Category: indole-building-block

Avula, Sreenivas; Peng, Xudan; Lang, Xingfen; Tortorella, Micky; Josselin, Beatrice; Bach, Stephane; Bourg, Stephane; Bonnet, Pascal; Buron, Frederic; Ruchaud, Sandrine; Routier, Sylvain; Neagoie, Cleopatra published the artcile< Design and biological evaluation of substituted 5,7-dihydro-6H-indolo[2,3-c]quinolin-6-one as novel selective Haspin inhibitors>, Category: indole-building-block, the main research area is dihydroindoloquinolinone preparation; protein kinase haspin inhibition SAR antitumor cytotoxicity mol docking; Haspin kinase; Indoloquinoline; cell viability; docking.

A library of substituted indolo[2,3-c]quinolone-6-ones was developed as simplified Lamellarin isosters. Synthesis was achieved from indole after a four-step pathway sequence involving iodination, a Suzuki-Miyaura cross-coupling reaction and a reduction/lactamization sequence. The inhibitory activity of the 20 novel derivatives was assessed on Haspin kinase. Two of them possessed an IC50 of 1 and 2 nM with selectivity towards a panel of 10 other kinases including the parent kinases DYRK1A and CLK1. The most selective compound exerted addnl. a very interesting cell effect on the osteosarcoma U-2 OS cell line.

Journal of Enzyme Inhibition and Medicinal Chemistry published new progress about Antitumor agents. 399-76-8 belongs to class indole-building-block, and the molecular formula is C9H6FNO2, Category: indole-building-block.

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Fang, Fang; Zheng, Haolin; Li, Weipeng; Mao, Guojiang; Chen, Shanping; Deng, Guo-Jun published the artcile< Metal- and Solvent-Free Synthesis of Maleimide Fused Carbazoles from (Indol-3-yl)cyclohexanones and Maleimides>, Recommanded Product: Methyl 1H-indole-7-carboxylate, the main research area is indolyl cyclohexanone maleimide trimethylsulfoxonium iodide catalyst cyclization; maleimide fused carbazole preparation.

A metal- and solvent-free strategy for the preparation of maleimide-fused carbazoles had been developed. This protocol started from 2-(indol-3-yl)cyclohexanones and maleimides, provided various maleimide-fused carbazoles in 45-90% yields. The present approach was catalyzed by trimethylsulfoxonium iodide and involved a cascade of oxidation, [4+2] annulation, and dehydrogenative aromatization. Moreover, these maleimide-fused carbazole products could be further transformed into other polycyclic aromatic hydrocarbons.

Advanced Synthesis & Catalysis published new progress about Aromatization. 93247-78-0 belongs to class indole-building-block, and the molecular formula is C10H9NO2, Recommanded Product: Methyl 1H-indole-7-carboxylate.

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Guan, Dongliang; Rahman, Toufiqur Md; Gay, Elaine A.; Vasukuttan, Vineetha; Mathews, Kelly M.; Decker, Ann M.; Williams, Alexander H.; Zhan, Chang-Guo; Jin, Chunyang published the artcile< Indole-Containing Amidinohydrazones as Nonpeptide, Dual RXFP3/4 Agonists: Synthesis, Structure-Activity Relationship, and Molecular Modeling Studies>, Safety of 4-Methyl-1H-indole-3-carbaldehyde, the main research area is indole amidinohydrazone preparation SAR mol modeling RXFP3 RXFP4 agonist.

Herein, the first structure-activity relationship studies of a series of novel nonpeptide amidinohydrazone-based agonists I [R1 = H, 4-Me, 7-F, etc.; R2 = H, Me; R3 = ; 4-ClC6H4, 3,4-di-ClC6H3, 2-thienyl, etc.; R4 = H, Me; n = 0,1,2,3], which were characterized by RXFP3 functional and radioligand binding assays was reported. Several potent and efficacious RXFP3 agonists compound I [R1 = 5-CN-7-Me, R2 = H, R3 = 4-CO2MeC6H4, R4 = H, n = 2] were identified with EC50 values <10 nM. These compounds also had high potency at RXFP4 but no agonist activity at RXFP1, demonstrating > 100-fold selectivity for RXFP3/4 over RXFP1. In vitro ADME and pharmacokinetic assessments revealed that the amidinohydrazone derivatives might have limited brain permeability.

Journal of Medicinal Chemistry published new progress about Amidrazones Role: PAC (Pharmacological Activity), PKT (Pharmacokinetics), PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), BIOL (Biological Study), RACT (Reactant or Reagent), PREP (Preparation). 4771-48-6 belongs to class indole-building-block, and the molecular formula is C10H9NO, Safety of 4-Methyl-1H-indole-3-carbaldehyde.

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Wang, Zhao-Yang; Guo, Rui-Li; Zhang, Xing-Long; Wang, Meng-Yue; Chen, Gang-Ni; Wang, Yong-Qiang published the artcile< Regioselective C5-H direct iodination of indoles>, COA of Formula: C10H9NO, the main research area is iodo indole regioselective preparation; aryl iodide iodosuccinimide iodination.

