Claims
- 1. A compound having the formula selected from the group consisting of ##STR18## wherein R.sub.1B and R'.sub.1B are individually selected from the group consisting of hydrogen and alkyl of 1 to 4 carbon atoms or one is hydrogen and the other is a monovalent amino protecting group or together a divalent amino protecting group, R.sub.A1 and R.sub.A1' are both alkyl of 1 to 4 carbon atoms or one is alkyl of 1 to 4 carbon atoms and the other is hydrogen, R.sub.A2 and R.sub.A2' are the same alkyls of 1 to 4 carbon atoms and R.sub.A3 and R.sub.A3' together with nitrogen to which they are attached form a member of the group consisting of pyrrolidine, piperidine and pyrrole optionally substituted with alkyl of 1 to 3 carbon atoms and R' is hydrogen or an amino protecting group.
Priority Claims (1)
Number |
Date |
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89 03740 |
Mar 1989 |
FRX |
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Parent Case Info
This is a division of Ser. No. 774,568 filed Oct. 9, 1991, now U.S. Pat. No. 5,202, 316 which is a continuation of Ser. No. 497,563 filed Mar. 21, 1990, now abandoned.
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4996318 |
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Feb 1991 |
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Foreign Referenced Citations (2)
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Country |
263213 |
Apr 1988 |
EPX |
8701706 |
Mar 1987 |
WOX |
Non-Patent Literature Citations (7)
Entry |
Murray et al., Chem. Abst. 48-11504b (1954). |
Babcock et al., Chem. Abst. 51-6712g (1957). |
Herr, Chem. Abst. 52-1298d (1958). |
Nedelec et al., Chem. Abst. 95-98147n (1981). |
Braughleit et al., Journal of Biological Chem. 262 (22) pp. 10438-10440 (1987). |
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Divisions (1)
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Number |
Date |
Country |
Parent |
774568 |
Oct 1991 |
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Continuations (1)
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Number |
Date |
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Parent |
497563 |
Mar 1990 |
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