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IJC-B Vol.45B(04) [April 2006] >


Title: Studies on spiroheterocycles part-I: Installation of biologically active heterocyclic nuclei into spiro compounds derived from cyclohexanone and diphenyl thiobarbituric acid
Authors: Behera, R K
Behera, A K
Pradhan, Rosy
Patra, M
Keywords: Spiroheterocycles
diphenyl thiobarbituric acid
pyrazole
isooxazole
pyrimidine
antimicrobial activities
Issue Date: Apr-2006
Publisher: NISCAIR-CSIR, India
IPC Code Int.Cl7 C07 D
Abstract: Diarylidene ketones 1a-c, prepared by the condensation of acetone with different appropriate aldehydes, on Michael addition with 1,3-diphenyl-thiobarbituric acids afford the desired spiro compounds 2a-c. The diarylidene derivatives 3a-l undergo cyclisation with hydrazine, phenyl hydrazine, hydroxylamine, urea and guanidine carbonate to furnish pyrazole 4a-l, phenyl pyrazole 5a-l, isoxazole 6a-l, pyrimidine 7a-l, and aminopyrimidine 8a-l compounds, respectively. The structures of all the compounds have been confirmed on the basis of their analytical, IR, NMR and Mass spectral data. The antimicrobial activities
Page(s): 933-942
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-0983(Online); 0376-4699(Print)
Source:IJC-B Vol.45B(04) [April 2006]

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