Cephalosporin esters, their production and use.

摘要

A compound of the formula:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="32" wi="98" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein R<Sub>1</Sub> stands for n-propyl or isoprppyl; and R<Sub>2</Sub> stands for n-butyl, isobutyl, n-pentyl, n-hexyl or 2-ethylbutyl, or a pharmaceutically acceptable salt thereof, processes for preparing the same and a pharmaceutical composition thereof are provided. The compound can orally be applied as antibiotics having improved bioavailability.