A concise, practical and stereoselective total synthesis of galantinic acid, constituent of the peptide antibiotic galantin, is reported. The title compound is obtained in six steps via Heathcock-Claisen condensation, Evans reduction and deprotection in 10% overall yield from protected serine. The route described herein thus constitutes the shortest and most efficient procedure for the preparation of the title compound disclosed so far.
Xile Hu, Chao Fan, Srikrishna Bera