Claims
- 1. A compound of the formula ##STR13## wherein R.sub.2 is phenyl, R.sub.3 is phenyl substituted with 1 or more carboxy or carboxy lower alkyl groups and R.sub.4 and R.sub.5 taken independently are each lower alkyl and taken together with the nitrogen atom form a 5- or 6-membered heterocyclic ring having at the most one additional heteroatom selected from the group consisting of piperidino, morpholino, pyrrolidino, piperazino, imidazolidino and pyrazolidino.
- 2. The compound of claim 1 which is 1-dimethylamino-4-phenyl-2-(4-carboxyphenyl)-1-buten-3,4-dione.
- 3. The compound of claim 1 which is 1-dimethylamino-4-phenyl-2-[4-(2-carboxyethyl)phenyl]-1-buten-3,4-dione.
Parent Case Info
This is a continuation, of application Ser. No. 801,952 filed May 31, 1977, now abandoned which is a division of application Ser. No. 668,179 filed Mar. 18, 1976 now U.S. Pat. No. 4,045,487, which is a division of application Ser. No. 590,655, filed June 26, 1975 now U.S. Pat. No. 3,969,373, which is a continuation-in-part of application Ser. No. 338,019, filed Mar. 5, 1973, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3812181 |
Leimgruber et al. |
May 1974 |
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Divisions (2)
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Number |
Date |
Country |
Parent |
668179 |
Mar 1976 |
|
Parent |
590655 |
Jun 1975 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
801952 |
May 1977 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
338019 |
Mar 1973 |
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