Author: tianli

Yin, Zhiping; Zhang, Zhuan; Soule, Jean-Francois; Dixneuf, Pierre H.; Wu, Xiao-Feng published the artcile< Iron-catalyzed carbonylative alkyl-acylation of heteroarenes>, HPLC of Formula: 1003-32-3, the main research area is alkyl heteroaryl ketone preparation chemoselective; heteroarene carbon monoxide carbonylative alkyl acylation iron triflate.

Herein, an efficient carbonylative protocol for the introduction of an alkyl-acyl group into heteroarenes from cyclobutanone oximes is presented. In the presence of Fe(OTf)2 catalyst, proceeds via intermol. alkyl-acylation of different heteroarenes. A broad range of alkyl heteroaryl ketones are synthesized with excellent functional group tolerance with good chemoselectivity.

Journal of Catalysispublished new progress about Acylation (alkyl-). 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, HPLC of Formula: 1003-32-3.

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

Wu, Yikang; Sun, Ya-Ping; Yang, Yong-Qing; Hu, Qi; Zhang, Qi published the artcile< Removal of thiazolidinethione auxiliaries with benzyl alcohol mediated by DMAP>, Safety of (S)-4-Benzylthiazolidine-2-thione, the main research area is acylthiazolidinethione benzyl alc substitution DMAP; benzyl ester preparation; DMAP substitution mediator.

In the presence of DMAP, a range of N-acylthiazolidinethiones carrying different substituents were smoothly converted into benzyl esters, e.g., I. All the benzyl esters were obtained in good yields.

Journal of Organic Chemistrypublished new progress about Aldol condensation, stereoselective. 171877-39-7 belongs to class thiazole, and the molecular formula is C10H11NS2, Safety of (S)-4-Benzylthiazolidine-2-thione.

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

Lyashchuk, S. N.; Enya, V. I.; Doroshenko, T. F.; Skrypnik, Yu. G. published the artcile< Study of reaction routes in sulfonation of 2-aminothiazoles with chlorosulfonic acid>, Electric Literature of 57493-24-0, the main research area is thiazole amine sulfonation thermal isomerization thiazolesulfonic thiazolesulfamic acid preparation; charge distribution thiazole amine AM1 calculation sulfonation mechanism.

The sulfonation of 4-substituted 2-aminothiazoles with chlorosulfonic acid under mild conditions afforded primarily C-sulfonation product, 2-amino-5-thiazolesulfonic acids, which undergo thermal isomerization by heating in sulfuric acid into the corresponding stable 2-thiazolesulfamic acids. Reaction of 4-R-thiazole-2-amines (9-12) with ClSO3H gave 2-amino-4-R-thiazole-5-sulfonic acids (1-4; R = Me, 4-BrC6H4, 3-O2NC6H4, 4-ClC6H4); heating of 1-4 at 110° in concentrate H2SO4 gave 4-R-thiazole-2-sulfamic acids (5-8). Quantum chem. calculations at AM1 level revealed the presence of considerable neg. charge on the C-5 atom of the thiazole ring of 9-12, which accounts for the opposite sulfonation patterns for the aminothiazoles and aniline.

Russian Journal of Organic Chemistrypublished new progress about AM1 (molecular orbital method). 57493-24-0 belongs to class thiazole, and the molecular formula is C9H7N3O2S, Electric Literature of 57493-24-0.

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

Vilaboa, Nuria; Bore, Alba; Martin-Saavedra, Francisco; Bayford, Melanie; Winfield, Natalie; Firth-Clark, Stuart; Kirton, Stewart B.; Voellmy, Richard published the artcile< New inhibitor targeting human transcription factor HSF1: effects on the heat shock response and tumor cell survival>, Recommanded Product: 4-Cyclopropylthiazol-2-amine, the main research area is human transcription factor HSF1 inhibitor preparation heat shock antitumor.

Comparative modeling of the DNA-binding domain of human HSF1 facilitated the prediction of possible binding pockets for small mols. and definition of corresponding pharmacophores. In silico screening of a large library of lead-like compounds identified a set of compounds that satisfied the pharmacophoric criteria, a selection of which compounds was purchased to populate a biased sublibrary. A discriminating cell-based screening assay identified compound 001, which was subjected to systematic anal. of structure-activity relationships, resulting in the development of compound 115 (IHSF115). IHSF115 bound to an isolated HSF1 DNA binding domain fragment. The compound did not affect heat-induced oligomerization, nuclear localization and specific DNA binding but inhibited the transcriptional activity of human HSF1, interfering with the assembly of ATF1-containing transcription complexes. IHSF115 was employed to probe the human heat shock response at the transcriptome level. In contrast to earlier studies of differential regulation in HSF1-naive and -depleted cells, the authors’ results suggest that a large majority of heat-induced genes is pos. regulated by HSF1. That IHSF115 effectively countermanded repression in a significant fraction of heat-repressed genes suggests that repression of these genes is mediated by transcriptionally active HSF1. IHSF115 is cytotoxic for a variety of human cancer cell lines, multiple myeloma lines consistently exhibiting high sensitivity.

Nucleic Acids Researchpublished new progress about Activating transcription factor 1 Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 324579-90-0 belongs to class thiazole, and the molecular formula is C6H8N2S, Recommanded Product: 4-Cyclopropylthiazol-2-amine.

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

Uppal, Archana; Kothiyal, Preeti; Singh, Anita published the artcile< Hybrid Class Phenylthiazole and 1,2,3,4-Tetrahydronaphthalene Target Sertraline Transporter for Antidepressant Action Revealed by Molecular Docking Studies>, Application of C9H7N3O2S, the main research area is phenylthiazolyltetrahydronaphthalene derivative preparation antidepressant activity; epoxytetrahydronaphthalene preparation amine addition.

Phenylthiazolyl-substituted 1,2,3,4-tetrahydronaphthalene derivatives e. g., I, were synthesized, and their chem. structures were elucidated by Fourier transform IR, 1H-NMR, 13C-NMR spectral data and elemental analyses. Antidepressant-like activities of these compounds were screened using both Porsolt’s behavioral despair on albino mice and tail suspension tests. Open field test was also performed for the examination of probable neurol. deficits, which may interfere with the test results. The test compounds exhibited different levels of antidepressant activities. Addnl., the key ligand was further substantiated by docking experiment to explore plausible mode of binding in mol. dynamics overflow. The studies elucidates role of a hydrophilic H-bonding region and pi-cation binding as a major driving force for biol. activity.

Journal of Heterocyclic Chemistrypublished new progress about Addition reaction. 57493-24-0 belongs to class thiazole, and the molecular formula is C9H7N3O2S, Application of C9H7N3O2S.

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

Wang, Gao-peng; Wang, Li-ping; Qin, Shuang-lin; Huang, Fei-fei; Huang, Shuang-Ping; Wang, Xiao-Ji published the artcile< Construction of chiral hydroxyl of the intermediate of Strictifolione by using Evans auxiliary>, Recommanded Product: (S)-4-Benzylthiazolidine-2-thione, the main research area is benzyl thioxothiazolidinyl hydroxyphenylpentanone preparation.

An economical way for the synthesis of Evans auxiliary and chiral hydroxyl of the key intermediate of strictifolione by using Evans chiral auxiliary was reported.

Advanced Materials Research (Durnten-Zurich, Switzerland)published new progress about Chiral auxiliary. 171877-39-7 belongs to class thiazole, and the molecular formula is C10H11NS2, Recommanded Product: (S)-4-Benzylthiazolidine-2-thione.

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

Luo, Kai; Chen, Yao-Zhong; Yang, Wen-Chao; Zhu, Jie; Wu, Lei published the artcile< Cross-Coupling Hydrogen Evolution by Visible Light Photocatalysis Toward C(sp2)-P Formation: Metal-Free C-H Functionalization of Thiazole Derivatives with Diarylphosphine Oxides>, Safety of Ethyl 4-methylthiazole-5-carboxylate, the main research area is phosphorylation thiazole hydrogen evolution organic dye sensitized photocatalyst; thiazolyl diarylphosphine oxide preparation.

Visible light along with 5 mol % eosin B catalyzed the 1st direct C-H phosphorylation of thiazole derivatives with diarylphosphine oxides by a photoredox process in the absence of an external oxidant. The scope of thiazoles and phosphine oxides was further studied, as was functional group tolerance. The general and operational simplicity provides a novel metal and oxidant-free alternative for the formation of heteroaryl-P bonds, and only H2 is generated as a byproduct.

Organic Letterspublished new progress about Cross-coupling reaction (photochem.). 20582-55-2 belongs to class thiazole, and the molecular formula is C7H9NO2S, Safety of Ethyl 4-methylthiazole-5-carboxylate.

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

Rashmi, S. V.; Sandhya, N. C.; Raghava, B.; Kumara, M. N.; Mantelingu, K.; Rangappa, K. S. published the artcile< Trifluoroethanol as a metal-free, homogeneous, and recyclable medium for the efficient one-pot synthesis of dihydropyrimidones>, Recommanded Product: Thiazole-5-carboxyaldehyde, the main research area is dihydropyrimidone preparation; aldehyde ketoester urea multicomponent condensation trifluoroethanol catalyst.

Trifluoroethanol is an efficient and recyclable medium in promoting one-pot, three-component condensation reactions of β-ketoesters, aldehydes, and urea (or thiourea) to afford the corresponding dihydropyrimidones in good yields. This protocol does not require the use of an acid or base catalyst.

Synthetic Communicationspublished new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, Recommanded Product: Thiazole-5-carboxyaldehyde.

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

Feng, Xixi; Sippel, Claudia; Bracher, Andreas; Hausch, Felix published the artcile< Structure-Affinity Relationship Analysis of Selective FKBP51 Ligands>, Synthetic Route of 171877-39-7, the main research area is crystal structure FKBP protein psychiatric metabolic disorder.

The FK506-binding protein 51 (FKBP51) is a promising drug target for the treatment of stress-related psychiatric or metabolic disorders. Just recently, the first selective ligands for FKBP51 were reported based on an induced fit mechanism, but they are too large for a further drug development process. The authors therefore designed and synthesized a novel series of selective ligands to explore the requirements necessary for binding to the induced-fit conformation. All ligands of this series show no binding toward the structurally very similar antitarget FKBP52. With the cocrystal structure of the best ligand in this novel series the authors confirmed the induced fit mechanism. Furthermore, the structure-affinity relationship provides information about beneficial structural features, which is valuable for the development of improved FKBP51-directed drugs.

Journal of Medicinal Chemistrypublished new progress about Crystal structure. 171877-39-7 belongs to class thiazole, and the molecular formula is C10H11NS2, Synthetic Route of 171877-39-7.

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

Demekhin, Oleg D.; Burov, Oleg N.; Kletskii, Mikhail E.; Lisovin, Anton V.; Kurbatov, Sergey V.; Bereznyak, Elena A.; Trishina, Alena V. published the artcile< New 13-vinyl derivatives of berberine: synthesis and characterization>, Synthetic Route of 10574-69-3, the main research area is electroneutral vinyl berberine preparation antibacterial SAR density functional theory.

The possibility of obtaining electroneutral substituted 13-vinylberberines I [R = H, CH2C(O)CH3; R1 = dicyanomethyl, 1,3-dimethoxy-1,3-dioxopropan-2-yl, 2,4,6-trioxo-1,3-diazinan-5-yl, etc.] was demonstrated exptl. and via quantum-chem. DFT/B3LYP calculations in the 6-31++G(d,p) basis set. The introduction of pharmacophoric fragments conjugated through vinyl moiety opened new possibilities for structural modification of berberine, enabling pronounced changes in tropicity toward supramol. biol. structures. The newly synthesized 13-vinylberberines I were stable in their reduced form due to significant intramol. electron d. transfer from berberine ring system to the vinyl moiety bearing electron-withdrawing groups. It was demonstrated that berberine derivatives I may exist not only in ion pair form consisting of organic cation and inorganic anion, but also as zwitterionic structures featuring significant intramol. charge transfer. The obtained 13-vinylberberines I exhibited biol. activity against the highly pathogenic Vibrio cholerae.

Chemistry of Heterocyclic Compounds (New York, NY, United States)published new progress about Active methylene compounds Role: RCT (Reactant), RACT (Reactant or Reagent). 10574-69-3 belongs to class thiazole, and the molecular formula is C10H9NOS2, Synthetic Route of 10574-69-3.

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