Month: October 2022

In 2015,Liu, Gang; Abraham, Sunny; Liu, Xing; Xu, Shimin; Rooks, Allison M.; Nepomuceno, Ron; Dao, Alan; Brigham, Daniel; Gitnick, Dana; Insko, Darren E.; Gardner, Michael F.; Zarrinkar, Patrick P.; Christopher, Ron; Belli, Barbara; Armstrong, Robert C.; Holladay, Mark W. published 《Discovery and optimization of a highly efficacious class of 5-aryl-2-aminopyridines as FMS-like tyrosine kinase 3 (FLT3) inhibitors》.Bioorganic & Medicinal Chemistry Letters published the findings.Synthetic Route of C3H3BrN2S The information in the text is summarized as follows:

Based on a putative binding mode of quizartinib, a potent FMS-like tyrosine kinase 3 (FLT3) inhibitor in Phase III clin. development, the authors have designed de novo a simpler aminopyridine-based hinge binding motif. Further optimization focusing on maximizing in vivo efficacy and minimizing CYP3A4 time-dependent inhibition resulted in a highly efficacious compound I in tumor xenograft model for further preclin. development. The experimental process involved the reaction of 5-Bromothiazol-2-amine(cas: 3034-22-8Synthetic Route of C3H3BrN2S)

5-Bromothiazol-2-amine(cas: 3034-22-8) belongs to anime. Large quantities of aliphatic amines are made synthetically. The most widely used industrial method is the reaction of alcohols with ammonia at a high temperature, catalyzed by metals or metal oxide catalysts (e.g., nickel or copper). Mixtures of primary, secondary, and tertiary amines are thereby produced.Synthetic Route of C3H3BrN2S

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Category: thiazoleOn May 11, 2020 ,《Label-free colorimetric detection of acid phosphatase and screening of its inhibitors based on biomimetic oxidase activity of MnO2 nanosheets》 appeared in ACS Biomaterials Science & Engineering. The author of the article were Wang, Jing; Lu, Qiaoyun; Weng, Chenyuan; Li, Xiaoyun; Yan, Xiaoqiang; Yang, Wei; Li, Bingzhi; Zhou, Xuemin. The article conveys some information:

In this research, we attempted to develop a sensitive colorimetric sensing strategy for the detection of acid phosphatase (ACP) based on MnO2 nanosheets and explored its applications in screening and evaluating inhibitors of ACP. The MnO2 nanosheets exhibit intrinsic biomimetic oxidase activity, which can catalyze the oxidation of the colorless 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonate) diammonium salt (ABTS) into green oxidized ABTS (oxABTS). Upon the introduction of ACP, L-ascorbic acid-2-phosphate can be dephosphorylated to ascorbic acid, which arouses the disintegration of MnO2 nanosheets into Mn2+ ions. This disintegration weakens the enzyme mimicking activity of the MnO2 nanosheets, leading to the impediment of the oxidation of ABTS. Conversely, in the absence of ACP, the ABTS is rapidly oxidized by MnO2, leading to a significant colorimetric signal change. The absorbance difference at 420 nm displayed a linear relationship with the concentration of ACP ranging from 0.075 to 0.45 mU·mL-1, generating a detection limit of 0.046 mU·mL-1. In the inhibition assays, this sensing platform provided simple detection for parathion-Me (PM), a representative inhibitor of ACP. The facile evaluation of the inhibitory effect of PM, including its IC50 toward ACP, was also realized. The experimental part of the paper was very detailed, including the reaction process of ABTS Diammonium(cas: 30931-67-0Category: thiazole)

ABTS Diammonium(cas: 30931-67-0) belongs to anime. Milder oxidation, using reagents such as NaOCl, can remove four hydrogen atoms from primary amines of the type RCH2NH2 to form nitriles (R―C≡N), and oxidation with reagents such as MnO2 can remove two hydrogen atoms from secondary amines (R2CH―NHR′) to form imines (R2C=NR′). Tertiary amines can be oxidized to enamines (R2C=CHNR2) by a variety of reagents.Category: thiazole

