Month: October 2022

Zhang, Ming; Wang, Wentao; Mohammadniaei, Mohsen; Zheng, Tao; Zhang, Qicheng; Ashley, Jon; Liu, Shunjie; Sun, Yi; Tang, Ben Zhong published their research in Advanced Materials (Weinheim, Germany) in 2021. The article was titled 《Upregulating Aggregation-Induced-Emission Nanoparticles with Blood-Tumor-Barrier Permeability for Precise Photothermal Eradication of Brain Tumors and Induction of Local Immune Responses》.Application In Synthesis of Bis(4-methoxyphenyl)amine The article contains the following contents:

Compared to other tumors, glioblastoma (GBM) is extremely difficult to treat. Recently, photothermal therapy (PTT) has demonstrated advanced therapeutic efficacy; however, because of the relatively low tissue-penetration efficiency of laser light, its application in deep-seated tumors remains challenging. Herein, bradykinin (BK) aggregation-induced-emission nanoparticles (BK@AIE NPs) are synthesized; these offer selective penetration through the blood-tumor barrier (BTB) and strong absorbance in the near-IR region (NIR). The BK ligand can prompt BTB adenosine receptor activation, which enhances transportation and accumulation inside tumors, as confirmed by T1-weighted magnetic resonance and fluorescence imaging. The BK@AIE NPs exhibit high photothermal conversion efficiency under 980 nm NIR laser irradiation, facilitating the treatment of deep-seated tumors. Tumor progression can be effectively inhibited to extend the survival span of mice after spatiotemporal PTT. NIR irradiation can eradicate tumor tissues and release tumor-associated antigens. It is observed that the PTT treatment of GBM-bearing mice activates natural killer cells, CD3+ T cells, CD8+ T cells, and M1 macrophages in the GBM area, increasing the therapeutic efficacy. This study demonstrates that NIR-assisted BK@AIE NPs represent a promising strategy for the improved systematic elimination of GBMs and the activation of local brain immune privilege. In the experimental materials used by the author, we found Bis(4-methoxyphenyl)amine(cas: 101-70-2Application In Synthesis of Bis(4-methoxyphenyl)amine)

Bis(4-methoxyphenyl)amine(cas: 101-70-2) is a diphenylamine derivative used as a chemical additive for cured rubber.Bis(4-methoxyphenyl)amine is highly toxic and may potentially induce chromosome abberation.Application In Synthesis of Bis(4-methoxyphenyl)amine

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Tang, Shuai; Chen, Qiliang; Si, Yubing; Guo, Wei; Mao, Bingwei; Fu, Yongzhu published their research in Advanced Materials (Weinheim, Germany) in 2021. The article was titled 《Size Effect of Organosulfur and In Situ Formed Oligomers Enables High-Utilization Na-Organosulfur Batteries》.Application of 882-33-7 The article contains the following contents:

Organosulfurs are promising cathode materials for rechargeable metal batteries due to their high capacities, diverse structures, and electrochem. properties. Herein, the electrochem. behavior of three organosulfur compounds, i.e., 4,4′-thiobisbenzenethiol (TBBT), 1,4-benzenedithiol (1,4-BDT), and di-Ph disulfide (DPDS), is revealed in room-temperature rechargeable sodium (Na) batteries, which show significantly improved performances when sodiated Nafion membranes are used. Large oligomers of organosulfur can be formed during charging, and they are readily blocked by the nanosized ion-conducting clusters in the Nafion membrane. In addition, large organosulfur monomers can also be blocked. Only 5.4% of TBBT diffuses through the Nafion membrane after 800 h. The Na|TBBT cell sustains 77% of the theor. capacity after 300 cycles (2420 h). Moreover, the Na|TBBT redox flow cell shows promising rechargeability. Due to the medium mol. size, the organosulfur oligomers are expected to provide a new avenue to develop high-capacity chalcogen cathodes, besides inorganic S and S-containing polymers. The experimental process involved the reaction of 1,2-Diphenyldisulfane(cas: 882-33-7Application of 882-33-7)

1,2-Diphenyldisulfane(cas: 882-33-7) belongs to ethers.Application of 882-33-7Although ethers resist hydrolysis, they are cleaved by hydrobromic acid and hydroiodic acid. Hydrogen chloride cleaves ethers only slowly.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Jozwiak, Malgorzata; Urban, Aleksandra; Tyczynska, Magdalena published their research in Journal of Molecular Liquids in 2021. The article was titled 《Effect of properties of N,N-dimethylformamide + propan-1-ol mixtures on the solution enthalpy of selected cyclic ethers in these mixtures at 298.15 K. The contribution of solvent to the enthalpy of solvation of cyclic ethers》.COA of Formula: C10H20O5 The article contains the following contents:

