Tag: M.W:100-200

Formula: C4H7BrO2. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Methyl 3-bromopropanoate, is researched, Molecular C4H7BrO2, CAS is 3395-91-3, about Understanding the Effect of the Electron Spin Relaxation on the Relaxivities of Mn(II) Complexes with Triazacyclononane Derivatives. Author is Uzal-Varela, Rocio; Valencia, Laura; Lalli, Daniela; Maneiro, Marcelino; Esteban-Gomez, David; Platas-Iglesias, Carlos; Botta, Mauro; Rodriguez-Rodriguez, Aurora.

Investigating the relaxation of water 1H nuclei induced by paramagnetic Mn(II) complexes is important to understand the mechanisms that control the efficiency of contrast agents used in diagnostic magnetic resonance imaging (MRI). Herein, a series of potentially hexadentate triazacyclononane (TACN) derivatives containing different pendant arms were designed to explore the relaxation of the electron spin in the corresponding Mn(II) complexes using a combination of 1H NMR relaxometry and theor. calculations These ligands include 1,4,7-triazacyclononane-1,4,7-triacetic acid (H3NOTA) and three derivatives in which an acetate group is replaced by sulfonamide (H3NO2ASAm), amide (H2NO2AM) or pyridyl (H2NO2APy) pendants, resp. The analog of H3NOTA containing three propionate pendant arms (H3NOTPrA) was also investigated. The x-ray structure of the derivative containing two acetate groups and a sulfonamide pendant arm [Mn(NO2ASAm)]- evidenced six-coordination of the ligand to the metal ion, with the coordination polyhedron being close to a trigonal prism. The relaxivities of all complexes at 20 MHz and 25° (1.1-1.3 mM-1 s-1) are typical of systems that lack water mols. coordinated to the metal ion. The nuclear magnetic relaxation profiles evidence significant differences in the relaxivities of the complexes at low fields (<1 MHz), which are associated with different spin relaxation rates. The zero field splitting (ZFS) parameters calculated using DFT and CASSCF methods show that electronic relaxation is relatively insensitive to the nature of the donor atoms. However, the twist angle of the two tripodal faces that delineate the coordination polyhedron, defined by the N atoms of the TACN unit (lower face) and the donor atoms of the pendant arms (upper face), has an important effect in the ZFS parameters. A twist angle close to the ideal value for an octahedral coordination (60°), such as that in [Mn(NOTPrA)]-, leads to a small ZFS energy, whereas this value increases as the coordination polyhedron approaches to a trigonal prism. Compounds in my other articles are similar to this one(Methyl 3-bromopropanoate)Formula: C4H7BrO2, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Recommanded Product: 3395-91-3. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Methyl 3-bromopropanoate, is researched, Molecular C4H7BrO2, CAS is 3395-91-3, about A nano-cocktail of an NIR-II emissive fluorophore and organoplatinum(II) metallacycle for efficient cancer imaging and therapy. Author is Ding, Feng; Chen, Zhao; Kim, Won Young; Sharma, Amit; Li, Chonglu; Ouyang, Qingying; Zhu, Hua; Yang, Guangfu; Sun, Yao; Kim, Jong Seung.

The scarcity of efficient imaging technologies for precise cancer treatment greatly drives the development of new nanotheranostic based platforms that enable both diagnostic and therapeutic functions, together in a single formulation. Owing to the complicated physiol. microenvironment, nanosystems designed with the possibility of noninvasive real-time monitoring of therapeutic progression in the second near-IR channel (NIR-II, 1000-1700 nm) could substantially improve the current cancer therapies. Herein, we design a novel NIR-II theranostic nanoprobe, PSY (size ∼110 nm), by incorporating organoplatinum(II) metallacycles P1 and an organic NIR-II mol. dye, SY1030, into the FDA-approved polymer Pluronic F127. Preliminary in vitro and in vivo studies suggest that PSY is capable of being internalized into glioma U87MG-cells with no significant internalization in non-cancerous tissues. In addition, it shows excellent photostability and minimal background for real-time monitoring the process of therapy in the NIR-II region. Furthermore, in U87MG xenografts and orthotopic breast tumor, PSY demonstrat significantly improved anticancer efficacy compared to a clin. approved Pt(II)-based anticancer drug, cisplatin. The engineered nano-cocktail PSY offers a simple strategy for delivering the organoplatinum(II) macrocycle P1 and NIR-II fluorophore SY1030 as a cocktail of diagnostic and therapeutic functions and highlights its promising capacity for future cancer treatment.

