indole-building-block | - Page 206 of 1434

Yang, Yunhui’s team published research in Chemistry – A European Journal in 2019 | CAS: 41910-64-9

Chemistry – A European Journal published new progress about C-H bond activation. 41910-64-9 belongs to class indole-building-block, name is 4-Chloroindoline, and the molecular formula is C8H8ClN, Computed Properties of 41910-64-9.

Yang, Yunhui published the artcileRe-Catalyzed Annulations of Weakly Coordinating N-Carbamoyl Indoles/Indolines with Alkynes via C-H/C-N Bond Cleavage, Computed Properties of 41910-64-9, the main research area is pyrroloindolone preparation; alkyne carbamoyl indole annulation rhenium catalyst; pyrroloquinolinone preparation; carbamoyl indolines alkyne annulation rhenium catalyst; C−H activation; annulations; indoles; indolines; rhenium catalysis.

A rhenium-catalyzed [3+2] annulations of N-carbamoyl indoles with alkynes via C-H/C-N bond cleavage, provided rapid access to fused-ring pyrroloindolone derivs I [R1 = H, 6-F, 7-Br, etc.; R2 = R3 = Ph, 4-MeC6H4, 1-naphthyl, etc.]. For the first time, the weakly coordinating O-directing group was successfully employed in rhenium-catalyzed C-H activation reactions, enabled by the unique catalytic ratio of Re2(CO)10, Me2Zn and ZnCl2. Mechanistic studies revealed that aminozinc species played an important role in the reaction. Based on the mechanistic understanding, a more powerful catalytic ratio of Re2(CO)10, [MeZnNPh2]2 and Zn(OTf)2 was devised and applied successfully in the [4+2] annulations of indolines and alkynes affording pyrroloquinolinone derivs II.

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

Zhang, Wen-Qian’s team published research in Organic Letters in 2022-09-16 | CAS: 57663-18-0

Organic Letters published new progress about Benzoyl chlorides Role: RCT (Reactant), RACT (Reactant or Reagent). 57663-18-0 belongs to class indole-building-block, name is Methyl 2-methyl-1H-indole-5-carboxylate, and the molecular formula is C11H11NO2, Product Details of C11H11NO2.

Zhang, Wen-Qian published the artcileDearomative Arylcyanation of Indoles via C-CN Bond Activation Enabled by Ni/Lewis Acid Cooperative Catalysis, Product Details of C11H11NO2, the main research area is isoindoloindole carbonitrile preparation stereoselective nickel Lewis acid cooperative catalysis; indolecarbonyl benzonitrile intramol dearomative arylcyanation.

A nickel/Lewis acid cooperatively catalyzed intramol. dearomative arylcyanation of indoles is presented. The reaction proceeds through a C-CN bond activation, dearomatization, and benzylic cyanation sequence, affording 3-cyano fused indolinyl heterocycles in good to excellent yields and excellent diastereoselectivity. The asym. version of the reaction can be established in moderate enantioselectivity by using a chiral ligand.

Varlet, Thomas’s team published research in Journal of the American Chemical Society in 2021-08-04 | CAS: 1009-27-4

Journal of the American Chemical Society published new progress about [4+2] Cycloaddition reaction. 1009-27-4 belongs to class indole-building-block, name is 2-Ethoxy-1H-indole, and the molecular formula is C10H11NO, Recommanded Product: 2-Ethoxy-1H-indole.

Varlet, Thomas published the artcileEnantioselective and Diastereodivergent Synthesis of Spiroindolenines via Chiral Phosphoric Acid-Catalyzed Cycloaddition, Recommanded Product: 2-Ethoxy-1H-indole, the main research area is spiroindolenine preparation diastereoselective enantioselective; indolylmethanol dienecarbamate cycloaddition chiral phosphoric acid catalyst.

A diastereodivergent and enantioselective synthesis of chiral spirocyclohexyl-indolenines with four contiguous stereogenic centers is achieved by a chiral phosphoric acid-catalyzed cycloaddition of 2-susbtituted 3-indolylmethanols with 1,3-dienecarbamates. Modular access to two different diastereoisomers with high enantioselectivities was obtained by careful choice of reaction conditions. Their functional group manipulation provides an efficient access to enantioenriched spirocyclohexyl-indolines and -oxindoles. The origins of this stereocontrol have been identified using DFT calculations, which reveal an unexpected mechanism compared to previous work dealing with enecarbamates.

Shultz, Michael D.’s team published research in Journal of Medicinal Chemistry in 2011-07-14 | CAS: 5654-92-2

Journal of Medicinal Chemistry published new progress about Aldehydes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 5654-92-2 belongs to class indole-building-block, name is N,N-Dimethyl-1-(1H-pyrrolo[2,3-b]pyridin-3-yl)methanamine, and the molecular formula is C10H13N3, Quality Control of 5654-92-2.

