17451-21-7

Upstream product

• 123-11-5 4-methoxy-benzaldehyde 
• 127-17-3 2-oxo-propionic acid 
• 7647-01-0 hydrogenchloride 
• 113-24-6 sodium pyruvate 
• 328-42-7 Oxalacetic acid 
• 860190-31-4 C₁₁H₉O₄^(1-)*K⁽¹⁺⁾ 

Downstream Products

• 105213-31-8 (E)-methyl 4-(4-methoxyphenyl)-2-oxobut-3-enoate 
• 98184-92-0 ethyl 2-oxo-4-(p-methoxyphenyl)but-3-enoate 
• 114991-04-7 2-hydroxy-4-(4-methoxyphenyl)butanoic acid 
• 128934-96-3 2-hydroxy-4-(4-methoxyphenyl)but-3-enoic acid 
• 110936-08-8 2-oxo-4-(4-methoxyphenyl)butanoic acid 
• 862364-06-5 3,4-dibromo-4-(4-methoxy-phenyl)-2-oxo-butyric acid 
• 123565-89-9 (Z)-2-[(3-Amino-4-oxo-3,4-dihydro-quinazolin-2-yl)-hydrazono]-4-(4-methoxy-phenyl)-but-3-enoic acid 
• 118806-86-3 (E)-2-[(Z)-5-Amino-2,6-dioxo-1,2,3,6-tetrahydro-pyrimidin-4-ylimino]-4-(4-methoxy-phenyl)-but-3-enoic acid 
• 79878-76-5 3-Mercapto-6-[(E)-2-(4-methoxy-phenyl)-vinyl]-4-phenyl-4H-[1,2,4]triazin-5-one 
• 79878-77-6 3-Mercapto-6-[(E)-2-(4-methoxy-phenyl)-vinyl]-4-p-tolyl-4H-[1,2,4]triazin-5-one 
• 158977-52-7 (E)-2-[(1-Amino-4-methyl-6-oxo-1,6-dihydro-pyrimidin-2-yl)-hydrazono]-4-(4-methoxy-phenyl)-but-3-enoic acid 
• 830-09-1 3-(4'-methoxyphenyl)propenoic acid 
• 158977-68-5 3-[(E)-2-(4-Methoxy-phenyl)-vinyl]-8-methyl-1H-pyrimido[2,1-c][1,2,4]triazine-4,6-dione 
• 158977-58-3 4-Amino-2-[(E)-2-(4-methoxy-phenyl)-vinyl]-6-methyl-4H-pyrimido[1,2-b][1,2,4]triazine-3,8-dione 

Relevant academic research and scientific papers

Doebner-type pyrazolopyridine carboxylic acids in an Ugi four-component reaction

Substituted 1H-pyrazolo[3,4-b]pyridine-4- and 1H-pyrazolo[3,4-b]pyridine-6-carboxamides have been synthetized through a Doebner-Ugi multicomponent reaction sequence in a convergent and versatile manner using diversity generation strategies: combination of

Ethanol-drop grinding approach: Cadmium oxide nanoparticles catalyzed the synthesis of [1,3]dioxolo[g][1]benzopyran-6-carboxylic acids and pyrido[d]pyrimidine-7-carboxylic acids

Aim and Objective: In the last decades, it has extensively been verified that nanostructured transition metal oxides emerge as inexpensive, available and extremely efficient heterogeneous catalysts in chemical transformations. The high electrical conductivity, high carrier concentration, and improved reactivity in cadmium oxide nanoparticles (CdO NPs) make it as a potential candidate for applications in the fields of nanocatalysis. [1]Benzopyran and pyridopyrimidine derivatives compose major classes of heterocyclic compounds, which have a wide spectrum of biological activities. Materials and Methods: In the present work, we report a facile and highly effective synthesis of 8-aryl-8H-[1,3]dioxolo[4,5-g][1]benzopyran-6-carboxylic acids and 1,3-dimethyl-2,4-dioxo-5-phenyl-1,2,3,4,5,8-hexahydropyrido[2,3-d]pyrimidine-7-carboxylic acids via CdO NPs catalyzed cyclo condensation reaction of 4-substituted phenylmethylidenepyruvic acids with 3,4-methylenedioxyphenol or 6-amino-1,3-dimethyluracil, which was accomplished under ethanol-drop grinding at room temperature. The described catalyst was prepared successfully by a simple precipitation method and characterized by the Fourier transformed infrared absorption (FT-IR) spectroscopy, X-Ray diffraction (XRD) analytical technique, and scanning electron microscopy (SEM). Results: A number of [1,3]dioxolo[g][1]benzopyran-6-carboxylic acids and pyrido[d]pyrimidine-7-carboxylic acids were effectively synthesized in high yields (96-98%) within short reaction times (10-15 min). All synthesized compounds were well-characterized by IR,1H and13C NMR spectroscopy, and also by elemental analyses. Conclusion: In summary, we have developed a very simple and impressive procedure for the synthesis of 8-aryl-8H-[1,3]dioxolo[4,5-g][1]benzopyran-6-carboxylic acids and 1,3-dimethyl-2,4-dioxo-5-phenyl-1,2,3,4,5,8-hexahydropyrido[2,3-d]pyrimidine-7-carboxylic acids as biologically interesting structures in the presence of CdO NPs as an efficient recyclable heterogeneous catalyst. The remarkable advantages for the offered protocol compared with traditional methods are short reaction time, good yields of the products, and the ease of operation with simple work-up procedure.

Stereoselective Organocatalytic Construction of Spiro Oxindole Pyrrolidines Using Unsaturated α-Ketoesters and α-Ketoamides

We have investigated the stereoselective formation of spiro oxindole pyrrolidines via formal [3+2] cycloaddition of oxindole imines with ketoesters and ketoamides. Bifunctional squaramide organocatalyst was able to induce enantioselectivity of up to 60 %

Asymmetric 1,4-Addition of Arylboronic Acids to β,γ-Unsaturated α-Ketoesters using Heterogeneous Chiral Metal Nanoparticle Systems

Asymmetric 1,4-addition reactions with β,γ-unsaturated α-ketoesters are valuable because the resulting chiral ketoester compounds can be converted into various useful species that are often used as chiral building blocks in drug and natural product synthesis. However, β,γ-unsaturated α-ketoesters have two reactive points in terms of nucleophilic additions, which will lead to the 1,4-adduct, the 1,2-adduct and to the combined 1,4- and 1,2-adduct. Therefore, controlling this chemoselectivity is an important factor for the development of these transformations. Here, we developed an asymmetric 1,4-addition of aryl boronic acids to β,γ-unsaturated α-ketoesters by using heterogeneous chiral rhodium nanoparticle systems with a chiral diene ligand bearing a secondary amide moiety. The newly developed polydimethylsilane-immobilized rhodium nanoparticle catalysts showed high activity, high chemoselectivity, and excellent enantioselectivity, and this is the first heterogeneous catalytic system for this asymmetric reaction. Metal nanoparticle catalysts were recovered and reused without loss of activity or leaching of metal. (Figure presented.).

Ultrasonic-assisted unusual four-component synthesis of 7-azolylamino-4,5,6,7-tetrahydroazolo[1,5-a]pyrimidines

Four-component reactions of 3-amino-1,2,4-triazole or 5-amino-1H-pyrazole-4-carbonitrile with aromatic aldehydes and pyruvic acid or its esters under ultrasonication were studied. Unusual for such a reaction type, a cascade of elementary stages led to the

Synthesis and cytotoxicity of new 2-oxo-7-phenyl-2,3-dihydrothiazolo[4,5-b]pyridine-5-carboxylic acid amides

The synthesis and anticancer activity evaluation of new thiazolo[4,5-b]pyridine-5-carboxylic acid amides is described. The structures of the synthesized compounds were confirmed by spectroscopic data and a single crystal X-ray diffraction analysis for 2.4

Ag/CdS nanocomposite: An efficient recyclable catalyst for the synthesis of novel 8-aryl-8h-[1,3]dioxolo[4,5-g]chromene-6-carboxylic acids under mild reaction conditions

Aim and Objective: Chromene derivatives are privileged heterocyclic systems that exhibit various types of biological properties such as antioxidant, anticancer, antimicrobial, hypotensive, and local anesthetic. Cadmium sulfide nanoparticles (CdS NPs) as an efficient heterogeneous catalyst is used in various organic transformations because of its certain unique and unusual physico-chemical properties. The effectiveness of catalytic activity of CdS NPs can be improved due to the combined effect of Ag particles. Results: Ag/CdS nanocomposite is a readily available, recyclable, and non-toxic catalyst used for the highly efficient synthesis of novel 8-aryl-8H-[1,3]dioxolo[4,5-g]chromrne-6-carboxylic acids. This reaction is conveniently performed under mild reaction conditions. All synthesized compounds were well characterized by their satisfactory elemental analyses, IR, 1H and 13C NMR spectroscopy. The synthesized catalyst was fully characterized by XRD, SEM, and EDX techniques. Materials and Methods: The present methodology focuses on the condensation reaction of arylmethylidenepyruvic acids with 3,4-methylenedioxyphenol, using a catalytic amount of Ag/CdS nanocomposite (15 mol%) in aqueous media at room temperature to afford 8-aryl-8H-[1,3]dioxolo [4,5-g]chromrne-6-carboxylic acids in high yields (90-97%) within short reaction times (2-4 h). The Ag/CdS nanocomposite was also prepared by an ultrasonic-assisted sol-gel method. Conclusion: In conclusion, we have successfully synthesized novel 8-aryl-8H-[1,3]dioxolo[4,5- g]chromrne-6-carboxylic acid derivatives by the Ag/CdS nanocomposite catalyzed cyclocondensation reaction of arylmethylidenepyruvic acids with 3,4-methylenedioxyphenol under mild reaction conditions. Environmentally benign procedure, high to excellent yields of products, simplicity of operation, and use of readily available and recyclable catalyst are the advantages of this new practical reaction.

N-SULFONYLATED PYRAZOLO[3,4-B]PYRIDIN-6-CARBOXAMIDES AND METHOD OF USE

The present invention provides for compounds of formula (I) wherein R1, R2, R3, R4, R5, and R6 have any of the values defined in the specification, and pharmaceutically acceptable salts thereof, that are useful as agents in the treatment of diseases and conditions mediated and modulated by CFTR, including cystic fibrosis, Sj?gren's syndrome, pancreatic insufficiency, chronic obstructive lung disease, and chronic obstructive airway disease. Also provided are pharmaceutical compositions comprised of one or more compounds of formula (I).

Photoactivity hexahydroquinolinone and preparation method thereof

The invention discloses photoactivity hexahydroquinolinone and a preparation method thereof. The photoactivity hexahydroquinolinone is a diastereoisomer consisting of a compound shown as a formula I and a compound shown as a formula II, wherein a diastere

Arylidene pyruvic acids motif in the synthesis of new thiopyrano[2,3-d]thiazoles as potential biologically active compounds

Novel rel-(5R,6S,7S)-2-oxo-5,7-diaryl-3,5,6,7-tetrahydro-2H-thiopyrano[2,3-d]thiazol-6-yl-oxo-acetic acids were synthesized in 52-70% yields via regioselective and diastereoselective hetero-Diels-Alder reaction of 5-arylidene-4-thioxo-2-thiazolidinones with a series of arylidene pyruvic acids. The synthesized compounds were evaluated for anticancer activity in NCI60 cancer cell lines and for antiexudative activity on the carrageenan edema model in rats. Biological screening data led to identification of 3e as having moderate antitumor activity on the colon cancer HT-29 cell line and of 3b as having promising antiexudative effect.