170030-57-6Relevant articles and documents
Behaviour of some activated nitriles toward barbituric, thiobarbituric acids and 3-methyl-1-phenylpyrazol-5-one
Madkour,Mahmoud,Nassar,Habashy
, p. 937 - 941 (2000)
The effect of some active methylene containing heterocyclic compounds, namely barbituric, thiobarbituric acids and 3-mehtyl-1-phenylpyrazol-5-one on α-cyano-3,4,5-trimethoxycinnamonitrile and ethyl α-cyano-3,4,5-trimethoxycinnamate 1a, b was investigated.
Tin sulfide nanoparticles supported on activated carbon as an efficient and reusable Lewis acid catalyst for three-component one-pot synthesis of 4H-pyrano[2,3-c]pyrazole derivatives
Iravani, Nasir,Keshavarz, Mosadegh,Shojaeian Kish, Hossein Ali,Parandvar, Rasool
, p. 626 - 633 (2015)
Tin sulfide nanoparticles (SnS-NPs) were prepared in aqueous solution at room temperature on the surface of activated carbon (AC) and were investigated using field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-r
Amberlite-supported L-prolinate: A novel heterogeneous organocatalyst for the three-component synthesis of 4H-pyrano[2,3-c]pyrazole derivatives
Nazari,Keshavarz
, p. 539 - 545 (2017)
This report describes a new and convenient procedure for heterogenization of L-proline organocatalyst, which is based on non-covalent immobilization of L-proline on the surface of anion-exchange resin amberlite IRA900OH (AmbIRA900OH) as an efficient, chea
Behaviour of some activated nitriles toward barbituric acid, thiobarbituric acid and 3-methyl-1-phenylpyrazol-5-one
Madkour,Mahmoud,Nassar,Habashy
, p. 746 - 755 (2000)
The effect of some active methylene containing heterocyclic compounds, namely barbituric acid, thiobarbituric acid and 3-methyl-1-phenylpyrazol-5-one on α-cyano-3,4,5-trimethoxycinnamonitrile and ethyl α-cyano-3,4,5- trimethoxycinnamate (1a,b) was investigated. The structure of the new products was substantiated by their IR, 1H-NMR and mass spectra.
Ligand based design and synthesis of pyrazole based derivatives as selective COX-2 inhibitors
Murahari, Manikanta,Mahajan, Vivek,Neeladri, Sreenivasulu,Kumar, Maushmi S.,Mayur
, p. 583 - 597 (2019/02/24)
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.
Reactions with Pyranopyrazole Derivatives: Synthesis of Polyfunctionally Substituted Pyrazolopyranopyrimidine and Pyrazolopyranotriazolopyrimidine Derivatives
Mohamed, Y. A.,Zahran, M. A.,Ali, M. M.,El-Agrody, A. M.,El-Said, U. H.
, p. 322 - 323 (2007/10/03)
Several pyranopyrazole, pryazolopyranopyrimidine and pyrazolopyranotriazolopyrimidine derivatives have been prepared.