Claims
- 1. A phosphonate-nucleotide ester compound of the following formula (I): ##STR21## wherein ring A represents ##STR22## wherein R.sup.1 represents halogen, hydroxyl, mercapto, tolylthio or amino; R.sup.2 represents hydrogen or amino; R.sup.3 represents ethyl having one or more fluorine substituents; R.sup.4 represents ethyl having one or more fluorine substituents; X, Y and Z independently represent methyne or nitrogen atom; or a pharmaceutically acceptable salt thereof.
- 2. The compound according to claim 1, wherein R.sup.1 is tolylthio.
- 3. The compound according to claim 1, wherein R.sup.2 is amino.
- 4. The compound according to claim 1, wherein R.sup.3 is 2,2,2-trifluoroethyl.
- 5. The compound according to claim 1, wherein R.sup.4 is 2,2,2-trifluoroethyl.
- 6. The compound according to claim 1, wherein X and Z are nitrogen atoms, X and Y are nitrogen atoms, or X, Y and Z are nitrogen atoms.
- 7. A pharmaceutical composition which comprises a compound of claim 1 and a pharmaceutically acceptable carrier.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5-159693 |
Jun 1993 |
JPX |
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Parent Case Info
This application is continuation of now abandoned application Ser. No 08/779,623, filed Jan. 7, 1997, which application is a continuation of now abandoned application, Ser. No. 08/266,637, filed Jun. 28, 1994.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
5663159 |
Starrett, Jr. et al. |
Sep 1997 |
|
5840716 |
Ubasawa et al. |
Nov 1998 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
0 481 214 |
Apr 1992 |
EPX |
WO9209611 |
Jun 1992 |
WOX |
Non-Patent Literature Citations (1)
Entry |
Drug Evaluations by American Medical Association p 1861-1862 (1993). |
Continuations (2)
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Number |
Date |
Country |
Parent |
779623 |
Jan 1997 |
|
Parent |
266637 |
Jun 1994 |
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