Category: chlorides-buliding-blocks

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Zheng, Xudong; Hou, Baolong; Wang, Rui; Wang, Yinyin; Wang, Cuiling; Chen, Huan; Liu, Li; Wang, Jilin; Ma, Xiumei; Liu, Jianli researched the compound: Piperidine-3-carboxylic acid( cas:498-95-3 ).COA of Formula: C6H11NO2.They published the article 《Synthesis of substituted tryptanthrin via aryl halides and amines as antitumor and anti-MRSA agents》 about this compound( cas:498-95-3 ) in Tetrahedron. Keywords: tryptanthrin derivative synthesis aryl halide amine antitumor anti MRSA. We’ll tell you more about this compound (cas:498-95-3).

The natural alkaloid, tryptanthrin (indolo[2,1-b]quinazoline-6,12-dione, I), and its analogs are found to exhibit potent antitumor and anti-MRSA activities. An efficient and convenient method has been developed for the synthesis of tryptanthrin D-ring derivatives through the reaction of substituted tryptanthrins and secondary amines in moderate to good yields. Some of the new compounds exhibited antitumor activities against the human tumor cell lines A549, HCT116 and MDA-MB-231, with mean IC50 values at low micromolar levels. In addition, some of the compounds showed excellent anti-MRSA activities and were more effective than vancomycin, with MIC values of 0.31-1.25 μg/mL for Mu50,RN4220, and Newman strains.

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Chloride – Wikipedia,
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SDS of cas: 1968-05-4. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 3,3′-Diindolylmethane, is researched, Molecular C17H14N2, CAS is 1968-05-4, about DIM mitigates the development of experimental autoimmune encephalomyelitis by maintaining the stability and suppressive function of regulatory T cells. Author is Yang, Sujuan; Tan, Lixi; Chen, Yingying; Liu, Aiqun; Hong, Mingfan; Peng, Zhongxing.

Recent studies have revealed that indoles, dietary ligands of the aryl hydrocarbon receptor (AhR), have immunomodulatory characteristics of balancing the differentiation of regulatory T cells (Tregs) and Th17 cells in multiple autoimmune diseases. In this study, we aimed to investigate the potency of the indole, 3,3′-diindolylmethane (DIM), on the stability and suppressive function of Tregs in exptl. autoimmune encephalomyelitis (EAE). Furthermore, we used the AhR antagonist CH223191 to verify that DIM exerts its effects on Tregs through the activation of AhR. We found that DIM treatment significantly alleviated the severity of EAE by maintaining the stability and suppressive function of Tregs instead of facilitating the differentiation of Tregs. Thus, these DIM-treated Tregs might indirectly inhibit the generation of Th17 cells and the production of proinflammatory cytokines. And we confirmed the critical role of AhR in the EAE model. Our study further investigated the mechanisms by which dietary indoles promote Treg activity in the EAE model. DIM may act as a novel therapeutic to restrain autoimmune inflammation in multiple sclerosis.

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Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 1968-05-4, is researched, SMILESS is C1(CC2=CNC3=C2C=CC=C3)=CNC4=C1C=CC=C4, Molecular C17H14N2Journal, Article, Research Support, Non-U.S. Gov’t, Toxicology and Applied Pharmacology called AKT inhibitor AZD5363 suppresses stemness and promotes anti-cancer activity of 3,3′-diindolylmethane in human breast cancer cells, Author is Zhu, Kaiyuan; Liu, Xu; Liu, Chunxiao; Xu, Yuting; Fu, Yingqiang; Dong, Wei; Yan, Yadong; Wang, Wenjing; Qian, Cheng, the main research direction is diindolylmethane AKT human breast cancer cell anticancer activity; AKT inhibitor; CyTOF; Stemness.Electric Literature of C17H14N2.

