Category: imidazoles-derivatives

Zhou, Yan; Xu, Xuexia; Wei, Yifeng; Cheng, Yu; Guo, Yu; Khudyakov, Ivan; Liu, Fuli; He, Ping; Song, Zhangyue; Li, Zhi; Gao, Yan; Ang, Ee Lui; Zhao, Huimin; Zhang, Yan; Zhao, Suwen published the artcile< A widespread pathway for substitution of adenine by diaminopurine in phage genomes>, Reference of 452-06-2, the main research area is pathway substitution adenine diaminopurine phage genome PurZ enzyme ZDNA.

DNA modifications vary in form and function but generally do not alter Watson-Crick base pairing. Diaminopurine (Z) is an exception because it completely replaces adenine and forms three hydrogen bonds with thymine in cyanophage S-2L genomic DNA. However, the biosynthesis, prevalence, and importance of Z genomes remain unexplored. Here, we report a multienzyme system that supports Z-genome synthesis. We identified dozens of globally widespread phages harboring such enzymes, and we further verified the Z genome in one of these phages, Acinetobacter phage SH-Ab 15497, by using liquid chromatog. with UV and mass spectrometry. The Z genome endows phages with evolutionary advantages for evading the attack of host restriction enzymes, and the characterization of its biosynthetic pathway enables Z-DNA production on a large scale for a diverse range of applications.

Science (Washington, DC, United States) published new progress about Bacteriophage. 452-06-2 belongs to class imidazoles-derivatives, and the molecular formula is C5H5N5, Reference of 452-06-2.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Gu, Y. Y.; Yu, J.; Zhang, J. F.; Wang, C. published the artcile< Suppressing the secretion of exosomal miR-19b by GW4869 could regulate oxaliplatin sensitivity in colorectal cancer>, Safety of p-Benzenediacrylanilide, 4′,4′′-di-2-imidazolin-2-yl-, dihydrochloride, the main research area is oxaliplatin MiR19b GW4869 colorectal cancer.

Oxaliplatin is commonly used in managing malignancy, including colorectal cancer. While treatment oftn fails due to decreased drug sensitivity, the mechanisms involved are not clear. In this study, we investigate how exosomal miR-19b participates in oxaliplatin sensitivity and then prove that miR-19b down-regulates oxaliplatin sensitivity of sw480 cells. We found that suppressing the secretion of exosomal miR-19b with gw4869 promotes sw480 cell oxaliplatin sensitivity. Our combined results demonstrate for the first time that miR-19b regulates the oxaliplatin sensitivity of sw480 cells and provides a unique mechanism mediated by gw4869 to modulate oxaliplatin sensitivity by suppressing exosomal miR-19b release.

Neoplasma published new progress about Bioinformatics. 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, Safety of p-Benzenediacrylanilide, 4′,4′′-di-2-imidazolin-2-yl-, dihydrochloride.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Thripuram, Vijaya Durga; Bollikolla, Hari Babu; Reddy Mule, Siva Nagi; Battula, Sailaja Kumari; Ala, Vasu Babu published the artcile< A Novel Approach for Substitution of Sulfonate Group by (1H)-imidazole moiety: An Application for Synthesis of Novel Benzyl Imidazolylcarbamates>, SDS of cas: 1003-21-0, the main research area is benzyl imidazolylcarbamate preparation.

An efficient and convenient substitution protocol was developed for the synthesis of novel benzyl (1-methyl-1H-imidazol-5-yl) (aryl) Me carbamate derivatives from alpha-amido sulfones with a solution 5-bromo-1-methyl-(1H)-imidazole in THF under Hexamethylphosphoramide (HMPA) and t-BuLi medium at -78° to room temperature The reactions were monitored with TLC for about 3-4 h.The yields obtained were also considerably good.

Letters in Organic Chemistry published new progress about Aromatic carbonyl compounds Role: RCT (Reactant), RACT (Reactant or Reagent). 1003-21-0 belongs to class imidazoles-derivatives, and the molecular formula is C4H5BrN2, SDS of cas: 1003-21-0.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Collins, Mark A.; Hudak, Valerie; Bender, Reinhold; Fensome, Andrew; Zhang, Puwen; Miller, Lori; Winneker, Richard C.; Zhang, Zhiming; Zhu, Yuan; Cohen, Jeffrey; Unwalla, Rayomond J.; Wrobel, Jay published the artcile< Novel pyrrole-containing progesterone receptor modulators>, Synthetic Route of 1003-21-0, the main research area is indolone pyrrolyl preparation progesterone receptor agonist antagonist; benzoxazinone pyrrolyl preparation progesterone receptor agonist antagonist.

