Tag: 100-200

COA of Formula: C7H5ClN2SOn September 30, 2020 ,《A dihedral-angle-controlled mechanochromic luminescent material: Application for pressure sensing》 was published in Dyes and Pigments. The article was written by Hou, Yue; Li, Yue; Zhang, Mengyao; Zhang, Xunxue; Xu, Zhenzhen; Li, Yaping; Duan, Yuai; Han, Tianyu. The article contains the following contents:

For most of the mechanochromic luminescent (MCL) materials, their mechanisms are based on the phase transition. When they are fabricated into devices or films, the MCL cannot be fully activated due to uncontrollable phase state of the materials. In this study, a new MCL material, (E)-6-chloro-N-(4-(dimethylamino)benzylidene)benzo[d]thiazol-2-amine (CDBTA), functioning based on dihedral-angle change, was reported. The initial state of CDBTA glows green emission (520 nm), while grinding changes its color into yellow-orange (551 nm). The switching between two emission states can be stably switched with high fatigue resistance. The underlying MCL mechanism was verified by crystal analyses on two forms of single crystal, namely Green-form (G-form) and Yellow-form (Y-form), resp. Mols. in G-form crystal adopt the twisted conformation by the rotation of the donor-acceptor (D-A) biplane. The dihedral angle is thus fixed by a variety of intermol. interactions. Under mech. stimuli, these interactions are destructed and the intramol. torsional stress is released. Thus the mols. cannot maintain twisted conformation but form D-A coplane similar to the Y-form. Such dihedral-angle-controlled structural relaxation makes the π-electron highly delocalized to facilitate bathochromic-shift. The MCL stems from the changes of dihedral angle of the D-A biplane rather than that in packing mode or phase state, therefore CDBTA offers the possibility to fully activate the MCL performances when instrumented. Encouraged by this advantage, a CDBTA film sensor for pressure detection was fabricated, which exhibits a gradual red-shift with pressure and low detection limit down to 15.21 MPa. The experimental process involved the reaction of 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9COA of Formula: 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.COA of Formula: 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

Category: thiazoleIn 2019 ,《3(2H)-pyridazinone derivatives: a new scaffold for novel plant activators》 appeared in RSC Advances. The author of the article were Shi, Qinjie; Shi, Yanxia; Chang, Kang; Chen, Jianqin; Zhao, Zhenjiang; Zhu, Weiping; Xu, Yufang; Li, Bao Ju; Qian, Xuhong. The article conveys some information:

Due to the emergence of drug resistance, pesticide residue and environmental contamination, it is important to develop novel eco-friendly strategies to protect plants. Among them, plant activators have been gaining more and more attention. Herein, based on SHAFTS method, a new scaffold for novel plant activators was predicted and the discovery and structure-activity relationships of a series of 3(2H)-pyridazinone derivatives as novel plant activators were elucidated in detail. The vast majority of compounds exhibited excellent broad-spectrum induced resistance activity against tested diseases in vivo but no direct antimicrobial activity in vitro. Among them, compound 32 showed excellent efficacy against four pathogens and great potential as new plant activators in crop protection. The experimental process involved the reaction of 5-Bromothiazol-2-amine(cas: 3034-22-8Category: thiazole)

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.Category: thiazole

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

The author of 《Solvent-dependent regio- and stereo-selective reactions of 3-formylchromones with 2-aminobenzothiazoles and transacetalization efficiency of the product 3-((benzo[d]thiazol-2-ylimino)butyl)-4H-chromen-4-one》 were Ahmed, Owais; Cherkadu, Vandana; Kalavagunta, Praveen Kumar; Shang, Jing. And the article was published in RSC Advances in 2019. Application In Synthesis of 6-Chlorobenzothiazol-2-ylamine The author mentioned the following in the article:

Using 2-propanol as the solvent, 3-formylchromones I (R = H, 6-Cl, 6-Br, 6-OH, 6-Cl-8-Br) and 2-aminobenzothiazoles II [R1 = 4-Cl, 6-Br, 4,6-(F2), etc.] formed corresponding imines, (Z)-III while 1° and 2°-alcs. R2OH [R2 = CH3, CH(CH3)2, cyclohexyl, etc.] formed the corresponding 2-alkoxy-3-enamines IV with selectivity for the Z-isomer. Changing the substrates with similar mols. such as 3-formylchromone I with quinoline-, quinolone- and indole-3-carbaldehydes, e.g., 1,4-dihydro-4-oxoquinoline-3-carbaldehyde sometimes resulted in the formation of the corresponding imines, e.g., 3-((benzo[d]thiazol-2-ylimino)methyl)quinolin-4(1H)-one, whereas replacing 2-aminobenzothiazole with amides R3C(O)NH2 (R3 = H, Me, Ph) resulted in the formation of acetals V. Considering the effect of the solvent, replacing alcs. with the aprotic solvents THF and CH2Cl2 resulted in the formation of imines and enamines, which are the characteristic reactions of 2-propanol and other 1° and 2°-alcs., resp. 2-Alkoxy-3-enamines were found to undergo transacetalization with both short and long chain alcs. The novelty of these reactions is that they did not require an external catalyst, all the reactions were performed at the same temperature, and purification was achieved by filtration. The transacetalization has been performed as a new concept, which has not been reported to date. In contrast, other similar reactions, such as transalkoxylation, transalkylation, and transetherification, are performed on a com. scale using expensive catalysts such as Otera’s catalyst. The highly sensitive nature of 3-formylchromones towards variations in the substrates and solvents to form different products and the reason behind the selective formation of the Z-isomer of 2-alkoxy-3-enamines and its transacetalization efficiency need further studies to understand the reaction mechanism and possibly other factors such as solvent effects. The experimental part of the paper was very detailed, including the reaction process of 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Application In Synthesis of 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.Application In Synthesis of 6-Chlorobenzothiazol-2-ylamineTheir 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

In 2022,Blancou, Wafa; Jismy, Badr; Touil, Soufiane; Allouchi, Hassan; Abarbri, Mohamed published an article in Molecules. The title of the article was 《Simple and Expedient Access to Novel Fluorinated Thiazolo- and Oxazolo[3,2-a]pyrimidin-7-one Derivatives and Their Functionalization via Palladium-Catalyzed Reactions》.COA of Formula: C3H3BrN2S The author mentioned the following in the article:

An efficient, versatile, and one-pot method for the preparation of novel fluorinated thiazolo- and oxazolo[3,2-a]pyrimidin-7-ones is described from 2-aminothiazoles or 2-amino-oxazoles and fluorinated alkynoates. This transformation, performed under transition-metal-free conditions, offers new fluorinated cyclized products with good to excellent yields. Moreover, the functionalization of these N-fused scaffolds via the Suzuki-Miyaura and Sonogashira cross-coupling reactions led to the synthesis of highly diverse thiazolo- and oxazolo[3,2-a]pyrimidin-7-ones. 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. In organic chemistry, amines are compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are formally derivatives of ammonia (NH3), wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group (these may respectively be called alkylamines and arylamines; amines in which both types of substituent are attached to one nitrogen atom may be called alkylarylamines).COA of Formula: C3H3BrN2S

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

Lange, Karen I.; Suleman, Aly; Srayko, Martin published an article in Genetics. The title of the article was 《Kinetochore recruitment of the spindle and kinetochore-associated (Ska) complex is regulated by centrosomal PP2A in Caenorhabditis elegans》.SDS of cas: 95-24-9 The author mentioned the following in the article:

During mitosis, kinetochore-microtubule interactions ensure that chromosomes are accurately segregated to daughter cells. RSA-1 (regulator of spindle assembly-1) is a regulatory B”” subunit of protein phosphatase 2A that was previously proposed to modulate microtubule dynamics during spindle assembly. We have identified a genetic interaction between the centrosomal protein, RSA-1, and the spindle- and kinetochore-associated (Ska) complex in Caenorhabditis elegans. In a forward genetic screen for suppressors of rsa-1(or598) embryonic lethality, we identified mutations in ska-1 and ska-3. Loss of SKA-1 and SKA-3, as well as components of the KMN (KNL-1/MIS-12/NDC-80) complex and the microtubule end-binding protein EBP-2, all suppressed the embryonic lethality of rsa-1(or598). These suppressors also disrupted the intracellular localization of the Ska complex, revealing a network of proteins that influence Ska function during mitosis. In rsa-1(or598) embryos, SKA-1 is excessively and prematurely recruited to kinetochores during spindle assembly, but SKA-1 levels return to normal just prior to anaphase onset. Loss of the TPX2 homolog, TPXL- 1, also resulted in overrecruitment of SKA-1 to the kinetochores and this correlated with the loss of Aurora A kinase on the spindle microtubules. We propose that rsa-1 regulates the kinetochore localization of the Ska complex, with spindle-associated Aurora A acting as a potential mediator. These data reveal a novel mechanism of protein phosphatase 2A function during mitosis involving a centrosome-based regulatory mechanism for Ska complex recruitment to the kinetochore. In the experiment, the researchers used 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9SDS of cas: 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.SDS of cas: 95-24-9The 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

In 2008,Lemos, Valfredo Azevedo; Baliza, Patricia Xavier; Lago de Carvalho, Anaildes; Oliveira, Rafael Vasconcelos; Teixeira, Leonardo Sena Gomes; Bezerra, Marcos Almeida published 《Development of a new sequential injection in-line cloud point extraction system for flame atomic absorption spectrometric determination of manganese in food samples》.Talanta published the findings.Recommanded Product: 3034-22-8 The information in the text is summarized as follows:

A preconcentration method for manganese determination by sequential injection cloud point extraction with subsequent detection by flame at. absorption spectrometry (FAAS) has been developed. The enrichment of Mn was performed after a preliminary online cloud point extraction and entrapment of manganese-containing surfactant aggregated within a minicolumn packed with cotton. The laboratory-made reagent 4-(5′-bromo-2′-thiazolylazo)orcinol (Br-TAO) and the surfactant Triton X-114 were used for cloud point extraction The manganese ions were eluted with sulfuric acid solution and directly introduced into the FAAS. Chem. and flow variables affecting the preconcentration were studied. Using a sample volume of 2.80 mL the limit of detection and enrichment factor were calculated to be 0.5 μg L-1 and 14, resp. The sample frequency is 48 h-1, considering a total run cycle of 75 s. The accuracy of the proposed method has been demonstrated by the anal. of the certified reference biol. materials rice flour and tomato leaves. The method has been applied to determination of manganese in food samples. In the experimental materials used by the author, we found 5-Bromothiazol-2-amine(cas: 3034-22-8Recommanded Product: 3034-22-8)

5-Bromothiazol-2-amine(cas: 3034-22-8) belongs to anime. Amine, any member of a family of nitrogen-containing organic compounds that is derived, either in principle or in practice, from ammonia (NH3). Naturally occurring amines include the alkaloids, which are present in certain plants; the catecholamine neurotransmitters (i.e., dopamine, epinephrine, and norepinephrine); and a local chemical mediator, histamine, that occurs in most animal tissues.Recommanded Product: 3034-22-8

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

In 2021,RSC Medicinal Chemistry included an article by Gao, Kai; Shaabani, Shabnam; Xu, Ruixue; Zarganes-Tzitzikas, Tryfon; Gao, Li; Ahmadianmoghaddam, Maryam; Groves, Matthew R.; Doemling, Alexander. Category: thiazole. The article was titled 《Nanoscale, automated, high throughput synthesis and screening for the accelerated discovery of protein modifiers》. The information in the text is summarized as follows:

Hit finding in early drug discovery is often based on high throughput screening (HTS) of existing and historical compound libraries, which can limit chem. diversity, is time-consuming, very costly, and environmentally not sustainable. On-the-fly compound synthesis and in situ screening in a highly miniaturized and automated format has the potential to greatly reduce the medicinal chem. environmental footprint. Here, acoustic dispensing technol. has been used to synthesize a library in a 1536 well format based on the Groebke-Blackburn-Bienayme’ reaction (GBB-3CR) on a nanomole scale. The unpurified library was screened by differential scanning fluorimetry (DSF) and cross-validated using microscale thermophoresis (MST) against the oncogenic protein-protein interaction menin-MLL. Several GBB reaction products were found as μM menin binder, and the structural basis of the interactions with menin was elucidated by co-crystal structure anal. Miniaturization and automation of the organic synthesis and screening process can lead to an acceleration in the early drug discovery process, which is an alternative to classical HTS and a step towards the paradigm of continuous manufacturing6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Category: thiazole) 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.Category: thiazoleThe 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

