Day: October 21, 2022

Hou, Yue; Du, Jiaorui; Hou, Jingdan; Shi, Peijun; Wang, Kai; Zhang, Shen; Han, Tianyu; Li, Zhongfeng published an article on January 31 ,2019. The article was titled 《Rewritable optical data storage based on mechanochromic fluorescence materials with aggregation-induced emission》, and you may find the article in Dyes and Pigments.Category: thiazole The information in the text is summarized as follows:

In this work, the synthesis and aggregation-induced emission (AIE) properties of a new mol. system are reported. This system composes of three positional isomers, which are fabricated by attaching a methoxy group in different locations. The isomeric effects on the AIE properties as well as the intramol. charge transfer (ICT) processes were studied. Addnl. the new isomers exhibit mechanochromic fluorescence (MCF). Among the three isomers, (E)-2-(((6-chlorobenzo[d]thiazol-2-yl)imino)methyl)-5-methoxyphenol (CHM3) exhibits the most remarkable MCF performance with emission that decreases in intensity and red-shifts in wavelength under mech. stimuli. The emission changes are caused by crystalline-amorphous transition as verified by Powder X-ray diffraction (PXRD) anal. The mechano-induced state can be easily recovered through a recrystallization process, which can be activated by solvent fumigation or solvent immersion. Furthermore, the switching between two emission states shows nice reversibility. Based on the MCF material with high fatigue resistance, a new type of rewritable optical data storage (ODS) is developed. Binary data, comprised of “”0″” and “”1″” state, can be matched well with the two emission states, resp. The data could thus be written or erased on the ODS device, demonstrating feasibility and practicability. In the experiment, the researchers used many compounds, for example, 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Category: thiazole)

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

The author of 《Impact of genotype, environment, and malting conditions on the antioxidant activity and phenolic content in US malting barley》 were Zhou, Bing; Jin, Zhao; Schwarz, Paul; Li, Yin. And the article was published in Fermentation in 2020. Recommanded Product: 30931-67-0 The author mentioned the following in the article:

The phenolic content and antioxidant potential of malting barley are important in brewing. The objective of our study was to investigate the effects of barley genotype, growing environment, and malting conditions on the total phenolic content and antioxidant activities of malting barley grown in North America. Eight barley cultivars grown at three locations over three years were used. For the malting study, a single barley cultivar, separated into different kernel size fractions, was germinated for various periods of time and then processed by kilning or freeze-drying. Total phenolic content (TPC) and some of the antioxidant activities, including DPPH, ABTS, and superoxide anion radical scavenging activities, reducing power, and iron (II) chelating activity, were significantly impacted by the barley genotype, growth environment, and their interactions. The TPC and most antioxidant activities were also influenced by malting conditions and were generally higher in the malted barleys of the thin kernel size fraction, four-day germination, and in samples processed by kilning, when compared to the plumper kernel size fractions, one and two days of germination, and freeze-dried samples, resp. There were interactions between malting parameters, and stepwise regression anal. was used to suggest the contribution of each parameter to the TPC and antioxidant activities. In the experimental materials used by the author, we found ABTS Diammonium(cas: 30931-67-0Recommanded Product: 30931-67-0)

ABTS Diammonium(cas: 30931-67-0) belongs to anime. Hydrogen peroxide (H2O2) and peroxy acids generally add an oxygen atom to the nitrogen of amines. With primary amines, this step is normally followed by further oxidation, leading to nitroso compounds, RNO, or nitro compounds, RNO2. Secondary amines are converted to hydroxylamines, R2NOH, and tertiary amines to amine oxides, R3NO.Recommanded Product: 30931-67-0

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

Yilmaz, Mehmet; Inal, Asli Ustalar published an article in Tetrahedron. The title of the article was 《Microwave assisted synthesis of 2,3-dihydro-4H-benzo[4,5]thiazolo[3,2-a]furo[2,3-d] pyrimidin-4-ones by radical addition of 2-hydroxy-4H-benzo[4,5]thiazolo[3,2-a] pyrimidin-4-ones to various conjugated alkenes and dienes mediated Mn(OAc)3》.Reference of 6-Chlorobenzothiazol-2-ylamine The author mentioned the following in the article:

Synthesis of chem. important, novel 2,3-dihydro-4H-benzo [4,5]thiazolo [3,2-a]furo [2,3-d]pyrimidin-4-one derivatives, I (R1 = H, Me, F, CF3; R2 = H, Me, Ph, 4-F-C6H4; R3 = Ph, 2-thienyl, 4-F-C6H4, etc.), was approached in this work. These heterocyclic compounds were synthesized in good to excellent yields from the reaction of Mn(OAc)3 mediated radical addition of 2-hydroxy-4H-benzo [4,5]thiazolo [3,2-a]pyrimidin-4-one derivatives to various conjugated alkenes and dienes under microwave irradiation in mild conditions. Also, a different compound skeleton, 2,3-dihydrobenzo [4,5]imidazo [1,2-a]furo [2,3-d]pyrimidin-4(10H)-one, II, was obtained from the reaction of 2-hydroxy-10-methylbenzo [4,5]imidazo [1,2-a]pyrimidin-4(10H)-one and 1,1-diphenylethylene for the first time. While no product was obtained with conventional method in radical addition reactions, dihydrofuropyrimidines, I,andcompd. II were synthesized in excellent yields using microwave irradiating method at 150°C, 350 W for 60 s. In the experimental materials used by the author, we found 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Reference 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.Reference 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

《Bioactive Properties of a Novel Antibacterial Dye Obtained from Laccase-Mediated Oxidation of 8-Anilino-1-naphthalenesulfonic Acid》 was published in Molecules in 2022. These research results belong to Polak, Jolanta; Graz, Marcin; Wlizlo, Kamila; Szalapata, Katarzyna; Kapral-Piotrowska, Justyna; Paduch, Roman; Jarosz-Wilkolazka, Anna. Quality Control of ABTS Diammonium The article mentions the following:

Fungal laccase obtained from a Cerrena unicolor strain was used as an effective biocatalyst for the transformation of 8-anilino-1-naphthalenesulfonic acid into a green-colored antibacterial compound, which can be considered as both an antimicrobial agent and a textile dye, simultaneously. The process of biosynthesis was performed in buffered solutions containing methanol as a co-solvent, allowing better solubilization of substrate. The transformation process was optimized in terms of the buffer pH value, laccase activity, and concentrations of the substrate and co-solvent. The crude product obtained exhibited low cytotoxicity, antibacterial properties against Staphylococcus aureus and Staphylococcus epidermidis, and antioxidant properties. Moreover, the synthesized green-colored compound proved non-allergenic and demonstrated a high efficiency of dyeing wool fibers.ABTS Diammonium(cas: 30931-67-0Quality Control of ABTS Diammonium) was used in this study.

ABTS Diammonium(cas: 30931-67-0) 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.Quality Control of ABTS Diammonium

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

In 2022,RSC Advances included an article by Moussa, Ziad; Judeh, Zaher M. A.; Alzamly, Ahmed; Ahmed, Saleh A.; Tomah Al-Masri, Harbi; Al-Hindawi, Bassam; Rasool, Faisal; Saada, Sara. Safety of 5-Methoxybenzo[d]thiazole-2-carbonitrile. The article was titled 《Iodine-DMSO mediated conversion of N-arylcyanothioformamides to N-arylcyanoformamides and the unexpected formation of 2-cyanobenzothiazoles》. The information in the text is summarized as follows:

Herein, the effectiveness of the I2-DMSO oxidative system in the preparation of N-arylcyanoformamides RNHC(O)CN (R = Ph, 3-nitrophenyl, 2,4-difluorophenyl, etc.) from N-arylcyanothioformamides RNHC(=S)CN was demonstrated. The synthetic method features mild conditions, broad substrate scope, and high reaction efficiency. Furthermore, this method provides an excellent entry to exclusively afford 2-cyanobenzothiazoles I (R1 = H, OMe; R2 = H, OMe, SMe, benzoxy; R1R2 = -CH=CH-CH=CH-; R3 = H, OMe; R4 = H, I, OMe) which are useful substrates to access new luciferin analogs. The structures of all new products RNHC(O)CN and I were elucidated by multinuclear NMR spectroscopy and high accuracy mass spectral anal. Crystal-structure determination by means of single-crystal X-ray diffraction was carried out on (4-bromophenyl)carbamoyl cyanide, I (R1 = H, R2 = benzoxy, R3 = R4 = H; R1 = H, R2 = R3 = OMe, R4 = H; R1 = OMe, R2 = R3 = H, R4 = OMe; R1 = OMe, R2 = H, R3 = OMe, R4 = I), a key intermediate with mechanistic implications. The experimental part of the paper was very detailed, including the reaction process of 5-Methoxybenzo[d]thiazole-2-carbonitrile(cas: 7267-35-8Safety of 5-Methoxybenzo[d]thiazole-2-carbonitrile)

5-Methoxybenzo[d]thiazole-2-carbonitrile(cas: 7267-35-8) belongs to thiazoles. Thiazoles are a class of five-membered rings containing nitrogen and sulfur with excellent antitumor, antiviral and antibiotic activities.Safety of 5-Methoxybenzo[d]thiazole-2-carbonitrileTheir 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

The author of 《1-Phenyl-N-(benzothiazol-2-yl)methanimine derivatives as Middle East respiratory syndrome coronavirus inhibitors》 were Hu, Min-Qi; Li, Heng; Lin, Ying; Zhang, Ying; Tang, Jie; Zuo, Jian-Ping; Yu, Li-Fang; Tong, Xian-Kun; Tang, Wei; Yang, Fan. And the article was published in RSC Advances in 2020. Synthetic Route of C7H3BrFNS The author mentioned the following in the article:

Middle East respiratory syndrome coronavirus (MERS-CoV) poses a serious threat to human health, and currently there are no effective or specific therapies available to treat it. Herein a series of 1-phenyl-N-(benzothiazol-2-yl)methanimine derivatives with inhibitory activity against MERS-CoV are described. The compound 4f with a 50% inhibition concentration value of 0.09 μM is a promising inhibitor that warrants further evaluation, towards the development of potential anti-MERS-CoV drugs. After reading the article, we found that the author used 2-Bromo-6-fluorobenzothiazole(cas: 152937-04-7Synthetic Route of C7H3BrFNS)

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.Synthetic Route of C7H3BrFNSTheir 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

The author of 《Exploration of the Antimicrobial Effects of Benzothiazolylthiazolidin-4-One and In Silico Mechanistic Investigation》 were Haroun, Michelyne; Tratrat, Christophe; Petrou, Anthi; Geronikaki, Athina; Ivanov, Marija; Ciric, Ana; Sokovic, Marina; Nagaraja, Sreeharsha; Venugopala, Katharigatta Narayanaswamy; Balachandran Nair, Anroop; Elsewedy, Heba S.; Kochkar, Hafedh. And the article was published in Molecules in 2021. Product Details of 95-24-9 The author mentioned the following in the article:

Infectious diseases still affect large populations causing significant morbidity and mortality. Bacterial and fungal infections for centuries were the main factors of death and disability of millions of humans. Despite the progress in the control of infectious diseases, the appearance of resistance of microbes to existing drugs creates the need for the development of new effective antimicrobial agents. In an attempt to improve the antibacterial activity of previously synthesized compounds modifications to their structures were performed. Nineteen thiazolidinone derivatives with 6-Cl, 4-OMe, 6-CN, 6-adamantan, 4-Me, 6-adamantan substituents at benzothiazole ring were synthesized and evaluated against panel of four bacterial strains S. aureus, L. monocytogenes, E. coli and S. typhimirium and three resistant strains MRSA, E. coli and P. aeruginosa in order to improve activity of previously evaluated 6-OCF3-benzothiazole-based thiazolidinones. The evaluation of min. inhibitory and min. bactericidal concentration was determined by microdilution method. As reference compounds ampicillin and streptomycin were used. All compounds showed antibacterial activity with MIC in range of 0.12-0.75 mg/mL and MBC at 0.25->1.00 mg/mL The most active compound among all tested appeared to be compound 18, with MIC at 0.10 mg/mL and MBC at 0.12 mg/mL against P. aeruginosa. as well as against resistant strain P. aeruginosa with MIC at 0.06 mg/mL and MBC at 0.12 mg/mL almost equipotent with streptomycin and better than ampicillin. Docking studies predicted that the inhibition of LD-carboxypeptidase is probably the possible mechanism of antibacterial activity of tested compounds The best improvement of antibacterial activity after modifications was achieved by replacement of 6-OCF3 substituent in benzothiazole moiety by 6-Cl against S. aureus, MRSA and resistant strain of E. coli by 2.5 folds, while against L. monocytogenes and S. typhimirium from 4 to 5 folds. The experimental process involved the reaction of 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Product Details of 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.Product Details of 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

Wang, Rongrong; Huang, Xirong published their research in ACS Omega on August 10 ,2021. The article was titled 《Anionic-Surfactant-Stabilized Hydrophobic Ionic-Liquid-Based Bicontinuous Microemulsion as a Medium for Enzymatic Oxidative Polymerization of Aniline》.Related Products of 30931-67-0 The article contains the following contents:

The hydrophobic ionic liquid [C8mim][PF6] (1-octyl-3-methylimidazolium hexafluorophosphate)-based bicontinuous microemulsion stabilized by the anionic surfactant [C4mim][AOT] (1-butyl-3-methylimidazolium bis(2-ethylhexyl) sulfosuccinate) was first tried as a medium for horseradish peroxidase (HRP)-triggered oxidative polymerization of aniline. The effects of the mass ratio of [C8mim][PF6]-to-water (α), the mass fraction of [C4mim][AOT] in the total mixture (γ), and temperature (T) on the enzymic polymerization were investigated using UV-vis-NIR absorption, ESR, and small-angle X-ray scattering spectroscopy techniques. The bicontinuous microemulsion is demonstrated to play a template role in the biosynthesis of polyaniline (PANI). The conductivity of the resulting PANI depends on the microemulsion microstructure and the microstructure- and T-dependent catalytic properties of the solubilized HRP. With the increase in α, the conductivity of the synthesized PANI decreases due to the increase in the template curvature (decrease of the microdomain size) and the decrease in the activity and stability of HRP. Compared with α, γ has little effect on the microdomain size of the template; so, the γ-dependent change in the conductivity of PANI is mainly caused by the changes of the microstructure-dependent activity and stability of HRP. Over the range of 20-35°C, T has little effect on the microdomain size, but it greatly changes the activity and stability of HRP. With the increase in T, the activity of HRP increases steadily, but its stability decreases significantly, which should be one of the reasons why the conductivity of PANI decreases with increasing T. In conclusion, lower values of α, γ, and T are favorable for the biosynthesis of conductive PANI. The present study not only deepens the insight into the role of the template in the process of PANI synthesis, but also opens up a green new way for the biosynthesis of the conducting polymer.ABTS Diammonium(cas: 30931-67-0Related Products of 30931-67-0) was used in this study.

ABTS Diammonium(cas: 30931-67-0) 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.Related Products of 30931-67-0

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

Category: thiazoleIn 2021 ,《Discovery of a cooperative mode of inhibiting RIPK1 kinase》 was published in Cell Discovery. The article was written by Meng, Huyan; Wu, Guowei; Zhao, Xinsuo; Wang, Anhui; Li, Dekang; Tong, Yilun; Jin, Taijie; Cao, Ye; Shan, Bing; Hu, Shichen; Li, Ying; Pan, Lifeng; Tian, Xiaoxu; Wu, Ping; Peng, Chao; Yuan, Junying; Li, Guohui; Tan, Li; Wang, Zhaoyin. The article contains the following contents:

RIPK1, a death domain-containing kinase, has been recognized as an important therapeutic target for inhibiting apoptosis, necroptosis, and inflammation under pathol. conditions. RIPK1 kinase inhibitors have been advanced into clin. studies for the treatment of various human diseases. One of the current bottlenecks in developing RIPK1 inhibitors is to discover new approaches to inhibit this kinase as only limited chemotypes have been developed. Here we describe Necrostatin-34 (Nec-34), a small mol. that inhibits RIPK1 kinase with a mechanism distinct from known RIPK1 inhibitors such as Nec-1s. Mechanistic studies suggest that Nec-34 stabilizes RIPK1 kinase in an inactive conformation by occupying a distinct binding pocket in the kinase domain. Furthermore, we show that Nec-34 series of compounds can synergize with Nec-1s to inhibit RIPK1 in vitro and in vivo. Thus, Nec-34 defines a new strategy to target RIPK1 kinase and provides a potential option of combinatorial therapy for RIPK1-mediated diseases. The experimental part of the paper was very detailed, including the reaction process of 5-Bromothiazol-2-amine(cas: 3034-22-8Category: thiazole)

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

《Carbohydrates profile, polyphenols content and antioxidative properties of beer worts produced with different dark malts varieties or roasted barley grains》 was published in Molecules in 2020. These research results belong to Gasior, Justyna; Kawa-Rygielska, Joanna; Kucharska, Alicja Z.. Safety of ABTS Diammonium The article mentions the following:

The aim of this study was to assess the possibility of shaping properties of beers at the stage of brewing wort production with the use of various types of special malts (chocolate pale, chocolate dark, wheat chocolate, brown barley) and roasted barley grains. The carbohydrate profile, polyphenols content, antioxidant capacity, 5-hydroxymethylfurfural content, and the browning index level were analyzed. Statistical anal. showed significant differences in the values of the examined features between the samples. The sugars whose content was most affected by the addition of special malts were maltose and dextrins. The polyphenol content in worts with 10% of additive was 176.02-397.03 mg GAE/L, ferric reducing antioxidant power (FRAP) 1.32-2.07 mmol TE/L, and capacity to reduction radical generated from 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS•+) 1.46-2.70 mmol TE/L. Wort with 40% dark malt showed the highest content of polyphenolic compounds and antioxidant activity (FRAP and ABTS•+). The HMF content and the browning index value were higher for wort with the addition of darker-colored malts (EBC) and increased with increasing dark malt dose. The experimental process involved the reaction of ABTS Diammonium(cas: 30931-67-0Safety of ABTS Diammonium)

ABTS Diammonium(cas: 30931-67-0) 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.Safety of ABTS Diammonium

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