| 摘要 |
<p>The present invention provides thiazolylacetic acid derivatives of the formula: …<CHEM>… wherein R<1>NH- is amino or a protected amino group, R<2> is hydrogen or lower alkyl, -COOR<3> is carboxy or a protected carboxy group and n is an integer of 2 or 3, and processes for preparing the same. Said compound (I) is useful as an intermediate in the synthesis of cephalosporins.</p> |
