Wittig reactions with β-lactam carbonyls: a convenient means of protection. X-Ray crystal structure of p-nitrobenzyl-(2R,5R)-Z-7-methoxycarbonylmethylene-Z-3-(β-phthalimidoethylidene)-4-oxa-1-azabicyclo[3.2.0]heptane-2-carboxylate
作者:Martin L. Gilpin、John B. Harbridge、T. Trefor Howarth、Trevor J. King
DOI:10.1039/c39810000929
日期:——
Clavulanic acid derivatives and penicillin Vesters undergo Wittigreactions at the β-lactamcarbonyl and the β-lactam can be regenerated by low-temperature ozonolysis; the crystalstructure of one of the products is reported.