Compounds in my other articles are similar to this one(Methyl 3-bromopropanoate)Recommanded Product: 3395-91-3, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Synthetic Route of C4H7BrO2. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Methyl 3-bromopropanoate, is researched, Molecular C4H7BrO2, CAS is 3395-91-3, about Design, synthesis and biological evaluation of pyridyl substituted benzoxazepinones as potent and selective inhibitors of aldosterone synthase. Author is Zhu, Haichao; Liu, Meihua; Li, Haiyan; Guan, Ting; Zhang, Qi; Chen, Yang; Liu, Yingxiang; Hartmann, Rolf R.; Yin, Lina; Hu, Qingzhong.

Exorbitant aldosterone is closely associated with various severe diseases, including congestive heart failure and chronic kidney disease. As aldosterone synthase is the pivotal enzyme in aldosterone biosynthesis, its inhibition constitutes a promising treatment for these diseases. Via a structure-based approach, a series of pyridyl substituted 3,4-dihydrobenzo[f][1,4]oxazepin-5(2H)-ones I (R = dimethylaminyl, F, pyrrolidin-1-yl, etc.; R1 = 4-methylpyridin-3-yl, 5-(trifluoromethyl)pyridin-3-yl, 5-fluoropyridin-3-yl, etc.) were designed as inhibitors of aldosterone synthase. Six compounds I (R = dimethylaminyl, R1 = 5-methylpyridin-3-yl; R1 = R = dimethylaminyl, 4-methylpyridin-3-yl; R = dimethylaminyl, R1 = 5-methoxypyridin-3-yl; R1 = 4-methylpyridin-3-yl, R = morpholin-4-yl; R1 = 4-methylpyridin-3-yl, R = piperazin-1-yl (II); R1 = 4-methylpyridin-3-yl, R = 4-methylpiperazin-1-yl) distinguished themselves with potent inhibition (IC50 <100 nmol/L) and high selectivity over homogenous 11β-hydroxylase. As the most promising compound, (II) exhibited an IC50 of 12 nmol/L and an excellent selectivity factor (SF) of 157, which are both superior to those of the reference fadrazole (IC50 = 21 nmol/L, SF = 7). Importantly, (II) showed no inhibition against steroidogenic CYP17, CYP19 and a panel of hepatic CYP enzymes indicating an outstanding safety profile. As it manifested satisfactory pharmacokinetic properties in rats, compound (II) was considered as a drug candidate for further development. Compounds in my other articles are similar to this one(Methyl 3-bromopropanoate)Synthetic Route of C4H7BrO2, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Computed Properties of C4H7BrO2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Methyl 3-bromopropanoate, is researched, Molecular C4H7BrO2, CAS is 3395-91-3, about In vitro evaluation of antiproliferative properties of novel organotin(IV) carboxylate compounds with propanoic acid derivatives on a panel of human cancer cell lines. Author is Pantelic, Nebojsa D.; Bozic, Bojan; Zmejkovski, Bojana B.; Banjac, Nebojsa R.; Dojcinovic, Biljana; Wessjohann, Ludger A.; Kaluderovic, Goran N..

The synthesis of novel triphenyltin(IV) compounds, Ph3SnLn (n = 1-3), with oxaprozin (3-(4,5-diphenyloxazol-2-yl)propanoic acid), HL1, and the new propanoic acid derivatives 3-(4,5-bis(4-methoxylphenyl)oxazol-2-yl)propanoic acid, HL2, and 3-(2,5-dioxo-4,4-diphenylimidazolidin-1-yl)propanoic acid, HL3, has been performed. The ligands represent com. drugs or their derivatives and the tin complexes have been characterized by standard anal. methods. The in vitro antiproliferative activity of both ligands and organotin(IV) compounds has been evaluated on the following tumor cell lines: human prostate cancer (PC-3), human colorectal adenocarcinoma (HT-29), breast cancer (MCF-7), and hepatocellular cancer (HepG2), as well as on normal mouse embryonic fibroblast cells (NIH3T3) with the aid of MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-12 diphenyltetrazolium bromide) and CV (crystal violet) assays. Contrary to the inactive ligand precursors, all organotin(IV) carboxylates showed very good activity with IC50 values ranging from 0.100 to 0.758 μM. According to the CV assay (IC50 = 0.218 ± 0.025 μM), complex Ph3SnL1 demonstrated the highest cytotoxicity against the caspase 3 deficient MCF-7 cell line. Inductively coupled plasma mass spectrometry (ICP-MS) anal. indicated a two-fold lower concentration of tin in MCF-7 cells in comparison to platinum. To investigate the mechanism of action of the compound Ph3SnL1 on MCF-7 cells, morphol., autophagy and cell cycle anal., as well as the activation of caspase and ROS/RNS and NO production, has been performed. Results suggest that Ph3SnL1 induces caspase-independent apoptosis in MCF-7 cells.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Computed Properties of C4H7BrO2. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Methyl 3-bromopropanoate, is researched, Molecular C4H7BrO2, CAS is 3395-91-3, about Asymmetric α-alkylation of cyclic β-keto esters and β-keto amides by phase-transfer catalysis. Author is Wang, Yakun; Li, Yueyun; Lian, Mingming; Zhang, Jixia; Liu, Zhaomin; Tang, Xiaofei; Yin, Hang; Meng, Qingwei.