A series of 1,4-dihydro-2H-[d][3,1]-benzoxazin-2-one and 1,3-dihydro-[3H]-indol-2-one containing 6- or 5-, resp., appended substituted pyrrole moieties were synthesized and evaluated for their ability to modulate the activity of the progesterone receptor (PR). Key structural changes to the pyrrole moieties of these mols. were shown to have a predictive influence as to whether the compounds behaved as PR agonists or antagonists. Compounds with the 5′-cyano-2′-pyrrole moiety were shown to be potent PR agonists (EC50’s of 1.1, 1.8, and 2.8 nM, resp.). Compounds with the 5′-nitro-2′-pyrrole moiety were shown to be PR antagonists (IC50’s of 180 and 36 nM, resp.).

Bioorganic & Medicinal Chemistry Letters published new progress about Progesterone receptors Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 1003-21-0 belongs to class imidazoles-derivatives, and the molecular formula is C4H5BrN2, Synthetic Route of 1003-21-0.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Li, Shichao; Gao, Yuanfeng; Liu, Ye; Li, Jing; Yang, Xiyan; Hu, Roumu; Liu, Jia; Zhang, Yuan; Zuo, Kun; Li, Kuibao; Yin, Xiandong; Chen, Mulei; Zhong, Jiuchang; Yang, Xinchun published the artcile< Myofibroblast-Derived Exosomes Contribute to Development of a Susceptible Substrate for Atrial Fibrillation>, Name: p-Benzenediacrylanilide, 4′,4′′-di-2-imidazolin-2-yl-, dihydrochloride, the main research area is atrial fibrillation myofibroblast cardiomyocyte exosome; Atrial fibrillation; Exosome; L-type calcium channel; Paracrine communication.

Atrial fibrosis plays a critical role in atrial fibrillation (AF). A key event in the pathogenesis of fibrosis is the activation of fibroblasts (FBs) into myofibroblasts (MFBs). Paracrine factors released from MFBs lead to ion channel expression changes in cardiomyocytes (CMs). Downregulation of L-type calcium channel Cav1.2 expression is a hallmark of AF-associated ionic remodeling. However, whether exosome-mediated crosstalk between MFBs and CMs regulates Cav1.2 expression remains unknown. Atrial FBs and CMs were isolated and cultured from neonatal rats by enzymic digestion. Untreated FBs expressed limited amounts of alpha smooth muscle actin (α-SMA), while angiotensin II induced a significant upregulation of α-SMA-expressing MFBs. Co-cultures of MFBs and CMs resulted in downregulation of Cav1.2 expression in CMs, which was largely abolished by pretreatment of MFBs with exosomal inhibitor GW4869. Addnl., the adrenergic receptor agonist-elicited Ca2 influx signals in CMs were remarkably attenuated by pretreatment with MFB-derived Exos, corresponding to the paralleled change in Cav1.2 expression. Finally, miR-21-3p, a potential Cav1.2-inhibitory miRNA, was enriched in MFB-derived Exos and upregulated in CMs in response to MFB-derived Exos. We uncover an Exo-mediated crosstalk between MFBs and CMs, contributing to increased vulnerability to AF by reducing the expression of Cav1.2 in CMs.

Cardiology published new progress about Atrial fibrillation. 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, Name: p-Benzenediacrylanilide, 4′,4′′-di-2-imidazolin-2-yl-, dihydrochloride.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Sarkar, Satavisha; Banerjee, Arghya; Yao, Wang; Patterson, Eric V.; Ngai, Ming-Yu published the artcile< Photocatalytic Radical Aroylation of Unactivated Alkenes: Pathway to β-Functionalized 1,4-, 1,6-, and 1,7-Diketones>, Related Products of 1003-21-0, the main research area is unsym diketone preparation photoredox catalysis; aroyl chloride unactivated alkene aroylation photochem; 1,n-diketones; aroylation; migration; photoredox catalysis; unactivated alkenes.

