M.W=150-200 | - Page 29 of 152 - Indole Building Blocks

Lu, Lin’s team published research in Chinese Journal of Chemistry in 2021-08-31 | 4771-48-6

Chinese Journal of Chemistrypublished new progress about Alkenes Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 4771-48-6 belongs to class indole-building-block, and the molecular formula is C10H9NO, Reference of 4771-48-6.

Lu, Lin; Zheng, Zuoliang; Yang, Yongjie; Liu, Bo; Yin, Biaolin published the artcile< Access to Polycyclic Indol(en)ines via Base-Catalyzed Intramolecular Dearomatizing 3-Alkenylation of Alkynyl Indoles>, Reference of 4771-48-6, the main research area is indolylmethylpropynamide sodium methoxide catalyst diastereoselective regioselective dearomatization alkenylation spirocyclization; methylidene spiroindolepyrrolidinone preparation; methylidenyl dihydrospiroindolepyrrolidinone preparation; carbamoyl indolylmethylpropynamide sodium methoxide catalyst dearomatization alkenylation cyclization; tetrahydropyrrolopyrroloindole dione preparation diastereoselective regioselective.

Polycyclic indolines and indolenines were synthesized via base-catalyzed intramol. dearomatizing 3-alkenylation reactions of alkynyl indoles at room temperature The base enhanced the nucleophilicity of the carbon at the 3-position of the indole moiety, facilitating an exclusive 5-exo-dig cyclization reaction with the alkyne to form spiroindolenines I, III [R3 = Et, Pr, iso-Pr, etc]. The imine functionality of spiroindolenines I was undergo in-situ nucleophilic addition to form spiroindolines II [R1 = H, 4-Me, 5-Cl, etc.; R2 = Ph, 2-methylphenyl, 3-methylphenyl; R3 = Pr, benzyl, 4-methoxyphenyl; R4 = tert-Bu, cyclohexyl] when R was a carbamoyl group or reduction to form spiroindolines III when R was H.

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

Sellmer, Andreas’s team published research in European Journal of Medicinal Chemistry in 2020-05-01 | 101083-92-5

European Journal of Medicinal Chemistrypublished new progress about Acute myeloid leukemia. 101083-92-5 belongs to class indole-building-block, and the molecular formula is C7H5N3O2, Product Details of C7H5N3O2.

Sellmer, Andreas; Pilsl, Bernadette; Beyer, Mandy; Pongratz, Herwig; Wirth, Lukas; Elz, Sigurd; Dove, Stefan; Henninger, Sven Julian; Spiekermann, Karsten; Polzer, Harald; Klaeger, Susan; Kuster, Bernhard; Boehmer, Frank D.; Fiebig, Heinz-Herbert; Kraemer, Oliver H.; Mahboobi, Siavosh published the artcile< A series of novel aryl-methanone derivatives as inhibitors of FMS-like tyrosine kinase 3 (FLT3) in FLT3-ITD-positive acute myeloid leukemia>, Product Details of C7H5N3O2, the main research area is aryl methanone preparation FLT3 tyrosine kinase inhibitor antitumor human; Acute myeloid leukemia; FLT3; FLT3 D835Y; FLT3-ITD; Tyrosine kinase inhibitor.

Mutants of the FLT3 receptor tyrosine kinase (RTK) with duplications in the juxtamembrane domain (FLT3-ITD) act as drivers of acute myeloid leukemia (AML). Potent tyrosine kinase inhibitors (TKi) of FLT3-ITD entered clin. trials and showed a promising, but transient success due to the occurrence of secondary drug-resistant AML clones. A further caveat of drugs targeting FLT3-ITD is the co-targeting of other RTKs which are required for normal hematopoiesis. This is observed quite frequently. Therefore, novel drugs are necessary to treat AML effectively and safely. Recently bis(1H-indol-2-yl)methanones were found to inhibit FLT3 and PDGFR kinases. In order to optimize these agents novel derivatives of these methanones with various substituents were synthesized. Methanone I and its carbamate derivative II inhibit FLT3-ITD at least as potently as the TKi AC220 (quizartinib). Models indicate corresponding interactions of I and quizartinib with FLT3. The activity of I is accompanied by a high selectivity for FLT3-ITD.

Jakkampudi, Satish’s team published research in Chemistry – A European Journal in 2019 | 145513-91-3

Chemistry – A European Journalpublished new progress about Acetalization catalysts, stereoselective. 145513-91-3 belongs to class indole-building-block, and the molecular formula is C9H15NO2, COA of Formula: C9H15NO2.