Application In Synthesis of 6-Chlorobenzothiazol-2-ylamineOn October 26, 2021 ,《An efficient one-pot synthesis of 2-aminobenzothiazoles from substituted anilines using benzyltrimethylammonium dichloroiodate and ammonium thiocyanate in DMSO:H2O》 was published in Tetrahedron Letters. The article was written by Dass, Reuben; Peterson, Matt A.. The article contains the following contents:

Treatment of anilines with benzyltrimethylammonium dichloroiodate and ammonium thiocyanate in DMSO:H2O at 70°C gave the 2-aminobenzothiazoles I [R = 6-F, 6-Me, 4-F, etc.] in excellent isolated yields (75-97% and ave. yield for all substrates is 90%). The reaction worked well for 2(4)mono-2,4-di- or 3,4,5-tri-substituted anilines and a wide range of both electron donating groups (MeO, HO, CF3O, Me) and electron withdrawing groups (NO2, CN, CO2Et, CO2H, Cl, F) were well tolerated. This method provided a useful alternative to other methods that are either less efficient (requiring 3-7 fold equivalent of reagents) or utilize highly toxic and corrosive liquid Br2 as the oxidizing agent. The experimental part of the paper was very detailed, including the reaction process of 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Application In Synthesis of 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.Application In Synthesis of 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

In 2006,Barrett, Olivia J.; Childs, Jessica L.; Disney, Matthew D. published 《Chemical microarrays to identify ligands that bind pathogenic cells》.ChemBioChem published the findings.SDS of cas: 3034-22-8 The information in the text is summarized as follows:

The use of microarrays to identify new ligands for cells by interrogating their binding to a library of organic ligands is described. The advantages of using microarrays include assay miniaturization and the manner in which ligands are displayed in a small area. This display mimics interactions that occur at cell-cell interfaces and amplifies binding affinities. In addition, a series of array surfaces was tested for resisting nonspecific binding, which includes amine-, BSA, and agarose- (aldehyde-) coated glass, plain glass, and glass coated with ethanolamine prepared in a two-step procedures from amine-coated slides using the pathogenic Pseudomonas aeruginosa, which forms sticky biofilms. The agarose slides offer an alternative as a more general arraying substrate to study the binding of microarray-immobilized ligands to cells. 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. 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).SDS of cas: 3034-22-8

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

Lan, Xiaohao; Zhang, Yueli; Jia, Xiaoying; Dong, Siqi; Liu, Yang; Zhang, Mengmeng; Guo, Jiao; Cao, Junyuan; Guo, Yu; Xiao, Gengfu; Wang, Wei published an article on January 31 ,2022. The article was titled 《Screening and identification of Lassa virus endonuclease-targeting inhibitors from a fragment-based drug discovery library》, and you may find the article in Antiviral Research.Synthetic Route of C7H5ClN2S The information in the text is summarized as follows:

Lassa virus (LASV) belongs to the Old World genus Mammarenavirus, family Arenaviridae, and order Bunyavirales. Arenavirus contains a segmented neg.-sense RNA genome, which is in line with the bunyavirus and orthomyxoviruses. The segmented neg.-sense RNA viruses utilize a cap-snatching strategy to provide primers cleavaged from the host capped mRNA for viral mRNA transcription. As a similar strategy and the conformational conservation shared with these viruses, the endonuclease (EN) would serve as an attractive target for developing broad-spectrum inhibitors. Using the LASV minigenome (MG) system, we screened a fragment-based drug discovery library and found that two hits, F1204 and F1781, inhibited LASV MG activity. Both hits also inhibited the prototype arenavirus Lymphocytic choriomeningitis virus (LCMV) MG activity. Furthermore, both hits effectively inhibited authentic LCMV and severe fever with thrombocytopenia syndrome virus (SFTSV) infections. Similarly, both hits could inhibit the activity of LASV, LCMV, and SFTSV EN. The combination of either compound with an arenavirus entry inhibitor had significant synergistic antiviral effects. Moreover, both hits were found to be capable of binding to LASV EN with a binding affinity at the micromolar level. These findings provide a basis for developing the hits as potential candidates for the treatment of segmented neg.-sense RNA virus infections. After reading the article, we found that the author used 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Synthetic Route 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.Synthetic Route of C7H5ClN2SThe 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