Diazo Group Electrophilicity in Kinamycins and Lomaiviticin A: Potential Insights into the Molecular Mechanism of Antibacterial and Antitumor Activity
作者:Radoslaw S. Laufer、Gary I. Dmitrienko
DOI:10.1021/ja0167809
日期:2002.3.1
Theoretical and chemical studies of the reactivity of isoprekinamycin, the kinamycins, and the lomaiviticins support the proposal that these natural products exhibit enhanced diazonium salt character and may owe their antitumor antibiotic properties to their ability to act as electrophilic azo-coupling agents in vivo.
Total Synthesis of Isoprekinamycin: Structural Evidence for Enhanced Diazonium Ion Character and Growth Inhibitory Activity toward Cancer Cells
作者:Wei Liu、Matthew Buck、Nan Chen、Muhong Shang、Nicholas J. Taylor、Jalil Asoud、Xing Wu、Brian B. Hasinoff、Gary I. Dmitrienko
DOI:10.1021/ol0712374
日期:2007.7.1
The structurally novel diazobenzo[a]fluorene antibiotic isoprekinamycin (IPK) has been synthesized for the first time employing a Suzuki coupling of a brominated AB ring synthon with a boronate ester representing the D ring, followed by anionic cyclization and appropriate functional group manipulations. The first indication that the diazobenzo[a]fluorene system exhibits in vitro anticancer activity