Claims
- 1. A compound of the formula ##STR34## and pharmaceutically acceptable salts thereof, wherein R.sub.3 and R.sub.4 are the same or different and each is hydrogen or alkyl or R.sub.3 and R.sub.4 taken together with the nitrogen atoms to which they are attached form a 1,2-diazacyclobutane, 1,2-diazacyclopentane, 1,2-diazacyclohexane, or 1,2-diazacycloheptane ring and Y.sub.1 and Y.sub.2 are either hydrogen or hydroxy but are not the same.
- 2. A compound according to claim 1, 3,4-dihydroxy-5-sulfobenzoic acid hydrazide.
- 3. A compound according to claim 1, 2,3-dihydroxy-5-sulfobenzoic acid hydrazide.
Parent Case Info
This is a division of application Ser. No. 468,412, filed Jan. 22, 1990, now U.S. Pat. No. 5,030,724.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3567769 |
Girard et al. |
Mar 1971 |
|
4775670 |
Sykes et al. |
Oct 1988 |
|
Foreign Referenced Citations (3)
Number |
Date |
Country |
0254495 |
Jul 1987 |
EPX |
0286145 |
Oct 1988 |
EPX |
0302633 |
Feb 1989 |
EPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
468412 |
Jan 1990 |
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