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Computed Properties of C7H5ClN2SOn May 31, 2020, Acar Cevik, Ulviye; Osmaniye, Derya; Saglik, Beguem N.; Levent, Serkan; Cavusoglu, Betuel K.; Karaduman, Abdullah B.; Oekay, Uemide D.; Ozkay, Yusuf; Kaplancikli, Zafer A.; Turan, Guelhan published an article in Journal of Heterocyclic Chemistry. The article was 《Synthesis of new benzothiazole derivatives bearing thiadiazole as monoamine oxidase inhibitors》. The article mentions the following:

In this study, a novel series of benzothiazole-thiadiazole I (R1 = Et, methoxyethyl, n-Pr, n-Bu; R2 = H, Cl, NO2) was synthesized. These compounds I were evaluated as inhibitors for types A and B MAO enzymes. Compounds I [(A), R1 = methoxyethyl, R2 = NO2; R1 = n-Bu, R2 = NO2, (B)] were the most active derivatives in the series with IC50 values of 0.107 ± 0.003 and 0.128 ± 0.004, resp. Furthermore, compounds (A) and (B) were investigated for their cytotoxicity and found as non-cytotoxic. After reading the article, we found that the author used 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Computed Properties of C7H5ClN2S)

6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9) belongs to thiazoles. Thiazoles are a class of five-membered rings containing nitrogen and sulfur with excellent antitumor, antiviral and antibiotic activities.Computed Properties of C7H5ClN2SThiazoles can also be used as protected formyl groups, which can be released in later stages of complex natural product synthesis.

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Recommanded Product: 6-Chlorobenzothiazol-2-ylamineOn March 12, 2020, Zaldivar-Diez, Josefa; Li, Lingling; Garcia, Ana M.; Zhao, Wen-Ning; Medina-Menendez, Cristina; Haggarty, Stephen. J.; Gil, Carmen; Morales, Aixa V.; Martinez, Ana published an article in Journal of Medicinal Chemistry. The article was 《Benzothiazole-Based LRRK2 Inhibitors as Wnt Enhancers and Promoters of Oligodendrocytic Fate》. The article mentions the following:

Leucine rich repeat kinase 2 (LRRK2) is an enigmatic enzyme and a relevant target for Parkinson’s disease (PD). However, despite the significant amount of research done in the past decade, the precise function of LRRK2 remains largely unknown. Moreover, the therapeutic potential of its inhibitors is in its infancy with the first clin. trial having just started. In the present work, the mol. mechanism of LRRK2 in the control of neurogenesis or gliogenesis was investigated. We designed and synthesized novel benzothiazole-based LRRK2 inhibitors and showed that they can modulate the Wnt/β-catenin signaling pathway. Furthermore, compounds I and II were able to promote neural progenitors proliferation and drive their differentiation toward neuronal and oligodendrocytic cell fates. These results suggest potential new avenues for the application of LRRK2 inhibitors in demyelinating diseases in which oligodendrocyte cell-death is one of the pathol. features. In the part of experimental materials, we found many familiar compounds, such as 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Recommanded Product: 6-Chlorobenzothiazol-2-ylamine)

6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9) belongs to thiazoles. Thiazoles are a class of five-membered rings containing nitrogen and sulfur with excellent antitumor, antiviral and antibiotic activities.Recommanded Product: 6-Chlorobenzothiazol-2-ylamineThiazoles can also be used as protected formyl groups, which can be released in later stages of complex natural product synthesis.

