jan; Sohn, Sue; Tsui, Vickie; Ultsch, Mark; Williams, Karen; Wu, Lawren C.; Yang, Wenqian; Zhang, Birong; Magnuson, Steven published the artcile< Identification of an imidazopyridine scaffold to generate potent and selective TYK2 inhibitors that demonstrate activity in an in vivo psoriasis model>, Synthetic Route of 552331-06-3, the main research area is imidazopyridine derivative preparation TYK2 inhibitor psoriasis; IL-23; Imidazopyridine; Kinase; Psoriasis; TYK2.

Herein we report identification of an imidazopyridine class of potent and selective TYK2 inhibitors, exemplified by prototype 6, through constraint of the rotatable amide bond connecting the pyridine and aryl rings of compound 1. Further optimization led to generation of compound 30 that potently inhibits the TYK2 enzyme and the IL-23 pathway in cells, exhibits selectivity against cellular JAK2 activity, and has good pharmacokinetic properties. In mice, compound 30 demonstrated dose-dependent reduction of IL-17 production in a PK/PD model as well as in an imiquimod-induced psoriasis model. In this efficacy model, the IL-17 decrease was accompanied by a reduction of ear thickness indicating the potential of TYK2 inhibition as a therapeutic approach for psoriasis patients.

Bioorganic & Medicinal Chemistry Letters published new progress about Antipsoriatic agents. 552331-06-3 belongs to class isoquinoline, and the molecular formula is C9H5BrClN, Synthetic Route of 552331-06-3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Evison, Benny J.; Palmer, James T.; Lambert, Gilles; Treutlein, Herbert; Zeng, Jun; Nativel, Brice; Chemello, Kevin; Zhu, Qing; Wang, Jie; Teng, Yanfen; Tang, Wei; Xu, Yanfeng; Rathi, Anuj Kumar; Kumar, Sanjay; Suchowerska, Alexandra K.; Parmar, Jasneet; Dixon, Ian; Kelly, Graham E.; Bonnar, James published the artcile< A small molecule inhibitor of PCSK9 that antagonizes LDL receptor binding via interaction with a cryptic PCSK9 binding groove>, Safety of Isoquinolin-8-ylboronic acid, the main research area is cardiovascular disease PCSK9 LDL receptor cholesterol mall moleculep; Cardiovascular disease; LDL cholesterol; LDL receptor; Low density lipoprotein (LDL); Proprotein convertase (PC) subtilisin kexin type 9 (PCSK9); Small molecule.

Proprotein convertase (PC) subtilisin kexin type 9 (PCSK9) inhibits the clearance of low d. lipoprotein (LDL) cholesterol from plasma by directly interacting with the LDL receptor (LDLR). As the interaction promotes elevated plasma LDL cholesterol levels and a predisposition to cardiovascular disease (CVD), it has attracted much interest as a therapeutic target. While anti-PCSK9 monoclonal antibodies have been successful in the treatment of hypercholesteremia by decreasing CVD risk, their high cost and a requirement for injection have prohibited widespread use. The advent of an orally bioavailable small mol. inhibitor of the PCSK9-LDLR interaction is an attractive alternative, however efforts have been tempered as the binding interface is unfavorable for binding by small organic mols. Despite its challenging nature, we report herein the discovery of compound 3f as a small mol. inhibitor of PCSK9. The kinase inhibitor nilotinib emerged from a computational screen that was applied to identify compounds that may bind to a cryptic groove within PCSK9 and proximal to the LDLR-binding interface. A subsequent in vitro PCSK9-LDLR binding assay established that nilotinib was a bona fide but modest inhibitor of the interaction (IC50 = 9.8 μM). Through multiple rounds of medicinal chem., 3f emerged as a lead-like mol. by demonstrating disruption of the PCSK9-LDLR interaction at nanomolar levels in vitro (IC50 = 537 nM) with no inhibitory activity (IC50 > 10 μM) against a small panel of kinases. Compound 3f restored LDL uptake by liver cells at sub-micromolar levels and demonstrated excellent bioavailability when delivered s.c. in mice. Most significantly, compound 3f lowered total cholesterol levels in the plasma of wild-type mice, thereby providing proof-of-concept that the notion of a small mol. inhibitor against PCSK9 is therapeutically viable.