The enthalpies of solution of cyclic ethers (1,4-dioxane, 12-crown-4, 15-crown-5 and 18-crown-6) in N,N-dimethylformamide+propan-1-ol mixtures have been measured over the range of composition of the mixture at 298.15 K. The preferential solvation process of cyclic ethers mols. in the investigated mixture has been discussed. The mole fraction of N,N-dimethylforamide in the solvation sphere of cyclic ethers and the contribution of solvent to the solvation enthalpy of cyclic ethers has been calculated On the basis of the obtained data, the effect of the structural and energetic properties N,N-dimethylformamide+propan-1-ol mixtures on the enthalpy of solution of cyclic ethers in these mixtures has been analyzed. The results obtained have been compared with analogous data of solvation enthalpy of selected glymes in N,N-dimethylformamide+propan-1-ol mixtures In the experiment, the researchers used 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5COA of Formula: C10H20O5)

1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. COA of Formula: C10H20O5

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Kawashita, Seiji; Aoyagi, Koichi; Fukushima, Kyoko; Hantani, Rie; Naruoka, Shiori; Tanimoto, Atsuo; Hori, Yuji; Toyonaga, Yukiyo; Yamanaka, Hiroshi; Miyazaki, Susumu; Hantani, Yoshiji published an article in 2021. The article was titled 《SAR study of small molecule inhibitors of the programmed cell death-1/programmed cell death-ligand 1 interaction》, and you may find the article in Chemical Biology & Drug Design.Related Products of 139115-91-6 The information in the text is summarized as follows:

The development of small mol. inhibitors of programmed cell death-1/programmed cell death-ligand 1 (PD-1/PD-L1) has drawn research interest for the treatment of cancer. Recently, we reported the discovery of a novel dimeric core small mol. PD-1/PD-L1 inhibitor. In an effort to discover more potent inhibitors, we further explored the dimeric core scaffold. Our investigations of the structure-activity-relationship revealed that introduction of lipophilic substituents onto one of the di-alkoxylated Ph rings improved binding affinities to PD-L1, and inhibitory activities of PD-1/PD-L1 in cellular assays. Furthermore, conversion of the ether linker part to an olefin linker not only improved binding affinity but also led to slow dissociation binding kinetics. We also explored more potent, as well as downsized, scaffolds. Compounds bearing a linear chain in place of one of the di-alkoxylated Ph rings exhibited good binding affinity with improved ligand efficiency (LE). Representative compounds demonstrated potent inhibitory activities of PD-1/PD-L1 in the submicromolar range in cellular assays as well as cellular function in the mixed lymphocyte reaction (MLR) assay with efficacy comparable to anti-PD-1 antibody. Our results provide applicable information for the design of more potent inhibitors targeting PD-1/PD-L1 pathway. After reading the article, we found that the author used tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate(cas: 139115-91-6Related Products of 139115-91-6)

tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate(cas: 139115-91-6) belongs to ethers.Related Products of 139115-91-6Although ethers resist hydrolysis, they are cleaved by hydrobromic acid and hydroiodic acid. Hydrogen chloride cleaves ethers only slowly.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

In 2022,Song, Xue; Zhang, Jie; Wu, Yu-Xing; Ouyang, Qin; Du, Wei; Chen, Ying-Chun published an article in Journal of the American Chemical Society. The title of the article was 《Asymmetric Formal Nucleophilic o-Cresolylation with Morita-Baylis-Hillman Carbonates of 2-Cyclohexenones via Palladium Catalysis》.Computed Properties of C8H8O3 The author mentioned the following in the article:

Here Authors report an asym. formal nucleophilic o-cresolylation reaction with the Morita-Baylis-Hillman (MBH) carbonates from 2-cyclohexanones and diverse aldehydes under palladium catalysis, by in situ generation of electron-neutral and HOMO-raised η2-Pd(0)-dienone complexes via an oxidative insertion/π-σ-isomerization/β-H elimination activation sequence. The subsequent umpolung vinylogous addition to a variety of imines is realized upon Pd(0)-mediated π-Lewis base catalysis, finally furnishing o-cresolylated products followed by another cascade of a π-σ-isomerization/β-H elimination/aromatization process. Moderate to excellent diastereo- and enantioselectivity are achieved for substantial substrate assemblies by employing a newly designed bulky chiral phosphonamidite ligand, and the resultant multifunctional products can be facilely elaborated to access diverse enantioenriched architectures. In addition, the catalytic reaction pathway is finely illuminated by control experiments In the experiment, the researchers used many compounds, for example, 2-Hydroxy-4-methoxybenzaldehyde(cas: 673-22-3Computed Properties of C8H8O3)

