Synthetic studies toward the total synthesis of fostriecin and some analogs.

摘要

The development of a novel aldol reaction between 2-alkynals and methyl [(4R, 5S)-1,5-dimethyl-4-phenyl-2-imidazolidinone] methylene tetracarbonyl chromium (0) and its enantiomer, has provided a unique approach to the total synthesis of fostriecin; an antitumour agent. The synthetic strategy outlined for this natural product is a convergent one and involves a lactone, diene and triol fragment. All three fragments have been successfully prepared in high yields and a formal synthesis of fostriecin has also been accomplished.