Bioorganic & Medicinal Chemistry published new progress about Bioavailability. 721401-43-0 belongs to class isoquinoline, and the molecular formula is C9H8BNO2, Safety of Isoquinolin-8-ylboronic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chilamari, Maheshwerreddy; Immel, Jacob R.; Bloom, Steven published the artcile< General Access to C-Centered Radicals: Combining a Bioinspired Photocatalyst with Boronic Acids in Aqueous Media>, HPLC of Formula: 721401-43-0, the main research area is radical preparation photocatalyzed oxidation boronic acid catalyst reaction mechanism; conjugate addition reaction radical Michael acceptor.

Carbon-centered radicals are indispensable building blocks for modern synthetic chem. In recent years, visible light photoredox catalysis has become a promising avenue to access C-centered radicals from a broad array of latent functional groups, including boronic acids. Herein, we present an aqueous protocol wherein water features a starring role to help transform aliphatic, aromatic, and heteroaromatic boronic acids to C-centered radicals with a bioinspired flavin photocatalyst. These radicals are used to deliver a diverse pool of alkylated products, including three pharmaceutically relevant compounds, via open-shell conjugate addition to disparate Michael acceptors. The mechanism of the reaction is investigated by computational studies, deuterium labeling, radical-trapping experiments, and spectroscopic anal.

ACS Catalysis published new progress about Alkylation (deborylative-alkylation). 721401-43-0 belongs to class isoquinoline, and the molecular formula is C9H8BNO2, HPLC of Formula: 721401-43-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Alamudun, Sophya F.; Tanovitz, Kyle; Fajardo, April; Johnson, Kaitlind; Pham, Andy; Jamshidi Araghi, Tina; Petit, Andrew S. published the artcile< Structure-Photochemical Function Relationships in Nitrogen-Containing Heterocyclic Aromatic Photobases Derived from Quinoline>, Name: 5-Methoxyisoquinoline, the main research area is nitrogen containing heterocyclic aromatic photobasicity structure photochem function relationship.

Photobases are compounds that become strong bases after electronic excitation. Recent exptl. studies have highlighted the photobasicity of the 5-R quinoline compounds, demonstrating a strong substituent dependence to the pKa*. In this paper, we describe our systematic study of how the thermodn. driving force for photobasicity is tuned through substituents in four families of nitrogen-containing heterocyclic aromatics We show that substituent position and identity both significantly impact the pKa*. We demonstrate that the substituent effects are additive and identify many disubstituted compounds with substantially greater photobasicity than the most photobasic 5-R quinoline compound identified previously. We show that the addition of a second fused benzene ring to quinoline, along with two electron-donating substituents, lowers the S0 → SPBS vertical excitation energy into the visible region while still maintaining a pKa* > 14. Overall, the structure-function relationships developed in this study provide new insights to guide the development of new photocatalysts that employ photobasicity.

Journal of Physical Chemistry A published new progress about Aromatic nitrogen heterocycles Role: PRP (Properties). 90806-58-9 belongs to class isoquinoline, and the molecular formula is C10H9NO, Name: 5-Methoxyisoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wu, Yue; Guo, Peng; Chen, Long; Duan, Weijie; Yang, Zengzhuan; Wang, Tao; Chen, Ting; Xiong, Fei published the artcile< Iron-catalyzed tandem oxidative coupling and acetal hydrolysis reaction to prepare formylated benzothiazoles and isoquinolines>, Safety of 5-Methoxyisoquinoline, the main research area is azole dioxolone iron tandem Minisci type oxidative coupling hydrolysis; carbonyl azole preparation green chem; isoquinoline dioxolone iron tandem Minisci type oxidative coupling hydrolysis; formylisoquinoline preparation green chem.

The direct formylation of benzothiazoles and isoquinolines was reported. The reaction features a novel iron-catalyzed Minisci-type oxidative coupling process using com. available 1,3-dioxolane as a formylated reagent followed by acetal hydrolysis without a separation process. The reaction was performed under exceedingly mild reaction conditions and exhibited broad functional group tolerance.

Chemical Communications (Cambridge, United Kingdom) published new progress about Alkyl aryl ketones Role: SPN (Synthetic Preparation), PREP (Preparation). 90806-58-9 belongs to class isoquinoline, and the molecular formula is C10H9NO, Safety of 5-Methoxyisoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Montgomery, Deanna; Anand, Jessica P.; Baber, Mason A.; Twarozynski, Jack J.; Hartman, Joshua G.; Delong, Lennon J.; Traynor, John R.; Mosberg, Henry I. published the artcile< Structure-activity relationships of 7-substituted dimethyltyrosine-tetrahydroisoquinoline opioid peptidomimetics>, Reference of 721401-43-0, the main research area is dimethyltyrosine tetrahydroisoquinoline opioid peptidomimetic structure activity; multifunctional ligands; opioids; peptidomimetic; structure-activity.