The development of a photocatalytic strategy for the synthesis of β-functionalized unsym. 1,4-, 1,6-, and 1,7-diketones from aroyl chlorides and unactivated alkenes at room temperature is reported. The mild reaction conditions not only tolerate a wide range of functional groups and structural moieties, but also enable migration of a variety of distal groups including (hetero)arenes, nitrile, aldehyde, oxime derivative, and alkene. The efficiency of chirality transfer, factors that control the distal-group migration, and synthesis of carbocycles and heterocycles from the diketones are also described. Mechanistic studies suggest a reaction pathway involving a photocatalytic radical aroylation of unactivated alkenes followed by a distal-group migration, oxidation, and deprotonation to afford the desired diketones.

ACS Catalysis published new progress about Alcohols, unsaturated Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation) (tertiary). 1003-21-0 belongs to class imidazoles-derivatives, and the molecular formula is C4H5BrN2, Related Products of 1003-21-0.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Guo, Belinda B.; Bellingham, Shayne A.; Hill, Andrew F. published the artcile< The Neutral Sphingomyelinase Pathway Regulates Packaging of the Prion Protein into Exosomes>, Computed Properties of 6823-69-4, the main research area is neutral sphingomyelinase packaging prion protein exosome; Ceramide; Exosome; Exosomes; Extracellular Vesicles; Neutral Sphingomyelinase; Prion; Prion Disease; nSMase2.

Prion diseases are a group of transmissible, fatal neurodegenerative disorders associated with the misfolding of the host-encoded prion protein, PrPC, into a disease-associated form, PrPSc. The transmissible prion agent is principally formed of PrPSc itself and is associated with extracellular vesicles known as exosomes. Exosomes are released from cells both in vitro and in vivo, and have been proposed as a mechanism by which prions spread intercellularly. The biogenesis of exosomes occurs within the endosomal system, through formation of intraluminal vesicles (ILVs), which are subsequently released from cells as exosomes. ILV formation is known to be regulated by the endosomal sorting complexes required for transport (ESCRT) machinery, although an alternative neutral sphingomyelinase (nSMase) pathway has been suggested to also regulate this process. Here, we investigate a role for the nSMase pathway in exosome biogenesis and packaging of PrP into these vesicles. Inhibition of the nSMase pathway using GW4869 revealed a role for the nSMase pathway in both exosome formation and PrP packaging. In agreement, targeted knockdown of nSMase1 and nSMase2 in mouse neurons using lentivirus-mediated RNAi also decreases exosome release, demonstrating the nSMase pathway regulates the biogenesis and release of exosomes. We also demonstrate that PrPC packaging is dependent on nSMase2, whereas the packaging of disease-associated PrPSc into exosomes occurs independently of nSMase2. These findings provide further insight into prion transmission and identify a pathway which directly assists exosome-mediated transmission of prions.

Journal of Biological Chemistry published new progress about Aggregation. 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, Computed Properties of 6823-69-4.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Xu, Suowen; Jin, Tengchuan; Weng, Jianping published the artcile< Endothelial cells as a key cell type for innate immunity: a focused review on RIG-I signaling pathway>, Safety of 7H-Purin-2-amine, the main research area is review innate immunity endothelial cell signaling pathway RIGI; DDX58; RIG-I; endothelial cells; immunity; inflammation.

A review. The vascular endothelium consists of a highly heterogeneous monolayer of endothelial cells (ECs) which are the primary target for bacterial and viral infections due to EC’s constant and close contact with the bloodstream. Emerging evidence has shown that ECs are a key cell type for innate immunity. Like macrophages, ECs serve as sentinels when sensing invading pathogens or microbial infection caused by viruses and bacteria. It remains elusive how ECs senses danger signals, transduce the signal and fulfil immune functions. Retinoic acid-inducible gene-I (RIG-I, gene name also known as DDX58) is an important member of RIG-I-like receptor (RLR) family that functions as an important pathogen recognition receptor (PRR) to execute immune surveillance and confer host antiviral response. Recent studies have demonstrated that virus infection, dsRNA, dsDNA, interferons, LPS, and 25-hydroxycholesterol (25-HC) can increase RIG-1 expression in ECs and propagate anti-viral response. Of translational significance, RIG-I activation can be inhibited by Panax notoginseng saponins, endogenous PPARγ ligand 15-PGJ2, tryptanthrin and 2-animopurine. Considering the pivotal role of inflammation and innate immunity in regulating endothelial dysfunction and atherosclerosis, here we provided a concise review of the role of RIG-I in endothelial cell function and highlight future direction to elucidate the potential role of RIG-I in regulating cardiovascular diseases as well as virus infectious disease, including COVID-19. Furthered understanding of RIG-I-mediated signaling pathways is important to control disorders associated with altered immunity and inflammation in ECs.

