| 摘要 |
<p>A 1-aza(3.2.0]bicycloheptan-2-carboxylic acid or salt or ester thereof having a substituent at position 7 of the formula:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="8" wi="19" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein R<Sup>1</Sup> and R<Sup>2</Sup> are independently hydrogen, halogen or an organic group.</p> |