The 3,3′-diindolylmethane (DIM) is a dimer compound converted from Indoly-3-carbinol that had been studied as promising chemo-preventive agent against breast cancer. In this study, we observed that proportion of CD133+Nanog+ subpopulation in MCF-7 cells was significantly increased after DIM administration with up-regulated AKT activity by using CyTOF assay. SPADE anal. revealed this stem-like subpopulation exhibited apoptosis-resistance property against DIM treatment. By combining with AKT inhibitor AZD5363, DIM induced CD133 expression could be suppressed. In addition, a combination treatment of MCF-7 and MDA-MB-231 breast cancer cells with DIM and AZD5363 showed synergistic decreases in cell proliferation and induced apoptosis. Furthermore, results from imaging flow cytometry suggested that FoxO3a nuclear localization and PUMA expression could be improved by combination of AZD5363 with DIM. Taken together, the above observations suggested that the combination of AZD5363 with DIM could be developed as potential therapy for breast cancer.

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Chloride – Wikipedia,
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Hwang, Joon Young; Ji, A. Young; Lee, Sang Hyeok; Kang, Eun Joo published the article 《Redox-Selective Iron Catalysis for α-Amino C-H Bond Functionalization via Aerobic Oxidation》. Keywords: redox selective iron catalyst aerobic oxidation.They researched the compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione( cas:4144-22-3 ).Synthetic Route of C8H11NO2. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:4144-22-3) here.

Single-electron oxidation and α-deprotonation of tertiary anilines using Fe(phen)3(PF6)3 afford α-aminoalkyl radicals, which can be coupled with electrophilic partners to afford various tetrahydroquinolines. Mechanistically, the Fe(phen)n2+/3+ catalytic cycle is maintained by O2 or a TBHP oxidant, and the presence of the oxygen bound iron complex, Fe(III)-OO(H), was elucidated by ESR and electrospray ionization mass spectrometry. This redox-selective nonheme iron catalyst behaves similarly to bioinspired heme iron catalysts.

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Chloride – Wikipedia,
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Formula: C8H12I2Pt. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Diiodo(1,5-cyclooctadiene)platinum(II), is researched, Molecular C8H12I2Pt, CAS is 12266-72-7, about Utilizing Redox-Mediated Bergman Cyclization toward the Development of Dual-Action Metalloenediyne Therapeutics. Author is Lindahl, Sarah E.; Park, Hyunsoo; Pink, Maren; Zaleski, Jeffrey M..

Reaction of 2 equiv of 1,2-bis((diphenylphosphino)ethynyl)benzene (dppeb, 1) with Pt(cod)Cl2 followed by treatment with N2H4 yields the reduced Pt(0) metalloenediyne, I (Pt(dppeb)2, 2). This complex is stable to both air oxidation and metal-mediated Bergman cyclization under ambient conditions due to the nearly idealized tetrahedral geometry. Reaction of 2 with 1 equiv of I2 in the presence of excess 1,4-cyclohexadiene (1,4-CHD) radical trap rapidly and near-quant. generates the cis-Bergman-cyclized, diiodo product II (3, 31P: δ = 41 ppm, JPt-P = 3346 Hz) with concomitant loss of 1 equiv of uncyclized phosphine chelate (31P: δ = -33 ppm). In contrast, addition of 2 equiv of I2 in the absence of addnl. radical trap instantaneously forms a metastable Pt(dppeb)22+ intermediate species, 4, that was characterized by δ = 51 ppm in the 31P NMR (JPt-P = 3171 Hz) and νCC = 2169 cm-1 in the Raman profile, indicating that it is an uncyclized, bis-ligated complex. Over 24 h, 4 undergoes ligand exchange to form a neutral, square planar complex that spontaneously Bergman cyclizes at ambient temperature to give the crystalline product Pt(dppnap-I2)I2 (dppnap-I2 = (1,4-diiodonaphthalene-2,3-diyl)bis(diphenylphosphine)), 5, in 52% isolated yield. Computational anal. of the oxidation reaction proposes two plausible flattened tetrahedral structures for intermediate 4: one where the phosphine core has migrated to a trans-spanning chelate geometry, and a second, higher energy structure (3.3 kcal/mol) with two cis-chelating phosphine ligands (41° dihedral angle) via a restricted alkyne-terminal starting point. While the energies are disparate, the common theme in both structures is the elongated Pt-P bond lengths (>2.4 Å), indicating that nucleophilic ligand substitution by I- is on the reaction trajectory to the cyclized product 5. The efficiency of the redox-mediated Bergman cyclization reaction of this stable Pt(0) metalloenediyne prodrug and resulting cisplatin-like byproduct represents an intriguing new strategy for potential dual-threat metalloenediyne therapeutics.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: N,N’-(trans-Cyclohexane-1,2-diyl)dipicolinamide(SMILESS: O=C(N[C@H]1[C@H](NC(C2=NC=CC=C2)=O)CCCC1)C3=NC=CC=C3,cas:218290-24-5) is researched.Related Products of 16400-32-1. The article 《Ruthenium(II) carbonyl complexes containing pyridine carboxamide ligands and PPh3/AsPh3/Py coligands: Synthesis, spectral characterization, catalytic and antioxidant studies》 in relation to this compound, is published in Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy. Let’s take a look at the latest research on this compound (cas:218290-24-5).

