Thia-aza compounds with a .beta.-lactam ring

Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Parasitic organism or component thereof or substance...

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2602452R, C07D49900

Patent

active

043316760

ABSTRACT:
2-Penem-3-carboxylic acid compounds of the formula ##STR1## in which R.sub.1 represents hydrogen, an organic radical bonded by a carbon atom to the ring carbon atom or an etherified mercapto group and

REFERENCES:
patent: 4070477 (1978-01-01), Ernest et al.
patent: 4155912 (1979-05-01), Menard et al.
patent: 4169833 (1979-10-01), Menard et al.
Clayton, J. Chem. Soc., 1969, pp. 2123-2127.
Kuhlein, Liebigs Ann. 1974, pp. 369-402.
Borman, Liebigs Ann. 1974, pp. 1391-1398.
Woodward Recent Advances in the Chemistry of .beta.-Lactam Antibiotics, The Chemical Society Burlington House (London), pp. 167-180, (1977).

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