An efficient regioselective C5-H direct iodination of indoles I [R = H, 6-Cl, 4-Me, etc.; R1 = C(O)H, CN, C(O)OMe, C(O)OEt] was developed for the first time. Due to the versatility of aryl iodides, the method offered a general and practical access to the C5 functionalization of indoles. The approach featured mild reaction conditions, good tolerance of functional groups and more crucially, no metal involved in the reaction, thereby benefitting the late-stage decoration of medicinal mols. A mechanistic study showed that the current iodination reaction proceeded via a radical pathway.

Organic Chemistry Frontiers published new progress about Aryl iodides Role: PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 4771-48-6 belongs to class indole-building-block, and the molecular formula is C10H9NO, COA of Formula: C10H9NO.

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Kredel, Julia; Gallei, Markus published the artcile< Ozone-Degradable Fluoropolymers on Textile Surfaces for Water and Oil Repellency>, Formula: C30H36N4O2, the main research area is ozone degradable fluoropolymer textile surfaces water oil repellency.

Resistant and functional coatings on surfaces have been of growing interest recently. Functional textiles featuring water- and oil-repellent properties can be achieved by convenient coating of textiles with highly fluorinated polymers. Recently, concerns about (per)fluorinated mols. have been reported due to the high persistence and accumulation capabilities in nature, driving the textile market to develop alternatives and novel strategies. Within this study an ozone-degradable fluorinated polymer for water and oil repellency on various textiles is reported. The monomer 2-((1,1,2-trifluoro-2-(perfluoropropoxy)ethyl)thio)ethyl acrylate is capable of side-chain degradation upon ozone treatment due to the presence of chem. cleavable moieties. The degradable fluorine-containing polymer is accessible via radical polymerization in emulsion polymerization and can be directly applied onto various textiles, e.g., polyamide, polyester, Nomex, or cotton, by using a foulard. To investigate the homogeneous coating performance on the resp. textiles, a model polymer featuring a fluorescent monomer as part of the polymer chain is prepared, enabling the investigation of the polymer distribution via confocal microscopy. Finally, the effect of the fluorine moieties and the molar mass of the polymers is investigated, and the ozone-induced degradation is elucidated. The herein-described fluorinated polymers are envisaged to be a promising and nonpersistent platform for the preparation of omniphobic textile coating.

ACS Applied Polymer Materials published new progress about Cellulose pulp. 950846-89-6 belongs to class indole-building-block, and the molecular formula is C30H36N4O2, Formula: C30H36N4O2.

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Harada, Hiroshi; Hirokawa, Yoshimi; Suzuki, Kenji; Hiyama, Yoichi; Oue, Mayumi; Kawashima, Hitoshi; Yoshida, Naoyuki; Furutani, Yasuji; Kato, Shiro published the artcile< Novel and potent human and rat β3-adrenergic receptor agonists containing substituted 3-indolylalkylamines>, Name: 4-Methyl-1H-indole-3-carbaldehyde, the main research area is indolylalkylamine preparation adrenergic agonist.

A novel series of 2-(3-indolyl)alkylamino-1-(3-chlorophenyl)ethanols was prepared and evaluated for in vitro ability to stimulate cAMP production in Chinese hamster ovary cells expressing cloned human β3-adrenergic receptor (AR). The optically active I was found to be the most potent and selective human β3-AR agonist in this series with an EC50 value of 0.062 nM. In addition, the selectivity of I for human β3-AR was 210-fold and 103-fold that for human β2-AR and β1-AR, resp. Furthermore, I showed potent agonistic activity at rat β3-AR.

Bioorganic & Medicinal Chemistry Letters published new progress about Aryl aldehydes, heteroaryl Role: RCT (Reactant), RACT (Reactant or Reagent). 4771-48-6 belongs to class indole-building-block, and the molecular formula is C10H9NO, Name: 4-Methyl-1H-indole-3-carbaldehyde.

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Yu, Hui-juan; Zhao, Wei; Xie, Mengting; Li, Xiaoqing; Sun, Ming; He, Jun; Wang, Lu; Yu, Lin published the artcile< Real-Time Monitoring of Self-Aggregation of β-Amyloid by a Fluorescent Probe Based on Ruthenium Complex>, Formula: C9H6FNO2, the main research area is self aggregation beta amyloid ruthenium complex fluorescent imaging.

Self-accumulation of amyloid-β protein (Aβ) into insoluble fibrils is the major hallmark of Alzheimer’s disease. Real-time monitoring of fibril growth is essential for clarifying the mechanism underlying aggregation and discovering therapeutic targets. A variety of approaches including NMR, electron microscopy (EM), at. force microscopy (AFM), and total internal reflection fluorescence microscopy (TIRFM) have been explored to monitor the fibril growth or reveal morphol. of Aβ aggregates. However, none of the methods allow real-time observation under physiol. conditions while without any perturbations. Here, the authors present a fluorescent probe [Ru(phen)2(fipc)]2+ (Ru-fipc) (phen = 1,10-phenanthroline, fipc = 5-fluoro-N-(1,10-phenanthrolin-5-yl)-1H-indole-2-carboxamide) that can bind to all the Aβ forms, i.e., monomers, oligomers, and fibrils, while not perturbing aggregation. Using this probe in combination with laser confocal microscopy, the entire aggregation process could be clearly and exactly imaged at the single fibril level. The reliability of Ru-fipc was confirmed based on colocalization with thioflavin T (ThT). Importantly, Ru-fipc can be used to monitor the very early nucleation and oligomerization process, which is thought to be a critical step in the development of neurotoxicity while it cannot be visualized with ThT. To the knowledge, this is the first fluorescent probe developed for real-time monitoring of Aβ aggregation, especially for the very early assembly stage, in solution with minimal perturbation. This method is suitable for in vitro and in vivo studies. The authors believe this would provide a valuable complementary tool for the study of pathogenesis and discovery of therapeutic targets of neurodegenerative diseases.