New Ru(II) carbonyl complexes bearing pyridine, carboxamide and PPh3/triphenylarsine/pyridine were prepared by direct reaction of Ru(II) precursors with some pyridine carboxamide ligands, N,N-bis(2-pyridinecarboxamide)-1,2-ethane (H2L1), N,N-bis(2-pyridinecarboxamide)-1,2-benzene (H2L2) and N,N-bis(2-pyridinecarboxamide)-trans-1,2-cyclohexane (H2L3). The organic ligands offering two Namide and two Npyridine donor sites to the metal center. They were characterized by elemental analyses, FTIR, UV-Visible, NMR (1H, 13C and 31P) and ESI-MS techniques. Based on the above data, an octahedral structure was assigned for all the complexes. The catalytic efficiency of the complexes in transfer hydrogenation of ketones in the presence of iPrOH/KOH and N-alkylation of amine in the presence of tBuOK was examined Also, the antioxidant activity of the ligands and its Ru(II) complexes were determined by DPPH radical, nitric oxide radical, hydroxyl radical and H2O2 scavenging methods, which indicates that the Ru(II) complexes exhibit more effective antioxidant activity than the ligands alone.

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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Safety of 3,3′-Diindolylmethane. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 3,3′-Diindolylmethane, is researched, Molecular C17H14N2, CAS is 1968-05-4, about 3,3′-diindolylmethane induces gastric cancer cells death via STIM1 mediated store-operated calcium entry. Author is Ye, Yang; Li, Xue; Wang, Zhihua; Ye, Fen; Xu, Wenrong; Lu, Rongzhu; Shen, Haijun; Miao, Shuhan.

3,3′-Diindolylmethane (DIM), a natural phytochems. isolated from cruciferous vegetables, has been reported to inhibit human gastric cancer cells proliferation and induce cells apoptosis as well as autophagy, but its mechanisms are still unclear. Store-operated calcium entry (SOCE) is a main Ca2+ influx pathway in various of cancers, which is activated by the depletion of endoplasmic reticulum (ER) Ca2+ store. Stromal interaction mol. 1 (STIM1) is the necessary component of SOCE. In this study, we focus on to examine the regulatory mechanism of SOCE on DIM-induced death in gastric cancer. After treating the human BGC-823 and SGC-7901 gastric cancer cells with DIM, cellular proliferation was determined by MTT, apoptosis and autophagy were detected by flow cytometry or Hoechst 33342 staining. The expression levels of related proteins were evaluated by Western blotting. Free cytosolilc Ca2+ level was assessed by fluorescence monitoring under a laser scanning confocal microscope. The data have shown that DIM could significantly inhibit proliferation and induce apoptosis as well as autophagy in two gastric cancer cell lines. After DIM treatment, the STIM1-mediated SOCE was activated by upregulating STIM1 and decreasing ER Ca2+ level. Knockdown STIM1 with siRNA or pharmacol. inhibition of SOCE attenuated DIM induced apoptosis and autophagy by inhibiting p-AMPK mediated ER stress pathway. Our data highlighted that the potential of SOCE as a promising target for treating cancers. Developing effective and selective activators targeting STIM1-mediated SOCE pathway will facilitate better therapeutic sensitivity of phytochems. acting on SOCE in gastric cancer. Moreover, more research should be performed to validate the efficacy of combination chemotherapy of anti-cancer drugs targeting SOCE for clin. application.

