Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-07-23
1977-03-22
Meyers, Albert T.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
42424851, 42424852, C07D26500, C07D27300, C07D29500, A01N 900
Patent
active
040136485
ABSTRACT:
There is described the stereoselective total synthesis of novel .DELTA..sup.2,3 -1,4-morpholine-2-carboxylic acids possessing a fused .beta.-lactam ring in the 1,6-position and carrying a substituent cis to carbon 5 in the 7-position of the fused ring system represented by the general formula ##STR1## wherein X is amino and Z represents an optionally substituted heterocyclic ring containing N, O or S. Also included in the invention are compounds of formula I in which the carboxyl group at the 2-position is protected as by an easily cleavable ester group and salts of both the free acids and carboxyl-protected compounds of formula I. The compounds of formula I are potent antibacterial agents or are of use as intermediates in the preparation of such anti-bacterial agents.
Douglas James L.
Horning Donald E.
Morris Leeson R.
Bristol-Myers Company
Meyers Albert T.
Morse David M.
Robinson D. W.
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