Frontiers in Immunology published new progress about Antiviral agents. 452-06-2 belongs to class imidazoles-derivatives, and the molecular formula is C5H5N5, Safety of 7H-Purin-2-amine.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Qin, Xiaofeng; Lin, Xiaofang; Liu, Lang; Li, Ying; Li, Xiang; Deng, Zhenghao; Chen, Huiping; Chen, Hui; Niu, Zhiyuan; Li, Zisheng; Hu, Yongbin published the artcile< Macrophage-derived exosomes mediate silica-induced pulmonary fibrosis by activating fibroblast in an endoplasmic reticulum stress-dependent manner>, Related Products of 6823-69-4, the main research area is macrophage exosome proliferation migration pulmonary fibrosis endoplasmic reticulum stress; ER stress; exosomes; fibroblasts; macrophages; silicosis.

Macrophages play a key role in silicosis, and exosomes are potent mediators of intercellular communication. This suggests that macrophage-derived exosomes have a potential contribution to the pathogenesis of silicosis. To investigate whether macrophage-derived exosomes promote or inhibit lung fibrosis, in vitro, silica-exposed macrophage-derived exosomes (SiO2-Exos) were collected and cocultured with fibroblasts. The expression of collagen I and α-SMA was evaluated. Furthermore, the endoplasmic reticulum (ER) stress markers BIP, XBP1s and P-eIF2α were assessed after treatment with or without the ER stress inhibitor 4-PBA. In vivo, mice were pre-treated with the exosome secretion inhibitor GW4869 prior to silica exposure. After sacrifice, lung tissues were histol. examined, and the expression of proinflammatory cytokines (TNF-α, IL-1β and IL-6) in bronchoalveolar lavage fluid (BALF) was measured. The results showed that the expression of collagen I and α-SMA was up-regulated after treatment with SiO2-Exos, accompanied by increased expression of BIP, XBP1s and P-eIF2α. Pre-treatment with 4-PBA reversed this effect. More importantly, an in vivo study demonstrated that pre-treatment with GW4869 decreased lung fibrosis and the expression of TNF-α, IL-1β and IL-6 in BALF. These results suggested that SiO2-Exos are profibrogenic and that the facilitating effect is dependent on ER stress.

Journal of Cellular and Molecular Medicine published new progress about Animal gene Role: BSU (Biological Study, Unclassified), PRP (Properties), BIOL (Biological Study) (ACTA2). 6823-69-4 belongs to class imidazoles-derivatives, and the molecular formula is C30H30Cl2N6O2, Related Products of 6823-69-4.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Li, Yongtao; Lin, Wenwei; Wright, William C.; Chai, Sergio C.; Wu, Jing; Chen, Taosheng published the artcile< Building a Chemical Toolbox for Human Pregnane X Receptor Research: Discovery of Agonists, Inverse Agonists, and Antagonists Among Analogs Based on the Unique Chemical Scaffold of SPA70>, Synthetic Route of 1003-21-0, the main research area is pregnane X receptor agonist antagonist inverse agonist SPA70 analog.

Pregnane X receptor (PXR) plays roles in detoxification and other physiol. processes. PXR activation may enhance drug metabolism (leading to adverse drug reactions) or inhibit inflammation. Therefore, PXR agonists, antagonists, and inverse agonists may serve as research tools and drug candidates. However, a specific PXR modulator with an associated structure-activity relationship is lacking. Based on the scaffold of specific human PXR (hPXR) antagonist SPA70 (10), we developed 81 SPA70 analogs and evaluated their receptor-binding and cellular activities. Interestingly, analogs with subtle structural differences displayed divergent cellular activities, including agonistic, dual inverse agonistic and antagonistic, antagonistic, and partial agonistic/partial antagonistic activities (as in compounds 111, 10, 97, and 42, resp.). We generated a pharmacophore model that represents 81 SPA70 analogs, and docking models that correlate strong interactions between the compounds and residues in the AF-2 helix with agonistic activity. These compounds are novel chem. tools for studying hPXR.

Journal of Medicinal Chemistry published new progress about Cytotoxicity. 1003-21-0 belongs to class imidazoles-derivatives, and the molecular formula is C4H5BrN2, Synthetic Route of 1003-21-0.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem