| 摘要 |
<p>A process for preparing azetidinone derivatives represented by the general formula (I), wherein R1 represents straigth-chain or branched lower alkyl, substituted or unsubstituted aryl, substituted or unsubstituted phenylmethyl, or substituted or unsubstituted phenyloxymethyl, R2 represents hydrogen, optionally substituted hydrocarbyl or an amino-protecting group selected from among acyl, silyl, sulfonyl, and phosphonyl, R3 represents a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocylic group. </p> |
