Category: thiazole

Ostrovskii, Vladimir S.; Beletskaya, Irina P.; Titanyuk, Igor D. published the artcile< Trifluoroacetaldehyde N-Tosylhydrazone as a Precursor of Trifluorodiazoethane in Reactions of Insertion into the Heteroatom-Hydrogen Bond>, Synthetic Route of 96-53-7, the main research area is trifluoroacetaldehyde tosylhydrazone trifluorodiazoethane insertion reaction copper catalyst.

Trifluorodiazoethane is a widely explored trifluoroethylating reagent, which is suitable for the preparation of a large number of fluorine-containing organic mols. Nevertheless, CF3CHN2 has some disadvantages, such as volatility, storage instability, toxicity, and explosiveness. Herein, the application of trifluoroacetaldehyde N-tosylhydrazone as a CF3CHN2 precursor capable of generating in situ trifluorodiazoethane under mild basic conditions is reported. Copper-catalyzed P-H, O-H, S-H, and C-H insertion reactions of trifluoroacetaldehyde N-tosylhydrazone revealed its wide applicability in the synthesis of trifluoroethyl-containing substances.

Organic Letters published new progress about Carboxylic acids Role: RCT (Reactant), RACT (Reactant or Reagent). 96-53-7 belongs to class thiazole, and the molecular formula is C3H5NS2, Synthetic Route of 96-53-7.

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

Bold, Guido; Faessler, Alexander; Capraro, Hans-Georg; Cozens, Robert; Klimkait, Thomas; Lazdins, Janis; Mestan, Juergen; Poncioni, Bernard; Roesel, Johannes; Stover, David; Tintelnot-Blomley, Marina; Acemoglu, Figan; Beck, Werner; Boss, Eugen; Eschbach, Martin; Huerlimann, Thomas; Masso, Elvira; Roussel, Serge; Ucci-Stoll, Katharina; Wyss, Dominique; Lang, Marc published the artcile< New Aza-Dipeptide Analogs as Potent and Orally Absorbed HIV-1 Protease Inhibitors: Candidates for Clinical Development>, Formula: C10H7NOS, the main research area is human immunodeficiency virus protease inhibitor azapeptide; azadipeptide analog preparation HIV protease inhibitor; azapeptide analog preparation antiviral.

On the basis of previously described X-ray studies of an enzyme/aza-dipeptide complex, aza-dipeptide analogs, e.g. I (R1 = Ph, pyrid-2-yl, thiazol-2-yl, thiazol-5-yl, diethylamino, 2-methyl-2H-tetrazol-5-yl, 2-tert-butyl-2H-tetrazole-5-yl; R2, R3 = iso-Pr, sec-Bu, tert-Bu; R4 = MeO, EtO) carrying N-(bis-aryl-methyl) substituents on the (hydroxyethyl)hydrazine moiety have been designed and synthesized as HIV-1 protease inhibitors. By using either equally or orthogonally protected dipeptide isosteres, sym. and asym. acylated aza-dipeptides can be synthesized. This approach led to the discovery of very potent inhibitors with antiviral activities (ED50) in the subnanomolar range. Acylation of the (hydroxyethyl)hydrazine dipeptide isostere with N-(methoxycarbonyl)-L-tert-leucine increased the oral bioavailability significantly when compared to the corresponding L-valine or L-isoleucine derivatives The bis(L-tert-leucine) derivatives I (R1 = Ph (CGP 75355), pyrid-2-yl (CGP 73547), thiazol-2-yl (CGP 75136), 2-methyl-2H-tetrazol-5-yl (CGP 75176); R2 = R3 = tert-butyl; R4 = OMe) combine excellent antiviral activity with high blood concentration after oral administration. Furthermore, they show no cross-resistance with saquinavir-resistant strains and maintain activity against indinavir-resistant ones. Consequently they qualify for further profiling as potential clin. candidates.

Journal of Medicinal Chemistry published new progress about Antiviral agents. 198904-53-9 belongs to class thiazole, and the molecular formula is C10H7NOS, Formula: C10H7NOS.

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

Takeda, Norihiko; Taguchi, Tomoyo; Nakajima, Takeshi; Azuma, Mitsuyoshi published the artcile< Design, synthesis and biological activity evaluation of thiazolidinones containing alkynyl and alkenyl furans for disrupting protein-protein interactions between HIF-1α and p300>, Reference of 10574-69-3, the main research area is thiazolidinone furanylidene preparation HIF1alpha p300 interaction inhibitor.

Based on the structure of the potent hypoxia-inducible factor (HIF) inhibitor, a novel series of furanylidene thiazolidinones I (R1 = trimethylsilylethynyl, triethylsilylethynyl, cyclopropylethynyl, etc.; R2 = C6H5,CH2NMe2, CH2C6H5, etc.) were designed and synthesized using Sonogashira or Suzuki-Miyaura cross-couplings, and subsequent Knoevenagel condensation. In particular, derivatives I (R1 = trimethylsilylethynyl, t-butylethynyl, cyclopropylethynyl, t-butylethenyl, cyclopropylethenyl; R2 = C6H5,CH2(4-methylpiperazin-1-yl)) bearing an alkynyl or alkenyl group on the furan ring, exhibited four- to five-fold higher activities than II. These potent compounds will serve as leads for the development of novel small mols. for targeting the HIF-1α/p300 complex.

Heterocycles published new progress about Alkynes, α- Role: RCT (Reactant), RACT (Reactant or Reagent). 10574-69-3 belongs to class thiazole, and the molecular formula is C10H9NOS2, Reference of 10574-69-3.

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

Jaffett, Victor A.; Nerurkar, Alok; Cao, Xufeng; Guzei, Ilia A.; Golden, Jennifer E. published the artcile< Telescoped synthesis of C3-functionalized (E)-arylamidines using Ugi-Mumm and regiospecific quinazolinone rearrangements>, Application In Synthesis of 1003-32-3, the main research area is arylamidine stereoselective preparation; azidobenzoic acid isocyanide aldehyde bismethylaminoethane Ugi Mumm regiospecific rearrangement.

An efficient four-step, six-transformation protocol was developed to afford bioactive N-alkyl- or N-arylamide (E)-arylamidines I (R1 = Cy, 4-OMeC6H4, i-Pr, etc.; R2 = i-Pr, i-Bu, H, etc.; R3 = H, 5-CH3, 5-F, etc.) featuring strategic amidine C3 modifications which were inaccessible or low yielding by previous methods. This synthetic approach, exemplified with 24 amidines and requiring only a single purification, highlights a multicomponent Ugi-Mumm rearrangement to afford highly diversified quinazolinones which undergo regiospecific rearrangement to afford new amidines. The method extensively broadens the structural scope of this new class of trisubstituted amidines and demonstrates the tolerance of regional C3 amidine steric bulk, visualized with X-ray crystallog. anal.

Organic & Biomolecular Chemistry published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, Application In Synthesis of 1003-32-3.

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

Kerdesky, Francis A. J.; Seif, Louis S. published the artcile< Catalytic hydrogenation of halothiazoles>, Related Products of 1003-32-3, the main research area is halothiazole hydrogenation dechlorination palladium catalyst.

The hydrogenation of halothiazoles I (R = R1 = H, R2 = Br; R = R1 = Br, R2 = H; R = R2 = Br, Cl, R1 = CHO, CH2OH) to I (R = R2 = H, R1 = H, CHO, CH2OH) is described. The best results were obtained utilizing 10% palladium on carbon as catalyst at four atmospheres of pressure with the bromide derivatives

Synthetic Communications published new progress about Dechlorination. 1003-32-3 belongs to class thiazole, and the molecular formula is C4H3NOS, Related Products of 1003-32-3.

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

Luo, Jinqiu; Yang, Jinfeng; Li, Guangjie; Yang, Sheng; Zhou, Yibo; Li, Jun-Bin; Huang, Ge; Hu, Yibo; Zou, Shuangfa; Zeng, Qinghai; Yang, Ronghua published the artcile< Noncovalently Caged Firefly Luciferins Enable Amplifiable Bioluminescence Sensing of Hyaluronidase-1 Activity in Vivo>, Product Details of C11H8N2O3S2, the main research area is noncovalently caged firefly luciferins bioluminescence sensor hyaluronidase 1; bioluminescence; enzymatic assay; hyaluronidase; in vivo bioimaging; nanosensor; signal amplification.

Hyaluronidase 1 (Hyal-1) is an important enzyme involved in intracellular hyaluronic acid (HA) catabolism for performing various physiol. functions, and its aberrant level is closely associated with many malignant diseases. Bioluminescence imaging is advantageous for monitoring Hyal-1 activity in vivo, but it remains challenging to design an available probe for differentiating Hyal-1 from other isoforms by a traditional strategy that covalently masks the firefly luciferase substrate. Herein, we, for the first time, present a noncovalently caging approach to construct a Hyal-1-specific bioluminogenic nanosensor by entrapping D-luciferin (D-Luc) inside the cholesterylamine-modified HA (CHA) nanoassembly to inhibit the bioluminescence production When encountered with intracellular Hyal-1, CHA could be fully dissembled to liberate multiple copies of the loaded D-Luc, thereby emitting light by the luciferase-catalyzed bioluminescence reaction. Because of its cascade signal amplification feature, D-Luc@CHA displayed a remarkable “”turn-on”” response (248-fold) to 5μg/mL Hyal-1 with a detection limit of 0.07 ng/mL. Importantly, bioluminescence imaging results validated that D-Luc@CHA could be competent for dynamically visualizing endogenous Hyal-1 changes in living cells and animals and possessed the capability of discriminating between normal and cancer cells, thus offering a promising toolbox to evaluate Hyal-1 roles in biol. processes as well as to diagnose Hyal-1-related diseases.

ACS Sensors published new progress about Bioluminescent imaging. 2591-17-5 belongs to class thiazole, and the molecular formula is C11H8N2O3S2, Product Details of C11H8N2O3S2.

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

Geary, Gemma C.; Nortcliffe, Andrew; Pearce, Christopher A.; Hamza, Daniel; Jones, Geraint; Moody, Christopher J. published the artcile< Densely functionalised spirocyclic oxetane-piperidine scaffolds for drug discovery>, Recommanded Product: Thiazole-5-carboxyaldehyde, the main research area is spirocyclic oxetane piperidine scaffold preparation rearrangement gold catalyst.

A spirocyclic, sp3-atom rich oxetane-containing scaffold was synthesized in just two steps via a gold catalyzed propargylic alc. rearrangement. The key gold cyclization can be undertaken on a 40 g scale allowing the preparation of 419 lead-like compounds based on the scaffold for the European Lead Factory.

Bioorganic & Medicinal Chemistry published new progress about Oxetanes Role: SPN (Synthetic Preparation), PREP (Preparation) (spirocyclic). 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

Nitsche, Christoph; Schreier, Verena N.; Behnam, Mira A. M.; Kumar, Anil; Bartenschlager, Ralf; Klein, Christian D. published the artcile< Thiazolidinone-Peptide Hybrids as Dengue Virus Protease Inhibitors with Antiviral Activity in Cell Culture>, Application of C10H9NOS2, the main research area is thiazolidindione rhodanine peptide preparation antiviral dengue virus protease inhibitor.

The protease of dengue virus is a promising target for antiviral drug discovery. We here report a new generation of peptide-hybrid inhibitors of dengue protease that incorporate N-substituted 5-arylidenethiazolidinone heterocycles (rhodanines and thiazolidinediones) as N-terminal capping groups of the peptide moiety. The compounds were extensively characterized with respect to inhibition of various proteases, inhibition mechanisms, membrane permeability, antiviral activity, and cytotoxicity in cell culture. A sulfur/oxygen exchange in position 2 of the capping heterocycle (thiazolidinedione-capped vs rhodanine-capped peptide hybrids) has a significant effect on these properties and activities. The most promising in vitro affinities were observed for thiazolidinedione-based peptide hybrids containing hydrophobic groups with Ki values between 1.5 and 1.8 μM and competitive inhibition mechanisms. Rhodanine-capped peptide hybrids with hydrophobic substituents have, in correlation with their membrane permeability, a more pronounced antiviral activity in cell culture than the thiazolidinediones.

Journal of Medicinal Chemistry published new progress about Antiviral agents. 10574-69-3 belongs to class thiazole, and the molecular formula is C10H9NOS2, Application of C10H9NOS2.

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

Baiget, Jessica; Cosp, Annabel; Galvez, Erik; Gomez-Pinal, Loreto; Romea, Pedro; Urpi, Felix published the artcile< On the influence of chiral auxiliaries in the stereoselective cross-coupling reactions of titanium enolates and acetals>, Computed Properties of 171877-39-7, the main research area is acylthiazolidinethione titanium enolate coupling acetal.

Titanium enolates from chiral N-propanoyl-1,3-thiazolidine-2-thiones containing bulky substituents at C-4 turned out to be excellent platforms to get highly stereocontrolled cross-coupling reactions with acetals. Related oxazolidinethiones also afforded good results, but the corresponding oxazolidinones were completely unselective for such reactions, which proves that an exocyclic C=S bond is essential to attain a synthetically useful stereocontrol.

Tetrahedron published new progress about Acetals Role: RCT (Reactant), RACT (Reactant or Reagent). 171877-39-7 belongs to class thiazole, and the molecular formula is C10H11NS2, Computed Properties of 171877-39-7.

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

Abbas, Zaid M.; Tawfilas, Massimo; Khani, Mohammed M.; Golian, Karl; Marsh, Zachary M.; Jhalaria, Mayank; Simonutti, Roberto; Stefik, Morgan; Kumar, Sanat K.; Benicewicz, Brian C. published the artcile< Reinforcement of polychloroprene by grafted silica nanoparticles>, Product Details of C3H5NS2, the main research area is reinforcement polychloroprene grafted silica nanoparticle.

Reversible addition-fragmentation chain transfer polymerization of chloroprene on the surface of silica nanoparticles was performed to obtain polychloroprene-grafted-silica nanoparticles (PCP-g-SiO2 NPs). These particles were dispersed in a com. polychloroprene matrix to obtain PCP nanocomposites with different silica core loadings (1, 5, 10, and 25 wt%). Two different chain graft densities were studied (“”low,”” 0.022 ch/nm2 and “”high,”” 0.21 ch/nm2) as a function of the grafted polymer mol. mass. The cured samples showed significant improvement in the mech. properties of the PCP rubber nanocomposites as compared to the unfilled PCP as measured by standard tensile and dynamic mech. anal. even with low silica content. The mech. properties of the nanocomposites were notably enhanced when the graft d. was low and grafted mol. masses were high. Transmission electron microscopy (TEM) and Small-Angle X-ray Scattering (SAXS) were used to analyze the dispersion states of the grafted nanoparticles which confirmed the correlation between high grafted chain lengths and improved dispersion states and mech. properties.

Polymer published new progress about Crosslink density. 96-53-7 belongs to class thiazole, and the molecular formula is C3H5NS2, Product Details of C3H5NS2.

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