Cycloaddition of steroidal cyclic nitrones to CN dipolarophiles: Stereoselective synthesis and antiproliferative effects of oxadiazolidinones in the estrone series

- Dipolar cycloadditions of steroidal cyclic nitrones yielded oxadiazolidinones.
- Microwave-induced cycloadditions proceeded stereoselectively.
- The novel d-homosteroidal oxadiazolidinones are potent antiproliferative agents.