Shultz, Michael D. published the artcileOptimization of the in vitro cardiac safety of hydroxamate-based Histone deacetylase inhibitors, Quality Control of 5654-92-2, the main research area is hydroxamate derivative preparation SAR HDAC inhibotor anticancer.

Histone deacetylase (HDAC) inhibitors have shown promise in treating various forms of cancer. However, many HDAC inhibitors from diverse structural classes have been associated with QT prolongation in humans. Inhibition of the human ether a-go-go related gene (hERG) channel has been associated with QT prolongation and fatal arrhythmias. To determine if the observed cardiac effects of HDAC inhibitors in humans is due to hERG blockade, a highly potent HDAC inhibitor devoid of hERG activity was required. Starting with dacinostat (LAQ824), a highly potent HDAC inhibitor, we explored the SAR to determine the pharmacophores required for HDAC and hERG inhibition. We disclose here the results of these efforts where a high degree of pharmacophore homol. between these two targets was discovered. This similarity prevented traditional strategies for mitigating hERG binding/modulation from being successful and novel approaches for reducing hERG inhibition were required. Using a hERG homol. model, two compounds, I and II, were discovered to be highly efficacious with weak affinity for the hERG and other ion channels.

Traboni, Serena et al. published their research in Advanced Synthesis & Catalysis in 2015 |CAS: 130539-43-4

The Article related to condensation transacetalation glycosylation catalyst glycoside preparation, Carbohydrates: Glycosides and other aspects.SDS of cas: 130539-43-4

Traboni, Serena; Bedini, Emiliano; Giordano, Maddalena; Iadonisi, Alfonso published an article in 2015, the title of the article was Three Solvent-Free Catalytic Approaches to the Acetal Functionalization of Carbohydrates and Their Applicability to One-Pot Generation of Orthogonally Protected Building Blocks.SDS of cas: 130539-43-4 And the article contains the following content:

Three alternative protocols were developed to carry out the selective installation of acetal groups on carbohydrates and polyols under mildly acidic, solvent-free conditions. One protocol is based on a diol/aldehyde condensation at room temperature, with an acetolysis process serving for the activation of the carbonyl component. A second approach is based on an orthoester-mediated activation of the carbonyl component at high temperature The third protocol is instead entailing a transacetalation mechanism. Combination of these methods allows a wide set of acetal-protected building blocks to be accessed in short times under very simple exptl. conditions working under air. The scope of the latter two approaches was also extended to unusual one-pot synthetic sequences leading to concomitant Fischer glycosidation/acetal protection of reducing sugars. The experimental process involved the reaction of Ethyl 2-deoxy-2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)-1-thio-beta-D-glucopyranoside(cas: 130539-43-4).SDS of cas: 130539-43-4

The Article related to condensation transacetalation glycosylation catalyst glycoside preparation, Carbohydrates: Glycosides and other aspects.SDS of cas: 130539-43-4

Sarkar, Kakali et al. published their research in Journal of Carbohydrate Chemistry in 2003 |CAS: 130539-43-4

The Article related to fucopyranosyl glucopyranosyl rhamnopyranoside trisaccharide synthesis repeating unit escherichia coli, trisaccharide repeating unit synthesis antigen escherichia coli, Carbohydrates: Amines and other aspects.Computed Properties of 130539-43-4

On March 31, 2003, Sarkar, Kakali; Mukherjee, Indrani; Roy, Nirmolendu published an article.Computed Properties of 130539-43-4 The title of the article was Synthesis of the trisaccharide repeating unit of the O-antigen related to the enterohemorrhagic Escherichia coli type O26:H. And the article contained the following:

L-Fucose was converted to the 2-azido-2-deoxy-L-fucose derivative, which together with the monosaccharide synthons prepared from L-rhamnose and D-glucosamine hydrochloride were utilized for the synthesis of the p-ethoxyphenyl glycoside of the trisaccharide repeating unit of the antigen from enterohemorrhagic Escherichia coli type O26:H. The experimental process involved the reaction of Ethyl 2-deoxy-2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)-1-thio-beta-D-glucopyranoside(cas: 130539-43-4).Computed Properties of 130539-43-4

Cirla, Alessandra et al. published their research in Tetrahedron in 2004 |CAS: 130539-43-4

The Article related to cyclopentane diol calicheamicin analog preparation anticancer, neocarzinostatin chromophore preparation anticancer, glucosamine cyclopentane diol preparation, Carbohydrates: Amines and other aspects.HPLC of Formula: 130539-43-4

On April 26, 2004, Cirla, Alessandra; McHale, Angela R.; Mann, John published an article.HPLC of Formula: 130539-43-4 The title of the article was Synthesis of analogues of calicheamicin and neocarzinostatin chromophore. And the article contained the following:

The work presents a synthetic route to the CD ring of calicheamicin and in the case of neocarzinostatin an approach to a functionalized cyclopentane-1,3-diol containing the naturally occurring naphthoate and a glucosamine motif. In the case of the NCS derivative some biol. activity (cytotoxicity) was observed The experimental process involved the reaction of Ethyl 2-deoxy-2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)-1-thio-beta-D-glucopyranoside(cas: 130539-43-4).HPLC of Formula: 130539-43-4

