Design, synthesis and preliminary antiviral screening of new N-phenylpyrazole and dihydroisoxazole derivatives
摘要:
A new series of N-phenylpyrazoles and dihydroisoxazles was synthesized starting from alpha,beta-unsaturated ketones in basic media using phenyl hydrazine and hydroxylamine HCl, respectively. Antiviral evaluation of the target compounds revealed that the dihydroisoxazole derivatives have promising antiviral activity against hepatitis A virus and herpes simplex virus type 1.
Synthesis and antiviral activity of new pyrazole and thiazole derivatives
作者:Osama I. El-Sabbagh、Mohamed M. Baraka、Samy M. Ibrahim、Christophe Pannecouque、Graciela Andrei、Robert Snoeck、Jan Balzarini、Adel A. Rashad
DOI:10.1016/j.ejmech.2009.03.038
日期:2009.9
New N-acetyl (5-8) and N-thiocarbamoyl (9-12) derivatives of 4,5-dihydropyrazole were synthesized starting from alpha,beta-unsaturated ketones under the effect of hydrazine hydrate and thiosemicarbazide, respectively. N-Thiocarbamoylpyrazole derivatives (9-12) were cyclized using either ethyl bromoacetate or phenacyl bromides to afford the novel pyrazolothiazol-4(5H)-ones (13-16) or pyrazolothiazoles (1724). The antiviral activity for such novel compounds against a broad panel of viruses in different cell cultures revealed that N-acetyl 4,5-dihydropyrazole 7 was the only active one at subtoxic concentrations against vaccinia virus (Lederle strain) in HEL cell cultures with a 50% effective concentration (EC(50)) value of 7 mu g/ml. (C) 2009 Elsevier Masson SAS. All rights reserved.
Synthesis, spectral investigation and biological interphase of drug-based cytotoxic square pyramidal coordination compounds
作者:Mohan N. Patel、Bhupesh S. Bhatt、Promise A. Dosi、Narasimhacharya V. R. L. Amaravady、Hetal V. Movaliya
Design, synthesis and preliminary antiviral screening of new N-phenylpyrazole and dihydroisoxazole derivatives
作者:Adel A. Rashad、Osama I. El-Sabbagh、Mohamed M. Baraka、Samy M. Ibrahim、Christophe Pannecouque、Graciela Andrei、Robert Snoeck、Jan Balzarini、Ahmed Mostafa
DOI:10.1007/s00044-009-9248-y
日期:2010.12
A new series of N-phenylpyrazoles and dihydroisoxazles was synthesized starting from alpha,beta-unsaturated ketones in basic media using phenyl hydrazine and hydroxylamine HCl, respectively. Antiviral evaluation of the target compounds revealed that the dihydroisoxazole derivatives have promising antiviral activity against hepatitis A virus and herpes simplex virus type 1.