Claims
- 1. A compound having the formula ##STR16## wherein R.sup.1 is selected from the group consisting of bicyclo[2.2.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, tricyclo[5.2.1.0.sup.2,6 decyl, tricyclo [3.3.1.1.sup.3.7 decyl and indanyl;
- R.sup.2 is methyl or ethyl; and
- R.sup.3 is hydrogen, (C.sub.1-5) alkyl, (C.sub.2-5)alkenyl, benzyl or phenethyl.
- 2. A compound having the formula ##STR17## wherein R.sup.1 is selected from the group consisting of bicyclo[2.2.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, tricyclo[5.2.1.0.sup.2,6 ]decyl, tricyclo [3.3.1.1.sup.3,7 ]decyl and indanyl; and
- R.sup.2 is methyl or ethyl.
- 3. A compound having the formula ##STR18## wherein R.sup.1 is selected from the group consisting of bicyclo[2.2.1]heptyl, bicyclo[2.2.2]octyl, bicyclo[3.2.1]octyl, tricyclo[5.2.1.0.sup.2,6 ]decyl, tricyclo [3.3.1.1.sup.3,7 ]decyl and indanyl; and
- R.sup.2 is methyl or ethyl.
Parent Case Info
This is a division of application Ser. No. 07/984,190 filed Nov. 20, 1992, now U.S. Pat. No. 5,294,730; which is a division of Ser. No. 07/854,136 filed Mar. 19, 1992, now U.S. Pat. No. 5,196,426; which is a division of this application Ser. No. 07/696690, filed on May 30, 1991 now U.S. Pat. No. 5,128,358; which is a division of application Ser. No. 07/155,932 filed Jan. 19, 1988 as a request for U.S. Examination of International Application PCT/US/00958, filed Apr. 29, 1986.
US Referenced Citations (13)
Divisions (4)
|
Number |
Date |
Country |
Parent |
984190 |
Nov 1992 |
|
Parent |
854136 |
Mar 1992 |
|
Parent |
696690 |
May 1991 |
|
Parent |
155932 |
Jan 1988 |
|