Month: October 2022

Reference of 6-Morpholinobenzo[d]thiazol-2-amineOn October 30, 2014 ,《Design, synthesis, and structure-activity relationships of novel benzothiazole derivatives bearing the ortho-hydroxy N-carbamoylhydrazone moiety as potent antitumor agents》 was published in European Journal of Medicinal Chemistry. The article was written by Ma, Junjie; Chen, Dong; Lu, Kuan; Wang, Lihui; Han, Xiaoqi; Zhao, Yanfang; Gong, Ping. The article contains the following contents:

A series of novel benzothiazole derivatives bearing the ortho-hydroxy N-carbamoylhydrazone moiety were designed and synthesized and their cytotoxic activities against five cancer cell lines (NCI-H226, SK-N-SH, HT29, MKN45, and MDA-MB-231) were screened in vitro. Most of them showed moderate to excellent activity against all the tested cell lines. Two compounds (procaspase-3 EC50 = 1.42 μM and procaspase-3 EC50 = 0.25 μM) exhibited excellent antitumor activity with IC50 values ranging from 0.14 μM to 0.98 μM against all cancer cell lines, which were 1.8-8.7 times more active than the first procaspase activating compound (PAC-1) (procaspase-3 EC50 = 4.08 μM). The structure-activity relationship analyses indicated that the introduction of a lipophilic group (a benzyloxy or heteroaryloxy group) at the 4-position of the 2-hydroxyphenyl ring was beneficial to antitumor activity, and the presence of substituents containing nitrogen that are pos. charged at physiol. pH could also improve antitumor activity. It was also confirmed that the steric effect of the 4-position substituent of the benzyloxy group had a significant influence on cytotoxic activity.6-Morpholinobenzo[d]thiazol-2-amine(cas: 94641-22-2Reference of 6-Morpholinobenzo[d]thiazol-2-amine) was used in this study.

6-Morpholinobenzo[d]thiazol-2-amine(cas: 94641-22-2) belongs to thiazoles. Thiazoles are a class of five-membered rings containing nitrogen and sulfur with excellent antitumor, antiviral and antibiotic activities.Reference of 6-Morpholinobenzo[d]thiazol-2-amineTheir 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: 95-24-9On March 15, 2021, Al-Janabi, Ahmed S. M.; Elzupir, Amin O.; Yousef, Tarek A. published an article in Journal of Molecular Structure. The article was 《Synthesis, anti-bacterial evaluation, DFT study and molecular docking as a potential 3-chymotrypsin-like protease (3CLpro) of SARS-CoV-2 inhibitors of a novel Schiff bases》. The article mentions the following:

New Schiff bases (L1H) I (I), (L2H) II (II), (L3H) III (III) were synthesized by reaction of 2-benzoylpyridine with different amines (2-amino-6-chlorobenzothiazole, isonicotinohydrazide and N1-(naphthalen-1-yl)ethane-1,2-diamine) and characterized by 1H-NMR, 13C-NMR, IR mass spectroscopy and elemental anal. The compounds (I), (II) and (III) were assayed by the disk diffusion method for anti-bacterial against five pathogenic bacteria species (Staphylococcus aureus, Micrococcus luteus, Staphylococcus pyogenes, Bacillus subtilis, and E. coli). All prepared Schiff bases (I), (II) and (III) showed good activity compared to pos. control (streptomycin). Moreover the L3H showed the highest activity against S. aureus, and M. luteus than the other compounds and streptomycin. In addnl. mol. docking studies with 3-chymotrypsin-like protease (3CLpro), the essential enzyme for SARS-CoV-2 proliferation. The rest of compounds have shown promising results as 3CLpro inhibitors interacting with the active sites of the enzymes. Finally, DFT’s estimated electrostatic mol. potential results were used to illustrate the mol. docking findings. The DFT calculations showed that L3H has the highest dipole moment and electrophilicity index. Interestingly, L2H of the largest energy gap ΔE = 2.49 eV, there are several hydrophilic interactions that could facilitate the binding with the receptors. All of these parameters could be shared to significantly affect the protein sites of binding affinity with different extent. In the experiment, the researchers used 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Recommanded Product: 95-24-9)

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: 95-24-9Thiazoles 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

