Claims
- 1. The compound of the formula ##STR41## wherein R.sub.1 is lower alkyl and R.sub.3 is selected from the group consisting of mesyl, tosyl, brosyl and benzenesulfonyl.
- 2. The compound of the formula ##STR42## wherein R.sub.1 is lower alkyl and R.sub.3 is selected from the group consisting of mesyl, brosyl, tosyl and benzenesulfonyl.
Parent Case Info
This is a division, of application Ser. No. 73,051 filed Sept. 6, 1979, now U.S. Pat. No. 4,247,710, which in turn is a divisional of U.S. patent application Ser. No. 875,966, filed Feb. 8, 1978, now U.S. Pat. No. 4,202,978, issued May 13, 1980.
US Referenced Citations (4)
Divisions (2)
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Number |
Date |
Country |
Parent |
73051 |
Sep 1979 |
|
Parent |
875966 |
Feb 1978 |
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