Abstract
An improved, two‐step synthesis of efaproxiral, used in breast cancer therapy, is described, utilizing inexpensive commodity chemicals for starting materials. Selective amide formation and O‐alkylation in the presence of multireactive functional groups is demonstrated, thus avoiding protection/deprotection steps.
Acknowledgment
The authors thank Mark S. Saulter for providing residual boron results and Hamid R. Shafiei for HPLC assistance.