Agarwal, Charu; Hofmann, Tamas; Pasztory, Zoltan published their research in Chemical Engineering and Processing on February 28 ,2021. The article was titled 《Low-frequency, green sonoextraction of antioxidants from tree barks of Hungarian woodlands for potential food applications》.Reference of ABTS Diammonium The article contains the following contents:

The present work evaluates and compares the antioxidant capacities of bioactive constituents in the barks of ten common wood species from Hungary (Quercus rubra, Prunus serotina, Quercus robur, Betula pendula, Fraxinus excelsior, Robinia pseudoacacia, Carpinus betulus, Picea abies, Alnus glutinosa, Pinus sylvestris). Low-frequency ultrasound was used for intensification of extraction from the bark to obtain extracts rich in polyphenolic antioxidants with potential applications in the food industry. The extractions were carried out in different aqueous organic solvents- ethanol 80% and acetone 80% at optimized conditions. The overall antioxidant capacity of the extracts was estimated by the combined evaluation of Folin-Ciocalteu total phenol content (TPC), 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and ferric reducing ability of plasma (FRAP) assays using a scoring system. Aqueous ethanol had better extraction efficiency than aqueous acetone as a solvent medium. Of all the investigated species, Quercus robur showed the maximum antioxidant capacity with TPC of 105.88 ± 17.75 mg GAE/g dw, DPPH (IC50) of 1.90 ± 0.10μg/mL, ABTS of 437.09 ± 36.22 mg TE/g dw and FRAP of 102.62 ± 8.69 mg AAE/g dw. The polyphenolic characterization of Quercus robur, Robinia pseudoacacia and Fraxinus excelsior was done by liquid chromatog./tandem mass spectrometry. In the part of experimental materials, we found many familiar compounds, such as ABTS Diammonium(cas: 30931-67-0Reference of ABTS Diammonium)

ABTS Diammonium(cas: 30931-67-0) belongs to anime. Examples of direct uses of amines and their salts are as corrosion inhibitors in boilers and in lubricating oils (morpholine), as antioxidants for rubber and roofing asphalt (diarylamines), as stabilizers for cellulose nitrate explosives (diphenylamine), as protectants against damage from gamma radiation (diarylamines), as developers in photography (aromatic diamines), as flotation agents in mining, as anticling and waterproofing agents for textiles, as fabric softeners, in paper coating, and for solubilizing herbicides.Reference of ABTS Diammonium

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

In 2019,SAR and QSAR in Environmental Research included an article by Geronikaki, A.; Petrou, A.; Kartsev, V.; Eleftheriou, P.; Boga, R.; Bartolo, B.; Crespan, E.; Franco, G.; Maga, G.. Quality Control of 6-Chlorobenzothiazol-2-ylamine. The article was titled 《Molecular docking, design, synthesis and biological evaluation of novel 2,3-aryl-thiazolidin-4-ones as potent NNRTIs》. The information in the text is summarized as follows:

A series of thiazolidinone derivatives I [R1 = 6-Cl, 6-cyano, 6-(adamant-1-yl), 6-CF3, 4-Me-6-(adamant-1-yl), R2 = 4-F, 4-NO2, 2-F-6-Cl, 2,6-Cl2, 2,6-F2] and II [R3 = 4-(pyridin-2-yl)thiazol-2-yl, 5-ethyl-4-methylthiazol-2-yl] was designed based on a butterfly mimicking scaffold consisting of a substituted benzothiazolyl moiety connected with a substituted Ph ring via a thiazolidinone moiety. The most promising derivatives were selected using mol. docking anal. and PASS prediction program, synthesized and evaluated for HIV-1 RT inhibition. Five out of fifteen tested compounds exhibited good inhibitory action. It was observed that the presence of Cl or CN substituents at position 6 of the benzothiazole ring in combination with two fluoro atoms at the ortho-positions or a hydrogen acceptor substituent at the 4-position of the Ph ring were favorable for the HIV RT inhibitory activity. In addition to this study using 6-Chlorobenzothiazol-2-ylamine, there are many other studies that have used 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Quality Control of 6-Chlorobenzothiazol-2-ylamine) was used in this study.

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.Quality Control of 6-Chlorobenzothiazol-2-ylamineThe thiazole ring has been identified as a central feature of numerous natural products, perhaps the most famous example of which is epothilone.