Jakkampudi, Satish; Parella, Ramarao; Arman, Hadi D.; Zhao, John C.-G. published the artcile< Diastereodivergent Synthesis of Hexahydro-6H-benzo[c]chromen-6-one Derivatives Catalyzed by Modularly Designed Organocatalysts>, COA of Formula: C9H15NO2, the main research area is oxo heptenal hydroxy nitrostyrene organocatalyst Michael acetalization oxidation; nitro oxoethyl hexahydrobenzochromenone enantioselective diastereoselective preparation; chromanone; diastereodivergent catalysis; domino reaction; enantioselectivity; organocatalysis; self-assembly.

The diastereodivergent synthesis of hexahydro-6H-benzo[c]chromen-6-one derivatives with good to high diastereoselectivities (up to 98:2 d.r.) and enantioselectivities (up to >99 % ee) was achieved by using a domino Michael/Michael/hemiacetalization reaction between trans-2-hydroxy-β-nitrostyrenes and trans-7-oxo-5-heptenals followed by oxidation With use of appropriate modularly designed organocatalysts that were self-assembled in-situ from amino acid derivatives and cinchona alkaloid derivatives two different diastereomers of the desired hexahydro-6H-benzo[c]chromen-6-ones were obtained from the same substrates.

Rassi, Somayeh’s team published research in Polyhedron in 2019-12-01 | 399-76-8

Polyhedronpublished new progress about Amides Role: BPN (Biosynthetic Preparation), BIOL (Biological Study), PREP (Preparation). 399-76-8 belongs to class indole-building-block, and the molecular formula is C9H6FNO2, HPLC of Formula: 399-76-8.

Rassi, Somayeh; Baharfar, Robabeh published the artcile< Synthesis of indole based amides using immobilized lipase on graphene oxide (GO@lipase) as a retrievable heterogeneous nano biocatalyst>, HPLC of Formula: 399-76-8, the main research area is lipase immobilized graphene oxide catalyst preparation thermal stability; indolyl carboxylic acid benzaldehyde alkyl isocyanide lipase Passerini reaction; phenyl alkylamino oxoethyl indolyl carboxylate preparation green chem.

A green and efficient one-pot procedure to achieved indole based amides using Passerini reaction involving indole-2-carboxylic acids, benzaldehydes and alkyl isocyanides in the presence of immobilized lipase on graphene oxide as a heterogeneous nano biocatalyst was developed. This method has the advantages of simple operation, mild reaction conditions and good to excellent yields. The features of this method are highlighted by using a retrievable nanostructure catalyst. This process was asserted to be efficient in the synthesis of indole derivatives

Tan, Zhi-Yu’s team published research in Green Chemistry in 2020 | 20870-77-3

Green Chemistrypublished new progress about Active methylene compounds Role: RCT (Reactant), RACT (Reactant or Reagent). 20870-77-3 belongs to class indole-building-block, and the molecular formula is C8H6ClNO, Related Products of 20870-77-3.

Tan, Zhi-Yu; Wu, Ke-Xin; Huang, Lu-Shan; Wu, Run-Shi; Du, Zheng-Yu; Xu, Da-Zhen published the artcile< Iron-catalyzed cross-dehydrogenative coupling of indolin-2-ones with active methylenes for direct carbon-carbon double bond formation>, Related Products of 20870-77-3, the main research area is indolinone active methylene iron cross dehydrogenative coupling green; alkene preparation.

The iron-catalyzed cross-dehydrogenative coupling (CDC) of C(sp3)-H/C(sp3)-H bonds to afford olefins by 4H elimination is described. This method employs air (mol. oxygen) as an ideal oxidant, and is performed under mild, ligand-free and base-free conditions. H2O is the only byproduct. Good tolerance of functional groups and high yields have also been achieved. Preliminary mechanistic investigations suggest that the present transformation involves a radical process.

Luo, Yang-Hui’s team published research in CrystEngComm in 2013 | 23077-43-2

CrystEngCommpublished new progress about Correlation analysis. 23077-43-2 belongs to class indole-building-block, and the molecular formula is C9H6FNO2, Reference of 23077-43-2.

Luo, Yang-Hui; Sun, Bai-Wang published the artcile< An investigation into the substituent effect of halogen atoms on the crystal structures of indole-3-carboxylic acid (ICA)>, Reference of 23077-43-2, the main research area is halogen atom crystal structure indolecarboxylic acid ICA.

A study into the substituent effect of halogen atoms (F, Cl, Br) on the crystal structure of indole-3-carboxylic acid (ICA) was prepared The study was done through the aspect of crystal structure, intermol. interactions and π···π stacking motifs with the assistance of IR spectra, elemental analyses, NMR spectra, DSC, thermogravimetric analyses (TGA) and hot stage microscopy (HSM) measurements. The different kinds of halogen atoms and the different substituted positions have a significant effect on the crystal structures, mol. π···π stacking motifs and the kinds of intermol. interactions. The authors further correlated the m.ps. of the ICAs with the H-H, O-H and X-H (X = F, Cl, Br) interactions, and found a pos. correlation between them.

