作者:Norma K. Dunlap、Milana Dezube、Dennis D. Keith、Manfred Weigele
DOI:10.1016/s0040-4039(00)60017-5
日期:1992.10
Synthesis of the 1,1-dicyanomethylene-1-dethiacephalosporin 1a is described. Substitution of the dicyanomethylene moiety for sulfur at position 1 of the cephem nucleus resulted in a highly reactive beta-lactam antibacterial.