Month: October 2022

Chartier, Magali; Desgagne, Michael; Sousbie, Marc; Rumsby, Charles; Chevillard, Lucie; Theroux, Lea; Haroune, Lounes; Cote, Jerome; Longpre, Jean-Michel; Boudreault, Pierre-Luc; Marsault, Eric; Sarret, Philippe published an article in 2021. The article was titled 《Pharmacodynamic and pharmacokinetic profiles of a neurotensin receptor type 2 (NTS2) analgesic macrocyclic analog》, and you may find the article in Biomedicine & Pharmacotherapy.Application In Synthesis of H-Trp-OMe.HCl The information in the text is summarized as follows:

The current opioid crisis highlights the urgent need to develop safe and effective pain medications. Thus, neurotensin (NT) compounds represent a promising approach, as the antinociceptive effects of NT are mediated by activation of the two G protein-coupled receptor subtypes (i.e., NTS1 and NTS2) and produce potent opioid-independent analgesia. Here, we describe the synthesis and pharmacodynamic and pharmacokinetic properties of the first constrained NTS2 macrocyclic NT(8-13) analog. The Tyr11 residue of NT(8-13) was replaced with a Trp residue to achieve NTS2 selectivity, and a rationally designed side-chain to side-chain macrocyclization reaction was applied between Lys8 and Trp11 to constrain the peptide in an active binding conformation and limit its recognition by proteolytic enzymes. The resulting macrocyclic peptide, CR-01-64, exhibited high-affinity for NTS2 (Ki 7.0 nM), with a more than 125-fold selectivity over NTS1, as well as an improved plasma stability profile (t1/2 > 24 h) compared with NT (t1/2 ∼ 2 min). Following intrathecal administration, CR-01-64 exerted dose-dependent and long-lasting analgesic effects in acute (ED50 = 4.6 μg/kg) and tonic (ED50 = 7.1 μg/kg) pain models as well as strong mech. anti-allodynic effects in the CFA-induced chronic inflammatory pain model. Of particular importance, this constrained NTS2 analog exerted potent nonopioid antinociceptive effects and potentiated opioid-induced analgesia when combined with morphine. At high doses, CR-01-64 did not cause hypothermia or ileum relaxation, although it did induce mild and short-term hypotension, all of which are physiol. effects associated with NTS1 activation. Overall, these results demonstrate the strong therapeutic potential of NTS2-selective analogs for the management of pain. In the experiment, the researchers used H-Trp-OMe.HCl(cas: 7524-52-9Application In Synthesis of H-Trp-OMe.HCl)

H-Trp-OMe.HCl(cas:7524-52-9) is one of amino acid derivatives. Amino acid derivatives represent an important category of skin penetration promoters. These compounds possess hydrophobic chains attached to an amino acid headgroup via a biodegradable ester bond. Due to the amphiphilic nature of these derivatives, it is possible for them to enter into the SC lipid barrier and significantly disorganize skin membrane lipids.Application In Synthesis of H-Trp-OMe.HCl

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Hibbard, Jason P.; Yam, Jessalyn G.; Alsalek, Eyad B.; Bahamonde, Ana published an article in 2022. The article was titled 《Mild Sustainable Amide Alkylation Protocol Enables a Broad Orthogonal Scope》, and you may find the article in Journal of Organic Chemistry.Product Details of 4248-19-5 The information in the text is summarized as follows:

The development of a mild sustainable protocol to couple primary alkyl chlorides and bromides with amides was described. In contrast to current methodologies, this system does not require the use of strongly basic conditions, high temperatures or the addition of an organometallic catalyst, thereby enabling access to a remarkably orthogonal scope. K3PO4 was used to facilitate the formation of secondary and tertiary amides, which was ubiquitous scaffolds in bioactive mols. and natural products. Alkylated amide products were obtained in good to excellent yields, with no substantial limitations observed based on the steric and electronic properties of either coupling partner. In addition to this study using tert-Butyl carbamate, there are many other studies that have used tert-Butyl carbamate(cas: 4248-19-5Product Details of 4248-19-5) was used in this study.