Analytical Chemistry (Washington, DC, United States) published new progress about Confocal laser scanning microscopy. 399-76-8 belongs to class indole-building-block, and the molecular formula is C9H6FNO2, Formula: C9H6FNO2.

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Cengiz, Nergiz published the artcile< Fabrication of Multifunctional Stimuli-Responsive Hydrogels Susceptible to both pH and Metal Cation for Visual Detections>, Safety of 2-(2-Aminoethyl)-3′,6′-bis(diethylamino)spiro[isoindoline-1,9′-xanthen]-3-one, the main research area is multifunctional stimuli responsive hydrogel pH metal cation colorimetric sensor.

Advances in several areas of contemporary biomaterial science are closely related to the design of stimuli-responsive smart materials. An important aspect that governs widespread adaptation of a synthetic biomaterial depends on its ease of synthesis, as well as facile functionalization. Readily available homo-bifunctional PEG-based diamines are mixed with a tetra-arm epoxide based cross-linker to yield hydrogels through the epoxy-amine addition reaction. Hydrogels obtained with varying chain lengths of PEG polymer were characterized for their morphol., swelling, and rheol. properties. The residual epoxide groups within the hydrogel were used for post-gelation functionalization to obtain a functional material. In particular, functionalization with an amine-containing rhodamine derivative yields a hydrogel that serves as a colorimetric sensor for acidic pH environment, and indicates Fe3+ cation with high specificity.

Macromolecular Chemistry and Physics published new progress about Cations. 950846-89-6 belongs to class indole-building-block, and the molecular formula is C30H36N4O2, Safety of 2-(2-Aminoethyl)-3′,6′-bis(diethylamino)spiro[isoindoline-1,9′-xanthen]-3-one.

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Yang, Ze-ren; Zhang, Bo; Long, Yong-jie; Shi, Min published the artcile< Palladium-catalyzed hydroamination of vinylidenecyclopropane-diester with pyrroles and indoles: an approach to azaaromatic vinylcyclopropanes>, Name: Methyl 1H-indole-7-carboxylate, the main research area is indole vinylidienecyclopropane diester palladium catalyst hydroamination; dialkyl vinylcyclopropane dicarboxylate indole preparation; pyrrole vinylidienecyclopropane diester palladium catalyst hydroamination; diethyl vinylcyclopropane dicarboxylate pyrrole preparation.

A new method for the synthesis of azaarom. vinylcyclopropanes (VCPs) was disclosed in this paper by using pyrrole or indole derivatives as nucleophilic reagents to react with vinylidenecyclopropane-diesters (VDCP-diesters) in the presence of a Pd catalyst, a phosphine ligand and a base under mild conditions in up to 98% yield with a reasonable substrate scope. This reaction was one of the few examples of hydroamination at electron-rich allene’s β-position. A plausible reaction mechanism has also been proposed through a zwitterionic π-propargyl N-palladium species according to the previous work and the obtained deuterium labeling exptl. result.

Chemical Communications (Cambridge, United Kingdom) published new progress about Aromatic compounds, azo Role: SPN (Synthetic Preparation), PREP (Preparation). 93247-78-0 belongs to class indole-building-block, and the molecular formula is C10H9NO2, Name: Methyl 1H-indole-7-carboxylate.

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Zheng, Ming; Hou, Jing; Hua, Li-Li; Tang, Wan-Ying; Zhan, Le-Wu; Li, Bin-Dong published the artcile< Visible-Light-Mediated Divergent Silylfunctionalization of Alkenes>, COA of Formula: C10H9NO2, the main research area is visible light mediated divergent silylfunctionalization alkene hydrosilane; beta alkoxy alkylthio hydroxy indolyl silane preparation.

1,2-Silylfunctionalization of alkenes is an efficient way to construct highly functionalized silicon-containing compounds However, examples of 1,2-silylfunctionalization of alkenes using readily available hydrosilanes are limited. Herein, authors present a visible-light-mediated divergent 1,2-silylfunctionalization of alkenes using hydrosilane under ambient conditions. A series of β-alkoxy, β-alkylthio, β-hydroxy, and β-indolyl silanes was obtained in good to excellent yields. Moreover, vinylsilanes were successfully prepared in the absence of an addnl. nucleophile.

Organic Letters published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 93247-78-0 belongs to class indole-building-block, and the molecular formula is C10H9NO2, COA of Formula: C10H9NO2.

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles