Results 61 to 70 of about 90,377 (200)

Cytotoxic Activity of Some Spirooxindole-4H-pyran Derivatives

Journal of Pharmaceutical Research International, 2019
Aims: Isatin is a honored scaffold and one of the most favorable class of heterocyclic systems that possesses many interesting biological activities and well-tolerated in humans. Here a series of fifteen spirooxindole-4H-pyran derivatives containing both isatin and pyran moieties (ICa-ICo) will be examine for their anti-cancer activity. Study ...
Soghra Khabnadideh, Masoomeh Divar, Zahra Faghih, Zeinab Faghih   +3 more
openaire   +2 more sources

Efficient Synthesis of 2-Amino-4H-benzo[b] pyrans via Copper-periodic Mesoporous Organosilica Nanocomposites Catalyst in Aqueous Media

Acta Chimica Slovenica
In this study, the efficient method was introduced for the preparation of copper-periodic mesoporous organosilica nanocomposites (Cu@MOS NCs) as a high performance heterogeneous nanocatalyst. Then the nanocomposite was characterized with various methods
Roghaye Ramazannejad lori, Zahra Fahimeh Alsadat Mortazavi, Vajihe Nejadshafiee, Asadollah Hassankhani   +3 more
doaj   +1 more source

Snail shell as a new natural and reusable catalyst for synthesis of 4H-Pyrans derivatives

, 2016
Article history: Received October 21, 2015 Received in revised form December 20, 2015 Accepted 7 April 2016 Available online 7 April 2016 A simple, efficient and general method for the synthesis of 4H-pyrans is established through a multi component ...
Z. Benzekri, H. Serrar, S. Boukhris, B. Sallek, A. Souizi   +4 more
semanticscholar   +1 more source

Sustainable alternative protocols for the multicomponent synthesis of spiro-4H-pyrans catalyzed by 4-dimethylaminopyridine

, 2015
Green approaches to the synthesis of spiro-4H-pyrans are reported based on the one-pot and three-component condensation via a domino Knoevenagel/Michael/cyclization sequence.
M. Zakeri, M. Nasef, E. Abouzari‐Lotf, A. Moharami, M. Heravi   +4 more
semanticscholar   +1 more source

An appropriate one-pot synthesis of 3,4-dihydropyrano[c]chromenes and 6-amino-5-cyano-4-aryl-2-methyl-4H-pyrans with thiourea dioxide as an efficient, reusable organic catalyst in aqueous medium

, 2015
An efficient, convenient method for the synthesis of 3,4-dihydropyrano[3,2-c]chromene derivatives by one-pot, three-component reaction of aldehydes, malononitrile/cyanoacetate, and 4-hydroxycoumarin in the presence of a catalytic amount of thiourea ...
S. S. Mansoor, K. Logaiya, K. Aswin, Prasanna Nithiya Sudhan   +3 more
semanticscholar   +1 more source

Graphene oxide supported ionic liquid/Fe complex: a robust and highly stable nanocatalyst. [PDF]

RSC Adv, 2023
Taheri K, Elhamifar D, Kargar S, Zarnegaryan A.   +3 more
europepmc   +1 more source

Tungstic acid-functionalized polycalix[4]resorcinarene as a cavity-containing hyper-branched supramolecular and recoverable acidic catalyst in 4H-pyran synthesis. [PDF]

RSC Adv, 2023
Mahmoudi Asl A, Karami B, Karimi Z.
europepmc   +1 more source

Multicomponent synthesis of novel functionalized spiroindenopyridotriazine-4<i>H</i>-pyrans. [PDF]

RSC Adv
Homaee A, Bayat M, Hosseini H.
europepmc   +1 more source

A copper(ii) complex containing pyridine-2-carbaldehyde and its direct binding onto ethylenediamine functionalized with Fe₃O₄@SiO₂ nanoparticles for catalytic applications. [PDF]

RSC Adv, 2023
Karimi M, Ramazani A, Sajjadifar S, Rezayati S.   +3 more
europepmc   +1 more source

Efficient synthesis of new indenopyridotriazine [4.3.3]propellanes and spiroindenopyridotriazine-4H-pyran derivatives. [PDF]

RSC Adv, 2023
Rezaei M, Bayat M.
europepmc   +1 more source