Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1990-09-26
1992-08-25
Rizzo, Nicholas S.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
540226, 540222, C07D498053, A61K 31535
Patent
active
051420392
ABSTRACT:
A method for preparing 2-amino-.beta.-lactams which are substituted by readily-removed protecting groups is provided. According to this invention, an acyl-2-amino-.beta.-lactam is further acylated with a different acyl group and is subsequently treated with base to provide a protected 2-amino .beta.-lactam with a more desirable protecting group.
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Spry, Heterocycles 26, 2911 (1987).
Blaszczak Larry C.
Munroe John E.
Spry Douglas O.
Eli Lilly and Company
Rizzo Nicholas S.
Sales James J.
Whitaker Leroy
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