Without employing any transition metal, a highly enantioselective α-alkylation of cyclic β-keto esters and β-keto amides has been realized by phase-transfer catalysis. This improved procedure is applicable to different kinds of bromides with cinchona derivatives and gives the corresponding products e.g., I and e.g., II, in excellent enantiopurities (up to 98% ee) and good yields (up to 98%). Moreover, the reaction was scalable and the phase-transfer catalyst was recyclable. This provided an alternative and competitive method to the asym. α-alkylation of β-dicarbonyl compounds

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Methyl 3-bromopropanoate(SMILESS: O=C(OC)CCBr,cas:3395-91-3) is researched.Recommanded Product: 2489531-02-2. The article 《Asymmetric α-alkylation of cyclic β-keto esters and β-keto amides by phase-transfer catalysis》 in relation to this compound, is published in Organic & Biomolecular Chemistry. Let’s take a look at the latest research on this compound (cas:3395-91-3).

Without employing any transition metal, a highly enantioselective α-alkylation of cyclic β-keto esters and β-keto amides has been realized by phase-transfer catalysis. This improved procedure is applicable to different kinds of bromides with cinchona derivatives and gives the corresponding products e.g., I and e.g., II, in excellent enantiopurities (up to 98% ee) and good yields (up to 98%). Moreover, the reaction was scalable and the phase-transfer catalyst was recyclable. This provided an alternative and competitive method to the asym. α-alkylation of β-dicarbonyl compounds

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Methyl 3-bromopropanoate, is researched, Molecular C4H7BrO2, CAS is 3395-91-3, about Iodinated Cyanine Dyes for Fast Near-Infrared-Guided Deep Tissue Synergistic Phototherapy, the main research direction is iodinated cyanine dye NIR phototherapy photodynamic therapy; Iodinated cyanine dyes; NIR imaging; enhanced ROS production; photodynamic therapy; photothermal therapy.Computed Properties of C4H7BrO2.

Phototheranostics, which combines deep tissue imaging and phototherapy [photodynamic therapy (PDT) and/or photothermal therapy (PTT)] via light irradiation, is a promising strategy to treat tumors. Near-IR (NIR) cyanine dyes are researched as potential phototheranostics reagents for their excellent photophys. properties. However, the low singlet oxygen generation efficiency of cyanine dyes often leads to inadequate therapeutic efficacy for tumors. Herein, we modified an indocyanine green derivative Cy7 with heavy atom iodine to form a novel NIR dye CyI to improve the reactive oxygen species (ROS) production and heat generation while, at the same time, maintain their fluorescence characteristics for in vivo noninvasive imaging. More importantly, in vitro and in vivo therapeutic results illustrated that CyI could quickly and simultaneously generate enhanced ROS and heat to induce more cancer cell apoptosis and higher inhibition rates in deep HepG2 tumors than other noniodinated NIR dyes upon NIR irradiation Besides, low toxicity of the resulted iodinated NIR dyes was confirmed by in vivo biodistribution and acute toxicity. Results indicate that this low toxic NIR dye could be an ideal phototheranostics agent for deep tumor treatments. Our study presents a novel approach to achieve the fast-synergistic PDT/PTT treatment in deep tissues.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 3395-91-3, is researched, Molecular C4H7BrO2, about Discovery of Novel Janus Kinase (JAK) and Histone Deacetylase (HDAC) Dual Inhibitors for the Treatment of Hematological Malignancies, the main research direction is pyrimidinaminopyrazole hydroxamate preparation JAK HDAC inhibitor hematol malignancy treatment; selected pyrimidinaminopyrazole compound pharmacokinetic study bioavailability antitumor efficacy.Electric Literature of C4H7BrO2.

