| abstract |
The present invention provides a β-lactamase inhibitor of formula (I), or an ester thereof, a stereoisomer thereof, or a pharmaceutically acceptable salt thereof, and a method for preparing the same. The present invention also provides a pharmaceutical composition comprising a β-lactamase inhibitor of formula (I), or an ester thereof, a stereoisomer thereof, or a pharmaceutically acceptable salt thereof. In addition, the present invention is a method of treating diseases caused by bacterial infection, in which a β-lactamase inhibitor of formula (I), or an ester thereof, a stereoisomer thereof, or a pharmaceutically acceptable salt thereof is provided to a patient or subject in need. It relates to a method comprising administering. (I) |