2-Hydroxy-4-methoxybenzaldehyde(cas: 673-22-3) is the main component of root bark essential oil of Periploca sepium Bunge. It is a potential tyrosinase inhibitor present in African medicinal plants. 2-Hydroxy-4-methoxybenzaldehyde was used in the synthesis of Schiff base ligand.Computed Properties of C8H8O3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Recommanded Product: 3-Methoxyphenylboronic acidIn 2019 ,《Heterogeneous Chiral Diene-Rh Complexes for Asymmetric Arylation of α,β-Unsaturated Carbonyl Compounds, Nitroalkenes, and Imines》 appeared in Advanced Synthesis & Catalysis. The author of the article were Kuremoto, Tatsuya; Yasukawa, Tomohiro; Kobayashi, Shu. The article conveys some information:

A chiral diene ligand with tertiary alkyl amine-derived secondary amide moiety was immobilized on cross-linked polystyrene (PS) by radical polymerization, which was combined with Rh to form heterogeneous chiral Rh complexes (PS-diene Rh-Cl). PS-diene Rh-Cl catalyzed asym. arylation reactions of α,β-unsaturated carbonyl compounds (ketones, esters, and amides), nitroalkenes, and imines afforded the desired products in high yields with excellent enantioselectivities. PS-diene Rh-Cl is stable in air, can be stored for several months, and can be reused more than 10 times without any reduction of either yield or enantioselectivity. We also developed a method of activation of PS-diene Rh-Cl to generate more active species. In the experimental materials used by the author, we found 3-Methoxyphenylboronic acid(cas: 10365-98-7Recommanded Product: 3-Methoxyphenylboronic acid)

3-Methoxyphenylboronic acid(cas: 10365-98-7) belongs to boronic acids. Boronic acids are mild Lewis acids which are generally stable and easy to handle, making them important to organic synthesis.Recommanded Product: 3-Methoxyphenylboronic acid

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

HPLC of Formula: 135-02-4In 2019 ,《Aqueous hydrotropic solution: green reaction medium for synthesis of pyridopyrimidine carbonitrile and spiro-oxindole dihydroquinazolinone derivatives》 appeared in Research on Chemical Intermediates. The author of the article were Patil, Audumbar; Mane, Ananda; Kamat, Siddharth; Lohar, Trushant; Salunkhe, Rajashri. The article conveys some information:

An efficient multicomponent domino approach for synthesis of pyridopyrimidine carbonitriles I [R = 2-NO2, 4-Me, 3-Cl, etc.] and spiro-oxindole dihydroquinazolinones II [R1 = 3-NO2, 4-CN, 3-OH, etc.] by one-pot reaction in 50 % aqueous sodium p-toluene sulfonate (NaPTS) solution at ambient reaction condition was reported. The merits of present protocol were short reaction time, excellent product yield with high purity, easy workup procedure and reusability of reaction medium. The results came from multiple reactions, including the reaction of 2-Methoxybenzaldehyde(cas: 135-02-4HPLC of Formula: 135-02-4)

2-Methoxybenzaldehyde(cas: 135-02-4) is found in cassia oil, cinnamon bark, and cinnamon bark oil. It is a clear colorless liquid with a strong aroma. It has been used to examine the acaricidal activity of Periploca sepium oil and its active component against Tyrophagus putrescentiae.HPLC of Formula: 135-02-4

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Electric Literature of C9H10O2In 2021 ,《Metallaphotoredox aryl and alkyl radiomethylation for PET ligand discovery》 appeared in Nature (London, United Kingdom). The author of the article were Pipal, Robert W.; Stout, Kenneth T.; Musacchio, Patricia Z.; Ren, Sumei; Graham, Thomas J. A.; Verhoog, Stefan; Gantert, Liza; Lohith, Talakad G.; Schmitz, Alexander; Lee, Hsiaoju S.; Hesk, David; Hostetler, Eric D.; Davies, Ian W.; MacMillan, David W. C.. The article conveys some information:

Positron emission tomog. (PET) radioligands (radioactively labeled tracer compounds) are extremely useful for in vivo characterization of central nervous system drug candidates, neurodegenerative diseases and numerous oncol. targets1. Both tritium and carbon-11 radioisotopologues are generally necessary for in vitro and in vivo characterization of radioligands2, yet there exist few radiolabelling protocols for the synthesis of either, inhibiting the development of PET radioligands. The synthesis of such radioligands also needs to be very rapid owing to the short half-life of carbon-11. Here we report a versatile and rapid metallaphotoredox-catalyzed method for late-stage installation of both tritium and carbon-11 into the desired compounds via methylation of pharmaceutical precursors bearing aryl and alkyl bromides. Me groups are among the most prevalent structural elements found in bioactive mols., and so this synthetic approach simplifies the discovery of radioligands. To demonstrate the breadth of applicability of this technique, we perform rapid synthesis of 20 tritiated and 10 carbon-11-labeled complex pharmaceuticals and PET radioligands, including a one-step radiosynthesis of the clin. used compounds [11C]UCB-J and [11C]PHNO. We further outline the direct utility of this protocol for preclin. PET imaging and its translation to automated radiosynthesis for routine radiotracer production in human clin. imaging. We also demonstrate this protocol for the installation of other diverse and pharmaceutically useful isotopes, including carbon-14, carbon-13 and deuterium. In the experimental materials used by the author, we found 2-(Benzyloxy)acetaldehyde(cas: 60656-87-3Electric Literature of C9H10O2)

