One-step synthesis of substituted 6-amino-5-cyanospiro-4-(piperidine-4')- 2H,4H-dihydropyrazolo[3,4-b]pyrans

Part 1: Single-stage synthesis of 1'-substituted 6-amino-spiro-4- (piperidine-4')-2H,4H-pyrano[2,3-c]pyrazole-5-carbonitriles. Tetrahedron 59, ...

AM Shestopalov，YM Emeliyanova，AA Shestopalov，... - 《Organic Letters》

γ-Alumina as a recyclable catalyst for the four-component synthesis of 6-amino-4-alkyl/aryl-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles in a...

γ-Alumina as an expedient and recyclable catalyst for the synthesis of 6-amino-4-alkyl/aryl-3-methyl-2,4-dihydropyrano[2,3- c]pyrazole-5-carbonitriles in ...

H Mecadon，MR Rohman，M Rajbangshi，... - 《Tetrahedron Letters》

γ-Alumina as a recyclable catalyst for the four-component synthesis of 6-amino-4-alkyl/aryl-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles in a...

γ-Alumina as an expedient and recyclable catalyst for the synthesis of 6-amino-4-alkyl/aryl-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles in w...

Hormi，Mecadon，and，... - 《Tetrahedron Letters》

ChemInform Abstract: -Alumina as a Recyclable Catalyst for the Four-Component Synthesis of 6-Amino-4-alkyl/aryl-3-methyl-2,4-dihydropyrano [2,3-c]pyrazole-...

for the four-component synthesis of 6-amino-4-alkyl/aryl-3-methyl-2A- dihydropyrano[2,3-c]pyrazole-5-carbonitriles in aqueous medium, Tetrahedron Lett...

H Mecadon，MR Rohman，M Rajbangshi，... - 《Cheminform》

SYNTHESIS AND BIOLOGICAL ACTIVITIES OF SOME NEW 3H-QUINAZOLIN-4-ONE DERIVATIVES DERIVED FROM 3-PHENYLAMINO- 2-THIOXO-3H-QUINAZOLIN-4-ONE

3-Phenylamino-2-thioxo-3H-quinazolin-4-onealkylationantimicrobial activityhydrazidepyrazolepyrazolone and oxadiazole derivativesS-glycosides...

MA Saleh，YA Hafez，FE Abdel-Hay，... - 《Phosphorus & Sulfur & the Related Elements》

Synthesis and Biological Activity of the Novel Adenosine Analogs; 3-Amino-6-(β-D-ribofuranosyl)pyrazolo[3,4-c]pyrazole and 3-Amino-1-methyl-6-(β-D-ribofuranosyl)pyrazolo[3,4-c]pyrazole

Chemical modification of the 4-nitrile group in 5-amino-1-(2,3,5-tri-O-benzyl--D-ribofuranosyl)pyrazole-4-carbonitrile (1) afforded 5-amino-4-(5-methyl-1,2,4-oxadiazol-3-yl)-1-(2,3,5-tri-O-benzyl--D-ribofuran osyl)pyrazole (3). The methy...

David A. Berry，Linda L. Wotring，John C. Drach，... - 《Nucleosides & Nucleotides》

A Practical Catalyst-Free Synthesis of 6-Amino-4 Alkyl/Aryl-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-carbonitrile in Aqueous Medium

A completely green and improved method for the synthesis of 6-amino-4-aryl-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-carbonitriles by a four-component reac...

M Bihani，PP Bora，G Bez - 《Journal of Chemistry》

An Efficient Four-Component, One-Pot Synthesis of 6-Amino-4-Aryl-3- Methyl-2,4-Dihydropyrano[2,3-C]Pyrazole-5-Carbonitriles Under Phase- Transfer Catalyst

A series of 6-amino-4-aryl-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles (5a-5j) were synthesized by four-component one-pot reaction of methyl ...

Ablajan，Keyume，Liju，... - 《Letters in Organic Chemistry》

Synthesis of 6-amino-4-aryl-3-methyl-1,4-dihydropyrano[2,3- c ]pyrazole-5-carbonitriles by heterogeneous reusable catalysts

A new, efficient and environmentally benign protocol for the one-pot, four-component synthesis of 1,4-dihydropyrano[2,3- c ]pyrazoles by reaction of hydraz...

HR Shaterian，M Kangani - 《Research on Chemical Intermediates》

One-pot three-component condensation for the synthesis of 1,4-dihydropyrano[2,3-c]pyrazoles using cesium fluoride as an efficient catalyst.

A clean and simple synthesis of 6-amino-4-aryl-3-methyl-1-phenyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles was accomplished in good to excellent yie...

Bhosale，N Vijay，Angulwar，... - 《Journal of Chemical & Pharmaceutical Research》