Kajihara, Yasuhiro et al. published their research in Carbohydrate Research in 1998 |CAS: 130539-43-4

The Article related to acetamidodeoxyglucopyranose substrate specificity galactosyltransferase, galactosyltransferase glycosyl acceptor recognition, Carbohydrates: Amines and other aspects.Recommanded Product: 130539-43-4

On January 31, 1998, Kajihara, Yasuhiro; Kodama, Hisashi; Endo, Tsuyoshi; Hashimoto, Hironobu published an article.Recommanded Product: 130539-43-4 The title of the article was Novel features of acceptor recognition by Î²-(1â?)-galactosyltransferase. And the article contained the following:

In order to understand how Î²-(1â?)-galactosyltransferase recognizes its glycosyl acceptor, substrate specificities were investigated using synthetic 2-acetamido-2-deoxy-D-glucopyranose (N-acetylglucosamine) derivatives in which the 1-, 2-, 3-, 4-, and 6-positions were systematically substituted. The hydroxyl groups at the 3-, 4-, and 6-positions were substituted by fluoride, thiol or hydrogen. For modification of the 2- position, the acetamido group was converted to ethylamino-, N-methylacetamido- and acetyloxy groups. For the anomeric position, several sugar residues were introduced as the aglycon of N-acetylglucosaminide. Galactose transfer assay using synthetic N-acetylglucosamine derivatives indicated that both the acetamido group and the 4-hydroxyl group were essential for binding of N-acetylglucosamine toward the Î²-(1â?)-galactosyltransferase. The assay also showed that the N-acetylglucosamine having a large substitution at the 6-position can be recognized as an acceptor. It is suggested that in this case the bulky substituent is positioned away from the catalytic site or out of enzyme. Since the 2-acetamido and the 4-hydroxyl group are essential for recognition, the side composed of the 2, 3, and 4-positions may face the acceptor-binding site. The experimental process involved the reaction of Ethyl 2-deoxy-2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)-1-thio-beta-D-glucopyranoside(cas: 130539-43-4).Recommanded Product: 130539-43-4

Misra, A. K. et al. published their research in Bioorganic & Medicinal Chemistry Letters in 2001 |CAS: 130539-43-4

The Article related to mucin glycan aminodeoxy oligosaccharide preparation galactosidase, lactosaminyl oligosaccharide preparation glycosylation, Carbohydrates: Amines and other aspects.COA of Formula: C16H19NO6S

On October 22, 2001, Misra, A. K.; Fukuda, M.; Hindsgaul, O. published an article.COA of Formula: C16H19NO6S The title of the article was Efficient synthesis of lactosaminylated core-2 O-glycans. And the article contained the following:

A series of lactosaminylated oligosaccharides found in mucin type O-glycans was synthesized using a generalized block strategy. The synthesis involved the addition of a protected lactosamine donor to a partially protected T-disaccharide derivative The nonreducing galactose residues of the deblocked oligosaccharide products could be removed by β-galactosidase from jack bean to produce the corresponding GlcNAc terminated compounds A series of tri- to hexasaccharides was thus efficiently produced. The experimental process involved the reaction of Ethyl 2-deoxy-2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)-1-thio-beta-D-glucopyranoside(cas: 130539-43-4).COA of Formula: C16H19NO6S

Seeberger, Peter H. et al. published their research in Synlett in 2003 |CAS: 130539-43-4

The Article related to deoxystreptamine neomycin analog preparation rna binding, aminoglycoside oligosaccharide analog preparation rna binding, Carbohydrates: Amines and other aspects.Application In Synthesis of Ethyl 2-deoxy-2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)-1-thio-beta-D-glucopyranoside

Seeberger, Peter H.; Baumann, Michael; Zhang, Guangtao; Kanemitsu, Takuya; Swayze, Eric E.; Hofstadler, Steven A.; Griffey, Richard H. published an article in 2003, the title of the article was Synthesis of neomycin analogs to investigate aminoglycoside-RNA interactions.Application In Synthesis of Ethyl 2-deoxy-2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)-1-thio-beta-D-glucopyranoside And the article contains the following content:

A series of novel aminoglycoside oligosaccharide analogs containing a 2,5-dideoxystreptamine core scaffold was prepared to study aminoglycoside binding to the small subunit of 16S rRNA. A set of monosaccharide building blocks carrying amino groups in different positions and conformations around the pyranose ring was utilized in the assembly of oligosaccharides. These aminoglycoside analogs were analyzed for their RNA-binding capacity using a high throughput mass spectroscopy assay. The experimental process involved the reaction of Ethyl 2-deoxy-2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)-1-thio-beta-D-glucopyranoside(cas: 130539-43-4).Application In Synthesis of Ethyl 2-deoxy-2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)-1-thio-beta-D-glucopyranoside