Antibacterial and growth promoting .beta.-lactam antibiotics car

Details Antibacterial and growth promoting .beta.-lactam antibiotics car Antibacterial and growth promoting .beta.-lactam antibiotics car

1977-12-20

1981-10-13

Gerstl, Robert

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Virus or component thereof

2602391, 424246, 424263, 424267, 424271, 544 21, 544 22, 544 25, 544 27, 544 28, A61K 31655, C07D49968, C07D50122, C07D50134

Patent

active

042948274

ABSTRACT:
New .beta.-lactam antibiotics carrying a terminal -ylidene-2-pyrrolidinon-1-yl radical and of the formula ##STR1## in which A and A' represent hydrogen, optionally substituted alkyl, aryl or a group of the formula R.sub.1 --X'
in which

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