申请人:Bayer Aktiengesellschaft
公开号:US04294827A1
公开(公告)日:1981-10-13
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 X' denotes a --CO-- or --SO.sub.2 -- group and R.sub.1 denotes hydrogen, optionally substituted alkyl, aryl, thienyl, furyl, amino, monoalkylamino, dialkylamino, pyrrolidyl or piperidyl, it being furthermore possible for R.sub.1 to denote alkoxy if X' represents the --CO-- group; R represents H or OCH.sub.3 B represents phenyl, methylphenyl, chlorophenyl, hydroxyphenyl, furyl or the radical ##STR2## X represents S, O, SO, SO.sub.2 or --CH.sub.2 --; and Y represents the group ##STR3## in which the carbon atom which carries the carboxyl group is bonded to the nitrogen atom of the .beta.-lactam ring and T denotes hydrogen, alkyl-CO-O, pyridinium, amino-pyridinium, carbamoyloxy, azido, cyano, hydroxyl, the group -S-phenyl, which can be substituted, or the group --S--Het, in which Het represents an optionally substituted heterocyclic 5-membered or 6-membered ring; or a salt thereof, exhibit antibacterial and animal growth promoting activity.
新的.beta.-内酰胺抗生素,带有一个终端-ylidene-2-pyrrolidinon-1-yl基团,其化学式为##STR1## 其中A和A'代表氢,可选取代烷基,芳基或式R.sub.1 --X'的基团,其中X'表示--CO--或--SO.sub.2--基团,R.sub.1表示氢,可选取代烷基,芳基,噻吩基,呋喃基,氨基,单烷基氨基,二烷基氨基,吡咯烷基或哌啶基,此外,如果X'表示--CO--基团,则R.sub.1还可以表示烷氧基;R代表H或OCH.sub.3,B代表苯基,甲基苯基,氯苯基,羟基苯基,呋喃基或基团##STR2## X代表S,O,SO,SO.sub.2或--CH.sub.2--; Y代表基团##STR3## 其中携带羧基的碳原子与.beta.-内酰胺环的氮原子相连,T表示氢,烷基-CO-O,吡啶盐,氨基-吡啶盐,氨基甲酰氧,叠氮基,氰基,羟基,-S-苯基,可被取代,或基团--S--Het,其中Het表示可选取代的杂环5元或6元环; 或其盐,具有抗菌和促进动物生长的活性。