A New Convenient Synthesis of 3-Carboxycephems Starting from 7-Aminocephalosporanic Acid (7-ACA)
作者:Rolf Keltjens、Subramanian K. Vadivel、Erik de Vroom、Antonius J. H. Klunder、Binne Zwanenburg
DOI:10.1002/1099-0690(200107)2001:13<2529::aid-ejoc2529>3.0.co;2-9
日期:2001.7
New convenient syntheses of 3-carboxycephems starting from 7-ACA are reported. All three possible cephem derivatives with respect to the position of the double bond in the six-membered ring and oxidation state of the sulfur atom have been synthesized in high overall yield.
报道了从 7-ACA 开始的 3-carboxycephems 的新方便合成。就六元环中双键的位置和硫原子的氧化态而言,所有三种可能的头孢烯衍生物均以高总产率合成。