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

Xia, Huan; Zhong, Xue; Li, Zhixian; Jiang, Yanbin published an article in Journal of Colloid and Interface Science. The title of the article was 《Palladium-mediated hybrid biocatalysts with enhanced enzymatic catalytic performance via allosteric effects》.Synthetic Route of C18H24N6O6S4 The author mentioned the following in the article:

High activity and stability of immobilized enzymes have been constant pursuits and critical challenges for decades. Herein, Cytochrome c (peroxidase, Cyt c) and its corresponding enzyme mimic (Pd nanoparticles) were combined and successfully embedded into a zeolitic imidazolate framework-8 (ZIF-8) to enhance the enzymic catalytic performance using a biomimetic mineralization approach. Owing to allosteric effects of Cyt c-Pd complexes, the as-synthesized Cyt c-Pd@ZIF-8 composites exhibit an increased turnover number (approx. 2.4-fold for kcat) and an enhanced catalytic efficiency (approx. 2.3-fold for kcat/KM) compared to free Cyt c; also the shielding effect of ZIF-8 endows enzyme with improved resistance against harsh conditions (e.g. high temperatures and organic solvents). The strategy, which integrates enzyme with its enzyme mimic derived from transition metal nanoparticles to enhance enzymic catalytic performances, may provide a versatile and facile technique for designing highly efficient and multi-functional bio-catalysts. After reading the article, we found that the author used ABTS Diammonium(cas: 30931-67-0Synthetic Route of C18H24N6O6S4)

ABTS Diammonium(cas: 30931-67-0) belongs to anime. The reaction of alkyl halides, R―X, where X is a halogen, or analogous reagents with ammonia (or amines) is useful with certain compounds. Not all alkyl halides are effective reagents; the reaction is sluggish with secondary alkyl groups and fails with tertiary ones. Its usefulness is largely confined to primary alkyl halides (those having two hydrogen atoms on the reacting site).Synthetic Route of C18H24N6O6S4

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

In 2010,Lin, Shuqun; Wrobleski, Stephen T.; Hynes, John Jr.; Pitt, Sidney; Zhang, Rosemary; Fan, Yi; Doweyko, Arthur M.; Kish, Kevin F.; Sack, John S.; Malley, Mary F.; Kiefer, Susan E.; Newitt, John A.; McKinnon, Murray; Trzaskos, James; Barrish, Joel C.; Dodd, John H.; Schieven, Gary L.; Leftheris, Katerina published 《Utilization of a nitrogen-sulfur nonbonding interaction in the design of new 2-aminothiazol-5-yl-pyrimidines as p38α MAP kinase inhibitors》.Bioorganic & Medicinal Chemistry Letters published the findings.COA of Formula: C3H3BrN2S The information in the text is summarized as follows:

The design, synthesis, and structure-activity relationships (SAR) of a series of 2-aminothiazol-5-yl-pyrimidines as novel p38α MAP kinase inhibitors are described. These efforts led to the identification of I as a potent p38α inhibitor that utilizes a unique nitrogen-sulfur intramol. nonbonding interaction to stabilize the conformation required for binding to the p38α active site. X-ray crystallog. studies that confirm the proposed binding mode of this class of inhibitors in p38α and provide evidence for the proposed intramol. nitrogen-sulfur interaction are discussed. In addition to this study using 5-Bromothiazol-2-amine, there are many other studies that have used 5-Bromothiazol-2-amine(cas: 3034-22-8COA of Formula: C3H3BrN2S) was used in this study.

5-Bromothiazol-2-amine(cas: 3034-22-8) belongs to anime. Halogenation, in which one or more hydrogen atoms of an amine is replaced by a halogen atom, occurs with chlorine, bromine, and iodine, as well as with some other reagents, notably hypochlorous acid (HClO). With primary amines the reaction proceeds in two stages, producing N-chloro- and N,N-dichloro-amines, RNHCl and RNCl2, respectively. With tertiary amines, an alkyl group may be displaced by a halogen.COA of Formula: C3H3BrN2S