2-(Benzyloxy)acetaldehyde(cas: 60656-87-3) is a non-natural aldehyde. It undergoes enantioselective Mukaiyama aldol reaction with silylketene acetal nucleophiles in the presence of C2-symmetric bis(oxazolinyl)pyridine Cu(II) complex (catalyst).Electric Literature of C9H10O2

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Synthetic Route of C28H28O3In 2020 ,《The third-generation retinoid adapalene triggered DNA damage to induce S-phase arrest in HaCat cells》 appeared in Fundamental & Clinical Pharmacology. The author of the article were Wang, Cheng; Li, Hongyang; Ma, Pengcheng; Sun, Jianfang; Li, Lingjun; Wei, Jun; Tao, Lei; Qian, Kun. The article conveys some information:

Epidermal proliferative diseases consisted of a series of common skin diseases, most of which were recurrent chronic skin diseases, and had greatly neg. influence on the life quality of patient. Retinoids exhibited vital roles in the treatment of many skin diseases. Our recent study demonstrated that adapalene significantly inhibited the growth of HaCat cells, and the inhibitory activity was stronger than other retinoids, such as all-trans-retinoic acid, acitretin, isotretinoin, tazarotene, and bexarotene. Further study showed that adapalene suppressed the colony formation of HaCat cells, and it dramatically triggered S-phase arrest and apoptosis, rather than G1 phase arrest which was reported in other retinoids in several studies. Addnl., adapalene treatment greatly upregulated the protein expression of DNA damage marker γ-H2AX, which was in accord with the results of the elongation of tail moment by comet electrophoresis anal. Moreover, DNA damage was triggered and DNA repair was suppressed synchronously with adapalene treatment, which accounted for the mechanism of S-phase arrest induced by adapalene. In summary, our recent work demonstrated that adapalene showed strong anti-proliferation activity in HaCat cells and could be an alternative agent for the epidermal proliferative disease. In the experiment, the researchers used many compounds, for example, 6-(3-(Adamantan-1-yl)-4-methoxyphenyl)-2-naphthoic acid(cas: 106685-40-9Synthetic Route of C28H28O3)

6-(3-(Adamantan-1-yl)-4-methoxyphenyl)-2-naphthoic acid(cas:106685-40-9) is a third-generation synthetic retinoid and a highly lipophilic compound derived from naphthoic acid. It is widely used in the treatment of acne.Synthetic Route of C28H28O3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

COA of Formula: C9H10O2In 2021 ,《Bio-derived nanosilica-anchored Cu(II)-organoselenium complex as an efficient retrievable catalyst for alcohol oxidation》 was published in Applied Organometallic Chemistry. The article was written by Gogoi, Rajjyoti; Borah, Geetika. The article contains the following contents:

A new copper(II) complex supported onto rice-husk-derived nanosilica was prepared from 2,6-bis((phenylselanyl)methyl)pyridine, salicylaldehyde and copper acetate monohydrate, Cu(OAc)2·H2O. The as-synthesized complex Cu(II)SeNSe@imine-nanoSiO2 (Complex I) was extensively characterized with FT-IR, powder XRD, SEM-EDX, solid-state UV-Vis, ESR, XPS, TGA and BET surface area anal. The catalytic activity of the complex was explored for alc. oxidation reactions using H2O2 as oxidant and acetonitrile as solvent. For comparison, we have also prepared an analogous homogeneous catalyst (Complex II) and characterized it with FT-IR, UV-Vis, LC-MS and ESR analyses. Its catalytic activity was also screened to the same reaction. The immobilized catalyst showed better efficiency with 75%-95% isolated yield compared with the homogeneous one for alc. oxidation with at least five times recyclability without profound loss in activity. In addition to this study using 2-(Benzyloxy)acetaldehyde, there are many other studies that have used 2-(Benzyloxy)acetaldehyde(cas: 60656-87-3COA of Formula: C9H10O2) was used in this study.

2-(Benzyloxy)acetaldehyde(cas: 60656-87-3) is a non-natural aldehyde. It undergoes enantioselective Mukaiyama aldol reaction with silylketene acetal nucleophiles in the presence of C2-symmetric bis(oxazolinyl)pyridine Cu(II) complex (catalyst).COA of Formula: C9H10O2

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem