Novel derivatives of 3-bromo and 3,3-dibromo-4-oxo-1-azetidines, processes for the preparation thereof and their use
                        
                            
                                申请人:PLIVA farmaceutska, kemijska, prehrambena
i kozmeticka industrija dionicko drustvo
                            
                            
                                公开号:EP0791580A2
                            
                            
                                公开(公告)日:1997-08-27
                            
                            
The invention relates to derivatives of 3-bromo- and 3,3-dibromo-4-oxo-1-azetidines of general formula I to processes for the preparation thereof and the use thereof.
 wherein
 wherein
R4 is hydrogen, methyl, benzyl or some other protective group,
R5 is hydrogen, alkyl, alkylaryl, a heterocyclic ring,
Y is halo atom,
X is halo atom, alkoxy group, nitroxy group.
According to the invention derivatives of 3-bromo- and 3,3-dibromo-4-oxo-1-azetidines are prepared by the reaction of 2-sulfinic acid derivatives, preferably 2-substituted sulfinamides of 4-oxo-azetidines with various halogenating agents, and after the treatment of the reaction mixture, 2-halo derivatives of 3-bromo- and 3,3-dibromo-4-oxo-azetidines are isolated and are subjected to a reaction with silver tetrafluoroborate and alcohols to give the corresponding 2-alkoxy derivatives of 3-bromo- and 3,3-dibromo-4-oxo azetidines, or 2-halo derivatives of 3-bromo- and 3,3-dibromo-4-oxo azetidines are subjected to a reaction with silver nitrate in 2-propanol to give, after the treatment of the reaction mixture, 2-nitroxy derivatives of 3-bromo and 3,3-dibromo-4-oxo-1-azetidines. Some newly prepared compounds are deprotected and derivatives having a free carboxy group are obtained.
The prepared compounds are components in pharmaceutical compositions effective in antibacterial or antitumour therapy.
                            本发明涉及一般式I的3-
溴和3,3-二
溴-4-氧代-1-氮杂环的衍
生物,以及其制备和使用的方法。其中R4为氢、甲基、苄基或其他保护基,R5为氢、烷基、烷基芳基、杂环环,Y为卤素原子,X为卤素原子、烷氧基、亚硝氧基。根据本发明,3-
溴和3,3-二
溴-4-氧代-1-氮杂环的衍
生物通过2-亚
磺酸基衍
生物的反应制备,优选为4-氧代-氮杂环的2-取代亚磺酰胺,与各种卤代试剂反应后,处理反应混合物,分离出3-
溴和3,3-二
溴-4-氧代-1-氮杂环的2-卤代衍
生物,并与四
氟硼酸银和醇反应,得到相应的3-
溴和3,3-二
溴-4-氧代氮杂环的2-烷氧基衍
生物,或将3-
溴和3,3-二
溴-4-氧代氮杂环的2-卤代衍
生物与2-
丙醇中的
硝酸银反应,处理反应混合物后,得到3-
溴和3,3-二
溴-4-氧代-1-氮杂环的2-亚硝氧基衍
生物。一些新制备的化合物被去保护,得到具有自由羧基的衍
生物。制备的化合物是制备抗菌或抗肿瘤治疗的药物组分。