Design, synthesis, and anticancer activities of new compounds bearing the quinone–pyran–lactone tricyclic pharmacophore†
Abstract
A simple and more effective four-step synthesis of the tricyclic quinone–pyran–lactone skeleton was developed. Subsequent structural modification led to several series of derivatives. Regio- and diastereo-characteristics of these compounds were elucidated, and their antitumor activities against several cancer cells were investigated.