申请人:Ishiguro Masaji
公开号:US20050004092A1
公开(公告)日:2005-01-06
A penem derivative represented by the following formula (I):
wherein R
1
represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkylthio group, a substituted or unsubstituted alkenylthio group, a substituted or unsubstituted aralkylthio group, a substituted or unsubstituted arylthio group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted heterocyclic thio group, a substituted or unsubstituted acylthio group, a mercapto group or a hydrogen atom, and R
2
represents a hydrogen atom or a carboxyl-protecting group; or a pharmacologically acceptable salt thereof.
The compound (I) exhibits strong antibacterial activities, and especially, shows strong activities against MRSA. It is therefore useful not only as a general antibacterial agent but also as an antibacterial agent for MRSA against which no general antibacterial agents are recognized to be-effective.
以下是公式(I)所代表的一种青霉烷衍生物:
其中,R1代表取代或未取代的烷基、取代或未取代的烯基、取代或未取代的芳基烷基、取代或未取代的芳基、取代或未取代的烷基硫基、取代或未取代的烯基硫基、取代或未取代的芳基烷基硫基、取代或未取代的芳基硫基、取代或未取代的杂环基、取代或未取代的杂环硫基、取代或未取代的酰基硫基、巯基或氢原子,R2代表氢原子或羧酸保护基;或其药学上可接受的盐。该化合物(I)表现出强大的抗菌活性,特别是对MRSA表现出强大的活性。因此,它不仅有用作一般抗菌剂,还有用作抗MRSA的抗菌剂,对于这种细菌,一般的抗菌剂被认为无效。