The opioid receptors modulate a variety of biol. functions, including pain, mood, and reward. As a result, opioid ligands are being explored as potential therapeutics for a variety of indications. Multifunctional opioid ligands, which act simultaneously at more than one type of opioid receptor, show promise for use in the treatment of addiction, pain, and other conditions. Previously, we reported the creation of bifunctional kappa opioid receptor (KOR) agonist/mu opioid receptor (MOR) partial agonist ligands from the classically delta opioid receptor (DOR) antagonist selective dimethyltyrosine-tetrahydroisoquinoline (Dmt-Tiq) scaffold through the addition of a 7-benzyl pendant on the tetrahydroisoquinoline ring. This study further explores the structure-activity relationships surrounding 7-position pendants on the Dmt-Tiq scaffold. Some analogs maintain a KOR agonist/MOR partial agonist profile, which is being explored in the development of a treatment for cocaine addiction. Others display a MOR agonist/DOR antagonist profile, which has potential to be used in the creation of a less addictive pain medication. Ultimately, we report the synthesis and in vitro evaluation of novel opioid ligands with a variety of multifunctional profiles.

Molecules published new progress about Cell membrane. 721401-43-0 belongs to class isoquinoline, and the molecular formula is C9H8BNO2, Reference of 721401-43-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mansour, Oula C.; Evison, Benny J.; Sleebs, Brad E.; Watson, Keith G.; Nudelman, Abraham; Rephaeli, Ada; Buck, Damian P.; Collins, J. Grant; Bilardi, Rebecca A.; Phillips, Don R.; Cutts, Suzanne M. published the artcile< New Anthracenedione Derivatives with Improved Biological Activity by Virtue of Stable Drug-DNA Adduct Formation>, Category: isoquinoline, the main research area is anthracenedione amino derivative DNA adduct formation.

Mitoxantrone is an anticancer agent that acts as a topoisomerase II poison, however, it can also be activated by formaldehyde to form DNA adducts. Pixantrone, a 2-aza-anthracenedione with terminal primary amino groups in its side chains, forms formaldehyde-mediated adducts with DNA more efficiently than mitoxantrone. Mol. modeling studies indicated that extension of the “”linker”” region of anthracenedione side arms would allow the terminal primary amino greater flexibility and thus access to the guanine residues on the opposite DNA strand. New derivatives based on the pixantrone and mitoxantrone backbones were synthesized, and these incorporated primary amino groups as well as extended side chains. The stability of DNA adducts increased with increasing side chain length of the derivatives A mitoxantrone derivative bearing extended side chains (I) formed the most stable adducts with ∼100-fold enhanced stability compared to mitoxantrone. This finding is of great interest because long-lived drug-DNA adducts are expected to perturb DNA-dependent functions at all stages of the cell cycle.

Journal of Medicinal Chemistry published new progress about Acute promyelocytic leukemia. 144511-13-7 belongs to class isoquinoline, and the molecular formula is C13H5F2NO2, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Guo, Ya-Ru; Wu, Peng-Xiang; Xu, Han-Mei; Qi, Wei-Yan published the artcile< A new 1,5-dihydroxy-4-methoxyisoquinoline from Scolopendra subspinipes mutilans>, Application In Synthesis of 3336-49-0, the main research area is dihydroxymethoxyisoquinoline Scolopendra; Scolopendra subspinipes mutilans ; Cancer; Cytotoxic activities; Isoquinoline alkaloid; Migration.

A new isoquinoline, 1,5-dihydroxy-4-methoxyisoquinoline (1), was obtained from Scolopendra subspinipes mutilans. Compound 1 showed moderate cytotoxicity on tumor cells with IC50 values ranging from 13 to 26 μM against five esophageal squamous cancer cells whereas low cytotoxicity against normal human esophageal epithelial cells. Isoquinoline ring oxidized at C(1), C(4), and C(5) can enhance its cytotoxicity. In addition, compound 1 showed potent inhibitory effect (inhibition rate > 50% at 13 μM) on cell migration in human umbilical vein endothelial cells. This article mainly studies the structure and activity of 1, and more modification of 1 as a potential anticancer agent.

Chemistry & Biodiversity published new progress about Antitumor agents. 3336-49-0 belongs to class isoquinoline, and the molecular formula is C9H7NO, Application In Synthesis of 3336-49-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem