Claims
- 1. A compound of the formula ##STR15## and pharmaceutically-acceptable cationic salts thereof, wherein R.sub.1 and R.sub.2 taken together are alkylene of 3 to 9 carbon atoms or phenylalkylene of 9 to 11 carbon atoms, with the proviso that the ring system so formed is 5- to 8-membered and R.sub.1 and R.sub.2 taken separately are each hydrogen or alkyl of 1 to 5 carbon atoms.
- 2. A compound of claim 1, wherein R.sub.1 and R.sub.2 are taken together and are alkylene of 3 to 6 carbon atoms.
- 3. A compound of claim 2, wherein R.sub.1 and R.sub.2 are taken together and are butylene.
- 4. The compound of claim 3, wherein the pharmaceutically-acceptable cationic salt is sodium.
- 5. A compound of claim 1, wherein R.sub.1 is hydrogen or methyl and R.sub.2 is methyl.
- 6. A compound of claim 5, wherein R.sub.1 is hydrogen.
- 7. A compound of claim 1 wherein R.sub.1 and R.sub.2 are taken separately and R.sub.2 is hydrogen.
- 8. The compound of claim 7 wherein R.sub.1 is methyl.
- 9. The compound of claim 7 wherein R.sub.2 is ethyl.
Parent Case Info
This application is a continuation of application Ser. No. 96,631 filed Nov. 23, 1979 and now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3887574 |
Ellis et al. |
Jun 1975 |
|
4041163 |
Bindva et al. |
Mar 1976 |
|
4223031 |
Covington et al. |
Sep 1980 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
96631 |
Nov 1979 |
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