Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Fungus – except allergen – or component thereof or substance...
Patent
1978-10-24
1980-06-17
Lee, Mary C.
Drug, bio-affecting and body treating compositions
Antigen, epitope, or other immunospecific immunoeffector
Fungus, except allergen, or component thereof or substance...
260239A, 26032631, 542426, C07D48704, A61K 3140
Patent
active
042084229
ABSTRACT:
Disclosed are 1-substituted-pen-2-em-3-carboxylic acids (I) and their pharmaceutically acceptable salts and esters which are useful as antibiotics; such compounds are prepared by total synthesis. ##STR1## wherein R.sup.1 is, inter alia, substituted and unsubstituted alkyl, aryl and aralkyl.
REFERENCES:
patent: 3950357 (1976-04-01), Kaher et al.
patent: 4153714 (1979-05-01), Ponsford
Christensen Burton G.
Shih David H.
Arno James A.
Lee Mary C.
Levitt Julian S.
Merck & Co. , Inc.
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