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

In 2010,Kitas, Eric; Mohr, Peter; Kuhn, Bernd; Hebeisen, Paul; Wessel, Hans Peter; Haap, Wolfgang; Ruf, Armin; Benz, Joerg; Joseph, Catherine; Huber, Walter; Sanchez, Ruben Alvarez; Paehler, Axel; Benardeau, Agnes; Gubler, Marcel; Schott, Brigitte; Tozzo, Effie published 《Sulfonylureido thiazoles as fructose-1,6-bisphosphatase inhibitors for the treatment of Type-2 diabetes》.Bioorganic & Medicinal Chemistry Letters published the findings.Formula: C3H3BrN2S The information in the text is summarized as follows:

Sulfonylureido thiazoles were identified from a HTS campaign and optimized through a combination of structure-activity studies, x-ray crystallog. and mol. modeling to yield potent inhibitors of fructose-1,6-bisphosphatase. Compound 12 showed favorable ADME properties, for example, F = 70%, and a robust 32% glucose reduction in the acute db/db mouse model for Type-2 diabetes. The experimental part of the paper was very detailed, including the reaction process of 5-Bromothiazol-2-amine(cas: 3034-22-8Formula: C3H3BrN2S)

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.Formula: C3H3BrN2S

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

In 2018,Wang, Beilei; Wu, Jiaxin; Wu, Yun; Chen, Cheng; Zou, Fengming; Wang, Aoli; Wu, Hong; Hu, Zhenquan; Jiang, Zongru; Liu, Qingwang; Wang, Wei; Zhang, Yicong; Liu, Feiyang; Zhao, Ming; Hu, Jie; Huang, Tao; Ge, Juan; Wang, Li; Ren, Tao; Wang, Yuxin; Liu, Jing; Liu, Qingsong published 《Discovery of 4-(((4-(5-chloro-2-(((1s,4s)-4-((2-methoxyethyl)amino)cyclohexyl)amino)pyridin-4-yl)thiazol-2-yl)amino)methyl)tetrahydro-2H-pyran-4-carbonitrile (JSH-150) as a novel highly selective and potent CDK9 kinase inhibitor》.European Journal of Medicinal Chemistry published the findings.Formula: C3H3BrN2S The information in the text is summarized as follows:

Through a structure-guided rational drug design approach, we have discovered a highly selective inhibitor compound 40 (JSH-150), which exhibited an IC50 of 1 nM against CDK9 kinase in the biochem. assay and achieved around 300-10000-fold selectivity over other CDK kinase family members. In addition, it also displayed high selectivity over other 468 kinases/mutants (KINOMEscan S score(1) = 0.01). Compound 40 displayed potent antiproliferative effects against melanoma, neuroblastoma, hepatoma, colon cancer, lung cancer as well as leukemia cell lines. It could dose-dependently inhibit the phosphorylation of RNA Pol II, suppress the expression of MCL-1 and c-Myc, arrest the cell cycle and induce the apoptosis in the leukemia cells. In the MV4-11 cell-inoculated xenograft mouse model, 10 mg/kg dosage of 40 could almost completely suppress the tumor progression. The high selectivity and good in vivo PK/PD profile suggested that 40 would be a good pharmacol. tool to study CDK9-mediated physiol. and pathol. as well as a potential drug candidate for leukemia and other cancers. In the experiment, the researchers used many compounds, for example, 5-Bromothiazol-2-amine(cas: 3034-22-8Formula: C3H3BrN2S)

5-Bromothiazol-2-amine(cas: 3034-22-8) 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).Formula: C3H3BrN2S

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

Quality Control of 5-Bromothiazol-2-amineIn 2013 ,《Design, synthesis and biological evaluation of novel aminothiazoles as antiviral compounds acting against human rhinovirus》 was published in Bioorganic & Medicinal Chemistry Letters. The article was written by Decor, Anne; Grand-Maitre, Chantal; Hucke, Oliver; O’Meara, Jeff; Kuhn, Cyrille; -Forget, Lea Constantineau; Brochu, Christian; Malenfant, Eric; Bertrand-Laperle, Megan; Bordeleau, Josee; Ghiro, Elise; Pesant, Marc; Fazal, Gulrez; Gorys, Vida; Little, Michael; Boucher, Colette; Bordeleau, Sylvain; Turcotte, Pascal; Guo, Tim; Garneau, Michel; Spickler, Catherine; Gauthier, Annick. The article contains the following contents:

Herein the design, synthesis and biol. evaluation of antiviral compounds acting against human rhinovirus (HRV) are described. A series of aminothiazoles I [X = CH, N; R1 = H, Me; R2 = F3CCH2CHMe, cis-4-methoxycyclohexyl, benzyl(4-pyridylcarbonyl)aminomethyl, etc.] demonstrated pan-activity against the HRV genotypes screened and productive structure-activity relationships. A comprehensive investigational library was designed and performed allowing the identification of potent compounds with lower mol. weight and improved ADME profile. The compounds I [X = N; R1 = Me; R2 = F3CCH2CHMe (both enantiomers), F3CCH2CMe2] showed good exposures in CD-1 mice. The mechanism of action was discovered to be a host target: the lipid kinase phosphatidylinositol 4-kinase III beta (PI4KIIIss). The identification of the pan-HRV active compound I (X = N; R1 = Me; R2 = F3CCH2CMe2) combined with a structurally distinct literature compound T-00127-HEV1 allowed the assessment of target related tolerability of inhibiting this kinase for a short period of time in order to prevent HRV replication. In the experiment, the researchers used 5-Bromothiazol-2-amine(cas: 3034-22-8Quality Control of 5-Bromothiazol-2-amine)

5-Bromothiazol-2-amine(cas: 3034-22-8) belongs to anime. The methylamines occur in small amounts in some plants. Many polyfunctional amines (i.e., those having other functional groups in the molecule) occur as alkaloids in plants—for example, mescaline, 2-(3,4,5-trimethoxyphenyl)ethylamine; the cyclic amines nicotine, atropine, morphine, and cocaine; and the quaternary salt choline, N-(2-hydroxyethyl)trimethylammonium chloride, which is present in nerve synapses and in plant and animal cells.Quality Control of 5-Bromothiazol-2-amine

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

Recommanded Product: 3034-22-8In 2011 ,《Thiazolides as Novel Antiviral Agents. 1. Inhibition of Hepatitis B Virus Replication》 was published in Journal of Medicinal Chemistry. The article was written by Stachulski, Andrew V.; Pidathala, Chandrakala; Row, Eleanor C.; Sharma, Raman; Berry, Neil G.; Iqbal, Mazhar; Bentley, Joanne; Allman, Sarah A.; Edwards, Geoffrey; Helm, Alison; Hellier, Jennifer; Korba, Brent E.; Semple, J. Edward; Rossignol, Jean-Francois. The article contains the following contents:

The syntheses and activities of a wide range of thiazolides [viz., 2-hydroxyaroyl-N-(thiazol-2-yl)amides] against hepatitis B virus replication, with results of QSAR anal. are reported. The prototypical thiazolide, nitazoxanide [2-hydroxybenzoyl-N-(5-nitrothiazol-2-yl)amide, NTZ] I, is a broad spectrum antiinfective agent effective against anaerobic bacteria, viruses, and parasites. By contrast, 2-hydroxybenzoyl-N-(5-chlorothiazol-2-yl)amide II is a novel, potent, and selective inhibitor of hepatitis B replication (EC50 = 0.33 μm) but is inactive against anaerobes. Several 4′- and 5′-substituted thiazolides show good activity against HBV; by contrast, some related salicyloylanilides show a narrower spectrum of activity. The ADME properties of II are similar to I, viz., the O-acetate is an effective prodrug, and the O-aryl glucuronide is a major metabolite. The QSAR study shows a good correlation of observed EC90 for intracellular virions with thiazolide structural parameters. Finally the mechanism of action of thiazolides in relation to the present results is discussed. The results came from multiple reactions, including the reaction of 5-Bromothiazol-2-amine(cas: 3034-22-8Recommanded Product: 3034-22-8)

5-Bromothiazol-2-amine(cas: 3034-22-8) belongs to anime. Acylation is one of the most important reactions of primary and secondary amines; a hydrogen atom is replaced by an acyl group (a group derived from an acid, such as RCOOH or RSO3H, by removal of ―OH, such as RC(=O)―, RS(O)2―, and so on). Reagents may be acid chlorides (RCOC1, RSO2C1), anhydrides ((RCO)2O), or even esters (RCOOR′); the products are amides of the corresponding acids.Recommanded Product: 3034-22-8

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