Month: October 2022

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.

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.

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

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

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.

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

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.

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.

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; 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.

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.

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

Tian, Xing-Ling; Feng, Chao; Zhao, Xu-Hui team published the artcile< Corrosion Monitoring Effect of Rhodamine-Ethylenediamine on Copper Relics under a Protective Coating>, the main research area is rhodamine ethylenediamine copper relics protective coating corrosion. COA of Formula: C30H36N4O2.

Fluorescence spectroscopy is a common technique used to monitor early metallic corrosion. The fluorescence response characteristics of rhodamine-ethylenediamine toward Cu2+ have been studied using fluorescence and IR spectroscopy. Fluorescence microscopy and electrochem. impedance spectroscopy were used to study the monitoring effect of rhodamine-ethylenediamine on the corrosion of copper relics protected by an epoxy coating. The results showed a strong fluorescent response and selectivity toward Cu2+ that existed using rhodamine-ethylenediamine. Early metallic corrosion of copper relics can be effectively monitored upon adding 0.8 wt% rhodamine-ethylenediamine to an epoxy coating. When the soaking time was increased, the fluorescence intensity of the fluorescent area on the coating became stronger. In addition, the area of the luminous coating reached ∼0.06 mm2 and the area of corrosion under the protective coating was ∼0.008 mm2, which was about 1/10 of the fluorescence area observed on the coating.

ACS Omegapublished new progress about Coating process; Complexation; Corrosion (relics); Electric impedance; Fluorescence spectroscopy; Fluorescent coating materials; Surface structure. 950846-89-6 belongs to class indole-building-block and the molecular formula is C30H36N4O2, Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study.

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