Month: October 2022

Stenholm, Aake’s team published research in Environmental Technology in 2019 | CAS: 30931-67-0

ABTS Diammonium(cas: 30931-67-0) belongs to anime. To avoid the problem of multiple alkylation, methods have been devised for “blocking” substitution so that only one alkyl group is introduced. The Gabriel synthesis is one such method; it utilizes phthalimide, C6H4(CO)2NH, whose one acidic hydrogen atom has been removed upon the addition of a base such as KOH to form a salt.Formula: C18H24N6O6S4

The author of 《Removal of diclofenac from a non-sterile aqueous system using Trametes versicolor with an emphasis on adsorption and biodegradation mechanisms》 were Stenholm, Aake; Hedeland, Mikael; Arvidsson, Torbjoern; Pettersson, Curt E.. And the article was published in Environmental Technology in 2019. Formula: C18H24N6O6S4 The author mentioned the following in the article:

This paper describes the search for procedures through which the xenobiotic pollutant diclofenac can be removed from non-sterile aquatic systems. Specifically, adsorption to solid supports (carriers) in combination with biodegradation by non-immobilized and immobilized white rot fungus Trametes versicolor were investigated. Batch experiments using polyurethane foam (PUF)-carriers resulted in 99.9% diclofenac removal after 4 h, with monolayer adsorption of diclofenac to carrier and glass surfaces accounting for most of the diclofenac decrease. Enzymic reactions contributed less, accounting for approx. < 0.5% of this decrease. In bioreactor experiments using PUF-carriers, an initial 100% removal was achieved with biodegradation contributing approx. 7%. In batch experiments that utilized polyethylene-carriers with negligible immobilization of Trametes versicolor, a 98% total diclofenac removal was achieved after one week, with a biodegradation contribution of approx. 14%. Five novel enzyme-catalyzed biodegradation products were tentatively identified in the batch-wise and bioreactor experiments using full scan ultra-high-performance liquid chromatog.-quadrupole/time of flight mass spectrometry. Both reduction and oxidation products were found, with the contents estimated to be at μg L-1 concentration levels. In the experiment, the researchers used many compounds, for example, ABTS Diammonium(cas: 30931-67-0Formula: C18H24N6O6S4)

ABTS Diammonium(cas: 30931-67-0) belongs to anime. To avoid the problem of multiple alkylation, methods have been devised for “blocking” substitution so that only one alkyl group is introduced. The Gabriel synthesis is one such method; it utilizes phthalimide, C6H4(CO)2NH, whose one acidic hydrogen atom has been removed upon the addition of a base such as KOH to form a salt.Formula: C18H24N6O6S4

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

Tikhonova, Tatyana A.’s team published research in Bioorganic Chemistry in 2020 | 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.Recommanded Product: 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.

Tikhonova, Tatyana A.; Rassokhina, Irina V.; Kondrakhin, Eugeny A.; Fedosov, Mikhail A.; Bukanova, Julia V.; Rossokhin, Alexey V.; Sharonova, Irina N.; Kovalev, Georgy I.; Zavarzin, Igor V.; Volkova, Yulia A. published an article on January 31 ,2020. The article was titled 《Development of 1,3-thiazole analogues of imidazopyridines as potent positive allosteric modulators of GABAA receptors》, and you may find the article in Bioorganic Chemistry.Recommanded Product: 6-Chlorobenzothiazol-2-ylamine The information in the text is summarized as follows:

Structure-activity relationship studies were conducted in the search for 1,3-thiazole isosteric analogs of imidazopyridine drugs (Zolpidem, Alpidem). Three series of novel γ-aminobutyric acid receptor (GABAAR) ligands belonging to imidazo[2,1-b]thiazoles I [R1 = OMe, NMe2, OEt; R2 = p-chlorophenyl], [R1 = OMe, R2 = p-nitrophenyl] and [R1 = OEt, R2 = o,p-dichlorophenyl], imidazo[2,1-b][1,3,4]thiadiazoles II [R3 = OEt, NMe2, NPr2; R4 = p-chlorophenyl; R5 = Et, iso-Pr, MOM] and benzo[d]imidazo[2,1-b]thiazoles III [R6 = NH2, OEt, NMe2, NEt2, NPr2; R7 = Ph, p-fluorophenyl o,p-dimethoxyphenyl, etc.; R8 = H, Cl, OMe] were synthesized and characterized as active agents against GABAAR benzodiazepine-binding site. In each of these series, potent compounds were discovered using a radioligand competition binding assay. The functional properties of highest-affinity compounds III [R6 = NH2, R7 = p-chlorophenyl, R8 = H] and [R6 = NMe2, R7 = o-chlorophenyl, R8 = H] as GABAAR pos. allosteric modulators (PAMs) were determined by electrophysiol. measurements. In-vivo studies on zebrafish demonstrated their potential for the further development of anxiolytics. Using the OECD “”Fish, Acute Toxicity Test”” active compounds were found safe and non-toxic. Structural bases for activity of benzo[d]imidazo[2,1-b]thiazoles were proposed using mol. docking studies. The isosteric replacement of the pyridine nuclei by 1,3-thiazole, 1,3,4-thiadiazole, or 1,3-benzothiazole in the ring-fused imidazole class of GABAAR PAMs was showed to be promising for the development of novel hypnotics, anxiolytics, anticonvulsants and sedatives drug-candidates.6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Recommanded Product: 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.Recommanded Product: 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

Andersen, Carsten B.’s team published research in ACS Chemical Biology in 2008 | CAS: 3034-22-8

5-Bromothiazol-2-amine(cas: 3034-22-8) belongs to anime. Nitrous acid converts secondary amines (aliphatic or aromatic) to N-nitroso compounds (nitrosamines): R2NH + HNO2 → R2N―NO. Some nitrosamines are potent cancer-inducing substances, and their possible formation is a serious consideration when nitrites, which are salts of nitrous acid, are present in foods or pharmaceutical preparations. Tertiary amines give rise to nitrosamines more slowly; an alkyl group is eliminated as an aldehyde or ketone, along with nitrous oxide, N2O.Product Details of 3034-22-8

In 2008,Andersen, Carsten B.; Wan, Yongqin; Chang, Jae W.; Riggs, Blake; Lee, Christian; Liu, Yi; Sessa, Fabio; Villa, Fabrizio; Kwiatkowski, Nicholas; Suzuki, Melissa; Nallan, Laxman; Heald, Rebecca; Musacchio, Andrea; Gray, Nathanael S. published 《Discovery of Selective Aminothiazole Aurora Kinase Inhibitors》.ACS Chemical Biology published the findings.Product Details of 3034-22-8 The information in the text is summarized as follows:

Aurora family kinases regulate important events during mitosis including centrosome maturation and separation, mitotic spindle assembly, and chromosome segregation. Misregulation of Aurora kinases due to genetic amplification and protein overexpression results in aneuploidy and may contribute to tumorigenesis. Here we report the discovery of new small mol. aminothiazole inhibitors of Aurora kinases with exceptional kinase selectivity and report a 1.7 Å cocrystal structure with the Aurora B:INCENP complex from Xenopus laevis. The compounds recapitulate the hallmarks of Aurora kinase inhibition, including decreased histone H3 serine 10 phosphorylation, failure to complete cytokinesis, and endoreduplication. The experimental part of the paper was very detailed, including the reaction process of 5-Bromothiazol-2-amine(cas: 3034-22-8Product Details of 3034-22-8)

5-Bromothiazol-2-amine(cas: 3034-22-8) belongs to anime. Nitrous acid converts secondary amines (aliphatic or aromatic) to N-nitroso compounds (nitrosamines): R2NH + HNO2 → R2N―NO. Some nitrosamines are potent cancer-inducing substances, and their possible formation is a serious consideration when nitrites, which are salts of nitrous acid, are present in foods or pharmaceutical preparations. Tertiary amines give rise to nitrosamines more slowly; an alkyl group is eliminated as an aldehyde or ketone, along with nitrous oxide, N2O.Product Details of 3034-22-8

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

Vu, Chi B.’s team published research in Journal of Medicinal Chemistry in 2009 | CAS: 3034-22-8

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.Recommanded Product: 5-Bromothiazol-2-amine

Recommanded Product: 5-Bromothiazol-2-amineIn 2009 ,《Discovery of Imidazo[1,2-b]thiazole Derivatives as Novel SIRT1 Activators》 was published in Journal of Medicinal Chemistry. The article was written by Vu, Chi B.; Bemis, Jean E.; Disch, Jeremy S.; Ng, Pui Yee; Nunes, Joseph J.; Milne, Jill C.; Carney, David P.; Lynch, Amy V.; Smith, Jesse J.; Lavu, Siva; Lambert, Philip D.; Gagne, David J.; Jirousek, Michael R.; Schenk, Simon; Olefsky, Jerrold M.; Perni, Robert B.. The article contains the following contents:

A series of imidazo[1,2-b]thiazole derivatives is shown to activate the NAD+-dependent deacetylase SIRT1, a potential new therapeutic target to treat various metabolic disorders. This series of compounds was derived from a high throughput screening hit bearing an oxazolopyridine core. Water-solubilizing groups could be installed conveniently at either the C-2 or C-3 position of the imidazo[1,2-b]thiazole ring. The SIRT1 enzyme activity could be adjusted by modifying the amide portion of these imidazo[1,2-b]thiazole derivatives The most potent analog within this series, namely, compound 29 (I), has demonstrated oral antidiabetic activity in the ob/ob mouse model, the diet-induced obesity (DIO) mouse model, and the Zucker fa/fa rat model. The experimental process involved the reaction of 5-Bromothiazol-2-amine(cas: 3034-22-8Recommanded Product: 5-Bromothiazol-2-amine)

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.Recommanded Product: 5-Bromothiazol-2-amine

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

Liu, Jianhua’s team published research in Frontiers in Chemistry (Lausanne, Switzerland) in 2020 | 96-53-7

Frontiers in Chemistry (Lausanne, Switzerland) published new progress about Biological imaging. 96-53-7 belongs to class thiazole, and the molecular formula is C3H5NS2, Name: 4,5-Dihydrothiazole-2-thiol.

Liu, Jianhua; Kotrchova, Lenka; Lecuyer, Thomas; Corvis, Yohann; Seguin, Johanne; Mignet, Nathalie; Etrych, Tomas; Scherman, Daniel; Randarova, Eva; Richard, Cyrille published the artcile< Coating persistent luminescence nanoparticles with hydrophilic polymers for in vivo imaging>, Name: 4,5-Dihydrothiazole-2-thiol, the main research area is zinc gallium oxide chromium hydrophilic polymer optical property; HPMA polymer; imaging; in vivo; nanoparticles; persistent luminescence; surface coating.

Persistent luminescence nanoparticles (PLNPs) are innovative nanomaterials highly useful for bioimaging applications. Indeed, due to their particular optical properties, i.e., the ability to store the excitation energy before slowly releasing it for a prolonged period of time, they allow in vivo imaging without auto-fluorescence and with a high target to background ratio. However, as for most nanoparticles (NPs), without any special surface coating, they are rapidly opsonized and captured by the liver after systemic injection into small animals. To overcome this issue and prolong nanoparticle circulation in the bloodstream, a new stealth strategy was developed by covering their surface with poly(N-2-hydroxypropyl)methacrylamide (pHPMA), a highly hydrophilic polymer widely used in nanomedicine. Preliminary in vivo imaging results demonstrated the possibility of pHPMA as an alternative strategy to cover ZnGa2O4:Cr NPs to delay their capture by the liver, thereby providing a new perspective for the formulation of stealth NPs.

Frontiers in Chemistry (Lausanne, Switzerland) published new progress about Biological imaging. 96-53-7 belongs to class thiazole, and the molecular formula is C3H5NS2, Name: 4,5-Dihydrothiazole-2-thiol.

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

Lee, Hyojin’s team published research in Sensors and Actuators, B: Chemical in 2019-03-01 | 96-53-7

Sensors and Actuators, B: Chemical published new progress about Diagnosis Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 96-53-7 belongs to class thiazole, and the molecular formula is C3H5NS2, Reference of 96-53-7.

Lee, Hyojin; Kim, Ki Hun; Lee, Kwan Hyi published the artcile< Non-invasive molecular barcode assay for diagnosis of sex hormones correlated with precocious puberty>, Reference of 96-53-7, the main research area is testosterone estradiol diagnosis noninvasive mol barcode assay precocious puberty.

Precocious puberty treatment in children faces several diagnostic and therapeutic challenges. For an efficient prognosis of the disease, early diagnosis must be accompanied by properly timed treatment. Sex hormones are markers that are used to diagnose precocious puberty. Detection methods usually require multiple blood samples from the patient over a 90-120-min time interval. The test is painful and uncomfortable for children, and is relatively expensive and time-consuming. Herein, we introduce a new bio-barcode method that is a non-invasive, fast, highly-sensitive, and is capable of multiplex detection of steroid sex hormones in urine using gold nanoparticles. We compared three different barcode assay approaches to determine the barcode mols.: gel electrophoresis, fluorescence-based solution assay, and liquid chromatog.-mass spectrometry (LC-MS). The gel electrophoresis approach was cost-effective but could not quantify the absolute levels of hormones. The other methods permitted quant. comparison between samples. LC-MS displayed the highest sensitivity. For the LC-MS anal., we grafted two chem. compounds as surrogate mols. onto the surface of 50-nm gold nanoparticles. Approx. 7-9 million chem. mols. were loaded on each nanoparticle, which amplified the LC-MS signal. The LC-MS could detect hormones levels which were 10,000-fold lower than the levels detected by the conventional method. The barcode assay could determine multiple analytes simultaneously without any sample preparation step. Importantly, this is first finding that uses barcode mols.-conjugated nanoparticles to amplify the mass spectrometer signal. The result is significant as it has implications for its principle and methodol., which utilizes non-invasive procurement protocols, can be applied to not only sex hormones, but other hormones which require will ultrasensitive detection. We anticipate that our research findings, which use a painless and economic detection method, can contribute to the early and accurate diagnosis of precocious puberty.

Sensors and Actuators, B: Chemical published new progress about Diagnosis Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 96-53-7 belongs to class thiazole, and the molecular formula is C3H5NS2, Reference of 96-53-7.

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

Ormond, Alexandra B’s team published research in Dyes and Pigments in 2013-02-28 | 1003-32-3

Dyes and Pigments published new progress about Excited singlet state. 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, Product Details of C4H3NOS.

Ormond, Alexandra B.; Freeman, Harold S. published the artcile< Effects of substituents on the photophysical properties of symmetrical porphyrins>, Product Details of C4H3NOS, the main research area is singlet oxygen generation sym porphyrin photosensitizer; substituent effect photophys sym porphyrin derivative.

Porphyrin compounds having groups that mimic the phenolic moiety of m- and p-isomers of 5,10,15,20-tetrakis(hydroxyphenyl) porphyrin (THPP) have been synthesized along with 5,10,15,20-tetrakis(heteroaryl) porphyrins bearing 2-thienyl and 5-thiazolyl groups. Absorption and fluorescence spectroscopy, including fluorescence lifetime (τf) and quantum yield (Φf) measurements, were employed to characterize the singlet excited state of all compounds, using 5,10,15,20-tetraphenylporphyrin (H2TPP) as a standard (Φf = 0.12 in DMF). The generation of singlet oxygen by each porphyrin photosensitizer was measured as the singlet oxygen quantum yield (ΦΔ), using H2TPP as a standard (ΦΔ = 0.64 in DMF). Partition coefficients were determined using 2-octanol as the organic phase and PBS solution as the aqueous phase. Fluorescence quantum yields ranged from 0.01 to 0.18 for all compounds, with heteroaryl porphyrins having the lowest values. Singlet oxygen quantum yields ranged from 0.40 to 0.65, with heteroaryl porphyrins having the highest values, showing them to be better sensitizers than m- and p-THPP. Log P values were all >1 showing higher solubility in the 2-octanol layer.

Dyes and Pigments published new progress about Excited singlet state. 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, Product Details of C4H3NOS.

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

Rezania, Jafar’s team published research in Journal of Molecular Structure in 2018-06-05 | 57493-24-0

Journal of Molecular Structure published new progress about Alkyl aryl ketones Role: PRP (Properties), RCT (Reactant), RACT (Reactant or Reagent). 57493-24-0 belongs to class thiazole, and the molecular formula is C9H7N3O2S, Recommanded Product: 2-Amino-4-(3-nitrophenyl)thiazole.

Rezania, Jafar; Behzadi, Hadi; Shockravi, Abbas; Ehsani, Morteza; Akbarzadeh, Elahe published the artcile< Corrigendum to ""Synthesis and DFT calculations of some 2-aminothiazoles"" [J. Mol. Struct. 1157 (5) (April 2018) 300-305] [Erratum to document cited in CA168:135942]>, Recommanded Product: 2-Amino-4-(3-nitrophenyl)thiazole, the main research area is aminothiazole preparation green chem DFT calculation erratum; ketone aryl thiourea cyclization iodine catalyst erratum.

In the original publication, there are errors in the affiliations section; the correction is provided here.

Journal of Molecular Structure published new progress about Alkyl aryl ketones Role: PRP (Properties), RCT (Reactant), RACT (Reactant or Reagent). 57493-24-0 belongs to class thiazole, and the molecular formula is C9H7N3O2S, Recommanded Product: 2-Amino-4-(3-nitrophenyl)thiazole.

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

Nagase, Hiroshi’s team published research in Chemical & Pharmaceutical Bulletin in 1973 | 10574-69-3

Chemical & Pharmaceutical Bulletin published new progress about 10574-69-3. 10574-69-3 belongs to class thiazole, and the molecular formula is C10H9NOS2, Safety of 3-Benzyl-2-thioxothiazolidin-4-one.

Nagase, Hiroshi published the artcile< Fungicides. XXII. Reaction of dimethyl acetylenedicarboxylate with dithiocarbamates, thiolcarbamates, thiosemicarbazides, and thiosemicarbazones>, Safety of 3-Benzyl-2-thioxothiazolidin-4-one, the main research area is acetylenedicarboxylate reaction; thiocarbamate reaction acetylenedicarboxylate; thiosemicarbazide reaction acetylenedicarboxylate; thiosemicarbazone reaction acetylenedicarboxylate; thiazolidone.

Dimethyl acetylenedicarboxylate reacted readily with dithiocarbamates, thiolcarbamates, thiosemicarbazides, and thiosemicarbazones to give 4-thiazolidones [I, R = H, alkyl, PhCH2, NH2; X = S (II), O NR1 (R1 = Me, Ph, substituted-methyleneamino)]. The exo double bond of 4-thiazolidones (II) was highly reactive to dithiocarbamates to give 2,2′-dithioxo-5,5′-bi-4-thiazolidones, which were autoxidized to 2,2′-dithioxo-Δ5,5′-bi-4-thiazolidones in the presence of catalytic amount of amines.

Chemical & Pharmaceutical Bulletin published new progress about 10574-69-3. 10574-69-3 belongs to class thiazole, and the molecular formula is C10H9NOS2, Safety of 3-Benzyl-2-thioxothiazolidin-4-one.

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

Michaelis, Lars’s team published research in Synlett in 2014 | 171877-39-7

Synlett published new progress about Antibacterial agents. 171877-39-7 belongs to class thiazole, and the molecular formula is C10H11NS2, Application In Synthesis of 171877-39-7.

Michaelis, Lars; Schinzer, Dieter published the artcile< Studies toward the total synthesis of sorangicins: a shortened synthesis of the dioxabicyclo[3.2.1]octane core>, Application In Synthesis of 171877-39-7, the main research area is sorangicin preparation antibiotic antibacterial agent.

An access to the dioxabicyclo[3.2.1]octane core of 6-methyl-8-(3,3a,8,9,10,11,12,13,14,15,18,19,22,23,25,26,28,34a-octadecahydro-11,14,15-trihydroxy-10,38-dimethyl-28-oxo-9,13-epoxy-23,26-etheno-2,5-methano-2H,5H-furo[2,3-l][1,4,14]trioxacyclotritriacontin-25-yl)-7-nonenoic acid [i.e., (+)-sorangicin A] was developed, using a keto lactone formation, a Mukaiyama-Michael reaction and an epoxide opening as the key steps. The synthesis of the target compound was achieved using (4S)-4-(phenylmethyl)-2-thiazolidinethione as a chiral auxiliary. The title compound thus formed was (8E)-2,5:3,7-dianhydro-4,6,8,9-tetradeoxy-6-methyl-9-phenyl-L-glycero-L-gluco-non-8-enitol, (8E)-2,5:3,7-dianhydro-4,6,8,9-tetradeoxy-6-methyl-9-phenyl-L-glycero-L-gluco-non-8-enose.

Synlett published new progress about Antibacterial agents. 171877-39-7 belongs to class thiazole, and the molecular formula is C10H11NS2, Application In Synthesis of 171877-39-7.

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