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Sillero, Leyre; Prado, Raquel; Welton, Tom; Labidi, Jalel published their research in Sustainable Chemistry and Pharmacy on December 31 ,2021. The article was titled 《Extraction of flavonoid compounds from bark using sustainable deep eutectic solvents》.Application of 30931-67-0 The article contains the following contents:

The use of green solvents in extraction processes, especially for applications of lignocellulosic biomass, has been extensively studied over the last years. Among the range of different green solvents, deep eutectic solvents (DES) show promising results for extraction processes. Therefore, the aim of this work was the use of DES as additives in aqueous mixtures for the selective extraction of flavonoid compounds from the bark of Larix decidua. For this purpose, bark has been treated using different solvent ratios consisting of a DES/H2O mixture (0, 25, 50 and 75 wt%). Two DES were studied, choline chloride:urea and choline chloride:1,4-butanediol. In order to study the success of the extractions, the extracts and the remaining solid fraction were characterized. From the results, it was concluded that the choline chloride:1,4-butanediol (75 wt%) gave the best results, obtaining the richest extracts in flavonoids (383 mg CE/g dried bark extract), as well as those with the highest antioxidant capacity. These good results confirm the capacity of this DES to obtain active biomols. for further application. In the experiment, the researchers used many compounds, for example, ABTS Diammonium(cas: 30931-67-0Application of 30931-67-0)

ABTS Diammonium(cas: 30931-67-0) belongs to anime. Primary amines having a tertiary alkyl group (R3CNH2) are difficult to prepare with most methods but are made industrially by the Ritter reaction. In this method a tertiary alcohol reacts with hydrogen cyanide (HCN) in the presence of a concentrated strong acid; a formamide, RNH―CHO, is formed first, which then undergoes hydrolysis.Application of 30931-67-0

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

In 2004,Quelever, Gilles; Burlet, Stephane; Garino, Cedrik; Pietrancosta, Nicolas; Laras, Younes; Kraus, Jean-Louis published 《Simple Coupling Reaction between Amino Acids and Weakly Nucleophilic Heteroaromatic Amines》.Journal of Combinatorial Chemistry published the findings.HPLC of Formula: 3034-22-8 The information in the text is summarized as follows:

Solution-phase amidation of amino acid Boc-Ala-OH by substituted, weakly nucleophilic heterocyclic aromatic amines was studied in presence of coupling reagents using a parallel synthesis procedure. Coupling agents POCl3/pyridine, BOP, DCC/HOBt, and HBTU were examined for this reaction. Thus, Boc-Ala-NHAr [Ar = CH2C6H4NO2-4, CH2Ph, CH2C6H11, 4-(4-nitrophenyl)-2-thiazolyl, 5-bromo-2-thiazolyl, 2-thiazolyl, 5-nitro-2-thiazolyl] were prepared in moderate to high yields. The results showed that when bulky, weakly nucleophilic, heterocyclic aromatic amines are to be coupled, POCl3 in pyridine could be used as a coupling agent in solution-phase automated synthesis for obtaining racemization-free products in reasonable good yields. In the experiment, the researchers used many compounds, for example, 5-Bromothiazol-2-amine(cas: 3034-22-8HPLC of Formula: 3034-22-8)

5-Bromothiazol-2-amine(cas: 3034-22-8) belongs to anime. Reaction with nitrous acid (HNO2), which functions as an acylating agent that is a source of the nitrosyl group (―NO), converts aliphatic primary amines to nitrogen and mixtures of alkenes and alcohols corresponding to the alkyl group in a complex process. This reaction has been used for analytical determination of primary amino groups in a procedure known as the Van Slyke method.HPLC of Formula: 3034-22-8

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Application of 3034-22-8In 2017 ,《In vitro studies on the inhibition of colon cancer by amino acid derivatives of bromothiazole》 was published in Bioorganic & Medicinal Chemistry Letters. The article was written by Vale, Nuno; Correia-Branco, Ana; Patricio, Barbara; Duarte, Diana; Martel, Fatima. The article contains the following contents:

The investment in cancer research is critical to find more and better treatments, but essentially to save lives. This paper describes the synthesis and characterization of bromothiazole derivatives with amino acids, e.g., I, and with core of nitazoxanide, an FDA-approved antiprotozoal drug. Using a human adenocarcinoma-derived cell line (the Caco-2 cell line), the antiproliferative (3H-thymidine incorporation) and cytotoxic (extracellular lactate dehydrogenase activity) effect of these derivatives, were investigated. All the derivatives caused a concentration-dependent decrease in cell proliferation and viability. At their highest concentration, all compounds were able to reduce 3H-thymidine incorporation by more than 80%, corresponding to a more marked antiproliferative effect than butyrate. As to their cytotoxic effect, it was comparable to that of butyrate. The ability of bromo substituent in thiazole ring with sequences of amino acids in inducing cell death and apoptosis in Caco-2 cells (and other cell lines) is now being studied. The experimental part of the paper was very detailed, including the reaction process of 5-Bromothiazol-2-amine(cas: 3034-22-8Application of 3034-22-8)

5-Bromothiazol-2-amine(cas: 3034-22-8) belongs to anime.Typically the presence of an amine functional group is deduced by a combination of techniques, including mass spectrometry as well as NMR and IR spectroscopies. 1H NMR signals for amines disappear upon treatment of the sample with D2O. In their infrared spectrum primary amines exhibit two N-H bands, whereas secondary amines exhibit only one.Application of 3034-22-8

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

SDS of cas: 3034-22-8In 2011 ,《Synthesis and application of a new thiazolylazo reagent for cloud point extraction and determination of cobalt in pharmaceutical preparations》 was published in Journal of AOAC International. The article was written by Yamaki, Regina Terumi; Nunes, Luana Sena; Rodrigues de Oliveira, Hygor; Araujo, Andre S.; Bezerra, Marcos Almeida; Lemos, Valfredo Azevedo. The article contains the following contents:

The synthesis and characterization of the reagent 2-(5-bromothiazolylazo)-4-chlorophenol (I) and its application in the development of a preconcentration procedure for cobalt determination using flame at. absorption spectrometry after cloud point extraction is presented. This procedure is based on cobalt complexing and entrapment of the metal chelates into micelles of a surfactant-rich phase of Triton X-114. The preconcentration procedure was optimized by using a response surface methodol. through the application of the Box-Behnken matrix. Under optimum conditions, the procedure determined the presence of cobalt with an LOD of 2.8 μg/L and LOQ of 9.3 μg/L. The enrichment factor obtained was 25. The precision was evaluated as the RSD, which was 5.5% for 10 μg/L cobalt and 6.9% for 30 μg/L. The accuracy of the procedure was assessed by comparing the results with those found using inductively coupled plasma-optical emission spectrometry. After validation, the procedure was applied to the determination of cobalt in pharmaceutical preparation samples containing cobalamin (vitamin B12). After reading the article, we found that the author used 5-Bromothiazol-2-amine(cas: 3034-22-8SDS of cas: 3034-22-8)

5-Bromothiazol-2-amine(cas: 3034-22-8) belongs to anime. Large quantities of aliphatic amines are made synthetically. The most widely used industrial method is the reaction of alcohols with ammonia at a high temperature, catalyzed by metals or metal oxide catalysts (e.g., nickel or copper). Mixtures of primary, secondary, and tertiary amines are thereby produced.SDS of cas: 3034-22-8

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Reference of 2-Bromo-6-fluorobenzothiazoleOn October 9, 2003 ,《Design and synthesis of pyrrolidine-5,5′-trans-lactams (5-oxo-hexahydropyrrolo[3,2-b]pyrroles) as novel mechanism-based inhibitors of human cytomegalovirus protease. 4. Antiviral activity and plasma stability》 was published in Journal of Medicinal Chemistry. The article was written by Borthwick, Alan D.; Davies, Dave E.; Ertl, Peter F.; Exall, Anne M.; Haley, Terry M.; Hart, Graham J.; Jackson, Deborah L.; Parry, Nigel R.; Patikis, Angela; Trivedi, Naimisha; Weingarten, Gordon G.; Woolven, James M.. The article contains the following contents:

A series of chiral, (S)-proline-α-methylpyrrolidine-5,5-trans-lactam serine protease inhibitors has been developed as antivirals of human cytomegalovirus (HCMV). The SAR of the functionality on the proline nitrogen has shown that derivatives of para-substituted Ph ureas > para-substituted Ph sulfonamides > para-substituted Ph carboxamide for activity against HCMV δAla protease, producing para-substituted Ph ureas with single figure nM potency (Ki) against the viral enzyme. The SAR of the functionality on the lactam nitrogen has defined the steric and electronic requirements for high human plasma stability while retaining good activity against HCMV protease. The combination of high potency against HCMV δAla protease and high human plasma stability has produced compounds with significant in vitro antiviral activity against human cytomegalovirus with the 6-hydroxymethyl benzothiazole derivative 72 being equivalent in potency to ganciclovir. The parent benzothiazole 56 had good pharmacokinetics in dogs with 29% bioavailability and good brain and ocular penetration in guinea pigs. The experimental part of the paper was very detailed, including the reaction process of 2-Bromo-6-fluorobenzothiazole(cas: 152937-04-7Reference of 2-Bromo-6-fluorobenzothiazole)

2-Bromo-6-fluorobenzothiazole(cas: 152937-04-7) belongs to thiazoles. Thiazoles are a class of five-membered rings containing nitrogen and sulfur with excellent antitumor, antiviral and antibiotic activities.Reference of 2-Bromo-6-fluorobenzothiazoleTheir presence in peptides or their ability to bind proteins, DNA and RNA has led to many synthetic studies and new applications.

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Recommanded Product: ABTS DiammoniumOn March 4, 2020, Gaikwad, Adwait; Hlushko, Hanna; Karimineghlani, Parvin; Selin, Victor; Sukhishvili, Svetlana A. published an article in ACS Applied Materials & Interfaces. The article was 《Hydrogen-Bonded, Mechanically Strong Nanofibers with Tunable Antioxidant Activity》. The article mentions the following:

We report on mech. strong, water-insoluble hydrogen-bonded nanofiber mats composed of a hydrophilic polymer and a natural polyphenol that exhibit prolonged antioxidant activity. The high performance of fibrous mats resulted from the formation of a network of hydrogen bonds between a low-mol.-weight polyphenol (tannic acid, TA) and a water-soluble polymer (polyvinylpyrrolidone, PVP) and could be precisely controlled by the TA-to-PVP ratio. Dramatic enhancement (5- to 10-fold) in tensile strength, toughness, and Young’s moduli of the PVP/TA fiber mats (as compared to those of pristine PVP fibers) was achieved at the maximum d. of hydrogen bonds, which occurred at ∼0.2-0.4 M fractions of TA. The formation of hydrogen bonds was confirmed by an increase in the glass-transition temperature of the polymer after binding with TA. When exposed to water, the fibers exhibited composition- and pH-dependent stabilities, with the TA-enriched fibers fully preserving their integrity in acidic and neutral media. Importantly, the fiber mats exhibited strong antioxidant activity with dual (burst and prolonged) activity profiles, which could be controlled via fiber composition, a feature useful for controlling radical-scavenging rates in environmental and biol. applications. In addition to this study using ABTS Diammonium, there are many other studies that have used ABTS Diammonium(cas: 30931-67-0Recommanded Product: ABTS Diammonium) was used in this study.

ABTS Diammonium(cas: 30931-67-0) belongs to anime. Amines can be classified according to the nature and number of substituents on nitrogen. Aliphatic amines contain only H and alkyl substituents. Aromatic amines have the nitrogen atom connected to an aromatic ring.Important amines include amino acids, biogenic amines, trimethylamine, and aniline. Inorganic derivatives of ammonia are also called amines, such as monochloramine (NClH2).Recommanded Product: ABTS Diammonium

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica