Efficient and regioselective synthesis of novel functionalized dispiropyrrolidines and their cytotoxic activities.

An efficient and regioselective synthesis of novel functionalized dispiropyrrolizidine derivatives via a three-component [3 + 2] cycloaddition reaction of azomethine ylides is described. This protocol has the advantages of high efficiency, mild reaction conditions, a one-pot procedure, and convenient operation. Many of these compounds were evaluated for their antiproliferative properties in vitro against cancer cells and several compounds were found to have good activities.