tert-Butyl carbamate(cas: 4248-19-5) belongs to anime. Nitrous acid converts secondary amines (aliphatic or aromatic) to N-nitroso compounds (nitrosamines): R2NH + HNO2 → R2N―NO. Some nitrosamines are potent cancer-inducing substances, and their possible formation is a serious consideration when nitrites, which are salts of nitrous acid, are present in foods or pharmaceutical preparations. Tertiary amines give rise to nitrosamines more slowly; an alkyl group is eliminated as an aldehyde or ketone, along with nitrous oxide, N2O.Product Details of 4248-19-5

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 2022,Parhizi, Mohammad; Caceres-Martinez, Louis Edwards; Modereger, Brent A.; Kenttamaa, Hilkka I.; Kilaz, Gozdem; Ostanek, Jason K. published an article in Energies (Basel, Switzerland). The title of the article was 《Determining the Composition of Carbonate Solvent Systems Used in Lithium-Ion Batteries without Salt Removal》.SDS of cas: 872-36-6 The author mentioned the following in the article:

In this work, two methods were investigated for determining the composition of carbonate solvent systems used in lithium-ion (Li-ion) battery electrolytes. One method was based on comprehensive two-dimensional gas chromatog. with electron ionization time-of-flight mass spectrometry (GCxGC/EI TOF MS), which often enables unknown compound identification by their electron ionization (EI) mass spectra. The other method was based on comprehensive two-dimensional gas chromatog. with flame ionization detection (GCxGC/FID). Both methods were used to determine the concentrations of six different commonly used carbonates in Li-ion battery electrolytes i.e., ethylene carbonate (EC), propylene carbonate (PC), di-Me carbonate (DMC), di-Et carbonate (DEC), Et Me carbonate (EMC), and vinylene carbonate (VC) in model compound mixtures (MCMs), single-blind samples (SBS), and a com. obtained electrolyte solution (COES). Both methods were found to be precise (uncertainty < 5%), accurate (error < 5%), and sensitive (limit of detection <0.12 ppm for FID and <2.7 ppm for MS). Furthermore, unlike the previously reported methods, these methods do not require removing lithium hexafluorophosphate salt (LiPF6) from the sample prior to anal. Removal of the lithium salt was avoided by diluting the electrolyte solutions prior to anal. (1000-fold dilution) and using minimal sample volumes (0.1μL) for anal. In the experiment, the researchers used many compounds, for example, Vinylene carbonate(cas: 872-36-6SDS of cas: 872-36-6)

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.SDS of cas: 872-36-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 2022,Smith, Alasdair; Wall, Richard J.; Patterson, Stephen; Rowan, Tim; Rico Vidal, Eva; Stojanovski, Laste; Huggett, Margaret; Hampton, Shahienaz E.; Thomas, Michael G.; Corpas Lopez, Victoriano; Gillingwater, Kirsten; Duke, Jeff; Napier, Grant; Peter, Rose; Vitouley, Herve S.; Harrison, Justin R.; Milne, Rachel; Jeacock, Laura; Baker, Nicola; Davis, Susan H.; Simeons, Frederick; Riley, Jennifer; Horn, David; Brun, Reto; Zuccotto, Fabio; Witty, Michael J.; Wyllie, Susan; Read, Kevin D.; Gilbert, Ian H. published an article in Journal of Medicinal Chemistry. The title of the article was 《Repositioning of a Diaminothiazole Series Confirmed to Target the Cyclin-Dependent Kinase CRK12 for Use in the Treatment of African Animal Trypanosomiasis》.SDS of cas: 4248-19-5 The author mentioned the following in the article:

African animal trypanosomiasis or nagana, caused principally by infection of the protozoan parasites Trypanosoma congolense and Trypanosoma vivax, is a major problem in cattle and other livestocks in sub-Saharan Africa. Current treatments are threatened by the emergence of drug resistance and there is an urgent need for new, effective drugs. Here, we report the repositioning of a compound series initially developed for the treatment of human African trypanosomiasis. A medicinal chem. program, focused on deriving more soluble analogs, led to development of a lead compound capable of curing cattle infected with both T. congolense and T. vivax via i.v. dosing. Further optimization has the potential to yield a single-dose i.m. treatment for this disease. Comprehensive mode of action studies revealed that the mol. target of this promising compound and related analogs is the cyclin-dependent kinase CRK12. In the part of experimental materials, we found many familiar compounds, such as tert-Butyl carbamate(cas: 4248-19-5SDS of cas: 4248-19-5)

tert-Butyl carbamate(cas: 4248-19-5) belongs to anime. Aniline, ethanolamines, and several other amines are major industrial commodities used in making rubber, dyes, pharmaceuticals, and synthetic resins and fibres and for a host of other applications. Most of the numerous methods for the preparation of amines may be broadly divided into two groups: (1) chemical reduction (replacement of oxygen with hydrogen atoms in the molecule) of members of several other classes of organic nitrogen compounds and (2) reactions of ammonia or amines with organic compounds.SDS of cas: 4248-19-5

