Claims
- 1. The compound of structural formula: ##STR101## or pharmaceutically acceptable salt thereof, wherein R.sup..alpha. is C.sub.1-5 alkyl R.sub.1 is hydrogen, C.sub.1-3 alkyl, or phenyl; R.sub.2 is hydroogen or C.sub.1-3 alkyl; m is 0 or 1; R.sub.3.sup..alpha. is hydrogen or ##STR102## and R.sub.4 and R.sub.5 are the same or different and each is hydrogen, C.sub.1-6 alkyl or phenyl, or taken together, R.sub.4 and R.sub.5 represent .dbd.O or .dbd.S, with the proviso that if R.sub.4 and R.sub.5 are hydrogen, C.sub.1-6 alkyl or phenyl, then m is 1.
- 2. The compound of claim 1 of structure: ##STR103## or pharmaceutically acceptable salt thereof.
- 3. The compound of claim 1 of structure: ##STR104## or pharmaceutically acceptable salt thereof.
Parent Case Info
This is a division of application Ser. No. 685,211 filed May 11, 1976 now U.S. Pat. No. 4,057,637 issued Nov. 8, 1977 which in turn is a division of prior co-pending application Ser. No. 470,231, filed May 16, 1974, now U.S. Pat. No. 3,971,797, issued July 27, 1976, which in turn is a continuation-in-part of application Ser. No. 368,774, filed June 15, 1973, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3515726 |
Haugwitz |
Jun 1970 |
|
Divisions (2)
|
Number |
Date |
Country |
Parent |
685211 |
May 1976 |
|
Parent |
470231 |
May 1974 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
368774 |
Jun 1973 |
|