作者:E. M. Gordon、M. A. Ondetti、Jelka Pluscec、C. M. Cimarusti、D. P. Bonner、R. B. Sykes
DOI:10.1021/ja00386a035
日期:1982.11
Practical synthetic approaches to intermediates for the preparation of the novel O-sulfonated-N-hydroxy-2-azetidinone antibiotics
作者:Marvin J. Miller、Atanu Biswas、Mark A. Krook
DOI:10.1016/s0040-4020(01)92150-7
日期:1983.1
preparation of a variety of monocyclicβ-lactamantibiotics is described. Hydroxaminolysis of N-protected serine esters provided the hydroxamic acids 10. Acylation followed by cyclization yielded the β-lactams 12. Solvolytic deacylation gave the parent N-hydroxy-2-azetidinones 7 which can be converted to the N- unsubstituted 2-azetidinones 8 or the novel O-sulfonated antibiotics 3. The N-unsubstituted-2-azetidinones