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 2022,Henning, Nathaniel J.; Boike, Lydia; Spradlin, Jessica N.; Ward, Carl C.; Liu, Gang; Zhang, Erika; Belcher, Bridget P.; Brittain, Scott M.; Hesse, Matthew J.; Dovala, Dustin; McGregor, Lynn M.; Valdez Misiolek, Rachel; Plasschaert, Lindsey W.; Rowlands, David J.; Wang, Feng; Frank, Andreas O.; Fuller, Daniel; Estes, Abigail R.; Randal, Katelyn L.; Panidapu, Anoohya; McKenna, Jeffrey M.; Tallarico, John A.; Schirle, Markus; Nomura, Daniel K. published an article in Nature Chemical Biology. The title of the article was 《Deubiquitinase-targeting chimeras for targeted protein stabilization》.Related Products of 51644-96-3 The author mentioned the following in the article:

Many diseases are driven by proteins that are aberrantly ubiquitinated and degraded. These diseases would be therapeutically benefited by targeted protein stabilization (TPS). Here we present deubiquitinase-targeting chimeras (DUBTACs), heterobifunctional small mols. consisting of a deubiquitinase recruiter linked to a protein-targeting ligand, to stabilize the levels of specific proteins degraded in a ubiquitin-dependent manner. Using chemoproteomic approaches, we discovered the covalent ligand EN523 that targets a non-catalytic allosteric cysteine C23 in the K48-ubiquitin-specific deubiquitinase OTUB1. We showed that a DUBTAC consisting of our EN523 OTUB1 recruiter linked to lumacaftor, a drug used to treat cystic fibrosis that binds ΔF508-cystic fibrosis transmembrane conductance regulator (CFTR), robustly stabilized ΔF508-CFTR protein levels, leading to improved chloride channel conductance in human cystic fibrosis bronchial epithelial cells. We also demonstrated stabilization of the tumor suppressor kinase WEE1 in hepatoma cells. Our study showcases covalent chemoproteomic approaches to develop new induced proximity-based therapeutic modalities and introduces the DUBTAC platform for TPS. [graphic not available: see fulltext] After reading the article, we found that the author used tert-Butyl (5-aminopentyl)carbamate(cas: 51644-96-3Related Products of 51644-96-3)

Some of the reported applications of tert-Butyl (5-aminopentyl)carbamate(cas: 51644-96-3) include: synthesis of of a supermacrocycle that self-assemble to form organic nanotubes., preparation of water-soluble unsymmetrical sulforhodamine fluorophores from monobrominated sulfoxanthene dye, synthesis of functionalized porphyrins as biocompatible carrier system for photodynamic therapy (PDT).Related Products of 51644-96-3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 2022,Zhang, Xin-Ke; Miao, Xiao-Yu; Zhou, Yu; Wang, Yu-Mei; Song, Ying-Chun; Liu, Hang; Xiong, Yi-Lu; Li, Ling-Yu; Wu, An-Xin; Zhu, Yan-Ping published an article in Organic & Biomolecular Chemistry. The title of the article was 《Iodine-catalyzed oxidative annulation: facile synthesis of pyrazolooxepinopyrazolones via methyl azaarene sp3 C-H functionalization》.Recommanded Product: 4949-44-4 The author mentioned the following in the article:

An iodine-catalyzed Me azaarene sp3 C-H functionalization has been developed for the synthesis of a seven-membered O-heterocyclic architecture containing three different heterocyclic aromatic hydrocarbons. This method can be applied to a wide range of substituted Me azaarenes and diverse 2,4-dihydro-3H-pyrazol-3-ones, and brings about the efficient preparation of 2,9-dihydrooxepino[2,3-c:6,5-c’]dipyrazol-3(7H)-ones in high yields with the merits of low catalyst loading, good functional group tolerance and metal-free conditions.Ethyl 3-oxopentanoate(cas: 4949-44-4Recommanded Product: 4949-44-4) was used in this study.

