Category: indole-building-block

Wang, Lei; Zhou, Ying; Zhang, Yan; Zhang, Guomei; Zhang, Caihong; He, Yujian; Dong, Chuan; Shuang, Shaomin published the artcile< A novel cell-penetrating Janus nanoprobe for ratiometric fluorescence detection of pH in living cells>, Safety of 2-(2-Aminoethyl)-3′,6′-bis(diethylamino)spiro[isoindoline-1,9′-xanthen]-3-one, the main research area is cell penetrating Janus nanoprobe ratiometry fluorescence pH cell imaging; Intracelluar pH; Janus nanoprobe; Ratiometric detection.

pH regulates the function of many organelles and plays a pivotal role in requiring multitud cellular behaviors. Compared with single fluorescent probes, ratio fluorescent probes have higher sensitivity and immunity to interference. Herein, a novel Janus ratio nanoprobe was developed for intracellular pH detection. Modified rhodamine B probe and fluorescein isothiocyanate (FITC) were individually encapsulated in the independent hemispheres of Janus microparticles fabricated via Pickering emulsion. Moreover, it exhibits a satasified ratiometric detection of pH compared to the previous core-shell structure and organic small mol. probe. Accordingly, the Janus nanoprobe possesses many important features as an attractive sensor, including high anti-jamming capability, excellent stability, good reversibility and low cytotoxicity. Variations of the two fluorescence intensities (Fgreen/Fred) resulted in a ratiometric pH fluorescent sensor, which can respond to wide range of pH values from 3 to 8. To be more specific, with a single excitation wavelength of 488 nm, there are dual emission bands centered at 538 nm and 590 nm. Also the Janus nanoprobe displays a excellent linear relation in the physiol. relevant pH range of 4.0-6.0. Consequently, detecting of pH and imaging was successfully achieved in living cells, which provides a simple and reliable method for detecting intracelluar pH and other similar substances.

Talanta published new progress about Acid-base indicators. 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

Cengiz, Nergiz published the artcile< Fabrication of Multifunctional Stimuli-Responsive Hydrogels Susceptible to both pH and Metal Cation for Visual Detections>, Quality Control of 950846-89-6, 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, Quality Control of 950846-89-6.

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>, SDS of cas: 93247-78-0, 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, SDS of cas: 93247-78-0.

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>, Recommanded Product: Methyl 1H-indole-7-carboxylate, 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, 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

Wu, Guowei; Wang, Zhengyi; Zhang, Weixia; Chen, Wei; Jin, Xinxin; Lu, Hongfei published the artcile< A novel rhodamine B and purine derivative-based fluorescent chemosensor for detection of palladium (II) ion>, SDS of cas: 950846-89-6, the main research area is palladium rhodamine B purine derivative complex formation fluorescent probe; DFT palladium rhodamine B purine derivative; crystal structure rhodamine B purine derivative.

A new rhodamine B and purine-based colorimetric and fluorescent sensor RBTP for detection of Pd (II) cation was prepared and structurally characterized. Sensor RBTP shows high sensitivity and selectivity to Pd2+ in EtOH/H2O solution (3/2, volume/volume, pH 7.4, HEPES buffer, 0.5 mM). And sensor RBTP not only exhibited a naked-eye color change from colorless to pink, but also displayed “”turn-on”” fluorescent sensing for recognition and detection of Pd2+. The fluorescence titration anal. of sensor RBTP to Pd2+ exhibits a low the limit of detection (49.5 nM). A great linear relationship was found between the concentration of Pd2+ from 0 to 40 μM and the fluorescence intensity of RBTP. The crystal structure of RBTP was supported by X-ray diffraction. Meanwhile, the proposed sensing mechanism of RBTP binding to Pd2+ was supported by Job’s plot, MS spectra study and d. functional theory (DFT) study. Moreover, sensor RBTP could be made as test paper to quant. detection for Pd (II) cation in water.

Inorganic Chemistry Communications published new progress about Crystal structure. 950846-89-6 belongs to class indole-building-block, and the molecular formula is C30H36N4O2, SDS of cas: 950846-89-6.

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, Zhen; Zhang, Min; Wang, Jin; Ji, Haitao published the artcile< Optimization of Peptidomimetics as Selective Inhibitors for the β-Catenin/T-Cell Factor Protein-Protein Interaction>, Safety of 5-Fluoroindole-2-carboxylic acid, the main research area is peptidomimetics protein protein interaction inhibitor T Cell Factor.

The β-catenin/T-cell factor (Tcf) protein-protein interaction (PPI) plays a critical role in the β-catenin signaling pathway which is hyperactivated in many cancers and fibroses. Based on compound 1, which was designed to target the Tcf4 G13ANDE17 binding site of β-catenin, extensive structure-activity relationship studies have been conducted. As a result, compounds 53 and 57 were found to disrupt the β-catenin/Tcf PPI with the Ki values of 0.64 and 0.44 μM, resp., and exhibit good selectivity for β-catenin/Tcf over β-catenin/E-cadherin and β-catenin/adenomatous polyposis coli (APC) PPIs. The 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) cell viability assays revealed that 56, the Et ester of 53, was more potent than 53 in inhibiting viability of most of the Wnt/β-catenin hyperactive cancer cells. Further cell-based studies indicated that 56 disrupted the β-catenin/Tcf PPI without affecting the β-catenin/E-cadherin and β-catenin/APC PPIs, suppressed transactivation of Wnt/β-catenin signaling in dose-dependent manners, and inhibited migration and invasiveness of Wnt/β-catenin-dependent cancer cells.