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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Piperidine-3-carboxylic acid( cas:498-95-3 ) is researched.Recommanded Product: 498-95-3.Buran, Kerem; Reis, Rengin; Sipahi, Hande; Oenen Bayram, F. Esra published the article 《Piperazine and piperidine-substituted 7-hydroxy coumarins for the development of anti-inflammatory agents》 about this compound( cas:498-95-3 ) in Archiv der Pharmazie (Weinheim, Germany). Keywords: piperazine piperidine antiinflammatory agent; anti-inflammatory activity; coumarin; nitrite reduction; piperazine; piperidine. Let’s learn more about this compound (cas:498-95-3).

Coumarins (2H-1-benzopyran-2-one), derivatives that can be isolated from several plants, have been reported for their anticoagulant, antimicrobial, anti-inflammatory, or anticancer activity. Some of these structures are currently approved for the treatment of cardiovascular diseases, as antibiotics or as an anticancer drug. Given the great potential of this structure and the limited number of studies that focus on mols. derived from carbon 8 of the benzopyranone heterocycle, we synthesized in this project 38 coumarin derivatives by substituting carbon 8 of the benzopyran ring with some aromatic and aliphatically substituted piperidines and piperazines. As a few of these structures were already shown to exhibit some carbonic anhydrase (CA) inhibition and as CA enzymes are reported to be closely related to inflammation, the synthesized derivatives were evaluated for their anti-inflammatory activity in vitro. The results indicated that compounds 20 and 31 revealed promising anti-inflammatory activity, as they demonstrated better activity than the reference drugs.

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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione, is researched, Molecular C8H11NO2, CAS is 4144-22-3, about Cobalt-catalyzed 2-(1-methylhydrazinyl)pyridine-assisted cyclization of thiophene-2-carbohydrazides with maleimides: efficient synthesis of thiophene-fused pyridones, the main research direction is pyrrolothienopyridine preparation; carbohydrazide thiophene maleimide cycloaddition reaction cobalt catalyst.Recommanded Product: 4144-22-3.

A cobalt-catalyzed direct C-H/N-H functionalization of thiophene-2-carbohydrazides, e.g., I, with maleimides such as., 1-methyl-pyrrole-2,5-dione by utilizing 2-(1-methylhydrazinyl)pyridine (MHP) as an easily removable bidentate directing group has been developed. This formal [4+2] cycloaddition has been achieved for the first time, and it provides an alternative and versatile approach to construct thiophene-fused pyridones, e.g., II, using an inexpensive cobalt catalyst. The C-H/N-H activation cascade protocol showed a high efficiency and a broad substrate scope, and the products were obtained in good to excellent yields.

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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Gaodeng Xuexiao Huaxue Xuebao called Porous phosphate heterostructure materials as green catalysts in Prins condensation, Author is Wang, Xue-yan; Hua, Wei-ming; Yue, Ying-hong; Gao, Zi, which mentions a compound: 35836-73-8, SMILESS is CC1(C)[C@@]2([H])CC=C(CCO)[C@]1([H])C2, Molecular C11H18O, Related Products of 35836-73-8.

Various ion-exchanged porous phosphate heterostructure (PPH) materials were prepared and characterized by SEM, N2 adsorption and IR spectra of pyridine adsorption (Py-IR). Their catalytic behavior for the Prins condensation of β-pinene with paraformaldehyde was investigated. All catalysts exhibit good activities and selectivities towards nopol. Zn-ZrP is a more selective one in comparison to others, due to abundant Lewis acid sites and less Bronsted acid sites on the surface. The conversion of β-pinene and the yield of nopol on the catalyst reach 91% and 83% at 80°C. The catalyst is stable and reusable, and the product yield is only reduced by 12% after five runs. The reduction in activity is probably caused by deposition of coke on the active sites and partial collapse of porous structure.

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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics