82805-70-7

Upstream product

• 89-98-5 2-chloro-benzaldehyde 
• 89-25-8 edaravone 
• 109-77-3 malononitrile 
• 82805-66-1 2-[(2-Chloro-phenyl)-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)-methyl]-malononitrile 
• 2698-41-1 o-chlorobenzylidene malononitrile 
• 100-63-0 phenylhydrazine 
• 19735-89-8 3-methyl-1-phenylpyrazolin-5(4H)-one 
• 141-97-9 ethyl acetoacetate 

Downstream Products

• 1444154-67-9 N-[4-(2-chlorophenyl)-3-methyl-1-phenyl-7-thioxo-1,4,7,8-tetrahydro-pyrazolo[4’,3’:5,6]pyrano[2,3-d]pyrimidine-5-yl]thiourea 
• 1444154-57-7 4-(2-chlorophenyl)-5-imino-3-methyl-1,6-diphenyl-4,5,6,8-tetrahydro-pyrazolo[4’,3’:5,6]pyrano[2,3-d]pyrimidine-7(1H)-thione 
• 1444154-48-6 3-methyl-4-(2-chlorophenyl)-1-phenyl-4,8-dihydropyrazolo[4’,3’:5,6]-pyrano[2,3-d]pyrimidine-5,7(1H,6H)-dithione 
• 1375262-02-4 4-(2-chlorophenyl)-3,7-dimethyl-1-phenyl-4,6-dihydropyrazolo[4',3':5,6]pyrano[2,3-d]pyrimidine-5(1H)-one 
• 1375261-84-9 4-(2-chlorophenyl)-3-methyl-1-phenyl-4,6-dihydropyrazolo[4',3':5,6]pyrano[2,3-d]pyrimidine-5(1H)-one 
• 1334596-73-4 5-amino-4-(2-chlorophenyl)-3-methyl-1-phenyl-4,8-2(H)-dihydropyrazolo[4',3':5,6]pyrano[2,3-d]pyrimidine-7(1H)-one 
• 1334596-83-6 5-amino-4-(2-chlorophenyl)-3-methyl-1-phenyl-4,8-dihydro-2(H)-pyrazolo[4',3':5,6]pyrano[2,3-d]pyrimidine-7(1H)-thione 

Relevant academic research and scientific papers

Zn (II)-Schiff base covalently anchored to CaO@SiO2: A hybrid nanocatalyst for green synthesis of 4H-pyrans

In this study, the Zn (II)-Schiff base covalently anchored onto the surface of CaO@SiO2 nanoparticles. The structure of this hybrid nanomaterial (CaO@SiO2-NH2-Sal-Zn) was characterized using the analytical techniques such

Tungstic acid (H4WO5) immobilized on magnetic-based zirconium amino acid metal–organic framework: An efficient heterogeneous Br?nsted acid catalyst for l-(4-phenyl)-2,4-dihydropyrano[2,3c]pyrazole derivatives preparation

A new magnetic nanocatalyst based on the immobilization of tungstic acid onto new design robust, cost-effective, green, and scalable zirconium-L-aspartate amino acid metal–organic framework (MOF)-grafted L-(+)-tartaric acid stabilized magnetite nanopartic

Sulfonic acid-functionalized Fe3O4-supported magnetized graphene oxide quantum dots: A novel organic-inorganic nanocomposite as an efficient and recyclable nanocatalyst for the synthesis of dihydropyrano[2,3-c]pyrazole and 4H-chromen

In this research, the main emphasis has been focused on the preparation of a novel Fe3O4-supported propane-1-sulfonic acid-grafted graphene oxide quantum dots (Fe3O4@GOQD-O-(propane-1-sulfonic acid)) that it was

Synthesis, characterization and application of Fe3O4@SiO2@CPTMO@DEA-SO3H nanoparticles supported on bentonite nanoclay as a magnetic catalyst for the synthesis of 1,4-dihydropyrano[2,3-c]pyrazoles

Fe3O4 nanoparticles were prepared and decorated on the surface of nanobentonite (NB), and subsequently modified by the organic and inorganic linkers and then sulfonic acid immobilization on the nanoparticles. The NB-Fe3Os

Fe3O4-supported N-pyridin-4-amine-grafted graphene oxide as efficient and magnetically separable novel nanocatalyst for green synthesis of 4H-chromenes and dihydropyrano[2,3-c]pyrazole derivatives in water

Abstract: Fe3O4-magnetized N-pyridin-4-amine-functionalized graphene oxide [Fe3O4@GO-N-(pyridin-4-amine)] was readily prepared via a three-step procedure. The synthesized nanofilms were characterized by scanning

Environmentally benign synthesis of pyranopyrazole derivatives by cobalt Schiff-base complexes immobilized on magnetic iron oxide nanoparticles

In this work, an efficient and straight procedure has been described for one-pot three-component synthesis of pyranopyrazole derivatives in the presence of a new cobalt Schiff-base complex immobilized on silica-coated Fe3O4 nanoparti

A concise route for the one-pot multi-component synthesis of 4,6-disubstituted 2-aminopyridine-3-carbonitriles and pyranopyrazoles using cobalt (II) nitrate hexahydrate as catalyst

Three facile and efficient routes for one-pot, cobalt (II) nitrate hexahydrate catalyzed multi-component synthesis of 2-amino-3-cyanopyridine and pyranopyrazole derivatives have been developed. The present protocols offer the products in good yields from the simple and readily available starting materials. The other salient features of these protocols are operational simplicity, easy isolation of product without the need of column chromatographic purification, and the use of cobalt (II) nitrate hexahydrate as an efficient catalyst.

Zn(L-proline)2 as an efficient and reusable catalyst for the multi-component synthesis of pyran-annulated heterocyclic compounds

We have developed a simple, straightforward and highly efficient multi-component one-pot synthesis of 2-amino-3-cyano-4H-pyrans and pyran-annulated heterocyclic compounds. Zn(L-proline)2 has been utilized as a mild and efficient Lewis acid cata

An Eco-friendly Catalytic System for One-pot Multicomponent Synthesis of Diverse and Densely Functionalized Pyranopyrazole and Benzochromene Derivatives

An external base-free, efficient, cost-effective, and environmentally benign protocol has been developed for the one-pot multicomponent synthesis of highly functionalized pyranopyrazoles and benzochromenes using water extract of Agave americana (century p

Ligand based design and synthesis of pyrazole based derivatives as selective COX-2 inhibitors

The design and synthesis of novel pyrazole based derivatives has been carried out using the ligand based approach like pharmacophore and QSAR modelling of reported pyrazoles from the available literature to investigate the chemical features that are essential for the design of selective and potent COX-2 inhibitors. Both pharmacophore and QSAR models with good statistical parameters were selected for the design of the lead molecule. Also by exploiting the chemical structures of selective and marketed COX-2 inhibitors, celecoxib and SC-558 were used in designing the molecules which are used in the treatment of inflammation and related disorders. The therapeutic action of the Non-Steroidal Anti-inflammatory Agents (NSAIDs) is based primarily on the COX-2 inhibition. With this background we have synthesized some azomethine derivatives of 3-methyl-1-substituted-4-phenyl-6-[{(1E)-phenylmethylene}amino]-1,4-dihydro pyrano[2,3-c]pyrazole-5-carbonitrile 6(a-o) and were characterized by 1HNMR, 13CNMR and Mass spectral techniques. All the synthesized pyrazole derivatives were tested for in vitro membrane stability property in both COX-1 & COX-2 inhibition studies and in vivo anti-inflammatory activity by carrageenan induced rat paw edema model. Among them, compound 6k showed very good activity by in vivo anti-inflammatory activity with 0.8575 mmol/kg as ED50. Similarly compounds 6m, 6o, 6i and 6h exhibited comparable anti-inflammatory activity to standard drugs. Also the active compounds were further screened for ulcerogenic activity and were found be safer with less ulcer index compared to the marketed drugs like aspirin, ibuprofen and celecoxib.