Concurrent inhibition of Janus kinase (JAK) and histone deacetylase (HDAC) could potentially improve the efficacy of the HDAC inhibitors in the treatment of cancers and resolve the problem of HDAC inhibitor resistance in some tumors. Here, a novel series of pyrimidin-2-amino-pyrazol hydroxamate derivatives as JAK and HDAC dual inhibitors was designed, synthesized, and evaluated, among which I possessed potent and balanced activities against both JAK2 and HDAC6 with half-maximal inhibitory concentration at the nanomolar level. I exhibited improved antiproliferative and proapoptotic activities over SAHA and ruxolitinib in several hematol. cell lines. Remarkably, I exhibited more potent antiproliferation effect than the combination of SAHA and ruxolitinib in HEL cells bearing JAK2V617F mutation. Pharmacokinetic studies in mice showed that I possessed good bioavailability after i.p. administration. Finally, I showed antitumor efficacy with no significant toxicity in a HEL xenograft model. Collectively, the results confirm the therapeutic potential of JAK and HDAC dual inhibitors in hematol. malignancies and provide valuable leads for further structural optimization and antitumor mechanism study.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Product Details of 3395-91-3. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Methyl 3-bromopropanoate, is researched, Molecular C4H7BrO2, CAS is 3395-91-3, about Discovery of Novel Janus Kinase (JAK) and Histone Deacetylase (HDAC) Dual Inhibitors for the Treatment of Hematological Malignancies. Author is Liang, Xuewu; Zang, Jie; Li, Xiaoyang; Tang, Shuai; Huang, Min; Geng, Meiyu; Chou, C. James; Li, Chunpu; Cao, Yichun; Xu, Wenfang; Liu, Hong; Zhang, Yingjie.

Concurrent inhibition of Janus kinase (JAK) and histone deacetylase (HDAC) could potentially improve the efficacy of the HDAC inhibitors in the treatment of cancers and resolve the problem of HDAC inhibitor resistance in some tumors. Here, a novel series of pyrimidin-2-amino-pyrazol hydroxamate derivatives as JAK and HDAC dual inhibitors was designed, synthesized, and evaluated, among which I possessed potent and balanced activities against both JAK2 and HDAC6 with half-maximal inhibitory concentration at the nanomolar level. I exhibited improved antiproliferative and proapoptotic activities over SAHA and ruxolitinib in several hematol. cell lines. Remarkably, I exhibited more potent antiproliferation effect than the combination of SAHA and ruxolitinib in HEL cells bearing JAK2V617F mutation. Pharmacokinetic studies in mice showed that I possessed good bioavailability after i.p. administration. Finally, I showed antitumor efficacy with no significant toxicity in a HEL xenograft model. Collectively, the results confirm the therapeutic potential of JAK and HDAC dual inhibitors in hematol. malignancies and provide valuable leads for further structural optimization and antitumor mechanism study.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Methyl 3-bromopropanoate( cas:3395-91-3 ) is researched.Quality Control of Methyl 3-bromopropanoate.Cao, Jie; Chi, Jinnan; Xia, Junfei; Zhang, Yanru; Han, Shangcong; Sun, Yong published the article 《Iodinated Cyanine Dyes for Fast Near-Infrared-Guided Deep Tissue Synergistic Phototherapy》 about this compound( cas:3395-91-3 ) in ACS Applied Materials & Interfaces. Keywords: iodinated cyanine dye NIR phototherapy photodynamic therapy; Iodinated cyanine dyes; NIR imaging; enhanced ROS production; photodynamic therapy; photothermal therapy. Let’s learn more about this compound (cas:3395-91-3).

Phototheranostics, which combines deep tissue imaging and phototherapy [photodynamic therapy (PDT) and/or photothermal therapy (PTT)] via light irradiation, is a promising strategy to treat tumors. Near-IR (NIR) cyanine dyes are researched as potential phototheranostics reagents for their excellent photophys. properties. However, the low singlet oxygen generation efficiency of cyanine dyes often leads to inadequate therapeutic efficacy for tumors. Herein, we modified an indocyanine green derivative Cy7 with heavy atom iodine to form a novel NIR dye CyI to improve the reactive oxygen species (ROS) production and heat generation while, at the same time, maintain their fluorescence characteristics for in vivo noninvasive imaging. More importantly, in vitro and in vivo therapeutic results illustrated that CyI could quickly and simultaneously generate enhanced ROS and heat to induce more cancer cell apoptosis and higher inhibition rates in deep HepG2 tumors than other noniodinated NIR dyes upon NIR irradiation Besides, low toxicity of the resulted iodinated NIR dyes was confirmed by in vivo biodistribution and acute toxicity. Results indicate that this low toxic NIR dye could be an ideal phototheranostics agent for deep tumor treatments. Our study presents a novel approach to achieve the fast-synergistic PDT/PTT treatment in deep tissues.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem