Claims
- 1. A compound having the formula ##STR93## wherein R.sub.1 ' is hydrogen or C.sub.1-6 alkyl;
- R.sub.2 ' and R.sub.5 ', independently, are hydrogen or C.sub.1-6 alkyl;
- R.sub.3 ' and R.sub.4 ', independently, are COOR.sub.7 ' or ##STR94## each R.sub.7 ', independently, is C.sub.1-6 alkyl, C.sub.3-7 cycloalkyl, C.sub.7-10 phenylalkyl, C.sub.3-6 alkoxyalkyl, C.sub.2-6 -hydroxyalkyl or C.sub.4-8 hydroxyalkoxyalkyl;
- A is C.sub.1-6 alkylene;
- each R.sub.8 ' and R.sub.9 ', independently, is C.sub.1-6 alkyl or C.sub.7-10 phenylalkyl; and
- X is oxygen or sulphur, with the proviso that at least one of R.sub.3 ' and R.sub.4 ' is COOR.sub.7 '
- where R.sub.7 ' is C.sub.2-6 hydroxyalkyl or C.sub.4-8 hydroxyalkoxyalkyl, or a pharmaceutically acceptable acid addition salt of a basic compound of the above formula.
- 2. A compound of claim 1 wherein R.sub.7 ' is C.sub.2-6 hydroxyalkyl.
- 3. A compound of claim 1 wherein R.sub.7 ' is C.sub.4-8 hydroxyalkoxyalkyl.
- 4. A compound of claim 1 wherein R.sub.1 ' is hydrogen.
Priority Claims (1)
Number |
Date |
Country |
Kind |
7520/77 |
Jun 1977 |
CHX |
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Parent Case Info
This is a division of application Ser. No. 359,751, filed Mar. 19, 1982, now issued as U.S. Pat. No. 4,466,972, which in turn is a continuation of application Ser. No. 173,305, filed July 29, 1980, now abandoned, which is turn is a continuation-in-part of Ser. No. 101,591, filed Dec. 10, 1979, now abandoned, which in turn is a continuation-in-part of Ser. No. 915,585, filed June 15, 1978, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4466972 |
Neumann |
Aug 1984 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
359751 |
Mar 1982 |
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Continuations (1)
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Number |
Date |
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Parent |
173305 |
Jul 1980 |
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Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
101591 |
Dec 1979 |
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Parent |
915858 |
Jun 1978 |
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