Pyran Derivatives
![Synthesis and Characterization of a Novel Nanosilica Supported Bipyridinium Chloride Nanocomposite and its Application as a Basic Catalyst in the One-pot Preparation of Tetrahydrobenzo[b]pyran, Dihydropyrano[3,2-c]chromene and Dihydropyrano[4,3-b]pyran De](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==)
Synthesis and Characterization of a Novel Nanosilica Supported Bipyridinium Chloride Nanocomposite and its Application as a Basic Catalyst in the One-pot Preparation of Tetrahydrobenzo[b]pyran, Dihydropyrano[3,2-c]chromene and Dihydropyrano[4,3-b]pyran Derivatives
... fused pyran derivatives possess a variety of pharmacological and biological properties, such as fungicidal, insecticidal, acaricidal [9], antiviral, antileishmanial [10] and anticonvulsant activity ...
9
A GREEN APPROACH FOR THE SYNTHESIS OF 2-AMINO-4H-BENZO [B] PYRAN DERIVATIVES USING DBU AS AN EFFICIENT CATALYST
... spectroscopic technique and also elemental analysis. We proposed tentative plausible mechanism for the formation of tetrahydro benzo [b] pyran derivatives (4a-m) in the presence of 1,8-diazabicyclo [5.4.0] ...
7
Mnso4.4H2O: A Novel And Inexpensive Catalyst For The One-Pot Multicomponent Synthesis Of 4H-Benzo[B]Pyran Derivatives
... Encouraged by these results, the generality and synthetic scope of this protocol were demonstrated by synthesizing a series of 4H-benzo[b]pyran derivatives. Several aromatic aldehydes with different ...
5
Synthesis, characterization, and antimicrobial activity of pyrazol 3 yl pyrimidine, pyrazole and pyran derivatives
... In the present work, a series of novel pyrazol-3-yl-pyrimidine, pyrazole and pyran derivatives were synthesized by one step synthesis involving three component condensation. All the synthesized compounds ...
8
Palladium (0) Nanoparticles: A Novel and Reusable Catalyst for the Synthesis of Various Pyran Derivatives
... In conclusion, we have demonstrated a new and efficient methodology for the preparation of pyran derivatives in one-pot procedure using simple and readily available starting materials. Prominent among the ...
10
A Novel Catalyst for One pot Synthesis of Tetrahydrobenzo[b]pyran derivatives
... their derivatives have shown several biological and pharmacological properties such as anticoagulant, spasmolytic, diuretic, anticancer and antianaphylactin characteristics ...
5
Polyethylene glycol-bis (N-methylimidazolium) dihydroxide as an efficient and recyclable basic phase-transfer catalyst for the synthesis of 4H-pyran derivatives in aqueous media
... of benzaldehyde, malononitrile and dimedone to produce the corresponding 4H-pyran 1a with some of the methods reported in the literature is presented in Tables 3. The results showed that our procedure provided ...
12
Synthesis, characterization, and in vitro antimicrobial investigation of novel pyran derivatives based on 8-hydroxyquinoline
... some derivatives have also been reported as potential inhibitors of HIV-1 inte- ...8-hydroxyquinoline derivatives; these compounds have shown a good activity against Gram-positive and Gram-negative bacteria ...
7
Investigation of Eletrooxidation Reaction of Some Tetrahydrobenzo[b]pyran Derivatives
... their derivatives have attracted strong interest due to their useful biological and pharmacological properties, such as anticoagulant, spasmolytic, diuretic, anticancer, antianaphylactin characteristics ...
6
Clean and green synthesis of structurally diverse 4H-benzo[b]pyrans derivatives in water
... By realizing the importance of 4H-benzo[b]pyran derivatives, many methods have been reported for their synthesis. For instance, the conventional method involved the condensation of aldehyde, dimedone and ...
5
A rapid and efficient route to synthesis of 2-amino-4H-pyran-3-carbonitrile derivatives in the presence of L-proline and their antimicrobial activity
... of pyran-3-carbonitrile scaffolds and prevalence of impressive biological properties of pyran derivatives, we were interested in developing a mild synthetic protocol for the synthesis of the title ...
12
Synthesis of Pyrimidine, Pyran and Pyridine Derivatives and their Biological Evaluation and Molecular Docking Studies as Potential CDK-1 and GSK-3 Inhibitors Dipak C. Patel
... pyrazolopyrimidinethione derivatives (2a-e, Scheme 1) and 6-aminotetrahydro- pyrimidine-5-carbonitrile derivatives (3a-g, Scheme 1) was accomplished by following the basic mechanism of multicomponent ...
9
KF Al2O3 as an Efficient and Recyclable Basic Catalyst for the Synthesis of 4H Pyran 3 carboxylates and 5 Acetyl 4H pyrans
... Functionalized pyran derivatives have received significant attention due to their important biological and pharma- cological properties ...The pyran ring also forms a core unit in a number of natural ...
5
The Uses of Cyclopentanone for the Synthesis of Biologically Active Pyran, Pyridine and Thiophene Derivatives
... 4H-pyran derivatives have been re- ported to show a variety of biological activities such as antitumor [8] antibacterial [9] and antimicrobial activi- ties ...4H-pyran derivatives are also ...
11
Bis sulfamic acid functionalized magnetic nanoparticles as a retrievable nanocatalyst for the green synthesis of polyhydroquinolines and tetrahydrobenzopyrans
... In conclusion, we have described a successful preparation of bissulfamic acid-functionalized magnetic nanoparticles as an efficient, magnetically separable and reusable heterogeneous catalyst. We have considered also ...
12
Crystal structure of 6 (4 chlorophenyl) 6a nitro 6a,6b,8,9,10,12a hexahydro 6H,7H spiro[chromeno[3,4 a]indolizine 12,11′ indeno[1,2 b]quinoxaline]
... The pyran rings (O2/C19/C14/C13/C21/C20) in both molecules have envelope conformations with atom C20 as the flap, and the piperidine rings in both molecules (N1/C22–C26) have chair ...
20
AN EXPLORATION OF SUNDRY NATURE OF BENZOTRIAZOLE DERIVATIVES: A REVIEW
... Heterocyclic compounds have explored new avenues in the field of medicinal and organic chemistry. Among large pool of heterocyclic compounds, benzotriazole took the chemist and druggist to the surprise by its miraculous ...
11
The crystal structures and Hirshfeld surface analysis of 6 (naphthalen 1 yl) 6a nitro 6,6a,6b,7,9,11a hexahydrospiro[chromeno[3′,4′:3,4]pyrrolo[1,2 c]thiazole 11,11′ indeno[1,2 b]quinoxaline] and 6′ (naphthalen 1 yl) 6a′ nitro 6′,6a′,6b′,7′,8′,9′,10′,12a′ octahydro 2H spiro[acenaphthylene 1,12′ chromeno[3,4 a]indolizin] 2 one
... their derivatives are present in many large molecules suitable for photo-chemical, electrochemical and catalytic applications; moreover, some derivatives also possess non-linear optical (NLO) properties ...
22
Spiro[2 carbomethoxy 5 (4 methoxyphenyl) 3 phenylpyrrolidine 4,3′ chroman 4′ one]
... spiropyrrolidine derivatives has been achieved via the [3+2]-cycloaddition reaction between N- metalated azomethine ylides and E-3-arylidene-4-chromanones (Subramanian & Raghunathan, ...
10
Download Download PDF
... The MTT colorimetric test is a customary method of determining viable cell number in proliferation and cytotoxicity studies. As the MTT assay is rapid, appropriate, and cost- effective, it has become a very prevalent ...
6