Ethyl 3-oxopentanoate(cas: 4949-44-4) belongs to ketone compounds. Ketones are highly reactive, although less so than aldehydes, to which they are closely related. Much of their chemical activity results from the nature of the carbonyl group. Ketones readily undergo a wide variety of chemical reactions.Recommanded Product: 4949-44-4

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Name: tert-Butyl (5-aminopentyl)carbamateIn 2016 ,《Purine-Type Compounds Induce Microtubule Fragmentation and Lung Cancer Cell Death through Interaction with Katanin》 appeared in Journal of Medicinal Chemistry. The author of the article were Kuo, Ting-Chun; Li, Ling-Wei; Pan, Szu-Hua; Fang, Jim-Min; Liu, Jyung-Hurng; Cheng, Ting-Jen; Wang, Chia-Jen; Hung, Pei-Fang; Chen, Hsuan-Yu; Hong, Tse-Ming; Hsu, Yuan-Ling; Wong, Chi-Huey; Yang, Pan-Chyr. The article conveys some information:

Microtubule targeting agents (MTAs) constitute a class of drugs for cancer treatment. Despite many MTAs have been proven to significantly improve the treatment outcomes of various malignancies, resistance has usually occurred. By selection from a 2-million entry chem. library based on the efficacy and safety, the authors identified purine-type compounds that were active against lung small cell lung cancer (NSCLC). The purine compound I (GRC0321) was an MTA with good effects against NSCLC. Lung cancer cells H1975 treated with I could induce microtubule fragmentation, leading to G2/M cell cycle arrest and intrinsic apoptosis. Compound I directly targeted katanin and regulated the severing activity of katanin, which cut the cellular microtubules into short pieces and activated c-Jun N-terminal kinases (JNK). The microtubule fragmenting effect of I is a unique mechanism in MTAs. It might overcome the resistance problems that most of the MTAs have faced. In the experimental materials used by the author, we found tert-Butyl (5-aminopentyl)carbamate(cas: 51644-96-3Name: tert-Butyl (5-aminopentyl)carbamate)

Some of the reported applications of tert-Butyl (5-aminopentyl)carbamate(cas: 51644-96-3) include: synthesis of of a supermacrocycle that self-assemble to form organic nanotubes., preparation of water-soluble unsymmetrical sulforhodamine fluorophores from monobrominated sulfoxanthene dye, synthesis of functionalized porphyrins as biocompatible carrier system for photodynamic therapy (PDT).Name: tert-Butyl (5-aminopentyl)carbamate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

COA of Formula: C4H5ClO3In 2019 ,《Design, synthesis and biological activities of new pyrazole derivatives possessing both coxib and combretastatins pharmacophores》 appeared in Chemistry & Biodiversity. The author of the article were Thi, Thuy Hang Nguyen; Thi, Yen Tran; Nguyen, Le Anh; Vo, Ngoc Binh; Ngo, Quoc Anh. The article conveys some information:

In our efforts to discover novel multi-target agents having better antitumor activities than celecoxib, 21 new aryl-substituted pyrazole derivatives possessing cis-diphenylethylene scaffold were mostly synthesized by a one-pot approach to Et 1,4,5-triaryl-1H-pyrazole-3-carboxylates via an improved Claisen condensation – Knorr reaction sequence. The cytotoxic effects of these compounds against three human cancer cell lines HT-29, Hep-G2, MCF-7 as well as their inhibition of NO production were studied. Results showed that incorporation of the important pharmacophoric groups of two original mols. celecoxib and combretastatin A-4 in a single mol. plays an important role in determining a better biol. activities of the new coxib-hybrided compounds In the experimental materials used by the author, we found Ethyl oxalyl monochloride(cas: 4755-77-5COA of Formula: C4H5ClO3)

Ethyl oxalyl monochloride(cas: 4755-77-5) belongs to acyl chlorides. Lacking the ability to form hydrogen bonds, acyl chlorides have lower boiling and melting points than similar carboxylic acids. For example, acetic acid boils at 118 °C, whereas acetyl chloride boils at 51 °C. Like most carbonyl compounds, infrared spectroscopy reveals a band near 1750 cm−1.COA of Formula: C4H5ClO3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics