Day: November 4, 2022

Bento-Silva, Andreia; Duarte, Noelia; Santos, Magda; Costa, Carina Pedrosa; Vaz Patto, Maria Carlota; Rocha, Silvia M.; Bronze, Maria Rosario published an article in 2022, the title of the article was Comprehensive two-dimensional gas chromatography as a powerful strategy for the exploration of Broas volatile composition.Name: 2-Acetylthiazole And the article contains the following content:

Broa is a Portuguese maize bread with characteristic sensory attributes that can only be achieved using traditional maize varieties. This study intends to disclose the volatile compounds that are mainly associated with the baking process of broas, which can be important contributors to their aroma. Twelve broas were prepared from twelve maize flours (eleven traditional maize varieties and one com. hybrid). Their volatile compounds were analyzed by GCxGC-ToFMS (two-dimensional gas chromatog. coupled with time-of-flight mass spectrometry) for an untargeted screening of the chem. compounds mainly formed during baking. It was possible to identify 128 volatiles that belonged to the main chem. families formed during this stage. Among these, only 16 had been previously detected in broas. The most abundant were furans, furanones, and pyranones, but the most relevant for the aroma of broas were ascribed to sulfur-containing compounds, in particular di-Me trisulfide and methanethiol. Pyrazines might contribute neg. to the aroma of broas since they were present in higher amounts in the com. broa. This work constitutes the most detailed study of the characterization of broas volatile compounds, particularly those formed during the Maillard reaction. These findings may contribute to the characterization of other maize-based foodstuffs, ultimately improving the production of foods with better sensory features. The experimental process involved the reaction of 2-Acetylthiazole(cas: 24295-03-2).Name: 2-Acetylthiazole

The Article related to broa volatile composition two dimensional gas chromatog, maillard reaction, baking, broa, comprehensive two-dimensional gas chromatography, maize, maize bread, volatiles, Food and Feed Chemistry: Cereals and Bakery Products and other aspects.Name: 2-Acetylthiazole

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

On July 31, 2006, Wu, Chunying; Cai, Lisheng; Wei, Jingjun; Pike, Victor W.; Wang, Yanming published an article.Quality Control of 2-(4-Aminophenyl)-6-methylbenzothiazole The title of the article was Lipophilic analogs of thioflavin S as novel amyloid-imaging agents. And the article contained the following:

Lipophilic analogs of thioflavin S were synthesized and radiolabeled with positron or single photon emitting radionuclides. The binding affinity for Aβ was evaluated using isolated amyloid fibrils from human brain tissue. Binding specificity was assessed using fluorescent tissue staining. In vivo brain uptake was evaluated in mice. Following synthesis, neutral analogs of thioflavin S capable of radiolabeling with 11C or 125I, were found to bind isolated human Aβ with affinities in the nanomolar range. Fluorescent tissue staining showed selective binding to Aβ deposits in vitro. Biodistribution of selected compounds displayed high brain permeability at early time points. At later points, the compounds were cleared from the normal brain, indicating low non-specific binding in vivo. These studies indicated that novel amyloid imaging probes can be developed based on thioflavin S that readily entered the brain and selectively bound to Aβ deposits and neurofibrilary tangles. Potential applications of these amyloid binding agents include facilitating drug screening in animal models and use as in vivo markers of early and definitive diagnosis of AD. The experimental process involved the reaction of 2-(4-Aminophenyl)-6-methylbenzothiazole(cas: 92-36-4).Quality Control of 2-(4-Aminophenyl)-6-methylbenzothiazole

The Article related to thioflavin s lipophilic analog amyloid imaging agent, Radiation Biochemistry: Disease Diagnosis and Therapy and other aspects.Quality Control of 2-(4-Aminophenyl)-6-methylbenzothiazole

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

On June 6, 2013, Ali-Torres, Jorge; Rimola, Albert; Rodriguez-Rodriguez, Cristina; Rodriguez-Santiago, Luis; Sodupe, Mariona published an article.Name: 2-(4-Aminophenyl)-6-methylbenzothiazole The title of the article was Insights on the Binding of Thioflavin Derivative Markers to Amyloid-Like Fibril Models from Quantum Chemical Calculations. And the article contained the following:

Thioflavin-T (ThT) is one of the most widely used dyes for staining and identifying amyloid fibrils, which share a common parallel in register β-sheet structure. Unfortunately, ThT is a charged mol., which limits its ability to cross the blood brain barrier and its use as an efficient dye for in vivo detection of amyloid fibrils. For this reason, several uncharged ThT derivatives have been designed and their binding properties to Aβ fibrils studied by fluorescence assays. However, there are still many unknowns on the binding mechanism and the role of noncovalent interactions on the affinity of these ligands toward β-sheet structures. The present contribution analyzes the binding of ThT (1) and neutral ThT derivatives (2-7) to a β-sheet model by means of quantum chem. B3LYP-D calculations and including solvent effects with the continuum CPCM method. Results show that, in all cases, ligand binding is mainly driven by dispersion interactions. In addition, ligands with -NH groups display hydrogen bond interactions with CO groups of the peptide strand, increasing the intrinsic affinity toward the β-sheet surface. Solvent effects notably reduce the affinity of charged ThT, as compared to neutral systems, due to its larger solvation energy. As a result, neutral derivatives display significantly higher affinities than ThT in solution, in agreement with exptl. observations. Anal. of the hydrogen bonding network of the β-sheet structure indicates that stacking interactions upon ligand binding induce a shortening of interstrand hydrogen bonding, suggesting a strengthening of the β-sheet. The experimental process involved the reaction of 2-(4-Aminophenyl)-6-methylbenzothiazole(cas: 92-36-4).Name: 2-(4-Aminophenyl)-6-methylbenzothiazole

The Article related to thioflavin derivative amyloid fibril model quantum chem, General Biochemistry: Proteins and Their Constituents and other aspects.Name: 2-(4-Aminophenyl)-6-methylbenzothiazole

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

On August 15, 2010, Hu, Wan-Ping; Chen, Yin-Kai; Liao, Chao-Cheng; Yu, Hsin-Su; Tsai, Yi-Min; Huang, Shu-Mei; Tsai, Feng-Yuan; Shen, Ho-Chuan; Chang, Long-Sen; Wang, Jeh-Jeng published an article.COA of Formula: C14H12N2S The title of the article was Synthesis, and biological evaluation of 2-(4-aminophenyl)benzothiazole derivatives as photosensitizing agents. And the article contained the following:

Photodynamic therapy (PDT) employing exogenous photosensitizers is currently being approved for treatment of basal cell carcinoma (BCC). 2-(4-Aminophenyl)benzothiazoles (6) consist of chromophoric structure and absorb light in the UVA (315-400 nm). These results encouraged us to design and synthesize a diversity of 2-phenylbenzothiazoles (6). Studies on the apoptotic mechanism involved in photosensitive effects induced by UVA-activated 6 in BCC cells are carried out in the present article. 6-UVA-treated cells displayed several features of apoptosis, including an increase in the sub-G1 population, a significantly increased annexin V binding, and activation of caspase-3. 6-UVA induced a decrease in mitochondrial membrane potential (Δψ mt) and ATP via enhanced ROS generation and promoted phosphorylation of extracellular signal-regulated kinase (ERK) and p38 MAPK expression. These results suggest that 6-UVA elicits photosensitive effects in mitochondria processes which involve ERK and p38 activation, and ultimately lead to BCC cell apoptosis. The experimental process involved the reaction of 2-(4-Aminophenyl)-6-methylbenzothiazole(cas: 92-36-4).COA of Formula: C14H12N2S

The Article related to aminophenyl benzothiazole derivative preparation pdt photosensitizer, Radiation Biochemistry: Disease Diagnosis and Therapy and other aspects.COA of Formula: C14H12N2S

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

On April 30, 2015, Ambure, Pravin; Roy, Kunal published an article.Category: thiazole The title of the article was Exploring Structural Requirements of Imaging Agents Against Aβ Plaques in Alzheimer’s Disease: A QSAR Approach. And the article contained the following:

Exploring mol. imaging agents against the beta amyloid (Aβ) plaques for an early detection of Alzheimer’s disease (AD) is one of the emerging research areas in medicinal chem. In the present in-silico study, a congeneric series of 44 imaging agents, including 17 positron emission tomog. (PET) and 27 single photon emission computed tomog. (SPECT) imaging agents, was utilized to understand the structural features required for having essential binding affinity against Aβ plaques. Here, 2D-quant. structure-activity relationship (2D-QSAR) and group-based QSAR (G-QSAR) models have been developed using genetic function approximation (GFA) and validated using various statistical metrics. Both the models showed satisfactory performance signifying the reliability and robustness of the developed QSAR models. The vital information gained from both the QSAR models will be useful in developing new PET and SPECT imaging agents and also in predicting their binding affinity against Aβ plaques. The results of this study would be important in view of the widespread clin. applicability of the SPECT imaging agents, especially in the developing countries. In this study, we have also designed some imaging agents based on the information provided by the models. Some of these designed compounds were predicted to be similar to or more active than the most active imaging agents present in the original dataset. The experimental process involved the reaction of 2-(4-Aminophenyl)-6-methylbenzothiazole(cas: 92-36-4).Category: thiazole

The Article related to amyloid beta plaque alzheimer disease radiodiagnostic pet spect qsar, Radiation Biochemistry: Disease Diagnosis and Therapy and other aspects.Category: thiazole

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

On June 24, 2010, Tzanopoulou, Stamatia; Sagnou, Marina; Paravatou-Petsotas, Maria; Gourni, Eleni; Loudos, George; Xanthopoulos, Stavros; Lafkas, Daniel; Kiaris, Hippokratis; Varvarigou, Alexandra; Pirmettis, Ioannis C.; Papadopoulos, Minas; Pelecanou, Maria published an article.Application of 92-36-4 The title of the article was Evaluation of Re and 99mTc Complexes of 2-(4′-Aminophenyl)benzothiazole as Potential Breast Cancer Radiopharmaceuticals. And the article contained the following:

The synthesis of M(I)(CO)3(NNO) (M = Re, 99mTc) complexes conjugated to the antitumor agent 2-(4′-aminophenyl)benzothiazole and to its 6-Me derivative, as well as their in vitro and in vivo biol. evaluation as breast cancer radiopharmaceuticals, is reported. The Re complexes displayed under the fluorescence microscope clear uptake by the sensitive to the 2-(4′-aminophenyl)benzothiazole pharmacophore breast cancer cell lines MCF-7 and T47D, while uptake by less sensitive lines and by normal fibroblasts was much weaker. In accordance, uptake of the corresponding radioactive 99mTc complexes was clearly higher in the breast cancer cell lines MCF-7 and MDA-231 compared to normal fibroblasts. Biodistribution of the 99mTc complexes in SCID mice bearing MCF-7 xenografts showed appreciable tumor uptake. A tumor/muscle ratio of 2.2 was measured for the complex conjugated to 2-(4′-aminophenyl)benzothiazole that led to successful tumor imaging. The results render the 2-(4′-aminophenyl)benzothiazole complexes potential candidates for imaging (99mTc) and targeted radiotherapy (188Re) of breast cancer. The experimental process involved the reaction of 2-(4-Aminophenyl)-6-methylbenzothiazole(cas: 92-36-4).Application of 92-36-4

The Article related to rhenium technetium aminophenyl benzothiazole preparation breast cancer imaging radiotherapy, Radiation Biochemistry: Disease Diagnosis and Therapy and other aspects.Application of 92-36-4

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

On July 20, 2007, Kim, Mi Kyoung; Choo, Il Han; Lee, Hyo Sun; Woo, Jong Inn; Chong, Youhoon published an article.Safety of 2-(4-Aminophenyl)-6-methylbenzothiazole The title of the article was 3D-QSAR of PET agents for imaging β-amyloid in Alzheimer’s disease. And the article contained the following:

The accumulation of excess senile plaques (β-amyloid, Aβ-plaques) in the brain is strongly associated with the pathogenesis of Alzheimer’s disease (AD). While there are no definitive treatments available to affect a cure of AD, much recent interest has been given to the development of antiamyloid therapies aimed at halting and reversing Aβ-deposition and, thus, monitoring of the therapeutic efficacy would greatly benefit from methods for the in vivo detection and quantification of Aβ-deposits in the brain. A 3D-QSAR model was constructed with several PET ligands such as Thioflavin-T analogs and stilbene derivatives using CoMFA (Comparative Mol. Field Anal.) and CoMSIA (Comparative Mol. Similarity Indexes Anal.). The 3D-QSAR model could be applied to predict binding affinity of the structurally related compounds against Aβ-plaques. The experimental process involved the reaction of 2-(4-Aminophenyl)-6-methylbenzothiazole(cas: 92-36-4).Safety of 2-(4-Aminophenyl)-6-methylbenzothiazole

The Article related to beta amyloid pet imaging agent qsar model, thioflavin stilbene derivative amyloid plaque imaging qsar, Radiation Biochemistry: Disease Diagnosis and Therapy and other aspects.Safety of 2-(4-Aminophenyl)-6-methylbenzothiazole

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

Li, Yang; Du, Zhi; Liu, Xinping; Ma, Mengmeng; Yu, Dongqin; Lu, Yao; Ren, Jinsong; Qu, Xiaogang published an article in 2019, the title of the article was Near-Infrared Activated Black Phosphorus as a Nontoxic Photo-Oxidant for Alzheimer’s Amyloid-β Peptide.Name: 2-(4-Aminophenyl)-6-methylbenzothiazole And the article contains the following content:

The inhibition of amyloid-β (Aβ) aggregation by photo-oxygenation has become an effective way of treating Alzheimer’s disease (AD). New near-IR (NIR) activated treatment agents, which not only possess high photo-oxygenation efficiency, but also show low biotoxicity, are urgently needed. Herein, for the first time, it is demonstrated that NIR activated black phosphorus (BP) could serve as an effective nontoxic photo-oxidant for amyloid-β peptide in vitro and in vivo. The nanoplatform BP@BTA (BTA: one of thioflavin-T derivatives) possesses high affinity to the Aβ peptide due to specific amyloid selectivity of BTA. Importantly, under NIR light, BP@BTA can significantly generate a high quantum yield of singlet oxygen (1O2) to oxygenate Aβ, thereby resulting in inhibiting the aggregation and attenuating Aβ-induced cytotoxicity. In addition, BP could finally degrade into nontoxic phosphate, which guarantees the biosafety. Using transgenic Caenorhabditis elegans CL2006 as AD model, the results demonstrate that the 1O2-generation system could dramatically promote life-span extension of CL2006 strain by decreasing the neurotoxicity of Aβ. The experimental process involved the reaction of 2-(4-Aminophenyl)-6-methylbenzothiazole(cas: 92-36-4).Name: 2-(4-Aminophenyl)-6-methylbenzothiazole

The Article related to nearir black phosphorus photooxidant alzheimer’s amyloid, alzheimer’s disease, amyloid-β, black phosphorus, nontoxic photo-oxidants, photo-oxygenation, singlet oxygen, Radiation Biochemistry: Disease Diagnosis and Therapy and other aspects.Name: 2-(4-Aminophenyl)-6-methylbenzothiazole

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

On July 31, 2022, Wang, Jing; Chen, Le; Liu, Ying; Olajide, Tosin Michael; Jiang, Yuanrong; Cao, Wenming published an article.Quality Control of 2-Acetylthiazole The title of the article was Identification of key aroma-active compounds in beef tallow varieties using flash GC electronic nose and GC x GC-TOF/MS. And the article contained the following:

To uncover the integral flavor characteristics and individual odor active compounds in tallow derived from different beef fats: inguinal (IF), omental (OF), and perirenal fats (PF), we used flash GC electronic nose (flash GC E-nose) to analyze and characterize the samples. GC x GC-TOF/MS identified and quantified 195 volatile compounds with significant differences amongst the three kinds of fats. There were 45 important odorants (ROAV > 0.1) containing 23 key odorants (ROAV > 1), of which 43, 34, 35 important odorants were found in IF, OF, and PF, resp. Our results showed that the key odorants overall probably contribute to a fatty and sweat acid smell in IF, a meaty and slightly sweet taste in OF, and sweetness and slightly meaty taste in PF. Elucidating the distribution of key odorants in beef tallow from different parts of animals could provide a scientific basis for formulating and selecting raw materials of high-quality beef tallow flavor products. The experimental process involved the reaction of 2-Acetylthiazole(cas: 24295-03-2).Quality Control of 2-Acetylthiazole

The Article related to aroma active compound beef gc electronic nose, Food and Feed Chemistry: Meat, Eggs, Fish, and Seafood and other aspects.Quality Control of 2-Acetylthiazole

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

On January 31, 2023, Shen, Dong-Yu; Li, Meng-Ke; Zhao, Mu; Li, Jie; Cui, Xinyue; Zou, Ting-Ting; Song, Huan-Lu; Xiong, Jian; Li, Ku published an article.Reference of 2-Acetylthiazole The title of the article was Characterization of key odor-active compounds in pure chicken powder and the effect of yeast extract, using instrumental and sensory techniques. And the article contained the following:

Pure chicken powder (PCP) is a reliable source of mellow chicken soup flavor in seasoning, but it has some unstable compounds and is prone to lipid oxidation, which leads to unpleasant odor. Adding yeast extract (YE) can reduce the off-odor intensity of PCP. Based on the results of gas chromatog.-olfactometry-mass spectrometry (GC-O-MS), two-dimensional comprehensive gas chromatog.-olfactometry-mass spectrometry (GCxGC-O-MS) and combined aroma extract dilution anal. (AEDA), 14 key odor-active compounds were identified. Internal standard curve method was used for quant. anal., and the odor activity value (OAV) was calculated Octanal, 1-octen-3-ol and hexanal were found to be the most vital odor-active compounds in PCP. The odor-active compounds of YE were studied by the same method, and di-Me trisulfide was identified as the most important odor-active compound of YE. Addnl., recombination and omission experiments were carried out with PCP. Finally, it was found that a low concentration of di-Me trisulfide had masking effect on the odor of PCP. The experimental process involved the reaction of 2-Acetylthiazole(cas: 24295-03-2).Reference of 2-Acetylthiazole

The Article related to yeast extract gas chromatog olfactometry mass spectrometry, Food and Feed Chemistry: Meat, Eggs, Fish, and Seafood and other aspects.Reference of 2-Acetylthiazole

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