.beta.-LACTAM ANTIBIOTICS, PROCESS FOR THEIR PREPARATION AND THEIR USE AS MEDICAMENTS OR GROWTH-PROMOTERS IN LIVESTOCK REARING OR AS ANTIOXIDANTS
Номер патента: CA1274821A
Опубликовано: 02-10-1990
Автор(ы): Hans-Joachim Zeiler, Karl G. Metzger, Michael Roberg, Rolf Angerbauer
Принадлежит: Bayer AG
Опубликовано: 02-10-1990
Автор(ы): Hans-Joachim Zeiler, Karl G. Metzger, Michael Roberg, Rolf Angerbauer
Принадлежит: Bayer AG
Реферат: ABSTRACT Novel .beta.-lactam antibiotics of the formula in which R1, R2 and R3, which may be identical or different, denote a substituted or unsubstituted alkyl radical or a monocyclic or bicyclic, option-ally substituted, carbocyclic or heterocyclic ring, or R1 represents an optionally substituted alkyl radical or a monocyclic or bicyclic, substituted or unsubstituted, carbocyclic or heterocyclic ring, and R2 and R3, together with the N? atom, form an optionally substituted monocyclic or polycyclic ring which can be saturated or unsaturated and can contain oxygen, sulphur and nitrogen as other hetero atoms, or R1, R2 and R3, together with the N? atom, form a bridged, optionally substituted polycyclic ring which can be saturated or unsaturated and can contain oxygen, sulphur and nitrogen as other hetero atoms, and R4 represents hydrogen or optionally substituted alkyl, aryl or heterocyclyl or hydroxycarbonyl, lower alkoxycarbonyl, halogen, pseudohalogen or a group of the formula
Beta-lactam antibiotics, process for their preparation and their use as medicaments on growth stimulators in animal-raising or as anti-oxidants.
Номер патента: ES8800931A1. Автор: . Владелец: Bayer AG. Дата публикации: 1987-12-01.