Design, synthesis and biological evaluation of novel glycosylated diphyllin derivatives as topoisomerase II inhibitors
作者:Da-Kuo Shi、Wei Zhang、Ning Ding、Ming Li、Ying-Xia Li
DOI:10.1016/j.ejmech.2011.11.011
日期:2012.1
Recently, a novel glycosylated diphyllin derivative 11 which exhibiting potent anticancer activity by targeting topoisomerase IIα was reported by our group. In order to provide more molecules for structure-activity relationship (SAR) studies, 12 new glycosylated diphyllin analogs have been designed, synthesized, and evaluated for their biological activities. The SAR analysis revealed that (i) the sugar
Cobalt-Catalyzed Diastereoselective Cross-Couplings between Alkynylzinc Pivalates and Functionalized Cyclic Iodides or Bromides
作者:Lucie Thomas、Ferdinand H. Lutter、Maximilian S. Hofmayer、Konstantin Karaghiosoff、Paul Knochel
DOI:10.1021/acs.orglett.8b00784
日期:2018.4.20
Various 1,2-, 1,3-, and 1,4-substituted cyclic iodides or bromides undergo highly diastereoselective cross-couplings (diastereoselectivity (dr) up to 99:1) with a range of alkynylzinc pivalates, using CoCl2 (20 mol %) and trans-N,N,N',N'-tetramethylcyclohexane-1,2-diamine as a catalytic system.