Claims
- 1. The compound having the formula ##STR31## in which X is carbonyl (=O), R.sup.2 is (lower)alkyl of 1 to 5 carbon atoms and R is cyclopropyl or cyclobutyl.
- 2. The compound of claim 1 having the formula ##STR32## in which X is carbonyl (=O) and R is cyclopropyl or cyclobutyl.
- 3. The compounds having the formulas ##STR33## in which R.sup.2 is (lower)alkyl of 1 to 6 carbon atoms and R is cyclopropyl or cyclobutyl.
- 4. The compounds of claim 3 having the formulas ##STR34## in which R is cyclopropyl or cyclobutyl.
- 5. The compounds having the formula ##STR35##
CROSS-REFERENCE TO RELATED APPLICATION
This application is a divisional of our prior copending application Ser. No. 837,123 filed Sept. 28, 1977, now U.S. Pat. No. 4,153,603, which is a divisional of application Ser. No. 669,795 filed Mar. 23, 1976 (now U.S. Pat. No. 4,058,531).
US Referenced Citations (5)
Non-Patent Literature Citations (1)
Entry |
Onda et al., Chem. Pharm. Bull., vol. 21, pp. 2359 to 2365 (1973). |
Divisions (2)
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Number |
Date |
Country |
Parent |
837123 |
Sep 1977 |
|
Parent |
669795 |
Mar 1976 |
|