1,3-Dipolar cycloaddition reactions of pyrazolidinium ylides with vinyl sulfones. A regioselective synthesis of bicyclic pyrazolidinone antibacterial agents
作者:Louis N. Jungheim、Charles J. Barnett、Joseph E. Gray、Linus H. Horcher、Timothy A. Shepherd、Sandra K. Sigmund
DOI:10.1016/s0040-4020(01)85943-3
日期:1988.1
The 1, 3-dipolar cycloaddition reaction of pyrazolidinium ylide with substituted vinyl sulfones was studied. Elimination of benzenesulfinic acid from the resulting cycloadducts gave rise to bicyclic pyrazolidinones . The (E)-olefin isomers were found to undergo cycloaddition in a highly regioselective fashion. These pyrazolidinones represent the nuclei of an exciting new class of potent antibacterial
研究了吡唑烷鎓叶立德与取代的乙烯基砜的1,3-偶极环加成反应。从生成的环加合物中消除苯磺酸生成双环吡唑烷酮。发现(E)-烯烃异构体以高度区域选择性的方式进行环加成。这些吡唑烷酮代表了令人兴奋的新型有效的模仿β-内酰胺类抗菌剂的核心。