Silver-Catalyzed Controlled Intermolecular Cross-Coupling of Silyl Enol Ethers: Scalable Access to 1,4-Diketones
作者:Li Xu、Xiaoyi Liu、Gregory R. Alvey、Andrey Shatskiy、Jian-Quan Liu、Markus D. Kärkäs、Xiang-Shan Wang
DOI:10.1021/acs.orglett.2c01477
日期:2022.7.1
A protocol for silver-catalyzed controlled intermolecular cross-coupling of silyl enolates is disclosed. The protocol displays good functional group tolerance and allows efficient preparation of a series of synthetically useful 1,4-diketones. Preliminary mechanistic investigations suggest that the reaction proceeds through a one-electron process involving free radical species in which PhBr acts as
Distribution of Furamidine Analogues in Tumor Cells: Influence of the Number of Positive Charges
作者:Amélie Lansiaux、Laurent Dassonneville、Michaël Facompré、Arvind Kumar、Chad E. Stephens、Miroslav Bajic、Farial Tanious、W. David Wilson、David W. Boykin、Christian Bailly
DOI:10.1021/jm010539n
日期:2002.5.1
series of DNA binding cationic compounds related to the potent antiparasitic drug furamidine (DB75). The compounds tested bear a diphenylfuran or a phenylfuranbenzimidazole unfused aromatic core substituted with one or two amidine or imidazoline groups. The synthesis of five new compounds is reported. The B16 melanoma cell line was used to compare the capacities of mono-, bis-, and tetracations to enter