Claims
- 1. A compound of the formula: ##STR6## wherein R.sub.1 is selected from H, C.sub.1-10 alkyl, C.sub.2-10 alkenyl, benzyl, substituted benzyl (wherein the substituent is selected from the group consisting of C.sub.1-5 alkyl, NO.sub.2 and halo), phenyl, phenylethenyl and 2-phenylpropenyl; and R.sub.3 is selected from the group consisting of CO.sub.2 H, CO.sub.2 C.sub.1-6 alkyl and CN.
Parent Case Info
This is a division of application Ser. No. 828,394, filed Jan. 30, 1992, now U.S. Pat. No. 5,040,953 which is hereby incorporated by reference.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5093346 |
Corini et al. |
Mar 1992 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
828394 |
Jan 1992 |
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