Some 1-β-D-ribofuranosyl-5-phenylcytosines and -5-(2-chlorophenyl)-2-thiocytosine

1982 ◽  
Vol 47 (8) ◽  
pp. 2145-2149 ◽  
Author(s):  
Zdeněk Buděšínský ◽  
František Šmejkal ◽  
Miloš Buděšínský

5-Phenylcytidine (XI), 5-(4-nitrophenyl)cytidine (XII) and 5-(2-chlorophenyl)-2-thiocytidine (XIII) were prepared from corresponding trimethylsilyl derivatives V-VII. Nitro derivative XII was converted to amino derivative XIV by catalytic reduction. Cytidines XI-XIV and the starting cytosines I-IV do not display any in vitro inhibitory effect against the influenza virus AWS, virus NDV, vaccinia, herpes simplex and WEE, or in vivo effect on mice infected with the herpes simplex virus type 2 (HSV-2) either.

2006 ◽  
Vol 55 (2) ◽  
pp. 201-206 ◽  
Author(s):  
Hua-Yew Cheng ◽  
Chien-Min Yang ◽  
Ta-Chen Lin ◽  
Den-En Shieh ◽  
Chun-Ching Lin

Herpes simplex virus (HSV) is a ubiquitous organism that causes infections in human populations throughout the world. It causes a variety of diseases ranging in severity from mild to life-threatening. In this study, ent-epiafzelechin-(4α→8)-epiafzelechin (EEE) extracted from the fresh leaves of Cassia javanica L. agnes de Wit (Leguminosae) was investigated for its in vitro anti-HSV-2 activity using XTT and plaque reduction assays. Results showed that EEE inhibited HSV-2 replication in a dose-dependent manner. The IC50 value was 83·8±10·9 and 166·8±12·9 μM for XTT and plaque reduction assays, respectively. EEE did not affect the viability and the proliferation of cells at antiviral concentrations. Mechanistic studies demonstrated that EEE prevented HSV-2 from penetrating the cell and also interfered with HSV-2 replication at the late stage of its life cycle. It also disturbed virus attachment but the inhibitory effect was minor. In summary, the conclusion of this study was that EEE exhibits various modes of action in suppressing HSV-2 multiplication.


Viruses ◽  
2018 ◽  
Vol 10 (3) ◽  
pp. 119 ◽  
Author(s):  
Wenwen Dai ◽  
Yu Wu ◽  
Jinpeng Bi ◽  
Shuai Wang ◽  
Fang Li ◽  
...  

Author(s):  
N. V. Krylova ◽  
I. A. Leneva ◽  
S. A. Fedoreev ◽  
L. K. Ebralidze ◽  
N. P. Mishchenko ◽  
...  

The aim of the work was to study the activity of echinochrome A, a naphthoquinoid pigment from sea urchins, and its antioxidant composition against herpes simplex virus type 2 (HSV-2) in vitro and in vivo.Materials and methods. Strain HSV-2 (G ATCC VR-734) was grown in Vero cells. The cytotoxic and anti-HSV-2 activity of the compounds was assessed in vitro by the cell viability and by cytopathic effect inhibition of virus using MTT test. The efficacy of compounds in mice model of vaginitis caused by HSV-2 was determined by the average lifetime, body weight and viral load changes.Results and discussion. The antioxidant composition (echinochrome A, ascorbic acid and α-tocopherol (5:5:1)), showed a higher antiviral efficacy than echinochrome A alone. Oral administration of the antioxidant composition protected 90% of the infected mice against death and reduced vaginal viral loads. The antiviral activity of echinochrome A and the antioxidant composition is probably due to the virus-inhibiting activity of the compounds and their antioxidant properties.Conclusion. The results obtained allow considering the tested compounds as promising agents with antiviral properties.


Virology ◽  
2003 ◽  
Vol 314 (1) ◽  
pp. 147-160 ◽  
Author(s):  
L Fang ◽  
M.G Ward ◽  
P.A Welsh ◽  
L.R Budgeon ◽  
E.B Neely ◽  
...  

2012 ◽  
Vol 93 (2) ◽  
pp. 301-304 ◽  
Author(s):  
Takehiro Himaki ◽  
Yumi Masui ◽  
Koji Chono ◽  
Tohru Daikoku ◽  
Masaya Takemoto ◽  
...  

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