Journal of Medicinal Chemistry published new progress about Cell migration (inhibited migration and invasiveness of Wnt/β-catenin-dependent cancer cells). 399-76-8 belongs to class indole-building-block, and the molecular formula is C9H6FNO2, Safety of 5-Fluoroindole-2-carboxylic acid.

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

Liu, Y.; Zhang, Z. Y.; Ji, Y. Z.; Li, H. J.; Wu, Y. C. published the artcile< Efficient Synthesis of 3-(Arenesulfinyl)indoles in Water>, Electric Literature of 93247-78-0, the main research area is arenesulfinylindole preparation green chem; indole arylsulfinamide sulfinylation water.

The first example of the sulfinylation of indoles with arylsulfinamides in water in the presence of trifluoroacetic acid as a promoter is described. The reaction occurs smoothly at room temperature under environmentally benign conditions without any catalyst, additive, ligand, or organic solvent. The developed sulfoxide synthetic protocol is attractive due to the use of water as the solvent and provides a novel and efficient route to a wide range of functionalized diaryl sulfoxides.

Russian Journal of Organic Chemistry published new progress about Aromatic compounds, sulfoxides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 93247-78-0 belongs to class indole-building-block, and the molecular formula is C10H9NO2, Electric Literature of 93247-78-0.

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

Huang, Lu-Shan; Han, Dong-Yang; Xu, Da-Zhen published the artcile< Iron-Catalyzed Cross-Dehydrogenative Coupling of Oxindoles with Thiols/Selenols for Direct C(sp3)-S/Se Bond Formation>, Quality Control of 20870-77-3, the main research area is oxindole thiol selenol iron catalyst cross dehydrogenative coupling green.

The C-X (S/Se) bonds are common and ubiquitous in natural products and pharmaceuticals. Here, we report an iron-catalyzed cross-dehydrogenative coupling (CDC) reaction for the direct synthesis of C(sp3)-X (S/Se) bonds from oxindoles, phenylacetamides, pyrazolones, phenylacetonitriles and Et cyanoacetate with thiols and selenols. All the reactions were performed under simple and mild conditions, and air (mol. oxygen) was employed as an ideal green oxidant, thus promising broad application in chem. industry and modification of bioactive mols.

Advanced Synthesis & Catalysis published new progress about Bond formation (C-Se). 20870-77-3 belongs to class indole-building-block, and the molecular formula is C8H6ClNO, Quality Control 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

Wang, Qinghui; Arnst, Kinsie E.; Wang, Yuxi; Kumar, Gyanendra; Ma, Dejian; Chen, Hao; Wu, Zhongzhi; Yang, Jinliang; White, Stephen W.; Miller, Duane D.; Li, Wei published the artcile< Structural Modification of the 3,4,5-Trimethoxyphenyl Moiety in the Tubulin Inhibitor VERU-111 Leads to Improved Antiproliferative Activities>, Related Products of 4771-48-6, the main research area is trimethoxyphenyl VERU111 synthesis tubulin antitumor.

Colchicine binding site inhibitors (CBSIs) hold great potential in developing new generations of antimitotic drugs. Unlike existing tubulin inhibitors such as paclitaxel, they are generally much less susceptible to resistance caused by the overexpression of drug efflux pumps. The 3,4,5-trimethoxyphenyl (TMP) moiety is a critical component present in many CBSIs, playing an important role in maintaining suitable mol. conformations of CBSIs and contributing to their high binding affinities to tubulin. Previously reported modifications to the TMP moiety in a variety of scaffolds of CBSIs have usually resulted in reduced antiproliferative potency. We previously reported a potent CBSI, VERU-111, that also contains the TMP moiety. Herein, we report the discovery of a VERU-111 analog I that is significantly more potent than VERU-111. The X-ray crystal structure of I in complex with tubulin confirms its direct binding to the colchicine site. In addition, I exhibited a strong inhibitory effect on tumor growth in vivo.

Journal of Medicinal Chemistry published new progress about Antitumor agents. 4771-48-6 belongs to class indole-building-block, and the molecular formula is C10H9NO, Related Products of 4771-48-6.

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

Liu, Yuanyuan; Li, Yi; Zong, Linghui; Zhang, Jingyi published the artcile< Comparison of Two Rhodamine-polyamine Polystyrene Solid-phase Fluorescence Sensors for Hg(II) Detection Based on Theoretical Calculation>, Reference of 950846-89-6, the main research area is rhodamine polyamine polystyrene fluorescence sensor mercury detection.

Two novel rhodamine-based polystyrene solid-phase fluorescence sensors PS-PA-I and PS-PA-II with different lengths of polyamines were synthesized for Hg(II) determination The detection mechanism involving the Hg(II) chelation-induced spirocycle open of rhodamine was proposed with the aid of theor. calculation The stronger N-Hg bond and the longer polyamine chain in PS-PA-II led to a better selectivity, much higher and more quickly fluorescence response to Hg(II).

Chemical Research in Chinese Universities published new progress about Fluorescence. 950846-89-6 belongs to class indole-building-block, and the molecular formula is C30H36N4O2, Reference of 950846-89-6.

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