CrystEngCommpublished new progress about Correlation analysis. 23077-43-2 belongs to class indole-building-block, and the molecular formula is C9H6FNO2, Reference of 23077-43-2.

DeRatt, Lindsey G’s team published research in Organic Letters in 2019-12-06 | 399-76-8

Organic Letterspublished new progress about Heterocyclic compounds, nitrogen Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 399-76-8 belongs to class indole-building-block, and the molecular formula is C9H6FNO2, Electric Literature of 399-76-8.

DeRatt, Lindsey G.; Lawson, Edward C.; Wang, Chao-Yuan; Kuduk, Scott D. published the artcile< Mild Intramolecular Ring Opening of Oxetanes>, Electric Literature of 399-76-8, the main research area is oxetane carboxamide nucleophile intramol ring opening.

Herein, an intramol. ring opening of oxetane carboxamides with mild nucleophiles, such as nitrogen heterocycles, is presented. The reaction proceeds under metal-free basic conditions which is highly unusual in ring opening reactions of oxetanes. Amide formation and oxetane ring opening/cyclization in a one-pot approach affords high levels of mol. complexity in a single step from simple, readily available substrates.

Seal, Jonathan T’s team published research in Journal of Medicinal Chemistry in 2020-09-10 | 93247-78-0

Journal of Medicinal Chemistrypublished new progress about Anti-inflammatory agents. 93247-78-0 belongs to class indole-building-block, and the molecular formula is C10H9NO2, Safety of Methyl 1H-indole-7-carboxylate.

Seal, Jonathan T.; Atkinson, Stephen J.; Aylott, Helen; Bamborough, Paul; Chung, Chun-wa; Copley, Royston C. B.; Gordon, Laurie; Grandi, Paola; Gray, James R. J.; Harrison, Lee A.; Hayhow, Thomas G.; Lindon, Matthew; Messenger, Cassie; Michon, Anne-Marie; Mitchell, Darren; Preston, Alex; Prinjha, Rab K.; Rioja, Inmaculada; Taylor, Simon; Wall, Ian D.; Watson, Robert J.; Woolven, James M.; Demont, Emmanuel H. published the artcile< The Optimization of a Novel, Weak Bromo and Extra Terminal Domain (BET) Bromodomain Fragment Ligand to a Potent and Selective Second Bromodomain (BD2) Inhibitor>, Safety of Methyl 1H-indole-7-carboxylate, the main research area is second bromodomain inhibitor.

The profound efficacy, yet associated toxicity of pan-BET inhibitors is well documented. The possibility of an ameliorated safety profile driven by significantly selective (>100-fold) inhibition of a subset of the eight bromodomains is enticing, but challenging given the close homol. Herein, we describe the X-ray crystal structure-directed optimization of a novel weak fragment ligand with a pan-second bromodomain (BD2) bias, to potent and highly BD2 selective inhibitors. A template hopping approach, enabled by our parallel research into an orthogonal template (15, GSK046, I), was the basis for the high selectivity observed This culminated in two tool mols., 20 (GSK620) and 56 (GSK549), which showed an anti-inflammatory phenotype in human whole blood, confirming their cellular target engagement. Excellent broad selectivity, developability, and in vivo oral pharmacokinetics characterize these tools, which we hope will be of broad utility to the field of epigenetics research.

Liu, Li’s team published research in ARKIVOC (Gainesville, FL, United States) in 2022 | 20870-77-3

ARKIVOC (Gainesville, FL, United States)published new progress about Dephosphorylation (reductive). 20870-77-3 belongs to class indole-building-block, and the molecular formula is C8H6ClNO, Application of C8H6ClNO.

Liu, Li; Li, Yue; Wang, Feng; Ning, Rui; Kong, Dulin; Wu, Mingshu published the artcile< A new synthetic approach to oxindoles (1,3-dihydro-2H-indol-2-ones) by reductive dephosphorylation with hydroiodic acid of 3-(diethylphosphoryloxy)-oxindoles, derived from isatins (1H-Indole-2,3-diones)>, Application of C8H6ClNO, the main research area is diethylphosphoryloxy oxindole preparation reductive dephosphorylation; oxindole preparation.

A novel method for the synthesis of 3-unsubstituted oxindoles by the reductive dephosphorylation of 3-(diethylphosphoryloxy)oxindoles with hydroiodic acid was developed. This synthetic strategy involved a two-step procedure including a phospha-Brook rearrangement of isatins with di-Et phosphite and a reductive dephosphorylation of the phosphorylated oxindoles.

Wang, Zhao-Yang’s team published research in Organic Chemistry Frontiers in 2021 | 4771-48-6

Organic Chemistry Frontierspublished 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.

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.