Month: October 2022

Chen, Xue-Ping’s team published research in Journal of Organic Chemistry in 2021 | 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.Application In Synthesis 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.

Chen, Xue-Ping; Hou, Ke-Qiang; Zhou, Feng; Chan, Albert S. C.; Xiong, Xiao-Feng published an article on January 15 ,2021. The article was titled 《Organocatalytic Asymmetric Synthesis of Benzothiazolopyrimidines via [4 + 2] Cyclization of 2-Benzothiazolimines and Aldehydes》, and you may find the article in Journal of Organic Chemistry.Application In Synthesis of 6-Chlorobenzothiazol-2-ylamine The information in the text is summarized as follows:

The direct asym. synthesis of pyrimido[2,1-b]benzothiazoles using a com. available chiral amine catalyst was reported. A variety of 2-benzothiazolimines and aldehydes were well tolerated under the reaction conditions and generated the corresponding products in 81-99% yields with excellent diastereoselectivities and enantioselectivities (up to >20:1 dr, 99% ee). Furthermore, the products could be easily converted to other useful chiral building blocks. 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-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

Zhou, Xiaojing’s team published research in New Journal of Chemistry in 2013 | CAS: 144060-98-0

4-Methyl-2-(pyridin-4-yl)thiazole-5-carboxylic acid(cas: 144060-98-0) belongs to pyridine. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. As ligands, solvents, and catalysts they facilitate reactions; thus descriptions of these new ligands and their applications abound each year.Electric Literature of C10H8N2O2S

In 2013,New Journal of Chemistry included an article by Zhou, Xiaojing; Zhang, Zhijuan; Li, Baiyan; Yang, Fen; Peng, Yu; Li, Guanghua; Shi, Zhan; Feng, Shouhua; Li, Jing. Electric Literature of C10H8N2O2S. The article was titled 《Two three-dimensional metal-organic frameworks constructed by thiazole-spaced pyridinecarboxylates exhibiting selective gas sorption or antiferromagnetic coupling》. The information in the text is summarized as follows:

The ligand of 2-(4-pyridyl)-4-methylthiazole-5-carboxylic acid (HL) was employed to react with Cd(NO3)2·6H2O or a 50% aqueous solution of Mn(NO3)2, to yield two isomorphous three-dimensional (3D) coordination compounds, [Cd(L)2](H2O)4(DMF) (1) and [Mn(L)2](H2O)3(DMF) (2). The structures and properties of the compounds were characterized by several techniques. Both compounds are three-dimensional (3D) neutral frameworks possessing permanent pores that give rise to straight 1-dimensional channels. Compound 1 displays adsorption selectivity for CO2, while the low pressure sorption of H2, N2, CH4, CO, O2 at 298 K are negligible; Compound 2 shows weak anti-ferromagnetic coupling between the magnetic centers. After reading the article, we found that the author used 4-Methyl-2-(pyridin-4-yl)thiazole-5-carboxylic acid(cas: 144060-98-0Electric Literature of C10H8N2O2S)

4-Methyl-2-(pyridin-4-yl)thiazole-5-carboxylic acid(cas: 144060-98-0) belongs to pyridine. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. As ligands, solvents, and catalysts they facilitate reactions; thus descriptions of these new ligands and their applications abound each year.Electric Literature of C10H8N2O2S

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

Majerska, Monika’s team published research in Molecular Pharmaceutics in 2019 | CAS: 30931-67-0

ABTS Diammonium(cas: 30931-67-0) belongs to anime. Left-handed and right-handed forms (mirror-image configurations, known as optical isomers or enantiomers) are possible when all the substituents on the central nitrogen atom are different (i.e., the nitrogen is chiral). With amines, there is extremely rapid inversion in which the two configurations are interconverted.Quality Control of ABTS Diammonium

Majerska, Monika; Jakubec, Martin; Klimsa, Vojtech; Rimpelova, Silvie; Kral, Vlastimil; Stepanek, Frantisek published an article in Molecular Pharmaceutics. The title of the article was 《Microgel bioreactors for cancer cell targeting by pH-dependent generation of radicals》.Quality Control of ABTS Diammonium The author mentioned the following in the article:

The lack of specificity of traditional cytostatics and increasing resistance of cancer cells represent important challenges in cancer therapy. One of the characteristics of cancer cells is their intrinsic oxidative stress caused by higher metabolic activity, mitochondrial malfunction, and oncogene stimulation. This feature can be exploited in the pursuit of more selective cancer therapy, as there is increasing evidence that cancer cells are more sensitive to elevated concentrations of reactive oxygen species than normal cells. In this study, we demonstrate a new concept for cancer cell targeting by in situ production of radicals under physiol. conditions. The biol. active radicals are produced in the milieu of cancer cells by enzymic conversion from an inactive precursor, 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)diammonium salt, by using miniature bioreactors represented by cell-sized microgels containing immobilized laccase. We utilize the pH-dependent activity of laccase to generate radicals only at a lower pH (5.7-6.1) that is characteristic of the tumor microenvironment. The composition of the microgels was optimized so as to allow sufficient substrate and radical diffusion, high enzyme activity, and stability under physiol. conditions. The functionality of this system was evaluated on three cancer cell lines (HeLa, HT-29, and DLD1) and the cytotoxicity of in situ-produced radicals was successfully proven in all cases. These results demonstrate that cancer cell targeting by in situ-generated radicals using miniature enzymic reactors may represent an alternative to traditional cytostatics. In particular, the pH-dependence of radical generation and their short-lived nature can ensure localized functionality in the tumor microenvironment and thereby reduce systemic side-effects. In the part of experimental materials, we found many familiar compounds, such as ABTS Diammonium(cas: 30931-67-0Quality Control of ABTS Diammonium)

ABTS Diammonium(cas: 30931-67-0) belongs to anime. Left-handed and right-handed forms (mirror-image configurations, known as optical isomers or enantiomers) are possible when all the substituents on the central nitrogen atom are different (i.e., the nitrogen is chiral). With amines, there is extremely rapid inversion in which the two configurations are interconverted.Quality Control of ABTS Diammonium

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

Bai, Shuya’s team published research in Annals of Translational Medicine in 2021 | 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.Synthetic Route of C7H5ClN2STheir presence in peptides or their ability to bind proteins, DNA and RNA has led to many synthetic studies and new applications.

The author of 《Spindle and kinetochore-associated complex subunit 3 (SKA3) promotes stem cell-like properties of hepatocellular carcinoma cells through activating Notch signaling pathway》 were Bai, Shuya; Chen, Wei; Zheng, Mengli; Wang, Xiju; Peng, Wang; Zhao, Yuchong; Wang, Yun; Xiong, Si; Cheng, Bin. And the article was published in Annals of Translational Medicine in 2021. Synthetic Route of C7H5ClN2S The author mentioned the following in the article:

Cancer stemness contributes to hepatocellular carcinoma (HCC) initiation, metastasis, drug resistance, and recurrence. The spindle and kinetochore-associated (SKA) complex has been shown to be involved in tumor progression; however, its effects on cancer stem cell-like properties have not yet been examined This research sought to study each subunit of the SKA complex in HCC systematically. Bioinformatic analyses were carried out to examine the expression and clin. data of the SKA complex′s each subunit in HCC. The expression of the target genes was detected by quant. reverse transcription-polymerase chain reaction and Western blot assays. Clone formation and Transwell assays were performed to assess the proliferation and migration abilities of the SKA complex′s each subunit. Sphere formation assays and s.c. xenograft experiments were performed to investigate the effects of SKA complex subunit 3 (SKA3) on the self-renewal and tumorigenic abilities of HCC. Each subunit of the SKA complex was highly expressed in HCC, but only SKA complex subunit 1 (SKA1) and SKA3 were associated with the poor overall survival of HCC patients. Addnl., the HCC cells overexpressing SKA3 exhibited increased migration, invasion, proliferation, self-renewal, Sorafenib resistance and tumorigenic abilities. Notch signaling played a vital role in the process by which SKA3 promoted HCC stemness. SKA3 promotes HCC stem cell-like properties via the Notch signaling pathway. As SKA3 appears to act as a regulator of stemness in HCC, it might be a potential mol. target for HCC. The experimental process involved the reaction of 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 C7H5ClN2STheir 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

Surendra Kumar, Radhakrishnan’s team published research in Bioorganic & Medicinal Chemistry Letters in 2017-01-01 | 1003-32-3

Bioorganic & Medicinal Chemistry Letters published new progress about Antibacterial agents. 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, SDS of cas: 1003-32-3.

Surendra Kumar, Radhakrishnan; Moydeen, Meera; Al-Deyab, Salem S.; Manilal, Aseer; Idhayadhulla, Akbar published the artcile< Synthesis of new morpholine-connected pyrazolidine derivatives and their antimicrobial, antioxidant, and cytotoxic activities>, SDS of cas: 1003-32-3, the main research area is morpholine pyrazolidine derivative synthesis antimicrobial antioxidant anticancer; Antimicrobial activity; Antioxidant activity; Cytotoxic activity; Morpholine-connected pyrazolidine; Pyrrolidine metal-free catalysis.

A simple and convenient one-pot four-component synthesis of morpholine-connected pyrazolidine derivatives 2a-f and 4a-f was developed using direct metal-free catalysis, with the identities of the synthesized compounds confirmed by IR, NMR (1H and 13C), mass spectrometry, and elemental anal. The prepared compounds were inspected for antimicrobial, antioxidant, and cytotoxic activities. Antimicrobial and antifungal activities against five bacterial and four fungal pathogens, resp., were investigated using the disk diffusion technique. In antibacterial activity, compounds 2d and 2f (I and II, resp., MIC = 2 μg/mL) exhibited significantly higher activity than the standard ciprofloxacin. The results of antifungal assay showed that the activity of compound 4a (IV, MIC = 0.5 μg/mL) was significantly higher than the standard clotrimazole. Antioxidant activity was screened based on ABTS·+ radical scavenging and linoleic acid peroxidation performance. Compound 4a showed substantial antioxidant (91.3%) activities, as compared with the Trolox standard Cytotoxicity was evaluated using HepG2 (liver), HeLa (cervical), and MCF-7 (breast) cancer cell lines, with high toxicities observed for 2b (III, GI50 = 12.2 μm) and 4a (GI50 = 07.8 μm).

Bioorganic & Medicinal Chemistry Letters published new progress about Antibacterial agents. 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, SDS of cas: 1003-32-3.

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

Flipo, Marion’s team published research in Journal of Medicinal Chemistry in 2012-01-12 | 1003-32-3

Journal of Medicinal Chemistry published new progress about Homo sapiens. 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, Electric Literature of 1003-32-3.

Flipo, Marion; Desroses, Matthieu; Lecat-Guillet, Nathalie; Villemagne, Baptiste; Blondiaux, Nicolas; Leroux, Florence; Piveteau, Catherine; Mathys, Vanessa; Flament, Marie-Pierre; Siepmann, Juergen; Villeret, Vincent; Wohlkonig, Alexandre; Wintjens, Rene; Soror, Sameh H.; Christophe, Thierry; Jeon, Hee Kyoung; Locht, Camille; Brodin, Priscille; Deprez, Benoit; Baulard, Alain R.; Willand, Nicolas published the artcile< Ethionamide Boosters. 2. Combining Bioisosteric Replacement and Structure-Based Drug Design To Solve Pharmacokinetic Issues in a Series of Potent 1,2,4-Oxadiazole EthR Inhibitors>, Electric Literature of 1003-32-3, the main research area is oxadiazole EthR inhibitor preparation structure tuberculosis pharmacokinetics.

Mycobacterial transcriptional repressor EthR controls the expression of EthA, the bacterial monooxygenase activating ethionamide, and is thus largely responsible for the low sensitivity of the human pathogen Mycobacterium tuberculosis to this antibiotic. We recently reported structure-activity relationships of a series of 1,2,4-oxadiazole EthR inhibitors leading to the discovery of potent ethionamide boosters. Despite high metabolic stability, pharmacokinetic evaluation revealed poor mice exposure; therefore, a second phase of optimization was required. Herein a structure-property relationship study is reported according to the replacement of the two aromatic heterocycles: 2-thienyl and 1,2,4-oxadiazolyl moieties. This work was done using a combination of structure-based drug design and in vitro/ex vivo evaluations of ethionamide boosters on the targeted protein EthR and on the human pathogen Mycobacterium tuberculosis. Thanks to this process, we identified compound 42 (BDM41906), which displays improved efficacy in addition to high exposure to mice after oral administration.

Journal of Medicinal Chemistry published new progress about Homo sapiens. 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, Electric Literature of 1003-32-3.

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

Watanabe, Hiroaki’s team published research in Biological & Pharmaceutical Bulletin in 2020-04-30 | 2591-17-5

Biological & Pharmaceutical Bulletin published new progress about Enzyme inhibition kinetics. 2591-17-5 belongs to class thiazole, and the molecular formula is C11H8N2O3S2, Formula: C11H8N2O3S2.

Watanabe, Hiroaki; Yamaori, Satoshi; Kamijo, Shinobu; Aikawa, Kaori; Ohmori, Shigeru published the artcile< In vitro inhibitory effects of sesamin on CYP4F2 activity>, Formula: C11H8N2O3S2, the main research area is microsome CYP4F2 enzyme inhibition sesamin NADPH; CYP4F2; inactivation; inhibition; sesamin.

Sesamin is a major lignan in sesame seeds, and a recent meta-anal. of controlled trials indicated that sesamin intake decreases blood pressure. The antihypertensive effect of sesamin has been suggested to be due to sesamin-mediated suppression of 20-hydroxyeicosatetraenoic acid production catalyzed by CYP4F2. However, the detailed mechanism underlying inhibition of CYP4F2 function by sesamin remains unclear. In this study, the effects of sesamin on catalytic activity of CYP4F2 were investigated in vitro. Sesamin inhibited luciferin-4F2/3 O-dealkylase activity of recombinant human CYP4F2 with an IC50 value of 0.381μM. When preincubated in the presence of reduced NADP (NADPH) for 20 min, sesamin potentiated the inhibition of CYP4F2 activity. Moreover, kinetic anal. of the inactivation revealed that sesamin showed a preincubation time- and concentration-dependent inhibition of CYP4F2 activity yielding a maximal inactivation rate constant (kinact) value of 0.354 min-1 and half-maximal inhibitory concentration (KI) value of 1.12μM. The inactivation of CYP4F2 by sesamin required NADPH. These results indicated that sesamin is a mechanism-based inactivator of human CYP4F2.

Biological & Pharmaceutical Bulletin published new progress about Enzyme inhibition kinetics. 2591-17-5 belongs to class thiazole, and the molecular formula is C11H8N2O3S2, Formula: C11H8N2O3S2.

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

Feng, Daijun’s team published research in Organic Letters in 2019-04-05 | 1003-32-3

Organic Letters published new progress about Aldol condensation. 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, COA of Formula: C4H3NOS.

Feng, Daijun; Barton, George; Scott, Colleen N. published the artcile< Synthesis of 2,5-Dibutyl-3,6-dimethyl-1H,2H,4H,5H-pyrrolo[3,4-c]pyrrole-1,4-dione: A Diketopyrrolopyrrole Scaffold for the Formation of Alkenyldiketopyrrolopyrrole Compounds>, COA of Formula: C4H3NOS, the main research area is dibutyldimethylpyrrolopyrrole dione preparation diketopyrrolopyrrole scaffold; divinyl substituted diketopyrrolopyrrole carbon hydrogen functionalization.

This manuscript describes an unprecedented and efficient synthesis of a new DPP scaffold, 2,5-dibutyl-3,6-dimethyl-1H,2H,4H,5H-pyrrolo[3,4-c]pyrrole-1,4-dione (DMDPP), containing Me groups at the 3,6-positions as a precursor to preparing 3,6-divinyl-substituted DPP compounds Subsequently, following the synthesis of DMDPP, we performed an efficient and mild C-H functionalization of the Me groups with a variety of aromatic aldehydes to synthesize the first examples of 3,6-divinyl-substituted DPP compounds in moderate to good yields.

Organic Letters published new progress about Aldol condensation. 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, COA of Formula: C4H3NOS.

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

Kotlyar, V M’s team published research in Functional Materials in 2021 | 1003-32-3

Functional Materials published new progress about Amidines Role: RCT (Reactant), RACT (Reactant or Reagent). 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, Name: Thiazole-5-carboxyaldehyde.

Kotlyar, V. M.; Kolomoitsev, O. O.; Tarasenko, D. O.; Bondarenko, Y. H.; Butenko, S. V.; Buravov, O. V.; Kotlyar, M. I.; Roshal, A. D. published the artcile< Prospective biologically active compounds based on 5-formylthiazole>, Name: Thiazole-5-carboxyaldehyde, the main research area is thiazole pyrimidine benzimidazole chalcone preparation.

Thiazole cycle is a structural element of many compounds which have potential or already proven fungicidal, bactericidal and antiviral activity. A number of compounds and materials with promising antimicrobial effects can be functionalized by introducing the thiazole component into their composition Among them, there are photoreactive materials, complexing agents, convenient building blocks for the synthesis of biol. active compounds etc. A number of synthetic approaches, as well as optimized conditions for obtaining new thiazole-containing compounds, which have the prospect of practical application based on their physicochem. properties and potential biol. activity has been developed.

Functional Materials published new progress about Amidines Role: RCT (Reactant), RACT (Reactant or Reagent). 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, Name: Thiazole-5-carboxyaldehyde.

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

Azzarelli, Nicholas’s team published research in Inorganica Chimica Acta in 2019-04-01 | 1003-32-3

Inorganica Chimica Acta published new progress about Charge transfer transition. 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, Name: Thiazole-5-carboxyaldehyde.

Azzarelli, Nicholas; Ponnala, Shashikanth; Aguirre, Alexander; Dampf, Sara J.; Davis, Margaret P.; Ruggiero, Michael T.; Lopez Diaz, Valerie; Babich, John W.; Coogan, Michael; Korter, Timothy; Doyle, Robert P.; Zubieta, Jon published the artcile< Defining the origins of multiple emission/excitation in rhenium-bisthiazole complexes>, Name: Thiazole-5-carboxyaldehyde, the main research area is rhenium bisthiazole complex preparation fluorescence emission excitation mechanism photophys; crystal structure mol rhenium bisthiazole complex optimized DFT.

The underlying mechanism of the unusual emissive behavior of [Re(CO)3-1,1-bis-4-thiazole-(1,4)-diaminobutane] bromide (4-BT) has been investigated. Synthesis and spectroscopic characterization of structurally similar isomers [Re(CO)3-1,1-bis-2-thiazole-(1,4)-diaminobutane] bromide (2-BT) and the location of triplet states, solid state and low temperature spectroscopic measurements, and DFT calculations show that the photophys. properties are not due to photoisomerization as previously hypothesized. The results show that the unusual emissive behavior is not observed in structural isomers, is specific to the previously reported complex, 4-BT, and may arise from vibrational energy relaxation and vibrational cooling. Translation of the unusual emissive behavior to the solid state offers an interesting platform allowing this complex to be potentially utilized as a probe, sensor or photonic device.

Inorganica Chimica Acta published new progress about Charge transfer transition. 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, Name: Thiazole-5-carboxyaldehyde.

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