Potassium Superoxide as an Alternative Reagent for Winterfeldt Oxidation of β-Carbolines
作者:Weiqin Jiang、Xuqing Zhang、Zhihua Sui
DOI:10.1021/ol0271279
日期:2003.1.1
Potassiumsuperoxide was examined as an alternative oxidation reagent for the Winterfeldt reaction. KO(2) was found to be superior to the original Winterfeldt protocol for base-sensitive substrates. [reaction--see text]
derivatives were designed by elimination of the Dring of NP evodiamine. Structure-activityrelationshipstudies led to the discovery of compound 45, which displayed highly potent antitumor activity against all the tested cancer cell lines and excellent in vivo antitumor activity in the HCT116 xenograft model with low toxicity. Further mechanistic research indicated that compound 45 acted by dual Top1/2